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SIMATIC
S7-1500, ET 200MP, ET 200SP,
ET 200AL, ET 200pro
Diagnostics
Function Manual
10/2018
A5E03735838
-AE
Preface
Documentation guide
1
Overview of system
diagnostics
2
Quick start
3
Setting and determining
system diagnostics
4
System diagnostics by
means of the user program
5
Alarms
6
Diagnostics of the S7-
1500R/H redundant system
7
Siemens AG
Division Digital Factory
Postfach 48 48
90026 NÜRNBERG
GERMANY
09/2018 Subject to change
Copyright © Siemens AG 2013 - 2018.
All rights reserved
Legal information
Warning notice system
This manual contains notices you have to observe in order to ensure your personal safety, as well as to prevent
damage to property. The notices referring to your personal safety are highlighted in the manual by a safety alert
symbol, notices referring only to property damage have no safety alert symbol. These notices shown below are
graded according to the degree of danger.
DANGER
indicates that death or severe personal injury will result if proper precautions are not taken.
WARNING
indicates that death or severe personal injury may result if proper precautions are not taken.
CAUTION
indicates that minor personal injury can result if proper precautions are not taken.
NOTICE
indicates that property damage can result if proper precautions are not taken.
If more than one degree of danger is present, the warning notice representing the highest degree of danger will
be used. A notice warning of injury to persons with a safety alert symbol may also include a warning relating to
property damage.
Qualified Personnel
The product/system described in this documentation may be operated only by
personnel qualified
for the specific
task in accordance with the relevant documentation, in particular its warning notices and safety instructions.
Qualified personnel are those who, based on their training and experience, are capable of identifying risks and
avoiding potential hazards when working with these products/systems.
Proper use of Siemens products
Note the following:
WARNING
Siemens products may only be used for the applications described in the catalog and in the relevant technical
documentation. If products and components from other manufacturers are used, these must be recommended
or approved by Siemens. Proper transport, storage, installation, assembly, commissioning, operation and
maintenance are required to ensure that the products operate safely and without any problems. The permissible
ambient conditions must be complied with. The information in the relevant documentation must be observed.
Trademarks
All names identified by ® are registered trademarks of Siemens AG. The remaining trademarks in this publication
may be trademarks whose use by third parties for their own purposes could violate the rights of the owner.
Disclaimer of Liability
We have reviewed the contents of this publication to ensure consistency with the hardware and software
described. Since variance cannot be precluded entirely, we cannot guarantee full consistency. However, the
information in this publication is reviewed regularly and any necessary corrections are included in subsequent
editions.
Diagnostics
Function Manual, 10/2018, A5E03735838-AE 3
Preface
Purpose of the documentation
This function manual provides an overview of the diagnostics options for the automation
system SIMATIC S7-1500, for CPU 1516pro-2 PN based on SIMATIC S7-1500, and for the
distributed I/O systems SIMATIC ET 200MP, ET 200SP and ET 200AL.
The documentation covers the following:
● Illustration of the uniformity and consistency of system diagnostics
● Overview of the options for establishing system diagnostics information
Basic knowledge required
The following knowledge is required in order to understand the function manual:
● General knowledge in the field of automation technology
● Knowledge of the industrial automation system SIMATIC
● Knowledge of working with STEP 7 and WinCC
● Knowledge about the use of Microsoft Windows operating systems
Scope of the documentation
This documentation is the basic documentation for all products of the S7-1500, ET 200MP,
ET 200SP and ET 200AL systems, as well as for CPU 1516pro-2 PN. The product
documentation is based on this documentation.
What's new compared to the previous version of the function manual (09/2016 edition)
What's new?
What are the customer benefits?
Where can I find the information?
New contents Description of the diagnos-
tics of the S7-1500R/H re-
dundant system
You obtain information in compact form
on the special features of the diagnos-
tics in the S7-1500R/H redundant sys-
tems.
Section Diagnostics of the S7-
1500R/H redundant system
(Page 100)
Changed
contents
Scope of the function man-
ual expanded to include the
S7-1500R/H redundant
system
Functions with which you are familiar
from the SIMATIC S7-1500 automation
system are implemented for the S7-
1500R/H redundant system.
Redundant System S7-1500R/H
System Manual
(https://support.industry.siemens.
com/cs/ww/en/view/109754833)
Preface
Diagnostics
4 Function Manual, 10/2018, A5E03735838-AE
What's new compared to the previous version of the function manual (06/2014 edition)
What's new?
What are the customer benefits?
Where can I find the information?
New contents Extended functionality of the
Web server
• You obtain information about:
– Know-how protection or copy
protection of the PLC program
– Program/communication load
and cycle time
– F-collective signatures, cycle
times and runtimes of the F-
runtime group(s) (with an F-
CPU)
• You can monitor statuses, errors,
technology alarms and the current
values of technology objects (TOs)
with the Web server.
• You can read, view and save trace
recordings via the Web server and
thus obtain plant and project infor-
mation for diagnostics and mainte-
nance without STEP 7.
• You can set four additional lan-
guages for the Web interface.
Section Diagnostics information
using the web server (Page 51),
Web server
(http://support.automation.siemen
s.com/WW/view/en/59193560)
function manual,
Using the trace and logic analyz-
er function
(https://support.industry.siemens.
com/cs/ww/en/view/64897128)
function manual
Assignment of different
project languages extended
You can assign up to three different
project languages for comments and
alarm texts to the user interface lan-
guages of display devices.
Section Editing alarms in the
alarm editor (Page 81)
Changed
contents
Scope of the function man-
ual expanded to include
CPU 1516pro-2 PN
Functions that you will be familiar with
from the SIMATIC S7-1500 CPUs are
implemented in the CPU 1516pro-2 PN
(degree of protection IP65, IP66 and
IP67).
Operating instructions CPU
1516pro-2 PN
(https://support.industry.siemens.
com/cs/ww/en/view/109482416)
Security events added You know which types of events are
registered as security events in the
diagnostics buffer and can configure
group alarms for them.
Section CPU diagnostics buffer
(Page 45)
Influence of the value status
explained
You know which factors influence the bit
in the value status and can take this into
account during configuration.
Section System diagnostics using
process image inputs (Page 76)
Note added on the maximum configuration limits of program alarms. Section Creating alarms with the
"Program_Alarm" instruction
(Page 80).
Preface
Diagnostics
Function Manual, 10/2018, A5E03735838-AE 5
Conventions
STEP 7
: We refer to "STEP 7" in this documentation as a synonym for the configuration and
programming software "STEP 7 as of V12 (TIA Portal)" and subsequent versions.
This document contains illustrations of the described devices. The illustrations may differ
slightly from the device supplied.
You should also pay particular attention to notes such as the one shown below:
Note
A note contains important information on the product, on the handling of the product or on
the section of the docu
mentation to which particular attention should be paid.
Security information
Siemens provides products and solutions with industrial security functions that support the
secure operation of plants, systems, machines and networks.
In order to protect plants, systems, machines and networks against cyber threats, it is
necessary to implement – and continuously maintain – a holistic, state-of-the-art industrial
security concept. Siemens' products and solutions constitute one element of such a concept.
Customers are responsible for preventing unauthorized access to their plants, systems,
machines and networks. Such systems, machines and components should only be
connected to an enterprise network or the internet if and to the extent such a connection is
necessary and only when appropriate security measures (e.g. firewalls and/or network
segmentation) are in place.
For additional information on industrial security measures that may be implemented, please
visit (https://www.siemens.com/industrialsecurity).
Siemens' products and solutions undergo continuous development to make them more
secure. Siemens strongly recommends that product updates are applied as soon as they are
available and that the latest product versions are used. Use of product versions that are no
longer supported, and failure to apply the latest updates may increase customers' exposure
to cyber threats.
To stay informed about product updates, subscribe to the Siemens Industrial Security RSS
Feed under (https://www.siemens.com/industrialsecurity).
Preface
Diagnostics
6 Function Manual, 10/2018, A5E03735838-AE
Siemens Industry Online Support
You can find current information on the following topics quickly and easily here:
●
Product support
All the information and extensive know-how on your product, technical specifications,
FAQs, certificates, downloads, and manuals.
●
Application examples
Tools and examples to solve your automation tasks – as well as function blocks,
performance information and videos.
●
Services
Information about Industry Services, Field Services, Technical Support, spare parts and
training offers.
●
Forums
For answers and solutions concerning automation technology.
●
mySupport
Your personal working area in Industry Online Support for messages, support queries,
and configurable documents.
This information is provided by the Siemens Industry Online Support in the Internet
(https://support.industry.siemens.com).
Industry Mall
The Industry Mall is the catalog and order system of Siemens AG for automation and drive
solutions on the basis of Totally Integrated Automation (TIA) and Totally Integrated Power
(TIP).
Catalogs for all the products in automation and drives are available on the Internet
(https://mall.industry.siemens.com).
Diagnostics
Function Manual, 10/2018, A5E03735838-AE 7
Table of contents
Preface ................................................................................................................................................... 3
1 Documentation guide .............................................................................................................................. 9
2 Overview of system diagnostics ............................................................................................................ 14
2.1 Properties of system diagnostics ............................................................................................ 14
2.2 Benefits of innovative system diagnostics .............................................................................. 16
3 Quick start ............................................................................................................................................ 17
3.1 Using the display of the CPU .................................................................................................. 18
3.2 Using STEP 7 ......................................................................................................................... 20
4 Setting and determining system diagnostics .......................................................................................... 25
4.1 Configuring alarms for system diagnostics ............................................................................. 26
4.2 Options for displaying system diagnostics .............................................................................. 28
4.2.1 Diagnostics information at the devices ................................................................................... 29
4.2.1.1 LEDs ....................................................................................................................................... 29
4.2.1.2 Display of the CPU .................................................................................................................. 30
4.2.2 Diagnostics information in STEP 7 ......................................................................................... 32
4.2.2.1 Explanation of diagnostics symbols ........................................................................................ 32
4.2.2.2 Accessible devices (without project) ....................................................................................... 34
4.2.2.3 Devices & networks ................................................................................................................ 36
4.2.2.4 Online & diagnostics ............................................................................................................... 39
4.2.2.5 "Diagnostics" tab in the Inspector window .............................................................................. 42
4.2.2.6 CPU diagnostics buffer ........................................................................................................... 45
4.2.2.7 "Online tools" task card ........................................................................................................... 48
4.2.2.8 Configuring the settings for I/O modules in STEP 7 ............................................................... 50
4.2.3 Diagnostics information using the web server ........................................................................ 51
4.2.4 Diagnostics information using the HMI diagnostics view ........................................................ 62
4.2.4.1 Configuring system diagnostics .............................................................................................. 63
4.2.4.2 Different views of the HMI diagnostics view ........................................................................... 66
4.2.4.3 Inserting system diagnostics indicator .................................................................................... 69
4.2.4.4 Configuring button as system diagnostics indicator ............................................................... 71
5 System diagnostics by means of the user program ................................................................................ 74
5.1 Options of system diagnostics in the user program ................................................................ 74
5.2 System diagnostics using process image inputs .................................................................... 76
Table of contents
Diagnostics
8 Function Manual, 10/2018, A5E03735838-AE
6 Alarms .................................................................................................................................................. 79
6.1 Creating alarms with the "Program_Alarm" instruction .......................................................... 80
6.2 Editing alarms in the alarm editor .......................................................................................... 81
6.3 Display of program alarms ..................................................................................................... 84
6.4 Output of the alarm state with the "Get_AlarmState" instruction ........................................... 85
6.5 Example program for program alarms ................................................................................... 86
6.5.1 Task ....................................................................................................................................... 86
6.5.2 Example 1: Program alarm without associated values .......................................................... 87
6.5.3 Example 2: Program alarm with associated value ................................................................. 92
6.5.4 Displaying the alarm .............................................................................................................. 99
7 Diagnostics of the S7-1500R/H redundant system ................................................................................ 100
7.1 Online and Diagnostics view ................................................................................................ 103
7.2 "Online Tools" task card ....................................................................................................... 106
7.3 Diagnostics view in the project tree and in the device view and network view .................... 109
7.4 Diagnostics in the RUN-Redundant system state ................................................................ 114
7.5 Restrictions in the RUN-Solo system state .......................................................................... 120
7.6 System diagnostics by means of the user program ............................................................. 121
Glossary .............................................................................................................................................. 122
Index ................................................................................................................................................... 126
Diagnostics
Function Manual, 10/2018, A5E03735838-AE 9
Documentation guide
1
The documentation for the SIMATIC S7-1500 automation system, for CPU 1516pro-2 PN
based on SIMATIC S7-1500, and for the distributed I/O systems SIMATIC ET 200MP,
ET 200SP and ET 200AL is divided into three areas.
This division allows you easier access to the specific information you require.
Basic information
System manuals and Getting Started manuals describe in detail the configuration,
installation, wiring and commissioning of the SIMATIC S7-1500, ET 200MP, ET 200SP and
ET 200AL systems; use the corresponding operating instructions for CPU 1516pro-2 PN.
The STEP 7 online help supports you in configuration and programming.
Device information
Product manuals contain a compact description of the module-specific information, such as
properties, terminal diagrams, characteristics and technical specifications.
Documentation guide
Diagnostics
10 Function Manual, 10/2018, A5E03735838-AE
General information
The function manuals contain detailed descriptions on general topics such as diagnostics,
communication, Motion Control, Web server, OPC UA.
You can download the documentation free of charge from the Internet
(https://support.industry.siemens.com/cs/ww/en/view/109742705).
Changes and additions to the manuals are documented in product information sheets.
You will find the product information on the Internet:
● S7-1500/ET 200MP (https://support.industry.siemens.com/cs/us/en/view/68052815)
● ET 200SP (https://support.industry.siemens.com/cs/us/en/view/73021864)
● ET 200AL (https://support.industry.siemens.com/cs/us/en/view/99494757)
Manual Collections
The Manual Collections contain the complete documentation of the systems put together in
one file.
