| Вид документа | Інструкція з експлуатації |
|---|---|
| Виробник | SIEMENS |
| Код документа | S7-1200-G2_Instruction_manual |
| Сторінок | 422 |
| Мова документа | англійська |
| Розмір файлу | 16.7 МБ |
Текст документа
Introduction
1
Product overview
2
SIMATIC Installation and wiring
3
S7-1200 G2 Programmable Logic PLC concepts, configuration,
and programming
4
Controller
Communication
5
System Manual
Near Field Communication
(NFC)
6
Web server
7
Motion control
8
PID
9
Online and diagnostic tools
10
Technical specifications
A
Ordering information
B
Safety-relevant symbols
C
Comparison to S7-1200
D
V1.0.1, 04/2025
A5E52923928-AB
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 Aktiengesellschaft. 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.
Siemens Aktiengesellschaft A5E52923928-AB Copyright © Siemens 2025.
Digital Industries Ⓟ 05/2025 Subject to change All rights reserved
Postfach 48 48
90026 NÜRNBERG
GERMANY
Table of contents
1 Introduction........................................................................................................................................ 11
1.1 General information.......................................................................................................... 11
1.2 Maintaining operational safety of your plant..................................................................... 13
1.3 S7-1200 G2 documentation guide..................................................................................... 14
1.4 SIMATIC Technical Documentation.................................................................................... 14
1.5 Tool Support..................................................................................................................... 16
1.6 Cybersecurity information................................................................................................. 17
2 Product overview................................................................................................................................ 18
2.1 Introducing the S7-1200 G2 PLC....................................................................................... 18
2.2 S7-1200 G2 modules and boards...................................................................................... 20
2.3 Features........................................................................................................................... 21
3 Installation and wiring........................................................................................................................ 23
3.1 Installation guidelines....................................................................................................... 23
3.2 Safety information............................................................................................................ 25
3.3 Mounting dimensions....................................................................................................... 27
3.4 Providing power for the CPU............................................................................................. 28
3.5 Expansion capability of the CPU........................................................................................ 31
3.6 Installation and removal procedures.................................................................................. 31
3.6.1 Installing and removing a CPU........................................................................................... 31
3.6.2 Installing and removing expansion modules...................................................................... 34
3.6.3 Installing and removing expansion boards......................................................................... 36
3.6.4 Removing and installing terminal block connectors........................................................... 38
3.7 Wiring guidelines and procedures..................................................................................... 41
3.7.1 Safety considerations........................................................................................................ 41
3.7.2 Guidelines for isolation..................................................................................................... 42
3.7.3 Guidelines for grounding.................................................................................................. 44
3.7.4 Guidelines for wiring......................................................................................................... 45
3.7.5 Wiring and unwiring terminal block connectors................................................................. 47
3.7.6 Guidelines for inductive loads........................................................................................... 51
3.7.7 Guidelines for lamp loads.................................................................................................. 53
3.8 Maintenance and repair.................................................................................................... 53
4 PLC concepts, configuration, and programming................................................................................ 54
4.1 TIA Portal.......................................................................................................................... 54
4.2 Different views in the TIA Portal........................................................................................ 54
4.3 Using the TIA Portal Information System............................................................................ 56
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Table of contents
4.4 Program structure............................................................................................................. 56
4.4.1 Structure of a STEP 7 user program................................................................................... 56
4.4.2 Execution of the user program.......................................................................................... 57
4.4.3 Startup configuration and processing................................................................................ 60
4.4.4 Processing the scan cycle in RUN mode............................................................................. 61
4.4.5 Organization blocks (OBs)................................................................................................. 62
4.4.5.1 Program cycle OB.............................................................................................................. 62
4.4.5.2 Startup OB........................................................................................................................ 63
4.4.5.3 Time delay interrupt OB.................................................................................................... 63
4.4.5.4 Cyclic interrupt OB............................................................................................................ 64
4.4.5.5 Hardware interrupt OB...................................................................................................... 65
4.4.5.6 Time error interrupt OB..................................................................................................... 66
4.4.5.7 Diagnostic error interrupt OB............................................................................................ 67
4.4.5.8 Pull or plug of modules OB................................................................................................ 69
4.4.5.9 Rack or station failure OB.................................................................................................. 70
4.4.5.10 Time of day OB................................................................................................................. 70
4.4.5.11 Synchronous cycle OB....................................................................................................... 71
