Siemens SIMATIC ET 200SP User guide

Distributed I/O system

SIMATIC
ET 200SP
Distributed I/O system
System Manual
09/2019
A5E03576849
-AJ
Preface
ET 200SP Documentation
Guide
1
New properties/functions
2
System overview
3
Application planning
4
Installation
5
Wiring
6
Configuring
7
Basics of program execution
8
Protection
9
Configuration control (option
handling)
10
Commissioning
11
Maintenance
12
Test and service functions
13
Technical specifications
14
Dimension drawings
A
Accessories/spare parts
B
Calculating the leakage
resistance
C
Safety-relevant symbols
D

Siemens AG
Digital Industries
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A5E03576849-AJ
Ⓟ
09/2019 Subject to change
Copyright © Siemens AG 2012 - 2019.
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.

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System Manual, 09/2019, A5E03576849-AJ 3
Preface
Preface
Purpose of the documentation
This documentation provides important information on configuring, installing, wiring and
commissioning the ET 200SP distributed I/O system.
Basic knowledge required
A basic knowledge of automation technology is required to understand the documentation.
Validity of the documentation
This documentation applies to the distributed I/O system, ET 200SP.
Definition
In this document, " motor starter" always refers to all variants of the ET 200SP motor
starters.
Conventions
Please pay particular attention to notes highlighted as follows:
Note
Notes contain important information on the product, handling the product or on part of the
documentation to which you should pay particular attention.
Standards
You can find a dated reference to the respective standards or the EC Declaration of
Conformity on the Internet (https://support.industry.siemens.com)

Preface
Distributed I/O system
4System Manual, 09/2019, A5E03576849-AJ
Special information
WARNING
Hazardous Voltage
Can Cause Death, Serious Injury, or Property Damage.
Proper use of hardware products
This equipment is only allowed to be used for the applications described in the catalog and
in the technical description, and only in conjunction with non-Siemens equipment and
components recommended by Siemens.
Correct transport, storage, installation and assembly, as well as careful operation and
maintenance, are required to ensure that the product operates safely and without faults.
EU note: Start-up/commissioning is absolutely prohibited until it has been ensured that the
machine in which the component described here is to be installed fulfills the
regulations/specifications of Directive 2006/42/EC.
Note
Important note for maintaining operational safety of your plant
Plants with safety
-related features are subject to special operational safety requirements on
the
part of the operator. Even suppliers are required to observe special measures during
product monitoring. For this reason, we inform you in the form of personal notifications about
product developments and features that are (or could be) relevant to operati
on of systems
from a safety perspective.
By subscribing to the appropriate notifications, you will ensure that you are always up
-to-
date
and able to make cha
nges to your system, when necessary.
Log onto Industry Online Support. Go to the following links
and, on the side, right click on
"email on update":
•
SIMATIC S7-300/S7-300F (https://support.industry.siemens.com/cs/ww/en/ps/13751)
•
SIMATIC S7-400/S7-400H/S7-400F/FH
(https://support.industry.siemens.com/cs/ww/en/ps/13828)
•
SIMATIC WinAC RTX (F) (https://support.industry.siemens.com/cs/ww/en/ps/13915)
•
SIMATIC S7-1500/SIMATIC S7-1500F
(https://support.industry.siemens.com/cs/ww/en/ps/13716)
•
SIMATIC S7-1200/SIMATIC S7-1200F
(https://support.industry.siemens.com/cs/ww/en/ps/13683)
•
Distributed I/O (https://support.industry.siemens.com/cs/ww/en/ps/14029)
•
STEP 7 (TIA Portal) (https://support.industry.siemens.com/cs/ww/en/ps/14667)
Note
When using F
-CPUs in safety mode and fail-safe modules, observe the description of the
SIMATIC Industrial Software SIMATI
C Safety - Configuring and Programming
(
http://support.automation.siemens.com/WW/view/en/54110126) fail-safe system.

Preface
Distributed I/O system
System Manual, 09/2019, A5E03576849-AJ 5
Recycling and disposal
For ecologically sustainable recycling and disposal of your old device, contact a certified
disposal service for electronic scrap and dispose of the device in accordance with the
regulations in your country.
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 visit (https://www.siemens.com/industrialsecurity).