You will find the Manual Collections on the Internet:
● S7-1500/ET 200MP (https://support.industry.siemens.com/cs/ww/en/view/86140384)
● ET 200SP (https://support.industry.siemens.com/cs/ww/en/view/84133942)
● ET 200AL (https://support.industry.siemens.com/cs/ww/en/view/95242965)
"mySupport"
With "mySupport", your personal workspace, you make the best out of your Industry Online
Support.
In "mySupport", you can save filters, favorites and tags, request CAx data and compile your
personal library in the Documentation area. In addition, your data is already filled out in
support requests and you can get an overview of your current requests at any time.
You must register once to use the full functionality of "mySupport".
You can find "mySupport" on the Internet (https://support.industry.siemens.com/My/ww/en).
"mySupport" - Documentation
In the Documentation area in "mySupport" you can combine entire manuals or only parts of
these to your own manual.
You can export the manual as PDF file or in a format that can be edited later.
You can find "mySupport" - Documentation on the Internet
(https://support.industry.siemens.com/My/ww/en/documentation).
Documentation guide
Diagnostics
Function Manual, 10/2018, A5E03735838-AE 11
"mySupport" - CAx data
In the CAx data area in "mySupport", you can access the current product data for your CAx
or CAe system.
You configure your own download package with a few clicks.
In doing so you can select:
● Product images, 2D dimension drawings, 3D models, internal circuit diagrams, EPLAN
macro files
● Manuals, characteristics, operating manuals, certificates
● Product master data
You can find "mySupport" - CAx data on the Internet
(https://support.industry.siemens.com/my/ww/en/CAxOnline).
Application examples
The application examples support you with various tools and examples for solving your
automation tasks. Solutions are shown in interplay with multiple components in the system -
separated from the focus on individual products.
You will find the application examples on the Internet
(https://support.industry.siemens.com/sc/ww/en/sc/2054).
TIA Selection Tool
With the TIA Selection Tool, you can select, configure and order devices for Totally
Integrated Automation (TIA).
This tool is the successor of the SIMATIC Selection Tool and combines the known
configurators for automation technology into one tool.
With the TIA Selection Tool, you can generate a complete order list from your product
selection or product configuration.
You can find the TIA Selection Tool on the Internet
(https://w3.siemens.com/mcms/topics/en/simatic/tia-selection-tool).
Documentation guide
Diagnostics
12 Function Manual, 10/2018, A5E03735838-AE
SIMATIC Automation Tool
You can use the SIMATIC Automation Tool to run commissioning and maintenance activities
simultaneously on different SIMATIC S7 stations as a bulk operation, independently of the
TIA Portal.
The SIMATIC automation tool provides a variety of functions:
● Scanning of a PROFINET/Ethernet plant network and identification of all connected CPUs
● Address assignment (IP, subnet, gateway) and station name (PROFINET device) to a
CPU
● Transfer of the date and programming device/PC time converted to UTC time to the
module
● Program download to CPU
● Operating mode switchover RUN/STOP
● CPU localization by means of LED flashing
● Reading out CPU error information
● Reading of CPU diagnostic buffer
● Reset to factory settings
● Updating the firmware of the CPU and connected modules
You can find the SIMATIC Automation Tool on the Internet
(https://support.industry.siemens.com/cs/ww/en/view/98161300).
PRONETA
With SIEMENS PRONETA (PROFINET network analysis), you analyze the plant network
during commissioning. PRONETA features two core functions:
● The topology overview independently scans PROFINET and all connected components.
● The IO check is a fast test of the wiring and the module configuration of a plant.
You can find SIEMENS PRONETA on the Internet
(https://support.industry.siemens.com/cs/ww/en/view/67460624).
Documentation guide
Diagnostics
Function Manual, 10/2018, A5E03735838-AE 13
SINETPLAN
SINETPLAN, the Siemens Network Planner, supports you in planning automation systems
and networks based on PROFINET. The tool facilitates professional and predictive
dimensioning of your PROFINET installation as early as in the planning stage. In addition,
SINETPLAN supports you during network optimization and helps you to exploit network
resources optimally and to plan reserves. This helps to prevent problems in commissioning
or failures during productive operation even in advance of a planned operation. This
increases the availability of the production plant and helps improve operational safety.
The advantages at a glance
● Network optimization thanks to port-specific calculation of the network load
● Increased production availability thanks to online scan and verification of existing systems
● Transparency before commissioning through importing and simulation of existing STEP 7
projects
● Efficiency through securing existing investments in the long term and optimal exploitation
of resources
You can find SINETPLAN on the Internet (https://www.siemens.com/sinetplan).
Diagnostics
14 Function Manual, 10/2018, A5E03735838-AE
Overview of system diagnostics
2
2.1
Properties of system diagnostics
Introduction
In the SIMATIC environment, the term "system diagnostics" refers to diagnostics of devices
and modules.
All SIMATIC products have integrated diagnostic functions that you can use to detect and
remedy faults. The components automatically flag a potential fault in the operation and
provide detailed information. You can minimize unscheduled standstill times with plant-wide
diagnostics.
The SIMATIC automation system monitors the following states in the running plant:
● Device failure/recovery
● Insert/remove event
● Module fault
● I/O access error
● Channel fault
● Parameter assignment error
● Failure of the external auxiliary voltage
Properties of SIMATIC system diagnostics
● Integrated as standard in the hardware
● System-wide across bus limits
● Automatic localization of the error source
● Automatic output of the cause of the error in plain text
● Plant-wide diagnostics of all components
● Archiving and logging of alarms
● Configurability of alarms
Overview of system diagnostics
2.1 Properties of system diagnostics
Diagnostics
Function Manual, 10/2018, A5E03735838-AE 15
Consistent diagnostics from the field level all the way to the management level
The various diagnostics media give you a uniform view of maintenance-related information of
every automation component in the plant: System status (module and network status, alarms
for system errors) are available plant-wide in a uniform display.
Figure 2-1 Overview of system diagnostics in a plant
Overview of system diagnostics
2.2 Benefits of innovative system diagnostics
Diagnostics
16 Function Manual, 10/2018, A5E03735838-AE
2.2
Benefits of innovative system diagnostics
System diagnostics is also possible in STOP
The system diagnostics is integrated in the firmware of the CPU and works independently of
the cyclic user program. This means it is also available in the STOP CPU operating mode.
Faults are detected immediately and signaled to the higher-level HMI devices, the Web
server and the display of the SIMATIC S7-1500 CPU, even in STOP mode. This makes
system diagnostics consistent with the actual plant state at all times.
Uniform display concept
All clients of a system are provided with diagnostics information by a uniform mechanism.
The same system diagnostics information is used regardless of the display medium.
Step
Description
①
The device detects an error and sends diagnostics data to the assigned CPU.
②
The CPU informs the connected display media. The display of the system diagnostics is
updated.
Figure 2-2 Sequence of the system diagnostics
Diagnostics
Function Manual, 10/2018, A5E03735838-AE 17
Quick start
3
Introduction
The following chapters of this documentation describe the different options for establishing
system diagnostics. All described options can be used independently of one another.
This chapter gives you an overview of the basic procedure to get initial diagnostics
information fast.
Note
System diagnostics is generally available for the devices of the SIMATIC series.
Quick start
3.1 Using the display of the CPU
Diagnostics
18 Function Manual, 10/2018, A5E03735838-AE
3.1
Using the display of the CPU
The display of the SIMATIC S7-1500 CPU offers a fast and direct option to get diagnostics
information. You can call up status information in different menus on the display.
Requirements
● A project has been created.
● The project has been downloaded to the CPU.
Determining diagnostics information using the display of the SIMATIC S7-1500 CPU
To determine diagnostics information using the display, follow these steps:
1. Select the "Diagnostics" menu on the display.
2. Select the "Diagnostics buffer" command from the "Diagnostics" menu.
Figure 3-1 Display of SIMATIC S7-1500 CPU
Quick start
3.1 Using the display of the CPU
Diagnostics
Function Manual, 10/2018, A5E03735838-AE 19
Result
The diagnostics events are displayed in the diagnostics buffer in the sequence in which they
occur.
Figure 3-2 Display of the diagnostics buffer in the display of the SIMATIC S7-1500 CPU
Note
Automatic updating of diagnostics information
You set automatic updating of the diagnostics information under: "Display" >
"DiagnosticRefresh".
Additional information
You can find information about the configuration of alarms in the section Configuring alarms
for system diagnostics (Page 26).
Quick start
3.2 Using STEP 7
Diagnostics
20 Function Manual, 10/2018, A5E03735838-AE
3.2
Using STEP 7
Getting started with STEP 7 gives you fast access to detailed diagnostics information.
Requirements
● A project has been created.
● The project has been downloaded to the CPU.
● An error has occurred.
● The programming device must be able to establish a connection to the CPU via an
interface.
Determining diagnostics information using STEP 7
To determine diagnostics information using STEP 7, follow these steps:
1. Open the respective project in STEP 7.
2. Open the portal view of STEP 7.
3. Select the "Online & Diagnostics" portal.
4. Select the "Online status" action.
The "Select device" dialog opens. The dialog is an image of the configured devices in the
project.
Figure 3-3 Device selection for online connection in the portal view
5. Activate the "Go online" option button for the device that you want to use to establish an
online connection.
6. Click on the "Go online" button.
Quick start
3.2 Using STEP 7
Diagnostics
Function Manual, 10/2018, A5E03735838-AE 21
7. The "Go online" dialog opens.
Figure 3-4 Establishing an online connection
8. Make the settings for the interface.
Quick start
3.2 Using STEP 7
Diagnostics
22 Function Manual, 10/2018, A5E03735838-AE
9. Click on the "Go online" button.
The project view of STEP 7 opens. The network view is opened in the work area.
The symbols in the project tree provide initial information about the faulty modules.
Figure 3-5 Display of the fault in the network view
Quick start
3.2 Using STEP 7
Diagnostics
Function Manual, 10/2018, A5E03735838-AE 23
10.Double-click the device which displays an alarm message to access the faulty module
directly. This is the CPU in the example.
The device view of the CPU is opened in the work area. In this view you can see directly
in which module the error has occurred.
Figure 3-6 Display of the faulty module in the device view
11.Open the "Diagnostics" tab and the subordinate "Device information" tab in the Inspector
window for a more detailed error description.
Quick start
3.2 Using STEP 7
Diagnostics
24 Function Manual, 10/2018, A5E03735838-AE
Result
The link in the "Details" table column takes you to the online and diagnostics view of the
device and to the diagnostics buffer there, for example. This includes more information on all
diagnostics events in the order in which they occurred.
Figure 3-7 Diagnostics buffer with detailed error description
Note
Symbols and their meaning
You can find a legend with the meaning of each symbol in
Explanation of diagnostics
symbols
(Page 32) and in the online help for STEP 7.
Diagnostics
Function Manual, 10/2018, A5E03735838-AE 25
Setting and determining system diagnostics
4
Introduction
System diagnostics is generally available for the devices of the SIMATIC series.
In the properties of each individual CPU, you can specify if you want to receive alarms for
system diagnostics on your display device. Alarms are provided on the display of the
SIMATIC S7-1500 CPU, the CPU Web server and the HMI device. Alarms are enabled by
default. If you do not want to receive alarms for system diagnostics on your display devices,
you can disable the sending of alarms.
Setting and determining system diagnostics
4.1 Configuring alarms for system diagnostics
Diagnostics
26 Function Manual, 10/2018, A5E03735838-AE
4.1
Configuring alarms for system diagnostics
Predefined alarm texts are available for establishing the system diagnostics.
Requirements
● STEP 7 is open.
● A project is open.
Procedure
To make alarm settings for system diagnostics of the project in STEP 7, follow these steps:
1. Open the "Common data" folder in the project tree.
2. Double-click the "System diagnostics settings" entry.
You now have access to the alarm settings. System diagnostics is enabled by default.
System diagnostics cannot be disabled for the use of a CPU from the SIMATIC S7-1500
product series.
Figure 4-1 Properties of system diagnostics and alarm settings
3. In the settings, specify the alarm category that is to be displayed and if it needs to be
acknowledged.
The check boxes in the "Activation" column are enabled by default. When you disable all
check boxes, the status of the HMI system diagnostics view is still updated with the "Info
Report" functionality.
Setting and determining system diagnostics
4.1 Configuring alarms for system diagnostics
Diagnostics
Function Manual, 10/2018, A5E03735838-AE 27
Result
You have configured the alarms for system diagnostics of the project in STEP 7.
The settings are saved with the project and become effective after the compiling and
downloading of the hardware configuration to the involved components.
Maintenance events (maintenance demanded, maintenance required) are entered in the
alarm buffer of the CPU just like any other event.
Setting and determining system diagnostics
4.2 Options for displaying system diagnostics
Diagnostics
28 Function Manual, 10/2018, A5E03735838-AE
4.2
Options for displaying system diagnostics
Example
This section includes a diagnostics example to show how system diagnostics is established
with the help of different display options. The example includes a CPU from the SIMATIC
S7-1500 product series that is connected to an ET 200S distributed I/O system and an HMI
Comfort Panel via PROFINET.
Figure 4-2 System diagnostics display options
The following sections include figures that illustrate how diagnostics information is displayed
with the help of different display options.
● Using the LEDs on the hardware (Page 29)
● Local error analysis via the display of the CPU (Page 30)
● Using STEP 7 as of V12 (Page 32)
● Remote diagnostics using the Web server (Page 51)
● Stationary system diagnostics using the HMI diagnostics view (Page 62)
Setting and determining system diagnostics
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4.2.1
Diagnostics information at the devices
4.2.1.1
LEDs
Overview
All hardware components, such as CPUs, interface modules and modules, provide
information about their operating mode as well as internal and external errors through their
LEDs. Diagnostics by means of LEDs is an initial tool for error localization.
The graphics below include examples for the arrangement of LEDs on some modules.
