Siemens SIMATIC S7 User guide

S7- 
1200 Programmable controller
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SIMATIC
S7
S7-1200 Programmable controller
System Manual
11/2011
A5E02486680-05
Preface
Product overview
1
STEP 7 programming
software
2
Installation
3
PLC concepts
4
Device configuration
5
Programming concepts
6
Basic instructions
7
Extended instructions
8
Technology instructions
9
Communication
10
Web server
11
Communication processor
12
Teleservice communication
(SMTP e-mail)
13
Online and diagnostic tools
14
Technical specifications
A
Calculating a power budget
B
Order numbers
C

Legal information
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
with a safety alert symbol, indicates that minor personal injury can result if proper precautions are not taken.
CAUTION
without a safety alert symbol, indicates that property damage can result if proper precautions are not taken.
NOTICE
indicates that an unintended result or situation can occur if the relevant information is not taken into account.
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.
Siemens AG
Industry Sector
Postfach 48 48
90026 NÜRNBERG
GERMANY
Order number: 6ES7298-8FA30-8BH0
Ⓟ 11/2011
Copyright © Siemens AG 2011.
Technical data subject to change

S7-1200 Programmable controller
System Manual, 11/2011, A5E02486680-05 3
Preface
Purpose of the manual
The S7-1200 series is a line of programmable logic controllers (PLCs) that can control a
variety of automation applications. Compact design, low cost, and a powerful instruction set
make the S7-1200 a perfect solution for controlling a wide variety of applications. The S7-
1200 models and the Windows-based programming tool give you the flexibility you need to
solve your automation problems.
This manual provides information about installing and programming the S7-1200 PLCs and
is designed for engineers, programmers, installers, and electricians who have a general
knowledge of programmable logic controllers.
Required basic knowledge
To understand this manual, it is necessary to have a general knowledge of automation and
programmable logic controllers.
Scope of the manual
This manual describes the following products:
● STEP 7 V11 Basic and Professional
● S7-1200 CPU firmware release V2.2
For a complete list of the S7-1200 products described in this manual, refer to the technical
specifications (Page 657).
Certification, CE label, C-Tick, and other standards
Refer to the technical specifications (Page 657) for more information.
Service and support
In addition to our documentation, we offer our technical expertise on the Internet on the
customer support web site (http://www.siemens.com/automation/support-request).
Contact your Siemens distributor or sales office for assistance in answering any technical
questions, for training, or for ordering S7 products. Because your sales representatives are
technically trained and have the most specific knowledge about your operations, process
and industry, as well as about the individual Siemens products that you are using, they can
provide the fastest and most efficient answers to any problems you might encounter.

Preface
S7-1200 Programmable controller
4 System Manual, 11/2011, A5E02486680-05
Documentation and information
S7-1200 and STEP 7 provide a variety of documentation and other resources for finding the
technical information that you require.
● The S7-1200 system manual provides specific information about the operation,
programming and the specifications for the complete S7-1200 product family. In addition
to the system manual, the S7-1200 Easy Book provides a more general overview to the
capabilities of the S7-1200 family.
Both the system manual and the Easy Book are available as electronic (PDF) and printed
manuals. The electronic manuals can be downloaded from the customer support web site
and can also be found on the companion disk that ships with every S7-1200 CPU.
● The online information system of STEP 7 provides immediate access to the conceptual
information and specific instructions that describe the operation and functionality of the
programming package and basic operation of SIMATIC CPUs.
● My Documentation Manager accesses the electronic (PDF) versions of the SIMATIC
documentation set, including the system manual, the Easy Book and the information
system of STEP 7. With My Documentation Manager, you can drag and drop topics from
various documents to create your own custom manual.
The customer support entry portal (http://support.automation.siemens.com) provides a
link to My Documentation Manager under mySupport.
● The customer support web site also provides podcasts, FAQs, and other helpful
documents for S7-1200 and STEP 7. The podcasts utilize short educational video
presentations that focus on specific features or scenarios in order to demonstrate the
interactions, convenience and efficiency provided by STEP 7. Visit the following web sites
to access the collection of podcasts:
– STEP 7 Basic web page (http://www.automation.siemens.com/mcms/simatic-
controller-software/en/step7/step7-basic/Pages/Default.aspx)
– STEP 7 Professional web page (http://www.automation.siemens.com/mcms/simatic-
controller-software/en/step7/step7-professional/Pages/Default.aspx)
● You can also follow or join product discussions on the Service & Support technical forum
(https://www.automation.siemens.com/WW/forum/guests/Conferences.aspx?Language=e
n&siteid=csius&treeLang=en&groupid=4000002&extranet=standard&viewreg=WW&nodei
d0=34612486). These forums allow you to interact with various product experts.
– Forum for S7-1200
(https://www.automation.siemens.com/WW/forum/guests/Conference.aspx?SortField=
LastPostDate&SortOrder=Descending&ForumID=258&Language=en&onlyInternet=Fa
lse)
– Forum for STEP 7 Basic
(https://www.automation.siemens.com/WW/forum/guests/Conference.aspx?SortField=
LastPostDate&SortOrder=Descending&ForumID=265&Language=en&onlyInternet=Fa
lse)