Preface
Distributed I/O system
6System Manual, 09/2019, A5E03576849-AJ
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,
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●Forums
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●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
(http://www.siemens.com/automation/service&support).
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).
You can find catalogs for all automation and drive products on the Internet.
See also
Industry Mall (https://mall.industry.siemens.com)

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Table of contents
Preface ...................................................................................................................................................... 3
1 ET 200SP Documentation Guide............................................................................................................. 12
2 New properties/functions ......................................................................................................................... 14
3 System overview...................................................................................................................................... 16
3.1 What is the SIMATIC ET 200SP distributed I/O system?.......................................................16
3.2 What are fail-safe automation systems and fail-safe modules? .............................................19
3.3 How are SIMATIC Safety F-systems structured with ET 200SP?..........................................20
3.4 Components............................................................................................................................24
4 Application planning................................................................................................................................. 33
4.1 Selecting the BaseUnit for I/O modules..................................................................................38
4.1.1 Digital, fail-safe, communication, technology or analog modules without temperature
measurement..........................................................................................................................38
4.1.2 Analog modules with temperature measurement...................................................................39
4.2 Selecting motor starters with a suitable BaseUnit ..................................................................40
4.2.1 Selecting a BaseUnit for motor starters..................................................................................40
4.2.2 Selecting the motor starter......................................................................................................42
4.2.3 Selecting accessories for motor starters.................................................................................43
4.3 Selecting potential distributor modules...................................................................................44
4.3.1 Selecting a PotDis-BaseUnit...................................................................................................44
4.3.2 Selecting a PotDis-TerminalBlock ..........................................................................................46
4.4 Hardware configuration...........................................................................................................47
4.5 Forming potential groups ........................................................................................................49
4.5.1 Basics .....................................................................................................................................49
4.5.2 Forming potential groups with BaseUnit type B1....................................................................54
4.5.3 Forming potential groups with fail-safe modules ....................................................................55
4.5.4 Forming potential groups with motor starters .........................................................................57
4.6 Configuration examples for potential groups ..........................................................................59
4.6.1 Configuration examples with BaseUnits .................................................................................59
4.6.2 Configuration examples with potential distributor modules ....................................................61
5 Installation ............................................................................................................................................... 63
5.1 Basics .....................................................................................................................................63
5.2 Installation conditions for motor starters.................................................................................67
5.3 Mounting the CPU/interface module.......................................................................................69
5.4 Installing the CM DP communication module.........................................................................71
5.5 Mounting BaseUnits for I/O modules......................................................................................73
5.6 Mounting and dismantling BaseUnits for motor starters.........................................................76

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8System Manual, 09/2019, A5E03576849-AJ
5.7 Installing potential distributor modules................................................................................... 78
5.8 Installing the server module................................................................................................... 79
5.9 Mounting further accessories for motor starters .................................................................... 80
5.9.1 Mounting the cover for the 500 V AC infeed bus................................................................... 80
5.9.2 Mounting the mechanical bracket for the BaseUnit ............................................................... 82
5.9.3 Mounting the BU cover .......................................................................................................... 85
6 Wiring ...................................................................................................................................................... 86
6.1 Rules and regulations for operation....................................................................................... 86
6.2 Additional rules and regulations for the operation of the ET 200SP with fail-safe
modules.................................................................................................................................. 88
6.2.1 Safety extra-low voltage (SELV, PELV) for failsafe modules and failsafe motor starters ..... 88
6.2.2 Requirements for sensors and actuators for fail-safe modules and fail-safe motor
starters ................................................................................................................................... 89
6.2.3 Crosstalk of digital input/output signals ................................................................................. 91
6.3 Additional rules and instructions for operation with motor starters........................................ 92
6.3.1 Protection against short circuit............................................................................................... 92
6.4 Operating the ET 200SP on grounded incoming supply ....................................................... 92
6.5 Electrical configuration of the ET 200SP ............................................................................... 96
6.6 Wiring rules ............................................................................................................................ 98
6.7 Wiring BaseUnits for I/O modules........................................................................................ 101
6.8 Connecting cable shields for I/O modules ........................................................................... 103
6.9 Wiring BaseUnits for motor starters..................................................................................... 105
6.10 Connecting the 3DI/LC module for the motor starter........................................................... 109
6.11 Connecting the supply voltage to the CPU/interface module .............................................. 111
6.12 Connecting interfaces for communication............................................................................ 113
6.12.1 Connecting PROFINET IO (port P3) to the CPU................................................................. 113
6.12.2 Connecting the PROFIBUS DP interface to the interface module/communications
module CM DP..................................................................................................................... 115
6.13 Inserting I/O modules / motor starters and BU covers......................................................... 116
6.14 Mounting/disassembly of motor starters .............................................................................. 118
6.14.1 Mounting the fan .................................................................................................................. 118
6.14.2 Mounting/disassembly of motor starters .............................................................................. 119
6.14.3 3DI/LC module ..................................................................................................................... 121
6.15 Labeling ET 200SP .............................................................................................................. 124
6.15.1 Factory markings.................................................................................................................. 124
6.15.2 Optional markings ................................................................................................................ 126
6.15.3 Applying color identification labels....................................................................................... 127
6.15.4 Applying labeling strips ........................................................................................................ 129
6.15.5 Applying reference identification labels ............................................................................... 130
7 Configuring ............................................................................................................................................ 131
7.1 Configuring ET 200SP ......................................................................................................... 131