Table 4- 1 LED displays on the modules
CPU 1516-3 PN/DP
IM 155-5 PN ST
DI 32x24VDC HF
PS 25W 24VDC
①
RUN/STOP LED
(two-colored LED: green/yellow)
RUN LED
(two-colored LED:
green/yellow)
RUN LED
(single-colored LED:
green)
RUN LED
(single-colored LED:
green)
②
ERROR LED
(single-colored LED: red)
ERROR LED
(single-colored LED: red)
ERROR LED
(single-colored LED: red)
ERROR LED
(single-colored LED: red)
③
MAINT LED
(single-colored LED: yellow)
MAINT LED
(single-colored LED:
yellow)
without function
MAINT LED
(single-colored LED:
yellow)
④
X1 P1
(two-colored LED:
green/yellow)
X1 P1
(single-colored LED:
green)
LED CHx
(two-colored LED:
green/red)
⑤
X1 P2
(two-colored LED:
green/yellow)
X1 P2
(single-colored LED:
green)
⑥
X2 P1
(two-colored LED:
green/yellow)
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Additional information
The meaning of the individual LED displays, their different combinations and the remedial
measures resulting from them in case of errors are device-specific. The explanation can be
found in the manuals of the modules.
4.2.1.2
Display of the CPU
Introduction
Each CPU in the S7-1500 automation system has a front cover with a display and operating
keys. You can display status information in various menus on the display of the CPU. You
use the operating keys to navigate through the menus.
Figure 4-3 Display - diagnostics screen
Setting and determining system diagnostics
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Display options
The display of the SIMATIC S7-1500 CPU shows the following diagnostics information:
● CPU operating state
"Diagnostics" menu
● Error and alarm texts (system diagnostics alarms)
● Information entered in the diagnostics buffer
● Watch tables
● Information on the cycle times of the user program
● Utilization of the CPU memory
"Modules" menu
● Information on modules and the network
● Detailed device view with diagnostics symbols
● Order number, CPU version and central I/O modules
● Module status for central and distributed modules
● Information about the currently installed firmware
Additional information
For additional information on the topic "Functions and operation of the display of the
SIMATIC S7-1500 CPU", see the documentation for the S7-1500 automation system
(http://support.automation.siemens.com/WW/view/en/59191792).
You can find detailed information on the individual options, a training course and a simulation
of the available menu commands of the display for the CPU in the SIMATIC S7-1500 Display
Simulator (http://www.automation.siemens.com/salesmaterial-as/interactive-manuals/getting-
started_simatic-s7-1500/disp_tool/start_en.html).
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4.2.2
Diagnostics information in STEP 7
4.2.2.1
Explanation of diagnostics symbols
Diagnostics symbols for modules and devices
When the online connection to a device is established in STEP 7, the diagnostics status of
the device and its lower-level components and, if applicable, the device operating mode are
also determined. The following table shows the possible symbols and their meaning.
Table 4- 2 Diagnostics symbols for modules and devices
Symbol
Meaning
The connection with a CPU is being established.
The CPU is not reachable at the set address.
The configured CPU and the CPU actually present are of incompatible types.
Example: An existing CPU 315-2 DP is incompatible with a configured CPU 1516-
3 PN/DP.
On establishment of the online connection to a protected CPU, the password dia-
log was terminated without specification of the correct password.
No fault
Maintenance required
Maintenance demanded
Error
The module or device is deactivated.
The module or the device cannot be reached from the CPU (valid for modules and
devices below a CPU).
Diagnostics data is not available because the current online configuration data
differ from the offline configuration data.
The configured module or device and the module or device actually present are
incompatible (valid for modules or devices under a CPU).
The configured module does not support display of the diagnostics status (valid for
modules under a CPU).
The connection is established, but the module status has not yet been determined
or is unknown.
Hardware error in lower-level component: A hardware fault has occurred in at least
one lower-level hardware component (occurs as a separate symbol only in the
project tree).
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Symbols for the comparison status
The diagnostics symbols can be combined at the bottom right with additional smaller
symbols that indicate the result of the online/offline comparison. The following table shows
the possible comparison symbols and their meaning.
Table 4- 3 Symbols for the comparison status
Symbol
Meaning
Hardware error in lower-level component: The online and offline versions differ
(only in the project tree) in at least one lower-level hardware component.
Software error in lower-level component: The online and offline versions differ (only
in the project tree) in at least one lower-level software component.
Online and offline versions of the object are different
Object only exists online
Object only exists offline
Online and offline versions of the object are the same
Operating mode symbols for CPUs and CPs
The following table shows the possible symbols and their respective operating states.
Table 4- 4 Operating mode symbols for CPUs and CPs
Symbol
Operating mode
RUN
STOP
STARTUP
DEFECTIVE
Unknown operating mode
The configured module does not support display of the operating mode.
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Event table
The following information is displayed in the table for each diagnostics event:
● Sequential number of the entry
The first entry contains the latest event.
● Date and time of the diagnostics event
If no date and time are shown, the module has no integrated clock.
● Short designation of the event and, if applicable, the reaction of the CPU
● Symbol for information on incoming/outgoing status
The following table shows the possible symbols and their meaning.
Table 4- 5 Symbols in the event table
Symbol
Meaning
Incoming event
Outgoing event
Incoming event for which there is no independent outgoing event
User-defined diagnostics event
Additional information
For additional information on the individual symbols, please refer to the online help for STEP
7.
4.2.2.2
Accessible devices (without project)
Accessible devices
Accessible devices are all devices that are connected to a PG/PC either directly by an
interface or by means of a subnet and that are switched on. These devices can display
diagnostic information even without an offline project.
Requirements
● STEP 7 is open.
● The portal view or project view is open.
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Procedure
To display diagnostic information for specific devices even without an offline project, follow
these steps:
1. Establish a connection to the respective CPU.
2. Select the command "Accessible devices" from the "Online" menu.
The "Accessible devices" dialog opens.
Figure 4-4 "Accessible devices" dialog
3. Make the settings for the interface.
4. Select the respective device under "Accessible nodes of the selected interface".
5. Confirm the dialog with the "Display" button.
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Result
The device is displayed in the project tree. You open the diagnostic information in the work
area with a double-click on "Online & Diagnostics".
Information is available on the diagnostic status, cycle times, memory usage and the
diagnostics buffer.
Figure 4-5 Device in the project tree
4.2.2.3
Devices & networks
Devices & networks - Go online
You can get an overview of the current state of your automation system in the device view or
network view.
You implement the following tasks in the device view:
● Device configuration and parameter assignment
● Module configuration and parameter assignment
You implement the following tasks in the network view:
● Device configuration and parameter assignment
● Networking devices
Requirements
● STEP 7 is open.
● A project is open.
● The project view is open.
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Procedure
To get an overview of the current state of your automation system, follow these steps:
1. Open the "Network view" in the working area.
2. Select the CPU.
3. Click the "Go online" button in the toolbar.
The "Go online" dialog opens.
Figure 4-6 Go online
4. Make the settings for the interface.
5. Select the respective device under "Compatible devices in the target subnet".
6. Confirm the dialog with the "Connect" button.
The online mode is started.
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38 Function Manual, 10/2018, A5E03735838-AE
Result
The connected devices are now displayed with diagnostic information in the network view in
the working area. Here you get an overview of the current state of your automation device.
Figure 4-7 CPU with diagnostic information
You get to the "Device view" with a double-click on the device. The diagnostic information for
the individual modules is displayed in this view.
Note
Symbols and their meaning
You will find a legend with the meaning of each symbol in
Explanation of diagnostics
symbols
(Page 32) and in the online help for STEP 7.
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4.2.2.4
Online & diagnostics
Online mode
In online mode there is an online connection between your PG/PC and one or several
devices. Depending on the properties of a device, you are offered specific diagnostics
options and certain functions in online mode.
● Diagnostics
– General module information
– Diagnostics status
– Cycle time
– Memory
– Diagnostics buffer
– Display
– Interface information (e.g. IP parameter, port information)
● Functions
– Assign IP address
– Set time and date of the CPU
– Firmware update (e.g. for PLC, display)
– Assign device name
– Reset to factory settings
– Format memory card
– Save service data
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To establish an online connection at least one PG/PC interface must be installed that is
physically connected with a device, for example, with an Ethernet cable. The current online
status of a device is indicated by a symbol to the right of the device in the project tree.
Figure 4-8 Partial view of network view
Requirements
● STEP 7 is open.
● A project is open.
● The project view is open.
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Procedure
To display an overview of the faulty devices, follow these steps:
1. Select the affected device folder in the project tree.
2. Select the shortcut menu command "Online & Diagnostics".
The online and diagnostics view of the module to be diagnosed is started.
Figure 4-9 Setting online access
3. Make the settings for the interface.
Here you can change an interface access that has already been set for an online
connection that was successfully established previously.
4. Click on the "Go online" button.
The online connection is established.
Result
You can find detailed diagnostics information on each device in the Inspector window, in the
"Diagnostics" section of the area navigation on the "Properties" tab.
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42 Function Manual, 10/2018, A5E03735838-AE
4.2.2.5
"Diagnostics" tab in the Inspector window
"Diagnostics" tab in the Inspector window
The "Diagnostics" tab of the Inspector window includes information on diagnostics events
and configured alarm events.
Figure 4-10 Diagnostics in the Inspector window, "Device information" tab
Note
Symbols and their meaning
You can
find a legend with the meaning of each symbol in Explanation of diagnostics
symbols
(Page 32) and in the online help for STEP 7.
Subordinate "Device information" tab
This tab gives you an overview of faulty devices to which an online connection exists or has
existed. The table provides the following diagnostics information on the faulty devices:
● Online status: Includes the online status as diagnostics symbol and in words
● Operating mode: Includes the operating mode as symbol and in words
● Device/module: Name of the affected device or the affected module
● Connection established via ...: Specifies the path used to establish the connection to the
failed device.
● Alarm: This explains the entry in the previous columns and displays an alarm, if
necessary
● Details: The link opens the online and diagnostics view associated with the device or puts
it in the foreground.
If the device cannot be reached, the link opens the "Go online" dialog.
● Help: The link provides additional information on the fault.
Note
Communication and access errors
Errors that occur in the user program (e.g.,
communication errors, access errors) are not
reported in the "Diagnostics" tab of the device information. You must read out the
diagnostics buffer of the CPU in the online and diagnostics view to get this information.
The link in the "Details" column opens
the diagnostics buffer.
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Subordinate "Connection information" tab
The "Connection information" tab displays detailed diagnostics information for connections.
There will only be information on the "Connection information" tab if there is an active online
connection to at least one end point of the relevant connection.
If a connection has been selected (connection table), the tab contains the following groups:
● Connection details
● Address details of the connection
Figure 4-11 "Connection information" tab and open connection overview
If a module has been selected (network view), the tab contains the following group:
● Connection resources
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Subordinate "Alarm display" tab
System diagnostics alarms are output in the "Alarm display" tab.
Figure 4-12 "Alarm display" tab
To receive alarms in STEP 7, follow these steps:
1. Open the project view.
2. Select the required CPU in the project tree.
3. To connect online with the respective CPU, select the shortcut menu command "Go
online".
4. Select the required CPU once again in the project tree and select the shortcut menu
command "Receive alarms".
Figure 4-13 Receive alarms
5. Alarms are now displayed in the alarm display. "Archive view" is enabled by default.
6. To display the latest alarms, click the "Active alarms" icon .
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4.2.2.6
CPU diagnostics buffer
Definition
Each CPU and some other modules have their own diagnostics buffer, in which detailed
information on all diagnostic events is entered in the order in which they occurred.
The CPU diagnostics buffer can be displayed on all display media (STEP 7, SIMATIC HMI
devices, SIMATIC S7-1500 Web server and display of the CPU).
Diagnostic events
The entries available in the diagnostics buffer include:
● Internal and external errors on a module
● System errors in the CPU
● Operating mode transitions (e.g., from RUN to STOP)
● Errors in the user program
● Removal/insertion of modules
● Security events
The contents of the diagnostics buffer are stored in the retentive memory in case of a
memory reset of the CPU. Errors or events can be evaluated even after a longer period of
time thanks to the diagnostics buffer to determine the cause of a STOP or to trace the
occurrence of a single diagnostic event and to be able to assign it.
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46 Function Manual, 10/2018, A5E03735838-AE
Procedure
To display the diagnostics buffer of a CPU in STEP 7, follow these steps:
1. Select the respective CPU.
2. Select the shortcut menu command "Online & Diagnostics".
The "Online access" view is opened in the work area.
Figure 4-14 Setting up online access
3. Set the interface.
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4. Click .
5. Select the area "Diagnostics buffer".
Figure 4-15 Diagnostics buffer in STEP 7
Note
Filtering events
You can filter
the entries in the diagnostics buffer in the settings of the "Diagnostics
buffer" area to only display specific types of events. This means that specific events, such
as "CPU and configuration
-internal events" or "Connection diagnostics events", can be
dis
played separately.
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Security events
The following security events (event types) result in an entry in the diagnostics buffer.
● Going online with the correct or incorrect password
● Manipulated communications data detected
● Manipulated data detected on memory card
● Manipulated firmware update file detected
● Changed protection level (access protection) downloaded to the CPU
● Password legitimization restricted or enabled (by instruction or CPU display)
● Online access denied due to the possible number of simultaneous access attempts being
exceeded
● Timeout when an existing online connection is inactive
● Logging on to the Web server with the correct or incorrect password
● Creating a backup of the CPU
● Restoring the CPU configuration (Restore)
To prevent the diagnostics buffer being "swamped" by large numbers of identical security
events, you can set parameters so that these events are entered in the diagnostics buffer as
a group alarm. For every interval (monitoring time), the CPU then only generates one group
alarm per event type.
Configuring a group alarm for security events
To configure group alarms for security events, follow these steps:
1. Click on the CPU icon in the network view.
The properties of the CPU are displayed in the Inspector window.
2. Navigate to the "Protection" > "Security event" area.
3. Click "Security event".
4. Select the option "Summarize security events in case of high message volume" to enable
group alarms for security events.