S7-1200 Programmable controller
System Manual, 11/2011, A5E02486680-05 5
Table of contents
Preface ...................................................................................................................................................... 3
1 Product overview ..................................................................................................................................... 17
1.1 Introducing the S7-1200 PLC.......................................................................................................17
1.2 Expansion capability of the CPU..................................................................................................20
1.3 S7-1200 modules.........................................................................................................................22
1.4 New features for S7-1200 and STEP 7 V11................................................................................23
1.5 Basic HMI panels .........................................................................................................................25
2 STEP 7 programming software................................................................................................................ 27
2.1 System requirements ...................................................................................................................27
2.2 Different views to make the work easier ......................................................................................28
2.3 Easy-to-use tools .........................................................................................................................29
2.3.1 Inserting instructions into your user program...............................................................................29
2.3.2 Accessing instructions from the "Favorites" toolbar.....................................................................29
2.3.3 Creating a complex equation with a simple instruction................................................................30
2.3.4 Adding inputs or outputs to a LAD or FBD instruction .................................................................31
2.3.5 Expandable instructions...............................................................................................................32
2.3.6 Selecting a version for an instruction...........................................................................................32
2.3.7 Modifying the appearance and configuration of STEP 7 .............................................................33
2.3.8 Dragging and dropping between editors......................................................................................33
2.3.9 Changing the operating mode of the CPU...................................................................................34
2.3.10 Capturing and restoring a block state ..........................................................................................34
2.3.11 Changing the call type for a DB ...................................................................................................36
2.3.12 Temporarily disconnecting devices from a network.....................................................................37
2.3.13 Virtual unplugging of devices from the configuration...................................................................38
3 Installation ............................................................................................................................................... 39
3.1 Guidelines for installing S7-1200 devices....................................................................................39
3.2 Power budget...............................................................................................................................40
3.3 Installation and removal procedures............................................................................................42
3.3.1 Mounting dimensions for the S7-1200 devices............................................................................42
3.3.2 Installing and removing the CPU .................................................................................................44
3.3.3 Installing and removing an SB or a CB........................................................................................46
3.3.4 Installing and removing an SM.....................................................................................................47
3.3.5 Installing and removing a CM or CP ............................................................................................48
3.3.6 Removing and reinstalling the S7-1200 terminal block connector...............................................50
3.3.7 Installing and removing the expansion cable...............................................................................51
3.3.8 TS (teleservice) adapter...............................................................................................................52
3.3.8.1 Connecting the TeleService Adapter ...........................................................................................52
3.3.8.2 Installing the SIM card .................................................................................................................53
3.3.8.3 Installing the TS adapter unit .......................................................................................................54