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7.2 Configuring the CPU.............................................................................................................134
7.2.1 Reading out the configuration...............................................................................................134
7.2.2 Addressing............................................................................................................................137
7.2.3 Process images and process image partitions .....................................................................139
7.2.3.1 Process image - overview.....................................................................................................139
7.2.3.2 Automatically updating process image partitions .................................................................140
7.2.3.3 Update process image partitions in the user program..........................................................140
7.3 Configuring the interface module..........................................................................................142
8 Basics of program execution.................................................................................................................. 143
8.1 Events and OBs....................................................................................................................143
8.2 Asynchronous instructions....................................................................................................145
9 Protection .............................................................................................................................................. 155
9.1 Overview of the protective functions of the CPU..................................................................155
9.2 Configuring access protection for the CPU ..........................................................................156
9.3 Using the user program to set additional access protection.................................................159
9.4 Know-how protection ............................................................................................................160
9.5 Copy protection.....................................................................................................................164
10 Configuration control (option handling) .................................................................................................. 166
10.1 Configuring............................................................................................................................169
10.2 Creating the control data record ...........................................................................................171
10.2.1 Introduction ...........................................................................................................................171
10.2.2 Control data record for an ET 200SP CPU...........................................................................173
10.2.3 Control data record for an interface module .........................................................................175
10.2.4 Feedback data record for interface modules ........................................................................179
10.2.5 Data records and functions...................................................................................................181
10.3 Transferring control data record in the startup program of the CPU ....................................182
10.4 Behavior during operation.....................................................................................................186
10.5 Examples of configuration control.........................................................................................187
11 Commissioning ...................................................................................................................................... 192
11.1 Overview ...............................................................................................................................192
11.2 Commissioning the ET 200SP for PROFINET IO ................................................................194
11.2.1 ET 200SP CPU as an IO controller ......................................................................................194
11.2.2 ET 200SP CPU as an I-device .............................................................................................196
11.2.3 ET 200SP as an IO device ...................................................................................................198
11.3 Commissioning the ET 200SP on PROFIBUS DP ...............................................................199
11.3.1 ET 200SP as a DP master....................................................................................................199
11.3.2 ET 200SP as I-slave .............................................................................................................201
11.3.3 ET 200SP as a DP slave ......................................................................................................203
11.4 Startup of the ET 200SP with empty slots ............................................................................204
11.5 Removing/inserting a SIMATIC memory card on the CPU ..................................................205