4.4.5.12 Status OB.......................................................................................................................... 71
4.4.5.13 Update OB........................................................................................................................ 72
4.4.5.14 Profile OB......................................................................................................................... 72
4.4.5.15 MC-Servo and MC-Interpolator OB..................................................................................... 72
4.4.5.16 MC-PreInterpolator........................................................................................................... 73
4.4.5.17 MC-PreServo..................................................................................................................... 74
4.4.5.18 MC-PostServo................................................................................................................... 75
4.4.5.19 MC-LookAhead................................................................................................................. 75
4.4.5.20 Programming error OB...................................................................................................... 76
4.4.5.21 I/O access error OB............................................................................................................ 77
4.4.5.22 Event execution priorities and queuing.............................................................................. 78
4.4.6 Monitoring and configuring the cycle time........................................................................ 81
4.4.7 Cycle time and communication load.................................................................................. 82
4.4.8 CPU memory..................................................................................................................... 83
4.4.8.1 Memory management...................................................................................................... 83
4.4.8.2 Notes about retentive memory.......................................................................................... 84
4.4.8.3 System and clock memory................................................................................................. 85
4.4.9 Diagnostics buffer............................................................................................................. 86
4.4.10 Program alarms................................................................................................................ 88
4.4.11 Time of day clock.............................................................................................................. 88
4.4.12 Data storage, memory areas, I/O and addressing............................................................... 89
4.4.12.1 Accessing the data of the CPU........................................................................................... 89
4.4.12.2 Using absolute addressing to access CPU data................................................................... 91
4.4.12.3 Addressing the local and expansion I/O............................................................................. 94
4.4.13 Processing of analog values.............................................................................................. 95
4.4.14 Using a memory card........................................................................................................ 96
4.4.14.1 Memory cards................................................................................................................... 96
4.4.14.2 Inserting a memory card in the CPU................................................................................... 97
4.4.14.3 Empty memory card.......................................................................................................... 99
4.4.14.4 Configuring the startup parameter of the CPU before copying the project to the .... 99
memory card
4.4.14.5 Transfer card.................................................................................................................... 99
4.4.14.6 Program card.................................................................................................................... 102
4.4.14.7 Firmware update card....................................................................................................... 105
4.4.14.8 Memory card for protecting confidential PLC configuration data........................................ 107
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4.4.14.9 Recovery from a lost password.......................................................................................... 109
4.4.14.10 Memory card for copying license conditions and copyrights from the CPU.......................... 109
4.5 Managing users and roles................................................................................................. 110
4.6 Device configuration......................................................................................................... 110
4.6.1 Overview.......................................................................................................................... 110
4.6.2 Inserting a CPU................................................................................................................. 111
4.6.3 Uploading the configuration of a connected CPU............................................................... 114
4.6.4 Adding modules to the configuration................................................................................ 116
4.6.5 Configuring the operation of the CPU................................................................................ 117
4.6.5.1 Configuring the system power supply................................................................................ 120
4.6.6 Configuring the parameters of the modules...................................................................... 120
4.6.7 Configuring the CPU for communication........................................................................... 122
4.6.8 Time synchronization........................................................................................................ 124
4.7 Compatibility between STEP 7 versions and the S7-1200 G2 CPU....................................... 125
4.8 Instruction set .................................................................................................................. 126
4.8.1 Supported programming languages.................................................................................. 126
4.8.2 Instructions for programming the PLC............................................................................... 127
4.8.3 Basic instructions.............................................................................................................. 128
4.8.4 Extended instructions....................................................................................................... 129
4.8.5 Technology instructions.................................................................................................... 131
4.8.6 Communication instructions............................................................................................. 131
4.8.7 Optional instructions........................................................................................................ 132
5 Communication.................................................................................................................................. 133
5.1 Overview.......................................................................................................................... 133
5.2 Secure communication..................................................................................................... 134