5. Set the duration of an interval (monitoring period); the default is 20 seconds.
4.2.2.7
"Online tools" task card
Online view in the "Online tools" task card
The following requirements must be met to display the online view of the "Online tools" task
card in STEP 7:
● An online connection to the CPU is available.
● You have selected the CPU in the topology view, network view or device view.
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The "Online tools" task card provides an overview of the CPU state, the cycle time and the
memory usage.
● The "CPU operator panel" pane displays the current state of some LEDs and the mode
selector of a CPU.
● The "Cycle time" pane displays the cycle time diagram and below it the measured cycle
times as absolute values.
● The "Memory" pane contains the current memory usage of the associated CPU. The free
memory is shown both as a bar graph and as a numerical value (percentage).
The display for "Load memory" contains, in addition to the online project data (program
code, data blocks, hardware configuration etc.), all other data that may be on the
SIMATIC memory card, such as recipes, data logs, HMI backups or non-SIMATIC files
that have been copied to the memory card via the Web server of the CPU or offline in
Explorer (for example, PDF files).
Figure 4-16 "Online tools" task card
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50 Function Manual, 10/2018, A5E03735838-AE
4.2.2.8
Configuring the settings for I/O modules in STEP 7
You can also make settings for system diagnostics in STEP 7 for I/O modules. The
parameters you have to configure depend on the I/O module.
The settings are optional.
Requirements
● STEP 7 is open.
● A project is open.
● The project view is open.
● A design with I/O modules has been configured.
Procedure
To make settings for system diagnostics of I/O modules in STEP 7, follow these steps:
1. Select the respective I/O module in the device view.
2. Open the "Properties" tab in the Inspector window.
3. Select the area "Inputs", for example.
You have access to the settings for system diagnostics of the I/O module. If you select
"Wire break", for example, a possible wire break for the channel is signaled during
operation.
Figure 4-17 I/O setting with a digital input module
4. Save the hardware configuration.
5. Download the new hardware configuration to the CPU.
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Additional information
The documentation for the respective module includes additional information on parameter
assignment of I/O modules.
4.2.3
Diagnostics information using the web server
System diagnostics using the CPU Web server
The CPUs of the SIMATIC series have an integrated Web server and let you display the
system diagnostics information by means of PROFINET. Any terminal devices, such as PCs
or smartphones, can thus access module data, user program data and diagnostics data of a
CPU by using an Internet browser. This means access to CPUs is possible without installed
STEP 7.
In addition to normal websites, the Web server provides so-called basic websites with
reduced content that are adapted to the requirements of small screens with low resolution.
Using CPU 1516-3 PN/DP as an example, the following figure shows the start page of the
Web server:
Figure 4-18 Web server, Start page
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The following diagnostics options are available with the integrated Web server:
● Start page with general CPU information
● Information on diagnostics
● Contents of the diagnostics buffer
● Module information
● Alarms
● Information about communication
● PROFINET topology
● Motion Control diagnostics
● Trace
Configuring the Web server in STEP 7
Proceed as follows to activate the Web server:
Requirements
● You have opened STEP 7.
● You have added a CPU to the project.
● You have opened the project view.
Procedure
1. Open the network view.
2. Select the CPU.
3. Open the "Properties" tab in the Inspector window.
4. Select the entry "Web server" in the "General" area navigation.
Figure 4-19 Activate the Web server
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5. Select the "Activate web server on this module" check box.
6. "Permit access only with HTTPS": The activation of the Web server using the secure
transmission protocol "HTTPS" requires a valid Web server certificate in the CPU.
NOTICE
Utilizing the full functionality of the Web server
A valid CA-signed Web server certificate in the CPU is a requirement for:
• User management with password-protected users
• The use of safety-related functions (online backup and restore of the CPU
configuration, saving and downloading diagnostic information in csv files)
To use the full functionality of the Web server, we recommend that you create a CA-
signed server certificate and assign it to the CPU.
To create a CA-signed Web server certificate, you must enable the Certificate Manager
in the global security settings of STEP 7 and assign a CA-signed server certificate to the
Web server in the properties of the CPU.
You can find additional information on handling Web server certificates in the
"Configuring the Web server" section of the Web server function manual
(http://support.automation.siemens.com/WW/view/en/59193560).
Detailed information on Certification Authority (CA) certificates, device certificates (End
Entity certificate), "Public Key Infrastructure" (PKI) and certificate management can be
found in the Communication function manual
(https://support.industry.siemens.com/cs/ww/en/view/59192925) and in the online help
for STEP 7, keyword "Secure communication".
7. Automatic updating is activated in the default setting of a configured CPU.
8. Activate the Web server also for each interface via which you want to access the Web
server.
To do this, open the "Properties" tab in the Inspector window and select the "Web server"
entry in the "General" area navigation. In the "Overview of interfaces" area, select the
"Enabled web server access" check box for the corresponding interface.
9. Compile and load the configuration into the CPU.
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Accessing the Web server
To access the Web server, proceed as follows:
1. Connect the display device (PG/PC, HMI, mobile terminal device) with the CPU or a
communication module using a PROFINET interface.
If you are working with WLAN, activate the WLAN on the display device and establish a
connection to the access point (e.g. SCALANCE W788-1RR or SCALANCE W784-1),
which is in turn connected to the CPU.
2. Open the web browser on the display device.
3. Enter the IP address of the interface of the CPU which is connected to the client in the
"Address" field of the web browser in the following format: http://a.b.c.d or https://a.b.c.d
(example input: https://192.168.3.141).
The intro page of the CPU opens.
4. You need to perform the installation of the CA certificate again for each display device
you want to use. A valid CA certificate is available for download from the "Intro" web page
under "Download certificate". You can find instructions for installing the certificate in the
help system of your Web browser and in the FAQ with the entry ID 103528224 at the
Service&Support (https://support.industry.siemens.com/cs/ww/en/view/103528224)
website.
5. Click the NEXT link to go to the Web server pages.
Note
Managing access rights
In STEP
7, you can create users, define access rights and assign passwords under "
Web
server > User management". Users only have access to the options that are permanently
linked to the access rights.
You can find additional information on managing access rights in the "Configuring the
Web server" section of the Web server function manu
al
(
http://support.automation.siemens.com/WW/view/en/59193560).
Setting and determining system diagnostics
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Function Manual, 10/2018, A5E03735838-AE 55
"Diagnostics" option
The "Diagnostics" web page provides more information about the tabs:
● Identification
This tab contains the characteristics of the CPU (serial number, article number, hardware
and firmware version, etc.).
● Program protection
This tab provides information on whether the PLC program contains know-how protection
or copy protection.
● Memory
This tab contains current values on the memory currently in use.
● Runtime information
Current information on program/communication load and cycle time can be found in this
tab.
● Fail-safe (only with an F CPU)
The safety program of an F-CPU consists of one or two F-runtime groups. You can find
their cycle time (F-monitoring time) and runtime in this tab.
Figure 4-20 Web server, "Diagnostics" Web page
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Diagnostics option "Diagnostics buffer"
The browser displays the content of the diagnostics buffer on the "Diagnostics buffer" Web
page.
Figure 4-21 Web server, "Diagnostics buffer" Web page
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Diagnostics option "Module information"
The status of a device is indicated by the Web browser with symbols and comments on the
"Module information" Web page.
Modules are displayed on the "Module information" Web page in the "Name" column with a
link. You can thus get to the faulty module in hierarchical order.
Figure 4-22 Web server, "Module information" Web page
Diagnostics option "Messages"
The Web browser displays the content of the message buffer on the "Messages" Web page.
The messages can be acknowledged via the Web server if you have the appropriate user
rights.
Figure 4-23 Web server, "Messages" Web page
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Diagnostics option "Communication"
The "Communication" web page provides detailed information about the following tabs:
● Parameter
A summary of the information on the PROFINET and Ethernet interfaces of the selected
CPU is available in this tab.
● Statistics
You will find information on data transmission in this tab.
● Resources
Information about the resource consumption of the connections is available in this tab.
● Connections
Information about the status of the communication connections is available in this tab.
Figure 4-24 Web server, "Communication" Web page
Setting and determining system diagnostics
4.2 Options for displaying system diagnostics
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Function Manual, 10/2018, A5E03735838-AE 59
"Topology" diagnostics option
The "Topology" Web page provides information on the topological configuration and status of
the PROFINET devices in your PROFINET IO system.
Figure 4-25 Web server, "Topology" Web page
Setting and determining system diagnostics
4.2 Options for displaying system diagnostics
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60 Function Manual, 10/2018, A5E03735838-AE
"Motion Control Diagnostics" diagnostic option
The Web server displays statuses, errors, technology alarms and the current values of the
configured technology objects (TOs).
The "Motion Control Diagnostics" web page provides detailed information on the configured
technology objects in the following views:
● Diagnostics
This view provides an overview list of configured technology objects, the status and error
messages of a selected technology object, as well as values and limits of the movement
status for a selected axis.
● Service overview
This view contains diagnostic information for multiple technology objects and a filter
option for selecting the displayed technology objects.
Figure 4-26 Web server, "Motion Control diagnostics" webpage
Setting and determining system diagnostics
4.2 Options for displaying system diagnostics
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"Trace" diagnostic options
You can read, view and save the trace recordings via the Web server and thus obtain plant
and project information for diagnostics and maintenance.
The web page of the trace and logic analyzer function consists of several areas. The
example in the figure below shows how the Web server user interface is divided when the
"Trace" web page is first called.
Figure 4-27 Web server, "Trace" home page (without measurement)
Additional information
Additional information on the topic is available in the Web server function manual
(http://support.automation.siemens.com/WW/view/en/59193560).
You can find additional information on the trace function in the Using the trace and logic
analyzer function (https://support.industry.siemens.com/cs/ww/en/view/64897128) function
manual.
Setting and determining system diagnostics
4.2 Options for displaying system diagnostics
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62 Function Manual, 10/2018, A5E03735838-AE
4.2.4
Diagnostics information using the HMI diagnostics view
Objects for system diagnostics
The full functionality of the HIM diagnostics view is only available with Comfort Panels and
WinCC RT Advanced . Basic Panels do not support the complete range of system
diagnostics functions.
Two objects are available for system diagnostics on an HMI device.
System diagnostics view
The system diagnostics view reflects the current status of all accessible devices in your
plant. You navigate directly to the cause of the error and the associated device. You have
access to all diagnostics-capable devices that you have configured in the STEP 7 hardware
and network editor.
System diagnostics window
The system diagnostics window is an operating element and display object.
The functions of the system diagnostics window are the same as for the system diagnostics
view. Because the system diagnostics window is configured in the "Global screen", you can
also specify, for example, if the object can be closed in WinCC Runtime.
Note
Compatibility with Basic Panels
Only the "System diagnostics view" object is available with Basic Panels.
Basic Panels do not support the "System diagnostics window" object or the graphic symbol
"System diagn
ostics indicator".
Setting and determining system diagnostics
4.2 Options for displaying system diagnostics
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4.2.4.1
Configuring system diagnostics
Introduction
You add a system diagnostics view or a system diagnostics window to your project to get an
overview of all devices available in your plant.
The system diagnostics window behaves like the system diagnostics view but is only
available in the global screen.
Requirements
● At least one CPU has been set up in the project.
● An HMI device (e.g., Comfort Panel) has been set up in the project.
● CPU and the HMI device are connected with each other by an HMI connection.
● You have created a screen (for the system diagnostics view).
● The global screen is open (for the system diagnostics window).
● The Inspector window is open.
Setting and determining system diagnostics
4.2 Options for displaying system diagnostics
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64 Function Manual, 10/2018, A5E03735838-AE
Procedure
Proceed as follows to configure the system diagnostics:
1. Double-click the "System diagnostics view" object in the "Tools" task card. The object is
added to the screen.
Figure 4-28 Adding a system diagnostics view
2. Select the "Properties" tab in the Inspector window.
3. Select the area "Columns".
4. Enable the columns that you require in the device view for WinCC Runtime, for example:
– Status
– Name
– Operating mode
– Slot
– Address
5. Enable the columns that you require in the detail view for WinCC Runtime, for example:
– Status
– Name
– Operating mode
– Plant designation
– Address
6. You can change the column headers in the "Columns" area, if necessary.
7. Select the "Display" area.
8. Enable "Column settings > Columns moveable" to move the columns in WinCC Runtime.
9. To close the system diagnostics window in WinCC Runtime, select "Properties > Window
> Closable" in the "Properties" tab of the Inspector window.
Setting and determining system diagnostics
4.2 Options for displaying system diagnostics
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Result
The system diagnostics view has been added to the screen. The diagnostics status of the
entire plant is displayed in the system diagnostics view in WinCC Runtime.
Figure 4-29 System diagnostics view in the screen
The system diagnostics window has been added to the global screen. If there is an error
message in the plant, the system diagnostics window responds and displays the affected
device.
Setting and determining system diagnostics
4.2 Options for displaying system diagnostics
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66 Function Manual, 10/2018, A5E03735838-AE
4.2.4.2
Different views of the HMI diagnostics view
Introduction
There are three different views available in the system diagnostics view and the system
diagnostics window.
● Device view
● Details view
● Distributed I/O view (only for PROFIBUS and PROFINET systems)
Device view
The device view shows all the available devices of a layer in a table. Double-clicking on a
device opens either the lower-level devices or the detail view. Symbols in the first column
provide information about the current state of the device.
Figure 4-30 Device view
Setting and determining system diagnostics
4.2 Options for displaying system diagnostics
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Details view
The detail view gives detailed information about the selected device and any pending errors.
Check whether the data is correct in the detail view.
Figure 4-31 Details view
Setting and determining system diagnostics
4.2 Options for displaying system diagnostics
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68 Function Manual, 10/2018, A5E03735838-AE
Distributed I/O view
The distributed I/O view is only available for distributed I/O systems. The distributed I/O view
shows the status of the devices of the PROFIBUS/PROFINET subnet.