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11.6 Operating modes of the CPU............................................................................................... 206
11.6.1 STARTUP mode .................................................................................................................. 206
11.6.2 STOP mode ......................................................................................................................... 209
11.6.3 RUN mode ........................................................................................................................... 210
11.6.4 Operating mode transitions.................................................................................................. 210
11.7 CPU memory reset .............................................................................................................. 213
11.7.1 Automatic memory reset...................................................................................................... 214
11.7.2 Manual memory reset .......................................................................................................... 214
11.8 Reassigning parameters during operation........................................................................... 216
11.9 Backing up and restoring the CPU configuration................................................................. 217
11.9.1 Overview .............................................................................................................................. 217
11.10 Time synchronization ........................................................................................................... 220
11.10.1 Example: Configuring and changing NTP server................................................................. 222
11.11 Identification and maintenance data .................................................................................... 226
11.11.1 Reading out and entering I&M data ..................................................................................... 226
11.11.2 Data record structure for I&M data....................................................................................... 228
11.11.3 Example: Read out firmware version of the CPU with Get_IM_Data................................... 230
11.12 Shared commissioning of projects....................................................................................... 232
12 Maintenance .......................................................................................................................................... 233
12.1 Removing and inserting I/O modules/motor starters (hot swapping)................................... 233
12.2 Changing the type of an I/O module .................................................................................... 237
12.3 Replacing an I/O module ..................................................................................................... 238
12.4 Replacing a motor starter..................................................................................................... 239
12.5 Replacing the terminal box on the BaseUnit........................................................................ 240
12.6 Firmware update .................................................................................................................. 242
12.7 Resetting CPU/interface module (PROFINET) to factory settings ...................................... 249
12.7.1 Resetting the CPU to factory settings.................................................................................. 249
12.7.2 Resetting interface module (PROFINET IO) to factory settings .......................................... 252
12.7.3 Resetting the interface module (PROFINET IO) to factory settings with a RESET
button ................................................................................................................................... 253
12.8 Reaction to faults in fail-safe modules and fail-safe motor starters..................................... 255
12.9 Maintenance and repair ....................................................................................................... 257
12.10 Warranty............................................................................................................................... 257
13 Test and service functions ..................................................................................................................... 258
13.1 Test functions....................................................................................................................... 258
13.2 Reading out/saving service data.......................................................................................... 264
14 Technical specifications......................................................................................................................... 267
14.1 Standards, approvals and safety notes ............................................................................... 267
14.2 Electromagnetic compatibility .............................................................................................. 274
14.3 Electromagnetic compatibility of fail-safe modules.............................................................. 278

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14.4 Shipping and storage conditions...........................................................................................281
14.5 Mechanical and climatic environmental conditions...............................................................282
14.6 Insulation, protection class, degree of protection and rated voltage ....................................286
14.7 Use of the ET 200SP in zone 2 potentially explosive atmospheres.....................................288
A Dimension drawings .............................................................................................................................. 289
A.1 Shield connector ...................................................................................................................289
A.2 Labeling strip.........................................................................................................................289
A.3 Reference identification labels..............................................................................................290
B Accessories/spare parts ........................................................................................................................ 291
B.1 Lightning protection and overvoltage protection for fail-safe modules .................................294
C Calculating the leakage resistance ........................................................................................................ 295
D Safety-relevant symbols ........................................................................................................................ 297
D.1 Safety-related symbols for devices without Ex protection ....................................................297
D.2 Safety-related symbols for devices with Ex protection .........................................................298
Glossary ................................................................................................................................................ 300
Index...................................................................................................................................................... 301

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12 System Manual, 09/2019, A5E03576849-AJ
ET 200SP Documentation Guide
1
The documentation for the SIMATIC ET 200SP distributed I/O system is arranged into three
areas.
This arrangement enables you to access the specific content you require.
Basic information
The System Manual and Getting Started describe in detail the configuration, installation,
wiring and commissioning of the SIMATIC ET 200SP distributed I/O system. The STEP 7
online help supports you in the configuration and programming.
Device information
Product manuals contain a compact description of the module-specific information, such as
properties, wiring diagrams, characteristics and technical specifications.
General information
The function manuals contain detailed descriptions on general topics regarding the SIMATIC
ET 200SP distributed I/O system, e.g. diagnostics, communication, Web server, motion
control and OPC UA.
You can download the documentation free of charge from the Internet
(https://support.industry.siemens.com/cs/ww/en/view/109742709).
Changes and supplements to the manuals are documented in a Product Information.
You can download the product information free of charge from the Internet
(https://support.industry.siemens.com/cs/us/en/view/73021864).