5.3 Communication protocols and ports used by Ethernet communication.............................. 135
5.4 Asynchronous communication connections....................................................................... 137
5.5 Supported certificates....................................................................................................... 139
5.6 PROFINET......................................................................................................................... 139
5.6.1 CPU communication......................................................................................................... 139
5.6.2 Creating a network connection......................................................................................... 140
5.6.3 Configuring the Local/Partner connection path.................................................................. 141
5.6.4 Locating the Ethernet (MAC) address on the CPU............................................................... 142
5.6.5 Assigning Internet Protocol (IP) addresses......................................................................... 142
5.6.5.1 Assigning IP addresses to programming and network devices............................................ 142
5.6.5.2 Checking the IP address and MAC address of your network interface.................................. 144
5.6.5.3 Assigning an IP address to an online CPU........................................................................... 144
5.6.5.4 Configuring an IP address for a CPU in your project............................................................ 146
5.6.6 Testing the PROFINET network.......................................................................................... 151
5.6.7 PROFINET device startup time, naming, and address assignment....................................... 151
5.6.8 Configuring Network Time Protocol (NTP) synchronization................................................ 152
5.6.9 Open user communication................................................................................................ 153
5.6.9.1 Protocols.......................................................................................................................... 153
5.6.9.2 TCP, ISO on TCP, and UDP.................................................................................................. 153
5.6.9.2.1 TCP................................................................................................................................... 153
5.6.9.2.2 ISO on TCP........................................................................................................................ 154
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Table of contents
5.6.9.2.3 UDP.................................................................................................................................. 154
5.6.9.3 Ad hoc mode.................................................................................................................... 155
5.6.9.4 Instructions...................................................................................................................... 155
5.6.9.5 Connection IDs for the Open user communication instructions.......................................... 156
5.6.9.6 Parameters for the OUC connection.................................................................................. 156
5.6.9.7 Transport Layer Security (TLS)........................................................................................... 157
5.6.9.8 Configuring DNS............................................................................................................... 157
5.6.9.9 Configuring an OUC connection in the TIA Portal............................................................... 158
5.6.9.10 Common parameters for instructions................................................................................ 158
5.6.9.11 Restricted TSAPs or port numbers for passive ISO and TCP communication......................... 160
5.6.10 Communication with a programming device..................................................................... 160
5.6.10.1 Establishing the hardware communications connection..................................................... 160
5.6.10.2 Configuring the devices.................................................................................................... 162
5.6.10.3 Testing the PROFINET network.......................................................................................... 162
5.6.10.4 Assigning Internet Protocol (IP) addresses......................................................................... 163
5.6.11 PLC-to-PLC communication............................................................................................... 165
5.6.11.1 Configuring connection parameters.................................................................................. 166
5.6.11.2 Configuring transmit (send) and receive parameters.......................................................... 167
5.6.12 Configuring a CPU and PROFINET IO device....................................................................... 167
5.6.12.1 Adding a PROFINET IO device............................................................................................ 167
5.6.12.2 Assigning CPUs and device name...................................................................................... 168
5.6.12.3 Assigning Internet Protocol (IP) addresses......................................................................... 169
5.6.12.4 Configuring the IO cycle time............................................................................................ 169
5.6.13 Configuring a CPU and PROFINET I-device.......................................................................... 170
5.6.13.1 I-device functionality........................................................................................................ 170
5.6.13.2 Properties and advantages of the I-device.......................................................................... 170
5.6.13.3 Characteristics of an I-device............................................................................................. 171
5.6.13.4 Data exchange between higher- and lower-level IO system................................................ 173
5.6.13.5 Configuring the I-device.................................................................................................... 176
5.6.14 Shared device functionality............................................................................................... 178
5.6.15 Media Redundancy Protocol (MRP).................................................................................... 180
5.6.16 Media Redundancy with Planned Duplication of frames (MRPD)......................................... 180
5.6.17 Isochronous Real-Time PROFINET (IRT).............................................................................. 181
5.6.18 SNMP............................................................................................................................... 181
5.7 S7 communication............................................................................................................ 183
5.7.1 PUT and GET (Write and read from a remote CPU).............................................................. 183
5.7.2 Creating an S7 connection................................................................................................ 185
5.7.3 PUT/GET connection parameter assignment....................................................................... 185
5.7.3.1 Connection ID parameter.................................................................................................. 186
5.7.3.2 Connection name parameter............................................................................................. 187