Each element in the view shows the device name, the device type and the IP address or the
PROFIBUS address.
Figure 4-32 Distributed I/O view
Navigation buttons
Button
Function
Opens the lower-level devices or the detail view if there are no lower-
level devices.
Opens the higher-level device or the device view if there is no higher-
level device.
Opens the device view.
Setting and determining system diagnostics
4.2 Options for displaying system diagnostics
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4.2.4.3
Inserting system diagnostics indicator
Introduction
The system diagnostics indicator is a predefined graphic symbol of the library which alerts
you to errors in your plant.
The library object shows two different states:
● No error
● Error
Requirements
● An HMI device (e.g., Comfort Panel) has been set up in the project.
● The "Libraries" task card is opened.
● The global library "Buttons and Switches > DiagnosticsButtons" is open.
● A screen is open.
● The system diagnostics window has been set up in the global screen.
Setting and determining system diagnostics
4.2 Options for displaying system diagnostics
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70 Function Manual, 10/2018, A5E03735838-AE
Procedure
1. Select the "DiagnosticsIndicator" object in the library.
2. Drag-and-drop the library object to the position in the work area where you want to insert
the object.
The library object is added.
Figure 4-33 Inserting library object in the work area
3. Select the library object.
4. Open the "Events" tab in the Inspector window.
The "ShowSystemDiagnosticsWindow" is preset for the event "Click".
Setting and determining system diagnostics
4.2 Options for displaying system diagnostics
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Result
The system diagnostics indicator has been added to the project and connected with the
system diagnostics window.
The system diagnostics indicator changes its appearance if an error message is output in
WinCC Runtime. The system diagnostics window opens when you click on the system
diagnostics indicator. The system diagnostics window shows the detail view of the affected
device.
Configuring access protection for the system diagnostics window
Configure access protection for the system diagnostics indicator to prevent unauthorized
access to the system diagnostics windows.
1. Select the "DiagnosticsIndicator" object in the screen.
2. Open the "Properties" tab in the Inspector window.
3. Select an authorization in the "Security in Runtime" area.
A logon dialog opens when you click on the system diagnostics indicator in WinCC Runtime.
The system diagnostics window does not open unless you have the required authorization.
4.2.4.4
Configuring button as system diagnostics indicator
Introduction
Instead of using the object "DiagnosticsIndicator" from the library, you can, for example,
configure a button in "Graphic" mode to indicate errors in your plant.
Requirements
● At least one CPU has been created.
● An HMI device (e.g., Comfort Panel) has been set up in the project.
● The "Tools" task card is open.
● A bit graphics list has been created with two different graphics for the states.
● A screen is open.
● You have created a system diagnostics view.
Setting and determining system diagnostics
4.2 Options for displaying system diagnostics
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72 Function Manual, 10/2018, A5E03735838-AE
Procedure
Follow these steps to configure a button as system diagnostics indicator:
1. Double-click the "Button" object in the "Tools" task card. A button is added to the screen.
2. Enable the "Properties" tab in the Inspector window and the "Graphic" mode in the
"General" area.
3. Select the bit graphics list as graphics list.
4. Select the "Properties" tab in the Inspector window and select the tag
@DiagnosticsIndicatorTag under "Tag" in the "General" area.
5. To assign a function to the button, select the "Events" tab in the Inspector window.
6. Select the "Click" event.
7. Click on "Add function" in the table.
8. Select "EnableSystemDiagnosticsView".
9. Select the system diagnostics view.
Setting and determining system diagnostics
4.2 Options for displaying system diagnostics
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Result
You have configured an interface that reacts to error events from the CPU. The button
changes when an error event occurs in Runtime.
Figure 4-34 Configured button
The button has two states.
● Error
The system diagnostics view opens when you click on the button. The system diagnostics
view shows the detail view of the affected device.
● No error
The system diagnostics view opens when you click on the button. The system diagnostics
view shows the device view.
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74 Function Manual, 10/2018, A5E03735838-AE
System diagnostics by means of the user program
5
5.1
Options of system diagnostics in the user program
Introduction
You can configure responses to diagnostics alarms in the user program. You can, for
example, specify that your plant is stopped in case of specific diagnostics alarms.
Instructions
A vendor-independent structure of data records with diagnostics information applies. The
following instructions are available for determining the system diagnostics of a device:
Table 5- 1 Instructions for determining the system diagnostics
Instruction
Description
RDREC
• Reads data records of a component (module or submodule) of a DP slave/IO device that may
contain error information
• Works asynchronously, which means processing takes place across several calls
RALRM
• Reads the start information of the OB when calling the diagnostics interrupt OB (OB 82)
• Provides information on cause and location of error
DPNRM_DG
• Reads the current diagnostics data of a DP slave (DP standard diagnostics)
GEN_DIAG
• Generates diagnostics information
• To generate diagnostics information, the module or submodule is identified with its logical address
Gen_UsrMsg
• Generates an alarm that is entered in the diagnostics buffer
GET_DIAG
• Provides diagnostics information
• To provide diagnostics information, the module or submodule is selected
GET_NAME
• Reads the name of an IO device
T_DIAG
• Provides diagnostics and status information on a connection
• Works asynchronously, which means processing takes place across several calls
RD_SINFO
• Reads the start information of the OB called last that has not been processed completely and the
startup OB started last
• Provides general error information
LED
• Reads the status of the module LED
Get_IM_Data
• Reads the Information&Maintenance data of the CPU
• Works asynchronously, which means processing takes place across several calls
Transfer_IM_Data
• Transmits the Information&Maintenance data of the CPU
DeviceStates
• Outputs the state of all devices of an IO system
ModuleStates
• Outputs the state of all modules of a device
System diagnostics by means of the user program
5.2 System diagnostics using process image inputs
Diagnostics
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Additional information
Online help
In the online help for STEP 7, you can find:
● Additional information on instructions for system diagnostics
● Information about further options for evaluating diagnostic information in the user program
(e.g. with the "RDREC", "RALRM", "GET_DIAG" instructions)
● Information on SIMATIC ProDiag. This functionality enables targeted and fast machine
and plant diagnostics for SIMATIC S7-1500 and SIMATIC HMI:
– Standardized diagnostics concept for different SIMATIC components
– No additional configuration work for diagnostics functionality
– Reduces the load on PLC memory and program run time
You can find details in the online help under "Supervising machinery and plants with
ProDiag".
Manuals
You can find additional information about evaluating diagnostic information in the user
program in the following manuals:
● PROFINET function manual
(http://support.automation.siemens.com/WW/view/en/49948856)
● From PROFIBUS DP to PROFINET IO
(https://support.industry.siemens.com/cs/ww/en/view/19289930) programming manual
● Manual for the respective module
Application examples
You can find detailed application examples with further documentation and example projects
on the Service&Support Website:
● Diagnostics in the user program with S7-1500
(https://support.industry.siemens.com/cs/ww/en/view/98210758)
● System diagnostics with S7-1500 and TIA Portal
(https://support.industry.siemens.com/cs/ww/en/view/68011497)
FAQ
For more information about how to realize channel diagnostics in the user program of the
SIMATIC S7-1500, refer to the FAQ with entry ID 109480387 on the Service&Support
Website (https://support.industry.siemens.com/cs/ww/en/view/109480387).
System diagnostics by means of the user program
5.2 System diagnostics using process image inputs
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76 Function Manual, 10/2018, A5E03735838-AE
5.2
System diagnostics using process image inputs
Introduction
In addition to event-driven system diagnostics, the input and output modules of the SIMATIC
series provide diagnostics information using the process image input.
The system diagnostics described in the preceding sections is made available
asynchronously to the program processing. To ensure the correct processing of the input
and output data in the case of faults while reading the input and output data, some modules
offer the so-called value status (QI = Quality Information) for evaluation.
Requirement for evaluation of the value status
The diagnostics information about the process image input is transmitted synchronized with
the user data. Select the "Value status" check box in the properties of the I/O module in
STEP 7 if you want to evaluate the value status of the channel.
Figure 5-1 Enable value status
System diagnostics by means of the user program
5.2 System diagnostics using process image inputs
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Function Manual, 10/2018, A5E03735838-AE 77
Evaluation of the value status
If you have enabled the value status for an I/O module, this module provides additional
information on the value status in addition to the user data. This information is directly
available in the process image input and can be called with simple binary operations.
Each channel is uniquely assigned one bit in the value status. The bit in the value status
indicates the validity of the read-in value in the user data.
Table 5- 2 Example for evaluation of the user datum in case of a wire break for a digital input module
Bit in user datum
Bit in value status
Value in user datum
Faulty channel
Logical 0
0
Invalid
Fault-free channel Logical 0 (actual value) 1 Valid
Influence of the value status
The value status of an active channel is "Invalid" when any
one
of the following factors is
given:
● Channel diagnostics pending (regardless of whether diagnostics, for example wire break,
is configured for this channel)
● For output channels: "Reaction to CPU STOP" feature is active (due to CPU STOP,
interrupted connection)
● For output channels of the digital on-board I/O of compact CPUs: If a channel is used for
technology functions, it returns the value status 0 ("Invalid"). It does not matter in this
context whether the output value is incorrect or not.
● PROFIenergy is active, i.e. hibernation is enabled (except in "Continue working mode")
When working with non-fail-safe modules, note that an invalid active channel also sets the
value status of all other active channels to "Invalid". We therefore recommend that you
disable all unconnected or unused channels.
System diagnostics by means of the user program
5.2 System diagnostics using process image inputs
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78 Function Manual, 10/2018, A5E03735838-AE
Example - Evaluation of the value status for the input channel of an analog input module
The example below shows the basic evaluation of the value status for the input channel of
an analog input module in the user program. The diameter of a cylinder is measured by
means of a channel and its circumference is calculated.
● If the value status indicates the channel is error-free, the circumference is to be
calculated.
● If the value status indicates the channel is defective, the value "0" is to be output as
substitute value for the circumference.
The figure below shows the evaluation of the value status in the user program.
Figure 5-2 Example - Evaluation of the value status in the user program
Additional information
Depending on the I/O module, the value status reserves different addresses in the process
image input. The manual for the module used includes specific information on the
assignment and arrangement.
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Alarms
6
Introduction
Alarms allow you to display events from processing in the automation system and to quickly
detect errors, to precisely localize them and to remove them. Downtimes are significantly
reduced in a plant.
Before alarms can be output, they need to be configured.
You can create, edit and compile event-dependent alarms along with their alarm texts and
alarm attributes and display them on display devices.
In STEP 7, you create program alarms in the user program with the "Program_Alarm"
instruction. You edit the attributes and alarm texts in the alarm editor in STEP 7.
You can output the alarm status with the "Get_AlarmState" instruction.
Advantages of program alarms
Compared to other alarm methods, such as HMI discrete alarms, program alarms offer the
following advantages:
● Central engineering in STEP 7: You only configure a program alarm once for the CPU.
The program alarm is automatically transferred from the CPU to all registered HMI
devices.
● System-supported acknowledgment: The acknowledgment of a program alarm on an HMI
device is automatically updated on other HMI devices by the CPU.
● Time stamping close to the event in the CPU
● Identical time stamps of the alarms on multiple HMI devices without time synchronization
Alarms
6.1 Creating alarms with the "Program_Alarm" instruction
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80 Function Manual, 10/2018, A5E03735838-AE
6.1
Creating alarms with the "Program_Alarm" instruction
"Program_Alarm" instruction
You create a program alarm in STEP 7 with the "Program_Alarm" instruction.
The figure below shows the "Program_Alarm" instruction with the most important input tags.
①
The "Program_Alarm" instruction monitors the signal at the SIG block input and generates a
program alarm in case of a signal change at the SIG parameter. The instruction generates an
incoming alarm when the signal changes from 0 to 1 and an outgoing program alarm if the
signal changes from 1 to 0. The program alarm is triggered synchronously to program execu-
tion.
②
The time stamp is automatically created when the alarm event occurs in the automation system
and is passed along with the alarm.
③
You can append up to ten associated values to the program alarm at the parameters SD_i (1 ≤
i ≤10). The associated values are acquired at the time of the signal change at the SIG parame-
ter and assigned to the program alarm.
Associated values are used to display dynamic contents in alarms.
Example: The temperature in the tank <associated value 1> is <associated value 2> °C.
You can find more information on associated values in the STEP 7 online help.
Figure 6-1 "Program_Alarm" instruction
Alarms
6.2 Editing alarms in the alarm editor
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Function Manual, 10/2018, A5E03735838-AE 81
Note
The "Program_Alarm" instruction can only be called in a function block.
A program alarm can be up to 256 bytes long in total (with associated values and texts from
the text list).
The a
ssociated values can be a maximum of 512 bytes in length. Text lists are not affected
by this.
The CPUs of the SIMATIC S7
-1500 product series have the following memory for text lists:
•
CPU 1510-x to CPU 1513-x: 2.25 MB
•
CPU 1515-x to CPU 1516-x: 4.5 MB
•
CPU 1517-x to CPU 1518-x: 6.75 MB
The number of configurable program alarms depends on the CPU used. With a CPU 1515
-2
PN, for example, a maximum of 10,000 program alarms are possible. You can find this
information in the device manual for the respective CPU un
der "Number of configurable
alarms".
The number of simultaneously active "Program_Alarms" depends on the CPU used. With a
1515
-
2 PN CPU, for example, a maximum of 600 program alarms are possible. You can find
this information in the device manual for the respective CPU under "Number of reserved user
interrupts".
Sometimes, it is not possible for all program alarms that are active at the same time to be
output within one cycle. Query the status of each "Program_Alarm" and activate the
instruction again, if necessary. The cycle time is increased for a short time by simultaneously
activating/sending multiple "Program_Alarms".
A maximum of 40,000 program alarms should be configured in a STEP 7 project on a 64
-bit
operating system.
Additional information
You can find more information on creating program alarms in the STEP 7 online help under
"Creating and editing alarms".