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3.3.8.4 Installing the TS adapter on a wall.............................................................................................. 56
3.4 Wiring guidelines......................................................................................................................... 56
4 PLC concepts .......................................................................................................................................... 61
4.1 Execution of the user program.................................................................................................... 61
4.1.1 Operating modes of the CPU...................................................................................................... 63
4.1.2 Processing the scan cycle in RUN mode....................................................................................66
4.1.3 Organization blocks (OBs) .......................................................................................................... 66
4.1.4 Event execution priorities and queuing ....................................................................................... 68
4.1.5 Monitoring the cycle time ............................................................................................................ 73
4.1.6 CPU memory............................................................................................................................... 75
4.1.6.1 System and clock memory.......................................................................................................... 78
4.1.6.2 Configuring the outputs on a RUN-to-STOP transition ............................................................... 80
4.2 Data storage, memory areas, I/O and addressing...................................................................... 80
4.2.1 Accessing the data of the S7-1200 ............................................................................................. 80
4.3 Processing of analog values ....................................................................................................... 85
4.4 Data types ................................................................................................................................... 86
4.4.1 Bool, Byte, Word, and DWord data types ...................................................................................87
4.4.2 Integer data types ....................................................................................................................... 88
4.4.3 Floating-point real data types...................................................................................................... 88
4.4.4 Time and Date data types........................................................................................................... 89
4.4.5 Data structure data type.............................................................................................................. 92
4.4.6 PLC data type ............................................................................................................................. 93
4.4.7 Pointer data types ....................................................................................................................... 93
4.4.7.1 "Pointer" pointer data type .......................................................................................................... 94
4.4.7.2 "Any" pointer data type................................................................................................................ 95
4.4.7.3 "Variant" pointer data type .......................................................................................................... 96
4.4.8 Accessing a "slice" of a tagged data type................................................................................... 96
4.4.9 Accessing a tag with an AT overlay ............................................................................................ 98
4.5 Using a memory card.................................................................................................................. 99
4.5.1 Inserting a memory card in the CPU......................................................................................... 100
4.5.2 Configuring the startup parameter of the CPU before copying the project to the memory
card ........................................................................................................................................... 102
4.5.3 Transfer card............................................................................................................................. 102
4.5.4 Program card ............................................................................................................................ 104
4.6 Recovery from a lost password................................................................................................. 107
5 Device configuration .............................................................................................................................. 109
5.1 Inserting a CPU......................................................................................................................... 110
5.2 Detecting the configuration for an unspecified CPU ................................................................. 111
5.3 Adding modules to the configuration......................................................................................... 112
5.4 Configuring the operation of the CPU.......................................................................................114
5.5 Configuring the parameters of the modules.............................................................................. 115
5.6 Configuring the CPU for communication................................................................................... 117
5.6.1 Creating a network connection ................................................................................................. 117
5.6.2 Configuring the Local/Partner connection path......................................................................... 118
5.6.3 Parameters for the PROFINET connection............................................................................... 120

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System Manual, 11/2011, A5E02486680-05 7
5.6.4 Assigning Internet Protocol (IP) addresses ...............................................................................123
5.6.4.1 Assigning IP addresses to programming and network devices.................................................123
5.6.4.2 Checking the IP address of your programming device..............................................................125
5.6.4.3 Assigning an IP address to a CPU online..................................................................................125
5.6.4.4 Configuring an IP address for a CPU in your project.................................................................127
5.6.5 Testing the PROFINET network ................................................................................................129
5.6.6 Locating the Ethernet (MAC) address on the CPU....................................................................130
5.6.7 Configuring Network Time Protocol synchronization.................................................................131
5.6.8 PROFINET device start-up time, naming, and address assignment.........................................132
6 Programming concepts.......................................................................................................................... 135
6.1 Guidelines for designing a PLC system.....................................................................................135
6.2 Structuring your user program ...................................................................................................136
6.3 Using blocks to structure your program .....................................................................................138
6.3.1 Organization block (OB).............................................................................................................138
6.3.2 Function (FC) .............................................................................................................................140
6.3.3 Function block (FB)....................................................................................................................140
6.3.4 Data block (DB)..........................................................................................................................141
6.4 Understanding data consistency................................................................................................143
6.5 Programming language..............................................................................................................144
6.5.1 Ladder logic (LAD) .....................................................................................................................144
6.5.2 Function Block Diagram (FBD) ..................................................................................................145
6.5.3 SCL ............................................................................................................................................145
6.5.4 EN and ENO for LAD, FBD and SCL.........................................................................................152
6.6 Protection...................................................................................................................................153
6.6.1 Access protection for the CPU...................................................................................................153
6.6.2 Know-how protection .................................................................................................................154
6.6.3 Copy protection..........................................................................................................................156
6.7 Downloading the elements of your program..............................................................................157
6.8 Uploading from the CPU............................................................................................................157
6.8.1 Copying elements of the project ................................................................................................157
6.8.2 Using the compare function .......................................................................................................158
6.9 Debugging and testing the program ..........................................................................................159
6.9.1 Monitor and modify data in the CPU..........................................................................................159
6.9.2 Watch tables and force tables....................................................................................................159
6.9.3 Cross reference to show usage .................................................................................................160
6.9.4 Call structure to examine the calling hierarchy..........................................................................161
7 Basic instructions................................................................................................................................... 163
7.1 Bit logic.......................................................................................................................................163
7.1.1 Bit logic contacts and coils.........................................................................................................163
7.1.2 Set and reset instructions ..........................................................................................................166
7.1.3 Positive and negative edge instructions ....................................................................................168
7.2 Timers ........................................................................................................................................170
7.3 Counters.....................................................................................................................................178
7.4 Compare ....................................................................................................................................183
7.4.1 Compare ....................................................................................................................................183