ET 200SP Documentation Guide
Distributed I/O system
System Manual, 09/2019, A5E03576849-AJ 13
Manual Collection ET 200SP
The Manual Collection contains the complete documentation on the SIMATIC ET 200SP
distributed I/O system gathered together in one file.
You can find the Manual Collection on the Internet
(https://support.automation.siemens.com/WW/view/en/84133942).
"mySupport"
With "mySupport", your personal workspace, you make the most of your Industry Online
Support.
In "mySupport" you can store filters, favorites and tags, request CAx data and put together
your personal library in the Documentation area. Furthermore, your data is automatically
filled into support requests and you always have an overview of your current requests.
You need to register once to use the full functionality of "mySupport".
You can find "mySupport" in the Internet (https://support.industry.siemens.com/My/ww/en).
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 in individual products.
You can find the application examples on the Internet
(https://support.industry.siemens.com/sc/ww/en/sc/2054).

Distributed I/O system
14 System Manual, 09/2019, A5E03576849-AJ
New properties/functions
2
What's new in the ET 200SP System Manual, Edition 09/2019 compared to Edition 02/2018
What's new?
What are the customer benefits?
Where can I find information?
New con-
tents
BaseUnits BU30-MS7,
BU30-MS8, BU30-MS9 and
BU30-MS10 for fail-safe
motor starters
A simple, wire-saving group shutdown for fail-
safe motor starters.
In contrast to the earlier solution (BU30-MS5
and BU30-MS6), the fail-safe signal only has
to be wired to the first motor starter. The fail-
safe signal is internally routed via the Ba-
seUnits.
Section Selecting motor start-
ers with a suitable BaseUnit
(Page 40)
Section Forming potential
groups (Page 49)
Section Wiring BaseUnits for
motor starters (Page 105)
What's new in the system manual ET 200SP, edition 02/2018 compared to edition 12/2016
What's new?
What are the customer benefits?
Where can I find information?
New con-
tents
Potential distributor modules Potential distributor modules are a space-
saving replacement for standard potential
distributors or potential distributor terminals.
You can set up potential groups much faster,
in a more compact design and with fewer
components than with standard potential
distributor systems.
One application is, for example, the design of
digital input modules with 16 channels and 3-
wire connection. By using the potential dis-
tributor modules, you are reserving the un-
used signal lines of antivalent sensors.
Another application is the supply of potentials
for external components.
Starting from section System
overview (Page 16)
Password provider As an alternative to manual password input
you can connect a password provider to
STEP 7. A password provider offers the fol-
lowing advantages:
•Convenient handling of passwords.
STEP 7 reads the password automatically
for the blocks. This saves you time.
•Optimal block protection because the
operators do not know the actual pass-
word.
Section Know-how protection
(Page 160)

New properties/functions
Distributed I/O system
System Manual, 09/2019, A5E03576849-AJ 15
What's new?
What are the customer benefits?
Where can I find information?
GetSMCinfo instruction With the help of the GetSMCinfo instruction
you can respond to information provided by
the memory card in the user program and if
required, replace the memory card as a pre-
cautionary measure. This makes sense in
particular if you write to the card often in your
application, for example if you use data logs.
Section AUTOHOTSPOT
Testing with breakpoints When testing with breakpoints, you execute a
program from one breakpoint to another.
Testing with breakpoints provides you with
the following advantages:
•Testing SCL and STL program code with
the help of breakpoints
•Localization of logic errors step by step
•Simple and quick analysis of complex
programs prior to actual commissioning
•Recording of current values within individ-
ual executed loops
•Use of breakpoints for program validation
also possible in SCL/STL networks within
LAD/FBD blocks
Section Test functions
(Page 258)
Changed
contents
Reading out the identification
and maintenance data using
the Get_IM_Data instruction
With the Get_IM_Data instruction you can
read out the identification and maintenance
data of the modules without much program-
ming work.
With the Get_IM_Data instruction, you can
access the identification and maintenance
data (I&M) of a module in the user program.
I&M data is information saved in a module.
This allows you to
•check the system configurations
•react to hardware changes
•react to hardware faults in the user pro-
gram.
Finding and elimination of hardware errors is
made easier.
Section Reading out and enter-
ing I&M data (Page 226)
Time synchronization For all applications that need the exact time,
you update the CPU time using the NTP
process. This also automatically sets the
CPU time beyond subnet limits.
Section Time synchronization
(Page 220)
Firmware update via acces-
sible devices
You are given information on fast firmware
updates via accessible devices in the net-
work.
Section Firmware update
(Page 242)