5.8 Diagnostic events for distributed I/O.................................................................................. 187
5.9 What to do when you cannot access the CPU by the IP address.......................................... 188
5.10 Communication processor and Modbus............................................................................. 189
5.10.1 Overview.......................................................................................................................... 189
5.10.2 Using the serial communication interfaces........................................................................ 189
5.10.3 Biasing and terminating an RS422 or RS485 network connector........................................ 190
5.10.4 PtP, Freeport communication............................................................................................ 193
5.10.5 Configuring the PtP Freeport communication.................................................................... 194
5.10.5.1 Configuring the communication ports............................................................................... 194
5.10.5.2 Managing flow control...................................................................................................... 197
S7-1200 G2 Programmable Logic Controller
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Table of contents
5.10.5.3 Configuring transmit (send) and receive parameters.......................................................... 198
5.10.5.4 Configuring transmit (send) parameters............................................................................ 199
5.10.5.5 Configuring receive parameters........................................................................................ 201
5.10.6 3964(R) communication................................................................................................... 207
5.10.7 Configuring the 3964(R) communication.......................................................................... 208
5.10.7.1 Configuring the 3964(R) communication ports.................................................................. 208
5.10.7.2 Configuring the 3964(R) priority and protocol parameters................................................. 210
5.10.8 Point-to-Point Instructions................................................................................................. 212
5.10.9 Programming the PtP communications.............................................................................. 212
5.10.9.1 Programming overview..................................................................................................... 212
5.10.9.2 Polling architecture........................................................................................................... 213
5.10.10 Universal serial interface (USS) communication................................................................. 214
5.10.10.1 USS instructions................................................................................................................ 217
5.10.10.2 USS status codes............................................................................................................... 218
5.10.10.3 USS general drive setup requirements............................................................................... 219
5.10.11 Modbus communication................................................................................................... 219
5.10.11.1 Modbus TCP...................................................................................................................... 221
5.10.11.1.1 Modbus TCP instructions and versions............................................................................... 222
5.10.11.2 Modbus RTU..................................................................................................................... 223
5.10.11.2.1 Maximum number of supported Modbus slaves................................................................. 224
5.10.11.2.2 Modbus RTU instructions................................................................................................... 224
6 Near Field Communication (NFC)....................................................................................................... 225
6.1 Installing and setting up the NFC app................................................................................ 226
6.2 Enabling NFC and optional settings in STEP 7.................................................................... 226
6.3 Scanning a device with the S7‑1200 G2 NFC app............................................................... 227
6.4 Working with devices in the S7‑1200 G2 NFC app.............................................................. 228
6.6 Troubleshooting............................................................................................................... 230
7 Web server.......................................................................................................................................... 232
7.1 Certificate requirements for the Web server....................................................................... 233
8 Motion control.................................................................................................................................... 234
8.1 Introducing S7-1200 G2 Motion Control............................................................................ 234
8.2 Motion Control Technology Objects (TOs)......................................................................... 234
8.3 Motion Control instructions............................................................................................... 236
8.4 Motion Control Organization Blocks (OBs)......................................................................... 238
8.5 Differences between S7-1200 G2 and S7-1500/S7-1500T.................................................. 239
8.5.1 Adapting Motion Control to S7-1200 G2............................................................................ 239
8.6 Additional information...................................................................................................... 240
9 PID....................................................................................................................................................... 241
9.1 PID functionality............................................................................................................... 241
S7-1200 G2 Programmable Logic Controller
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Table of contents
10 Online and diagnostic tools................................................................................................................ 243
10.1 Status LEDs....................................................................................................................... 245
10.2 CPU error behavior............................................................................................................ 249
10.3 Analog module diagnostics............................................................................................... 250
10.4 Comparing offline and online CPUs................................................................................... 250
10.5 Monitoring and modifying values in the CPU..................................................................... 251
10.5.1 Overview of the online monitoring and modification tools................................................. 251
10.5.2 Watch tables for monitoring the user program.................................................................. 252
10.5.3 Using the force table......................................................................................................... 252
10.6 Downloading in RUN mode............................................................................................... 252