6.2
Editing alarms in the alarm editor
Introduction
You can edit the created alarms in STEP 7 either in the program editor or in the alarm editor.
You can find additional information on editing alarms in the program editor in the STEP 7
online help under "Creating and editing alarms".
Alarms
6.2 Editing alarms in the alarm editor
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Editing alarms in the alarm editor
You can edit alarm texts in the alarm editor and specify attributes such as alarm class or
priority for the alarms.
1. Double-click "PLC supervisions & alarms" in the project tree. Select the "Alarms" tab. The
alarm editor opens.
2. Enter the required texts and attributes in the appropriate columns.
The figure below shows the layout of the alarm editor.
①
"Program alarms" tab: You can edit program alarms here.
②
"System alarms" tab: System alarms can only be viewed but not edited. To edit these alarms, you must navigate to
the device view ("Go to device" menu command), where you can modify the system diagnostics alarms in the In-
spector window.
③
"Type alarms" area:
This is where the type alarms created in a function block with the "Program_Alarm" instruction are displayed. Type
alarms serves as templates for instance alarms (④).
All the inputs you make for the type alarm are automatically included in the instance alarms derived from it.
You can find more information on type alarms in the STEP 7 online help under "Alarm types and alarms".
④
"Instance alarms" area:
When you assign an instance DB to the message block (for example, call in an OB, FB, FC), instance alarms are
automatically generated based on the template of the type alarm and alarm numbers are assigned.
You can modify the instance alarms for specific instances.
You can find more information on instance alarms in the STEP 7 online help under "Alarm types and alarms".
⑤
Properties of the selected type and instance alarm in the Inspector window
Figure 6-2 Layout of the alarm editor
Alarms
6.2 Editing alarms in the alarm editor
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Function Manual, 10/2018, A5E03735838-AE 83
You can enter or modify the necessary parameters, texts and attributes in the table or in the
Inspector window.
Multilingual alarms
You can have program alarms displayed in multiple languages by assigning different project
languages to the interface languages of the display devices.
Note
The project languages you want to assign must be activated and the c
orresponding texts
(translations) must be available in the project. The project language selection can be found
in the project tree under "Languages & Resources".
To create the texts of the program alarm as multilingual, follow these steps:
1. In the Inspector window of the alarm editor, open the "Properties" tab and the lower-level
"Texts" tab.
2. Enter the text in the desired project language.
3. Open the "Properties" tab in the Inspector window of the CPU and select the "Display"
command in the "General" area navigation. Under "Multilingual", assign one of the
activated project languages to each interface language of the display devices. Overall,
you can assign up to three different project languages to the user interface languages. All
assigned project languages are loaded into the CPU.
Additional information
You can find additional information on texts and attributes in the STEP 7 online help under
"Texts and attributes".
You can find more information on text lists in the STEP 7 online help under "Text lists for
alarms".
Alarms
6.3 Display of program alarms
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84 Function Manual, 10/2018, A5E03735838-AE
6.3
Display of program alarms
Program alarms you create with the "Program_Alarm" instruction are automatically made
available to the display devices.
You have the following options to display the alarms:
● STEP 7
● HMI
● Web server of the CPU
● Display of the CPU
Figure 6-3 Display of program alarms
Multilingual alarms
You can have program alarms displayed in multiple languages by assigning different project
languages to the interface languages. See section Editing alarms in the alarm editor
(Page 81).
Alarms
6.4 Output of the alarm state with the "Get_AlarmState" instruction
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6.4
Output of the alarm state with the "Get_AlarmState" instruction
"Get_AlarmState" instruction
The "Get_AlarmState" instruction outputs the alarm state of a program alarm. The output of
the alarm state always refers to a program alarm that was created using the
"Program_Alarm" instruction.
The program alarm is selected with the "Alarm" input parameter. Specify the instance DB of
the "Program_Alarm" instruction at the "Alarm" parameter.
Figure 6-4 Call - Get_AlarmState
Additional information
You can find additional information on evaluation of the "Get_AlarmState" instruction in the
STEP 7 online help.
Alarms
6.5 Example program for program alarms
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86 Function Manual, 10/2018, A5E03735838-AE
6.5
Example program for program alarms
6.5.1
Task
Introduction
This section describes the basic configuration of program alarms with the "Program_Alarm"
instruction based on two examples. The two examples solve the same problem but use a
different approach. Example 1 does not use associated values. In example 2, an associated
value is assigned to the program alarm to reference a text list.
Example - Minimum/maximum fill level of a tank
A tank is filled with a liquid. The fill level is monitored by two sensors.
If the liquid in the tank drops below a minimum fill level, an alarm is output for low fill level.
If the liquid in the tank exceeds a maximum fill level, an alarm is output for high fill level.
Figure 6-5 Example for fill level alarms
Alarms
6.5 Example program for program alarms
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6.5.2
Example 1: Program alarm without associated values
Introduction
In this example, you create a program alarm for the maximum and the minimum fill level.
How the example works
When the maximum fill level is exceeded in the tank, a program alarm with the alarm text for
the excessive fill level is output.
When the minimum fill level is undershot in the tank, a program alarm with the alarm text
indicating that the fill level is too low is output.
Steps
The following steps are necessary for this example:
1. Define tags for signal acquisition
2. Create function block
3. Create program alarms
4. Call function block
5. Edit alarm text
Define tags for signal acquisition
The following table shows the tags that are used in this example. Define these tags in the
standard tag table. The standard tag table is available in the project tree under "PLC tags".
Table 6- 1 Tags for fill level alarms
Name
Data type
Description
max BOOL Tag for maximum fill level
If "max" = 1, the maximum fill level is exceeded.
min BOOL Tag for minimum fill level
If "min" = 1, the minimum fill level is undershot.
The figure below shows the standard tag table with the defined tags "max" and "min".
Figure 6-6 Define tags
Alarms
6.5 Example program for program alarms
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Create function block
To create a function block, follow these steps:
1. Open the "Program blocks" folder in the project tree.
2. Double-click "Add new block".
The "Add new block" dialog opens.
3. Select the button "Function block".
Figure 6-7 Create FB
4. Enter a name for the new block.
5. Select the language SCL.
6. Click on "OK" to confirm your input.
Result: You have created a function block.
Alarms
6.5 Example program for program alarms
Diagnostics
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Create program alarms
To create the program alarm for the example program, follow these steps:
1. Select the created function block (FB) in the "Program blocks" folder in the project tree
and double-click the function block to open it.
2. Insert the call of the "Program_Alarm" instruction in the instruction part of the function
block. The "Program_Alarm" instruction is available in the "Instructions" task card under
"Extended instructions" > "Alarms".
The "Call options" window opens.
Figure 6-8 Call Program_Alarm
3. Enter "level_max" as the name and confirm the call options by clicking "OK".
Result: The input tags of the "Program_Alarm" instruction are displayed in the instruction
part.
4. Supply the SIG input tag of the "Program_Alarm" instruction with the tags for the
maximum fill level.
#level_max(SIG:="max");
SIG: If a signal change occurs at the SIG input tag, the "Program_Alarm" instruction
generates a program alarm.
5. Insert another call of the "Program_Alarm" instruction.
The "Call options" window opens.
6. Enter "level_min" as the name and confirm the call options by clicking "OK".
Result: The input tags of the "Program_Alarm" instruction are displayed in the instruction
part.
7. Supply the SIG input tag of the "Program_Alarm" instruction with the tags for the
minimum fill level.
#level_min(SIG:="min");
Result: You have created two type alarms.
Alarms
6.5 Example program for program alarms
Diagnostics
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Call function block
To call the function block in the user program, follow these steps:
1. In the "Program blocks" folder, select the cycle OB (e.g., OB1) in which you want to call
the function block and open the cycle OB with a double-click.
2. Select the function block you want to call in the "Program blocks" folder.
3. Drag the function block into the instruction part of the cycle OB.
The "Call options" window opens.
Figure 6-9 Call function block
4. Confirm the call options by clicking "OK".
Result: You have called the alarm block in the user program and created an instance alarm.
Alarms
6.5 Example program for program alarms
Diagnostics
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Edit alarm text
To edit the alarm text, follow these steps:
1. Double-click "PLC supervisions & alarms" in the project tree. Select the "Alarms" tab. The
alarm editor opens.
2. Select the type alarm for the maximum fill level.
3. Enter the alarm text for the maximum fill level in the "Alarm text" column.
4. Select the type alarm for the minimum fill level.
5. Enter the alarm text for the minimum fill level in the "Alarm text" column.
Figure 6-10 Edit alarm text
Result: You have created the alarm texts for both type alarms.
Additional information
You can learn how to create multilingual texts under "Multilingual alarms" in the section
Editing alarms in the alarm editor (Page 81).
Alarms
6.5 Example program for program alarms
Diagnostics
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6.5.3
Example 2: Program alarm with associated value
Introduction
In this example, you create a shared program alarm for the maximum and the minimum fill
level. The program alarm is given an associated value. The program alarm uses the
associated value to access a text list entry and outputs a separate alarm text for the
minimum and the maximum fill level.
How the example works
The program alarm is output if either the minimum fill level is undershot or the maximum fill
level is exceeded.
The associated value 1 of the "Program_Alarm" instruction is assigned the tag for the
maximum fill level. The associated value references a text list with the entries "0" and "1".
The following scenarios are possible for output of the alarm text:
● Associated value is "0": The entry "0" of the text list with the alarm text for the undershot
fill level is output.
● Associated value is "1": The entry "1" of the text list with the alarm text for the excessive
fill level is output.
Steps
The following steps are necessary for this example:
1. Define tags for signal acquisition
2. Create function block
3. Create program alarm
4. Call function block
5. Create a text list
6. Edit alarm text
Alarms
6.5 Example program for program alarms
Diagnostics
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Define tags for signal acquisition
The following table shows the tags that are used in this example. Define these tags in the
standard tag table. The standard tag table is available in the project tree under "PLC tags".
Table 6- 2 Tags for fill level alarms
Name
Data type
Description
max BOOL Tag for maximum fill level
If "max" = 1, the maximum fill level is exceeded.
min BOOL Tag for minimum fill level
If "min" = 1, the minimum fill level is undershot.
The figure below shows the standard tag table with the defined tags "max" and "min".
Figure 6-11 Define tags
Alarms
6.5 Example program for program alarms
Diagnostics
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Create function block
To create a function block, follow these steps:
1. Open the "Program blocks" folder in the project tree.
2. Double-click "Add new block".
The "Add new block" dialog opens.
3. Select the button "Function block".
Figure 6-12 Create FB
4. Enter a name for the new block.
5. Select the language SCL.
6. Click on "OK" to confirm your input.
Result: You have created a function block.
Alarms
6.5 Example program for program alarms
Diagnostics
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Create program alarm
To create the program alarm for the example program, follow these steps:
1. Select the created function block (FB) in the "Program blocks" folder in the project tree.
2. Insert the call of the "Program_Alarm" instruction in the instruction part of the function
block. The "Program_Alarm" instruction is available in the "Instructions" task card under
"Extended instructions" > "Alarms".
The "Call options" window opens.
Figure 6-13 Call Program_Alarm
3. Enter "level_alarm" as the name and confirm the call options by clicking "OK".
Result: The input tags of the "Program_Alarm" instruction are displayed in the instruction
part.
4. Supply the SIG input tag of the "Program_Alarm" instruction with the XOR logic operation
of the tags for minimum and maximum fill level and the input tag SD_1 with the tag for the
maximum fill level.
#level_alarm(SIG:="min"XOR"max",SD_1:="max");
SIG: If a signal change occurs at the SIG input tag, the "Program_Alarm" instruction
generates a program alarm.
SD_1: The associated value is acquired at the time of the signal change at the input tag
and assigned to the program alarm.
Result: You have created a type alarm.
Alarms
6.5 Example program for program alarms
Diagnostics
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Call function block
To call the function block in the user program, follow these steps:
1. In the "Program blocks" folder, select the cycle OB (e.g., OB1) in which you want to call
the function block and open the cycle OB with a double-click.
2. Select the function block you want to call in the "Program blocks" folder.
3. Drag the function block into the instruction part of the cycle OB.
The "Call options" window opens.
Figure 6-14 Call function block
4. Confirm the call options by clicking "OK".
Result: You have called the alarm block in the user program and created an instance alarm.
Alarms
6.5 Example program for program alarms
Diagnostics
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Creating a text list
To create the text list for the example program, follow these steps:
1. Double-click on the "Text lists" command in the program tree.
The text list editor opens.
2. Double-click "<Add>" in the Text lists area.
A new text list is added.
3. Name the text list "level_textlist".
4. Double-click "<Add>" in the Text list entries area of level_textlist.
A new text list entry is added in the level_textlist text list.
5. Enter the alarm text for the maximum fill level in the "Entry" column.
6. Add another entry in the text list.
7. Enter the alarm text for the minimum fill level in the "Entry" column.
Figure 6-15 Creating a text list
Result: You have created the text list for the alarm text.
Alarms
6.5 Example program for program alarms
Diagnostics
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Edit alarm text
To edit the alarm text for the example program, follow these steps:
1. Double-click "PLC supervisions & alarms" in the project tree. Select the "Alarms" tab. The
alarm editor opens.
2. Select the type alarm created for the example.
3. Click in the "Alarm text" column.
4. Open the shortcut menu and select the command "Insert a dynamic parameter (text list)".
Figure 6-16 Edit alarm text
The window below opens.
Figure 6-17 Insert a dynamic parameter (text list)
5. Select the text list "level_textlist" and the tag "max". Confirm your selection by clicking
"OK".
Result: You have created the alarm text for the type alarms.
If the tag "max" (associated value 1) is 0, the alarm text "level too low" is output.
If the tag "max" (associated value 1) is 1, the alarm text "level too high" is output.
Additional information
You can learn how to create multilingual texts under "Multilingual alarms" in the section
Editing alarms in the alarm editor (Page 81).