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16 System Manual, 09/2019, A5E03576849-AJ
System overview
3
3.1 What is the SIMATIC ET 200SP distributed I/O system?
SIMATIC ET 200SP
SIMATIC ET 200SP is a scalable and highly flexible distributed I/O system for connecting
process signals to a higher-level controller via a fieldbus.
Customer benefits of the system
Figure 3-1 SIMATIC ET 200SP distributed I/O system - Customer benefits

System overview
3.1 What is the SIMATIC ET 200SP distributed I/O system?
Distributed I/O system
System Manual, 09/2019, A5E03576849-AJ 17
Area of application
Thanks to its multifunctionality, the SIMATIC ET 200SP distributed I/O system is suitable for
a wide range of applications. Its scalable design allows you to tailor your configuration to
local requirements. Different CPUs/interface modules are available for connection to
PROFINET IO or PROFIBUS DP.
SIMATIC ET 200SP with CPU allows intelligent pre-processing to relieve the higher-level
controller. The CPU can also be used as standalone device.
By using fail-safe CPUs, you can implement applications for safety engineering.
Configuration and programming of your safety program takes place the same way as for
standard CPUs.
A wide range of I/O modules rounds off the product range.
SIMATIC ET 200SP is designed with degree of protection IP20 and is intended for
installation in a control cabinet.
Configuration
The SIMATIC ET 200SP distributed I/O system is installed on a mounting rail. It consists of:
●CPU/interface module
●Up to 64 I/O modules, which can be plugged into BaseUnits in any combination
●Up to 31 motor starters
●A server module that completes the configuration of the ET 200SP.

System overview
3.1 What is the SIMATIC ET 200SP distributed I/O system?
Distributed I/O system
18 System Manual, 09/2019, A5E03576849-AJ
Configuration example
①
CPU/interface module
②
Light-colored BaseUnit BU..D with infeed of supply voltage
③
Dark-colored BaseUnits BU..B for extending the potential group
④
BaseUnit for motor starter
⑤
Server module (included in the scope of delivery of the CPU/interface module)
⑥
ET 200SP motor starter
⑦
I/O module
⑧
BusAdapter
⑨
Mounting rail
⑩
Reference identification label
Figure 3-2 Configuration example of the ET 200SP

System overview
3.2 What are fail-safe automation systems and fail-safe modules?
Distributed I/O system
System Manual, 09/2019, A5E03576849-AJ 19
3.2 What are fail-safe automation systems and fail-safe modules?
Fail-safe automation systems
Fail-safe automation systems (F-systems) are used in systems with higher safety
requirements. F-systems control processes and ensure that they are in a safe state
immediately after shutdown. In other words, F-systems control processes in which an
immediate shutdown does not endanger persons or the environment.
Safety Integrated
Safety Integrated is the integrated safety concept for automation and drive technology from
Siemens.
Proven technologies and systems from automation technology are used for safety systems.
Safety Integrated includes the complete safety sequence, ranging from sensor, actuator and
fail-safe modules right through to the controller, including safety-related communication via
standard fieldbuses. Drives and controllers handle safety tasks in addition to their actual
functions.
Fail-safe modules
The key difference between fail-safe modules (F-modules) and standard modules is that they
have an internal two-channel design. This means the two integrated processors monitor
each other, automatically test the input and output circuits, and switch the fail-safe module to
a safe state in the event of a fault.
The F-CPU communicates with a fail-safe module via the safety-related PROFIsafe bus
profile.
Fail-safe motor starters
Fail-safe motor starters enable safety-related tripping of motor loads. Fail-safe motor starters
are not PROFIsafe nodes. Motor starters operate together with the fail-safe modules of the
ET 200SP system.
Area of application of ET 200SP with fail-safe I/O modules
By using the ET 200SP distributed I/O system with fail-safe I/O modules, you are replacing
conventional safety engineering configurations. This includes the replacement of switching
devices for emergency STOP, protective door monitors, two-hand operation, etc.