10.6.1 Overview.......................................................................................................................... 252
10.6.2 Prerequisites for "Download in RUN mode"........................................................................ 253
10.6.3 Changing your program in RUN mode............................................................................... 254
10.6.4 Downloading selected blocks............................................................................................ 255
10.6.5 Downloading a single selected block with a compile error in another block........................ 256
10.6.6 Modifying and downloading existing tags in RUN mode..................................................... 256
10.6.7 System reaction if the download process fails.................................................................... 259
10.6.8 Considerations when downloading in RUN mode .............................................................. 260
10.7 Tracing and recording CPU data on trigger conditions........................................................ 261
10.8 Determining the type of wire break condition from an SM 1231 module............................ 263
A Technical specifications...................................................................................................................... 266
A.1 General technical specifications........................................................................................ 266
A.2 Protection methods.......................................................................................................... 276
A.3 CPU 1212C....................................................................................................................... 277
A.3.1 General specifications and features................................................................................... 277
A.3.2 Performance..................................................................................................................... 279
A.3.3 Blocks, timers, and counters.............................................................................................. 279
A.3.4 Communications............................................................................................................... 280
A.3.5 Power supply and sensor power........................................................................................ 283
A.3.6 Digital inputs and outputs................................................................................................. 284
A.3.7 Wiring diagrams................................................................................................................ 286
A.4 CPU 1212FC...................................................................................................................... 288
A.4.1 General specifications and features................................................................................... 288
A.4.2 Performance..................................................................................................................... 291
A.4.3 Blocks, timers, and counters.............................................................................................. 291
A.4.4 Communications............................................................................................................... 292
A.4.5 Power supply and sensor power........................................................................................ 295
A.4.6 Digital inputs and outputs................................................................................................. 296
A.4.7 Wiring diagrams................................................................................................................ 298
A.5 CPU 1214C....................................................................................................................... 299
A.5.1 General specifications and features................................................................................... 299
A.5.2 Performance..................................................................................................................... 301
A.5.3 Blocks, timers, and counters.............................................................................................. 302
A.5.4 Communications............................................................................................................... 303
A.5.5 Power supply and sensor power........................................................................................ 306
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A.5.6 Digital inputs and outputs................................................................................................. 306
A.5.7 Wiring diagrams................................................................................................................ 309
A.6 CPU 1214FC...................................................................................................................... 311
A.6.1 General specifications and features................................................................................... 311
A.6.2 Performance..................................................................................................................... 314
A.6.3 Blocks, timers, and counters.............................................................................................. 314
A.6.4 Communications............................................................................................................... 315
A.6.5 Power supply and sensor power........................................................................................ 318
A.6.6 Digital inputs and outputs................................................................................................. 319
A.6.7 Wiring diagrams................................................................................................................ 321
A.7 Digital signal modules (SMs)............................................................................................. 322
A.7.1 SM 1221 DI 16x24VDC...................................................................................................... 322
A.7.2 SM 1222 DQ 16x24VDC.................................................................................................... 324
A.7.3 SM 1222 DQ 16xRelay...................................................................................................... 326
A.7.4 SM 1223 DI 8x24VDC / DQ 8x24VDC................................................................................. 328
A.7.5 SM 1223 DI 8x24VDC / DQ 8xRelay.................................................................................... 331
A.8 Analog signal modules (SMs)............................................................................................ 333
A.8.1 SM 1231 AI 8x14bit.......................................................................................................... 333
A.8.2 SM 1232 AQ 8x14bit......................................................................................................... 337
A.8.3 SM 1233 AI 4x14bit / AQ 4x14bit...................................................................................... 339
A.8.4 Step response of the analog inputs.................................................................................... 343
A.8.5 Sample time and update times for the analog inputs......................................................... 343
A.8.6 Measurement ranges of the analog inputs for voltage and current..................................... 343
A.8.7 Measurement ranges of the analog outputs for voltage and current.................................. 344
A.8.8 Basic operation of a thermocouple.................................................................................... 345