Alarms
6.5 Example program for program alarms
Diagnostics
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6.5.4
Displaying the alarm
Displaying the alarm in the Web server
The figure below shows the display of the alarm in the Web server for both examples.
Figure 6-18 Displaying the alarm in the Web server
Displaying the alarm in STEP 7
Note
Displaying alarms in STEP 7
To display alarms in STEP 7, enable the option "Receive alarms" in the shortcut menu of the
CPU.
The figure below shows the display of the alarm in STEP 7 for both examples.
Figure 6-19 Display in STEP 7
Diagnostics
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Diagnostics of the S7-1500R/H redundant system
7
S7-1500R/H diagnostics
Diagnostics for a S7-1500R/H redundant system is basically the same as a standard S7-
1500. You have the following display options:
● Via STEP 7
● Via HMI devices
● Via the display of the CPUs
The CPUs provide information about their operating states as well as internal and external
errors through their LEDs.
The special features of the diagnostics of S7-1500R/H redundant systems are described
below. In addition, the information of the current function manual and the STEP 7 online help
also apply to S7-1500R/H redundant systems.
Diagnostics information in STEP 7
Hardware diagnostics can be performed as follows:
● Via the Online and Diagnostics view
● Via the "Online Tools" task card
● Via the "Diagnostics > Device Information" area of the Inspector window
● Via diagnostics icons, for example, in the device view and in the project tree
Diagnostics of the S7-1500R/H redundant system
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Diagnostics view in STEP 7 in dependence on the online connection and system states
The diagnostics view for S7-1500R/H redundant systems is partly dependent on:
● Which of the two CPUs the programming device / PC currently has a connection to
● The current system state in the redundant system
The table below provides an overview. The following sections illustrate the diagnostics view
for S7-1500R/H using examples.
Table 7- 1 Diagnostics view in dependence on the online connection and system states
Diagnostics view in STEP 7
An online connection is
available to the
System state
Examples in section
Online data and diagnostics of the redundant system Primary CPU or backup
CPU
RUN-Redundant Online and Diagnos-
tics view (Page 103)
Online data and diagnostics of the primary CPU
The following are not displayed: Online data and di-
agnostics from the backup CPU
Primary CPU RUN-Solo or
STOP
Online and Diagnos-
tics view (Page 103)
and
Restrictions in the
RUN-Solo system
state (Page 120)
Online data and diagnostics of the backup CPU
The following are not displayed:
• Online data and diagnostics from the primary CPU
• Online data and diagnostics of the distributed I/O
Backup CPU RUN-Solo or
STOP
Display of the 3 operator panels in the "Online Tools"
task card
Primary CPU or backup
CPU
Not relevant "Online Tools" task
card (Page 106)
Cycle time of the primary CPU (of the system) and
memory of the primary CPU in "Online Tools" task
card
Primary CPU or backup
CPU
RUN-Redundant
Cycle time and memory of the primary CPU in the
"Online Tools" task card
Primary CPU RUN-Solo or
STOP
Cycle time and memory of the backup CPU in the
"Online Tools" task card
Backup CPU RUN-Solo or
STOP
Memory reset of the primary CPU via "Online Tools"
task card
Primary CPU STOP
Memory reset of the backup CPU via "Online Tools"
task card
Backup CPU RUN-Solo or
STOP
"Alarm display" tab: Alarms from the primary CPU
Primary CPU
Not relevant
Diagnostics view in
the project tree and
in the device view
and network view
(Page 109)
"Alarm display" tab: Alarms from the backup CPU Backup CPU Not relevant
Diagnostics of the distributed I/O Primary CPU or backup
CPU
RUN-Redundant Diagnostics in the
RUN-Redundant
system state
(Page 114)
Diagnostics of the distributed I/O Primary CPU RUN-Solo Restrictions in the
RUN-Solo system
state (Page 120)
Diagnostics of the S7-1500R/H redundant system
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Accessible devices
As for standard S7-1500 systems, the following can be displayed in STEP 7:
● All devices accessible from programming device/PC
● The diagnostics information of devices of a redundant system, for example, from the R/H
CPUs
The procedure is described in the section Accessible devices (without project) (Page 34).
Diagnostics of the S7-1500R/H redundant system
7.1 Online and Diagnostics view
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7.1
Online and Diagnostics view
Introduction
You open the Online and Diagnostics view for the redundant system or for each CPU of the
redundant system.
Online & diagnostics for the redundant system
"Online access":
For the S7-1500R/H redundant system, it is displayed whether an online connection exists
between the programming device/PC and a CPU. The additional note "Online (via Primary
CPU)" or "Online (via Backup CPU)" indicates which role the "Online" connected CPU has.
If you enable "Receive alarms", you receive asynchronous alarms of diagnostics events from
the CPU with online connection. The display corresponds to the representation for standard
CPUs.
Figure 7-1 Online and Diagnostics view: Redundant system S7-1500R/H
Diagnostics of the S7-1500R/H redundant system
7.1 Online and Diagnostics view
Diagnostics
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"Diagnostics":
"Diagnostics" provides an overview for the redundant system about the:
● System state
● Pairing state
● Operating states of the CPU
● Status of which CPU is the primary CPU and which CPU is the backup CPU
Figure 7-2 Online and Diagnostics view: Diagnostics status of the S7-1500R/H system
Diagnostics of the S7-1500R/H redundant system
7.1 Online and Diagnostics view
Diagnostics
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Online & diagnostics for the primary CPU or backup CPU
The Online and Diagnostics view for the CPUs of the redundant system match the display for
standard CPUs.
In the RUN-Redundant system state, the primary and backup CPU display the online data of
the redundant system irrespective of which of the two CPUs the online connection has been
made.
In the RUN-Solo system state, the programming device/PC displays the data of the CPU for
which there is an online connection, i.e. either the primary CPU or of the backup CPU.
You select the CPU for display of the online data in the project tree.
Figure 7-3 Online and Diagnostics view: CPU (RUN-Redundant system state)
Reference
You can find information on the operating and system states in the Redundant System S7-
1500R/H System Manual (https://support.industry.siemens.com/cs/ww/en/view/109754833).
Diagnostics of the S7-1500R/H redundant system
7.2 "Online Tools" task card
Diagnostics
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7.2
"Online Tools" task card
Introduction
If an online connection exists to a CPU of the redundant system, the "Online Tools" task card
displays online information for the redundant system.
For a S7-1500R/H redundant system, "Online Tools" displays:
● 3 panes operator panel
● Cycle time
● Memory
R/H system operator panel
For the redundant system, the "R/H system operator panel" pane shows the:
● Current states of the LEDs of the primary CPU
● System state
● Status of which CPU is the primary CPU and which CPU is the backup CPU with their
current operating states
The "STOP R/H-System" button can be used to switch the S7-1500R/H system to the
system state STOP.
Note
Reaching RUN-Redundant system state
Note that you cannot switch the S7
-1500R/H to RUN-Redundant system state using the R/H
-
System operator panel. You reach the RUN
-Redundant system state by switching the
operating state for each CPU t
o RUN in the operator panel of the respective CPU.
CPU operator panel
The two "CPU operator panel" panes show for the respective CPU of the redundant system:
● The role of the CPU, primary CPU or backup CPU
● The current states of the LEDs
● The operating state of the CPU
Use the "RUN / STOP" button to change the operating state for the respective CPU.
Use the "MRES" button to perform a memory rest for the CPU, under the following
conditions:
● Online connection to this CPU is available
● The CPU is in STOP operating state.
Diagnostics of the S7-1500R/H redundant system
7.2 "Online Tools" task card
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Example
The following figure shows an example of the "Online Tools" task card for the RUN-Solo
system state. The primary CPU is in RUN operating state, the backup CPU in STOP
operating state.
As long as the backup CPU is in STOP operating state, the backup CPU does not establish
any connection to the I/O devices. Therefore, the ERROR LED of the backup CPU always
flashes red in the system states STOP and RUN-Solo.
Figure 7-4 "Online Tools" task card: Operator panel (RUN-Solo system state)
Diagnostics of the S7-1500R/H redundant system
7.2 "Online Tools" task card
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Cycle time and memory
In the RUN-Redundant system state, the "Cycle time" and "Memory" panes show the current
values of the primary CPU. In redundant mode, the cycle time of the primary CPU matches
the cycle time of the system.
In the RUN-Solo system state, the panes show the current values for the CPU for which
there is an online connection.
The display corresponds to the representation for standard CPUs.
Figure 7-5 "Online Tools" task card: Cycle time and memory of the primary CPU
Reference
You can find information on the operating and system states in the Redundant System
S7-1500R/H System Manual
(https://support.industry.siemens.com/cs/ww/en/view/109754833).
Diagnostics of the S7-1500R/H redundant system
7.3 Diagnostics view in the project tree and in the device view and network view
Diagnostics
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7.3
Diagnostics view in the project tree and in the device view and
network view
Additional icons for redundant systems in the project tree
Table 7- 2 Icons for redundant systems in the project tree of STEP 7
Icon in the project
tree
Meaning
Identifier of the folder S7-1500R/H-System:
RUN-Redundant system state
Identifier of the folder S7-1500R/H-System:
RUN-Solo system state
Identifier of the folder S7-1500R/H-System:
STARTUP system state
Identifier of the folder S7-1500R/H-System:
STOP system state
Identifier of the folder for the primary CPU:
RUN operating state
Identifier of the folder for the backup CPU:
RUN operating state
Identifier of the folder for the primary CPU:
STARTUP operating state
Identifier of the folder for the backup CPU:
STARTUP operating state
Identifier of the folder for the primary CPU:
STOP operating state
Identifier of the folder for the backup CPU:
STOP operating state
Identifier of the folder of a CPU of the redundant system:
"Online via partner": The other CPU of the redundant system is connected
online to the programming device / PC.
Example: Diagnostics view in the project tree and in the device view and network view
An example of the diagnostics view for a S7-1500R/H system is shown below.
The sample configuration consists of two CPUs S7-1517H-3 PN and one interface module
IM 155-6 PN HF as PROFINET IO device. PLC_1 is the primary CPU (in RUN operating
state). PLC_2 is the backup CPU (in STOP operating state). The hardware configuration and
the user program were loaded in the primary CPU.
The system is connected online via PLC_1 (primary CPU) and is in RUN-Solo system state.
Diagnostics of the S7-1500R/H redundant system
7.3 Diagnostics view in the project tree and in the device view and network view
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View of the system in the project tree
The system is in RUN-Solo system state . PLC_1 is in RUN operating state , PLC_2 is
in STOP operating state .
Because the system is in RUN-Solo system state, the following is displayed:
● For the system, maintenance demanded with problem in lower-level component
● For PLC_1, maintenance demanded
For PLC_2, online connection via partner is displayed, as the programming device/PC is
connected online to PLC_1.
Figure 7-6 Diagnostics example: Redundant system project tree (RUN-Solo)
Diagnostics of the S7-1500R/H redundant system
7.3 Diagnostics view in the project tree and in the device view and network view
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Network view of the system
The network view shows no faults for the H-CPUs or the IO device.
Maintenance demanded in lower-level component indicated for the system, since the system
is in RUN-Solo system state.
No operating states and system states of the redundant system are displayed in the network
view.
Figure 7-7 Diagnostics example: Network view of redundant system (RUN-Solo)
Doubling-clicking on the system gives you access to the device view of both CPUs.
Diagnostics of the S7-1500R/H redundant system
7.3 Diagnostics view in the project tree and in the device view and network view
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Device view of the system
In the device view, you see the operating states of the CPUs based on the icons above
PLC_1:
● Green icon: PLC_1 is in the RUN operating state.
● Yellow icon for maintenance demanded: PLC_2 is in the STOP operating state.
PLC_2 indicates that the online connection is available through the partner (PLC_1).
You can find more detailed information on the system faults in the "Diagnostics" tab, in
"Device information". The device information indicates maintenance demanded and RUN
operating state for PLC_1.
Figure 7-8 Diagnostics example: Device view of redundant system (RUN-Solo)
Diagnostics of the S7-1500R/H redundant system
7.3 Diagnostics view in the project tree and in the device view and network view
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Alarm display of the system
As in the RUN-Solo system state, the alarms of the CPU for which there is an online
connection are displayed via the "Alarm display" tab (in the example from PLC_1).
Figure 7-9 Diagnostics example: Alarm display of redundant system (RUN-Solo)
Device view of the IO device
The IO device is an interface module IM 155-6 PN HF with two I/O modules and one server
module. The device view shows that there is no faults in the modules.
Figure 7-10 Diagnostics example: Device view of IO device
Diagnostics of the S7-1500R/H redundant system
7.4 Diagnostics in the RUN-Redundant system state
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7.4
Diagnostics in the RUN-Redundant system state
Diagnostics view in redundant mode
Primary CPU and backup CPU are each in the RUN-Redundant operating state.
In the RUN-Redundant system state, the primary and backup CPU display the online data of
the redundant system irrespective of which of the two CPUs the online connection has been
made.
The diagnostics between the two CPUs is synchronized (diagnostics entries, diagnostics
events).
As in the RUN-Solo system state, the alarms of the CPU to which there is an online
connection are displayed via the "Alarm display" tab. You can find more information in the
Diagnostics view in the project tree and in the device view and network view (Page 109).
No error in RUN-Redundant system state
If no error is detected in the RUN-Redundant system state, all diagnostics icons in the
navigation tree and in the network view show "No fault" .
Figure 7-11 Diagnostics example: No fault in the RUN-Redundant project tree
Diagnostics of the S7-1500R/H redundant system
7.4 Diagnostics in the RUN-Redundant system state
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Error in the RUN-Redundant system state
If there are too many errors in the redundant system, the RUN-Redundant system state is
retained, for example, if a module in an IO device fails. The diagnostics view is similar to the
standard S7-1500 systems.
Special examples of a redundant system S7-1500H are shown below:
S7-1500H Example 1:
The PROFINET ring was interrupted.