A.8.9 SM 1231 AI 8xTC ............................................................................................................. 346
A.8.10 SM 1231 AI 4xRTD............................................................................................................ 351
A.9 Digital signal boards (SBs)................................................................................................. 357
A.9.1 SB 1221 DI 8x24VDC......................................................................................................... 357
A.9.2 SB 1222 DQ 8x24VDC....................................................................................................... 358
A.9.3 SB 1223 DI 4x24VDC / DQ 4x24VDC.................................................................................. 361
A.9.4 SB 1223 DI 4x5VDC / DQ 4x5VDC...................................................................................... 363
A.10 Analog signal boards (SBs)................................................................................................ 366
A.10.1 SB 1231 AI 4x14bit........................................................................................................... 366
A.10.2 SB 1232 AQ 4x14bit.......................................................................................................... 368
A.10.3 SB 1233 AI 2x14bit / AQ 2x14bit....................................................................................... 370
A.10.4 Step response of the analog inputs.................................................................................... 374
A.10.5 Sample time and update times for the analog inputs......................................................... 374
A.10.6 Measurement ranges of the analog inputs for voltage and current..................................... 375
A.10.7 Measurement ranges of the analog outputs for voltage and current.................................. 376
A.10.8 Basic operation of a thermocouple.................................................................................... 377
A.10.9 SB 1231 AI 4xTC ............................................................................................................... 377
A.10.10 SB 1231 AI 2xRTD............................................................................................................. 382
A.11 Communication interfaces................................................................................................ 387
A.11.1 CM 1241 RS232/422/485.................................................................................................. 387
A.11.2 CB 1241 RS485 ................................................................................................................ 390
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Table of contents
A.12 Companion products......................................................................................................... 391
A.12.1 PM 1207 power module.................................................................................................... 391
B Ordering information......................................................................................................................... 393
B.1 CPUs................................................................................................................................. 393
B.2 Signal modules (SMs)....................................................................................................... 393
B.3 Signal boards (SBs)........................................................................................................... 394
B.4 Communication................................................................................................................ 394
B.5 Memory cards................................................................................................................... 394
B.6 Spare parts and other hardware........................................................................................ 395
B.7 Terminal block spare kits................................................................................................... 395
B.8 Programming software..................................................................................................... 398
C Safety-relevant symbols..................................................................................................................... 399
C.1 Devices without explosion protection................................................................................ 399
C.2 Devices with explosion protection..................................................................................... 400
D Comparison to S7-1200....................................................................................................................... 402
Glossary.............................................................................................................................................. 408
Index................................................................................................................................................... 410
S7-1200 G2 Programmable Logic Controller
10 System Manual, V1.0.1, 04/2025, A5E52923928-AB
Introduction 1
1.1 General information
Purpose of the documentation
The S7-1200 G2 programmable logic controllers (PLCs) can control a variety of automation
applications. Compact design, affordable price, and a powerful instruction set make the
S7-1200 G2 CPU and modules a perfect solution for controlling a wide variety of applications.
Together with the STEP 7 configuration and programming tool (Page 54), you have the
flexibility you need to design your automation solutions.
This documentation provides information about the S7-1200 G2 CPU and modules. It
contains information for engineers, programmers, installers, and electricians.
Required basic knowledge
To understand this documentation, you need a general knowledge of automation and
programmable logic controllers.
Validity of the documentation
This documentation applies to the S7-1200 G2 CPU family and G2 modules.
Refer to the technical specifications (Page 266) for each CPU and module in the S7‑1200 G2
family.
Conventions
STEP 7: In this documentation, "STEP 7" is used as a synonym for all versions of the
configuration and programming software "STEP 7 (TIA Portal)".
Also observe notes marked as follows:
NOTE
A note contains important information on the product described in the documentation, on
the handling of the product, or on the section of the documentation to which particular
attention should be paid.
S7-1200 G2 Programmable Logic Controller
System Manual, V1.0.1, 04/2025, A5E52923928-AB 11
Introduction
1.1 General information
ID link for the digital nameplate
The ID link is a globally unique identifier according to IEC 61406-1, which you will find as a
QR code on your product.
The figure shows an example of an ID link for the CPU 1212C AC/DC/RLY.
You can recognize the ID link by the frame with a black frame corner at the bottom right. The
ID link takes you to the digital nameplate of your product.
Scan the QR code on the product or on the packaging label with a smartphone camera,
barcode scanner, or reader app. Access the ID link.
In the digital nameplate, you can find product data, manuals, declarations of conformity,
certificates and other helpful information about your product.
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
(https://mall.industry.siemens.com).
Certifications and approvals
Refer to the technical specifications (Page 266) for details on certifications and approvals.
Glossary
The definitions in the glossary provide an easy first reference for understanding the terms in
this documentation.
S7-1200 G2 Programmable Logic Controller
12 System Manual, V1.0.1, 04/2025, A5E52923928-AB
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