Evaluate diagnostics via LINK TX/RX LEDs on the CPU
TX/RX X1 P1 LED is not illuminated. This means:
● No Ethernet connection between the P1 port of the respective PROFINET interface and
the communication partner
Diagnostics in STEP 7
The diagnostics in the project tree shows:
● Maintenance demanded in lower-level component in the S7-1500H system
● Maintenance demanded in lower-level component for PLC_1 and PLC_2
● Maintenance demanded in lower-level components of local modules of PLC_2
The diagnostics in the network view indicates errors at the affected port of the PROFINET
interfaces of PLC_2.
Figure 7-12 Diagnostics example: RUN-Redundant system state, open PROFINET ring
You can evaluate the diagnostics using the displays of the CPUs via the "Diagnostics" menu
as with standard CPUs. You can find additional information in the section Display of the CPU
(Page 30).
Diagnostics of the S7-1500R/H redundant system
7.4 Diagnostics in the RUN-Redundant system state
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S7-1500H Example 2:
A synchronization module has been removed in S7-1500H.
Evaluating diagnostics via X3 and X4 LEDs on the CPU
The X3 LED on PLC_2 CPU is not illuminated. This means:
● The redundancy connection on the synchronization module was interrupted at the H-Sync
interface X3.
or
● There is no synchronization module at the H-Sync interface X3.
Diagnostics in STEP 7
The diagnostics in the project tree shows:
● Maintenance demanded in lower-level component in the S7-1500H system
● Maintenance demanded for PLC_1
● Maintenance demanded in lower-level component for PLC_2
● Hardware fault in local modules of PLC_1 and PLC_2
Diagnostics of the S7-1500R/H redundant system
7.4 Diagnostics in the RUN-Redundant system state
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The diagnostics in the network view indicates that synchronization module 1 of PLC_2 is not
accessible.
Figure 7-13 Diagnostics example: RUN-Redundant system state, a synchronization module fails
Diagnostics of the S7-1500R/H redundant system
7.4 Diagnostics in the RUN-Redundant system state
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Evaluate diagnostics on the display
For example 2, display of the PLC_2 CPU shows:
● In the "Overview" menu command: A message is available in the next lower level page.
● In the "Diagnostics" menu command: A message is available in the next lower level page.
● In the Module menu command: An error has occurred.
To evaluate the display, proceed as follows:
1. Navigate to "Pairing state" via the menu commands "Overview" > "Redundancy".
2. This is displayed as the pairing state: Single paired (X4).
This means that the redundancy connection is available at the H-Sync interface X4, but
not at the X3.
3. Navigate to "Alarms" via the "Diagnostics" menu command.
4. View the details of the alarm (evaluate diagnostics buffer).
S7-1500H Example 3:
A
redundancy connection in S7-1500H is interrupted.
Evaluating diagnostics via X3 and X4 LEDs on the CPU
The X4 LED on PLC_2 CPU is not illuminated. This means:
● The redundancy connection on the synchronization module was interrupted at the H-Sync
interface X4.
or that
● There is no synchronization module at the H-Sync interface X4.
Diagnostics in STEP 7
The diagnostics in the project tree shows:
● Maintenance demanded in lower-level component in the S7-1500H system
● Maintenance demanded for PLC_1 and PLC_2
● Hardware fault in local modules of PLC_1 and PLC_2
Diagnostics of the S7-1500R/H redundant system
7.4 Diagnostics in the RUN-Redundant system state
Diagnostics
Function Manual, 10/2018, A5E03735838-AE 119
Maintenance demanded is displayed for both CPUs in the network view. The lower-level
components have no fault.
Figure 7-14 Diagnostics example: RUN-Redundant system state, a redundancy connection has failed
Evaluate diagnostics on the display
Perform the analysis of the display of PLC_2 CPU exactly as for example 2.
Diagnostics of the S7-1500R/H redundant system
7.5 Restrictions in the RUN-Solo system state
Diagnostics
120 Function Manual, 10/2018, A5E03735838-AE
7.5
Restrictions in the RUN-Solo system state
The primary CPU is in RUN operating state. The Backup CPU is in STOP operating state, is
switched off, defective, or not available.
Restrictions in the RUN-Solo system state
The primary CPU records the diagnostics states of the distributed I/O.
Figure 7-15 Diagnostics of the primary CPU and backup CPU in RUN-Solo system state
Diagnostics of the backup CPU
The following restrictions apply to the backup CPU:
● Diagnostics information from the backup CPU is only available when there is an online
connection to the backup CPU.
● The distributed I/O is not accessible from the backup CPU. As a result the ERROR LED
of the backup CPU always flashes red in the STOP and RUN-Solo system states.
● A memory reset can only be performed with the backup CPU operator panel when an
online connection to the backup CPU is available.
Diagnostics of the S7-1500R/H redundant system
7.6 System diagnostics by means of the user program
Diagnostics
Function Manual, 10/2018, A5E03735838-AE 121
Reference
You can evaluate the diagnostics using the displays of the CPUs via the "Diagnostics" menu
as with standard CPUs. You can find additional information in the section Display of the CPU
(Page 30).
7.6
System diagnostics by means of the user program
Instructions
Instructions for determining the system diagnostics are listed in the section System
diagnostics options in the user program (Page 74).
The following instructions for diagnostics
cannot
be used for S7-1500R/H redundant
systems:
● GEN_DIAG: Generate diagnostics information
● GEN_UsrMsg: Generate user diagnostic alarms
● GetStationInfo: Read information of an IO device
● DeviceStates: Read module state information in an IO system
Please note: The "DeviceStates" instruction can be selected in STEP 7. The S7-1500R/H
CPUs with firmware version V2.6 do not support the "DeviceStates" instruction. Do
not
use the "DeviceStates" instruction. To read out the module state information, use the
"Get_DIAG" instruction.
Diagnostics
122 Function Manual, 10/2018, A5E03735838-AE
Glossary
Alarm
An message sent to the operator due to events or states of the system.
Backup CPU
Role of a CPU in the S7-1500R/H redundant system. If the R/H system is in RUN-Redundant
system state, the primary CPU controls the process. The backup CPU processes the user
program synchronously and can take over the process control if the primary CPU fails.
Button (WinCC)
Object in WinCC that points out faults in the plant
Channel fault
Channel-related error of an individual channel - an I/O with inputs, for example, wire break or
short circuit
Device
Modules with a network connection are referred to as device. Devices are installed on racks
where they can be interconnected with other modules.
Diagnostics buffer
A buffered memory area in the CPU; it stores diagnostics events in the order of their
occurrence
Firmware of the CPU
In SIMATIC, a distinction is made between the firmware of the CPU and user programs.
The firmware is a software embedded in electronic devices, which means it is permanently
connected with the hardware functionally. It is usually saved in a flash memory, such as
EPROM, EEPROM or ROM, and cannot be replaced by the user or only with special means
or functions.
User program: see glossary entry "User program"
Global screen (WinCC)
A screen that is opened in the system diagnostics window is a global screen.
Glossary
Diagnostics
Function Manual, 10/2018, A5E03735838-AE 123
HMI device
H
uman
M
achine
I
nterface, device for visualization and control of automation processes.
HMI diagnostics view (WinCC)
The HMI diagnostics view is an object in WinCC. The HMI diagnostics view can only be used
with Comfort Panels and WinCC Advanced RT.
I/O module
Device of the distributed I/O that is used as interface between the controller and the process.
Industrial Ethernet
Guideline for setting up Ethernet in an industrial environment. The main difference to the
standard Ethernet is the mechanical current carrying capacity and interference immunity of
the individual components.
Memory reset
Procedure to set the memories of the CPU to a defined initial state.
Operating states
Operating states describe the behavior of a single CPU at a specific time.
The CPUs of the SIMATIC standard systems feature the STOP, STARTUP and RUN
operating states.
The primary CPU of the S7-1500R/H features the STOP, STARTUP, RUN, RUN-Syncup
and RUN-Redundant operating states. The backup CPU features the STOP, SYNCUP and
RUN-Redundant operating states.
PLC
P
rogrammable
L
ogic
C
ontroller: Component of the CNC by which the machine manufacturer
coordinates the interaction between the NC requirements (part program), the inputs of the
machine operator and the current machine state.
Primary CPU
Role of a CPU in the S7-1500R/H redundant system. If the R/H system is in RUN-Redundant
system state, the primary CPU controls the process. The backup CPU processes the user
program synchronously and can take over the process control if the primary CPU fails.
PROFIBUS
Standard for fieldbus communication in automation technology.
Glossary
Diagnostics
124 Function Manual, 10/2018, A5E03735838-AE
PROFINET
PROcess FIeld NETwork, open industrial Ethernet standard which further develops
PROFIBUS and industrial Ethernet. A cross-manufacturer communication, automation, and
engineering model defined by PROFIBUS International e.V., as an automation standard.
Redundant systems
Redundant systems are identified by the fact that important automation components are
available in multiple units (redundant). Process control is maintained if a redundant
component fails.
Subnet
Part of a network whose parameters must be synchronized with the devices (e.g., with
PROFINET). It includes the bus components and all connected stations. Subnets can be
linked by means of gateways, for example, to form a network.
Synchronization module
The synchronization module is used to provide a redundant connection between the CPUs of
the S7-1500H redundant system. You require two synchronization modules per CPU, which
you connect using a fiber-optic cable.
System diagnostics
In the SIMATIC environment, the term "system diagnostics" refers to diagnostics of devices
and modules. System diagnostics is used, for example, to monitor the states of the following
components in the system: Power supply, device, I/O.
System diagnostics indicator (WinCC)
The system diagnostics indicator is a predefined graphic symbol of the library which alerts
you to errors in your plant and displays two states: No error, error
System states
The system states of the S7-1500R/H redundant system result from the operating states of
the primary and backup CPU. The term 'system state' is used as simple expression that
identifies the operating states of the two CPUs that occur at the same time. The S7-1500R/H
redundant system features the system states STOP, STARTUP, RUN-Solo, SYNCUP and
RUN-Redundant.
Glossary
Diagnostics
Function Manual, 10/2018, A5E03735838-AE 125
Topology
Structure of a network. Common structures include:
● Linear bus topology
● Ring topology
● Star topology
● Tree topology
User program
In SIMATIC, a distinction is made between user programs and the firmware of the CPU.
The user program contains all instructions, declarations and data by which a plant or process
can be controlled. It is assigned to a programmable module (for example, CPU, FM) and can
be structured in smaller units.
Firmware: see glossary entry "Firmware of the CPU"
Value status
The value status describes a specific signal state. The value status is constantly updated
and cyclically transmitted by the field device as quality statement together with the measured
value.
Web server
Software/ communication service for data exchange using Ethernet. The web server
provides the documents by means of standardized transmission protocols (HTTP, HTTPS) to
a web browser. Documents can be static or dynamic upon request by the web browser
composed from different sources by the web server.
WinCC
W
indows
C
ontrol
C
enter: a PC-based process visualization system
WinCC Runtime
Component of the basic software WinCC
Diagnostics
126 Function Manual, 10/2018, A5E03735838-AE
Index
"
"Diagnostics" tab
Alarm display, 42
Connection information, 42
Device information, 42
Inspector window, 42
A
Accessible devices
Diagnostics status, 34
Offline project, 34
S7-1500R/H, 102
Alarm display
Active alarms, 44
Archive view, 44
Alarms
Editing in the alarm editor, 82
Multilingual, 83
Application examples
Diagnostics in the user program with S7-1500, 75
System diagnostics with S7-1500 and TIA Portal, 75
B
Backup CPU, 105, 120
D
Device information
Online status, 42
Operating mode, 42
Devices & networks
Current state, 36
Go online, 36
Diagnostics buffer
Diagnostic events, 45
Retentive memory, 45
Display of the CPU
Display options, 30
Input options, 30
Status information, 30
dynamize
Object appearance, 71
F
FAQs
Download certificate, 54
Implementing channel diagnostics in the user
program, 75
H
HMI
System diagnostics view, 62
System diagnostics window, 62
HMI diagnostics view
Comfort Panels, 62
Details view, 66
Device view, 66
Distributed I/O view, 66
Views, 66
WinCC Advanced RT, 62
I
I/O module
Inputs, 50
Settings, 50
L
LED arrangement, 29
Library
System diagnostics indicator, 69
O
Online & diagnostics
Activities, 39
Information, 39
Online access, 39
Online mode, 39
S7-1500R/H, 103
Online tools
CPU operator panel, 48
Cycle time, 48
Memory, 48
Memory usage, 48
Index
Diagnostics
Function Manual, 10/2018, A5E03735838-AE 127
Online view, 48
S7-1500R/H, 106
Task card, 48
P
Primary CPU, 105, 120
Process image inputs, 76
Quality Information, 76
User datum, 76
Value status, 76
Q
Quick start, 17
Using display, 18
Using STEP 7, 20
R
Redundancy connection, 118
Redundant mode
Diagnostics, 114
Redundant system, 103
RUN-Redundant system state
Diagnostics, 114
RUN-Solo system state
Diagnostics, 120
S
S7-1500H, 116
S7-1500R/H
Diagnostics, 100
Instructions, 121
Security events, 48
Setting options, 25
Symbol
For comparison, 33
For hardware diagnostics, 32
For operating mode, 33
For software diagnostics, 33
Synchronization module, 116
System diagnostics
Advantages, 16
Alarm settings, 26
Button, 71
Display concept, 16
Properties, 14
System diagnostics indicator
Button as system diagnostics indicator, 71
Inserting, 69
System diagnostics window, 69
System diagnostics view, 62
Configuring, 63
System diagnostics indicator, 69
System diagnostics window, 62
Configuring, 63
Global screen, 63
U
User program
Instructions, 74
Response to diagnostics alarms, 74
W
Web server
Access to, 54
Activating, 52
Alarms, 57
Browser, 51
Certificate, 52
Configuring, 52
Diagnostics, 55
Diagnostics buffer, 56
HTTPS, 52
Integrated Web server, 51
Module information, 57
Motion Control diagnostics, 60
Topology, 59
Trace, 61
Web pages, 51