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7.4.2 In-range and Out-of-range instructions..................................................................................... 184
7.4.3 OK and Not OK instructions...................................................................................................... 185
7.5 Math .......................................................................................................................................... 186
7.5.1 Calculate instruction.................................................................................................................. 186
7.5.2 Add, subtract, multiply and divide instructions..........................................................................187
7.5.3 Modulo instruction ..................................................................................................................... 188
7.5.4 Negation instruction .................................................................................................................. 189
7.5.5 Increment and decrement instructions...................................................................................... 189
7.5.6 Absolute value instruction ......................................................................................................... 190
7.5.7 Minimum and Maximum instructions.........................................................................................191
7.5.8 Limit instruction ......................................................................................................................... 192
7.5.9 Floating-point math instructions ................................................................................................ 192
7.6 Move.......................................................................................................................................... 194
7.6.1 Move and block move instructions............................................................................................ 194
7.6.2 FieldRead and FieldWrite instructions ...................................................................................... 197
7.6.3 Fill instructions .......................................................................................................................... 199
7.6.4 Swap instruction........................................................................................................................ 200
7.7 Convert...................................................................................................................................... 201
7.7.1 CONV instruction ...................................................................................................................... 201
7.7.2 Conversion instructions for SCL ............................................................................................... 202
7.7.3 Round and truncate instructions ............................................................................................... 204
7.7.4 Ceiling and floor instructions..................................................................................................... 205
7.7.5 Scale and normalize instructions .............................................................................................. 206
7.8 Program control......................................................................................................................... 209
7.8.1 Overview of SCL program control statements .......................................................................... 209
7.8.2 IF-THEN statement ................................................................................................................... 210
7.8.3 CASE statement........................................................................................................................ 211
7.8.4 FOR statement.......................................................................................................................... 212
7.8.5 WHILE-DO statement ............................................................................................................... 213
7.8.6 REPEAT-UNTIL statement ....................................................................................................... 214
7.8.7 CONTINUE statement............................................................................................................... 214
7.8.8 EXIT statement ......................................................................................................................... 215
7.8.9 GOTO statement....................................................................................................................... 216
7.8.10 RETURN statement .................................................................................................................. 216
7.8.11 Jump and label instructions....................................................................................................... 217
7.8.12 JMP_LIST instruction ................................................................................................................ 217
7.8.13 SWITCH instruction................................................................................................................... 218
7.8.14 RET execution control instruction ............................................................................................. 220
7.8.15 Re-trigger scan cycle watchdog instruction ..............................................................................221
7.8.16 Stop scan cycle instruction........................................................................................................ 222
7.8.17 Get Error instructions ................................................................................................................ 222
7.9 Word logic operations ............................................................................................................... 226
7.9.1 AND, OR, and XOR instructions ............................................................................................... 226
7.9.2 Invert instruction........................................................................................................................ 227
7.9.3 Encode and decode instructions............................................................................................... 227
7.9.4 Select, Multiplex, and Demultiplex instructions......................................................................... 228
7.10 Shift and Rotate ........................................................................................................................ 231
7.10.1 Shift instructions........................................................................................................................ 231
7.10.2 Rotate instructions .................................................................................................................... 232

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8 Extended instructions ............................................................................................................................ 233
8.1 Date and time-of-day .................................................................................................................233
8.1.1 Date and time instructions .........................................................................................................233
8.1.2 Set and read system clock.........................................................................................................235
8.1.3 Run-time meter instruction.........................................................................................................237
8.1.4 SET_TIMEZONE instruction ......................................................................................................238
8.2 String and character...................................................................................................................240
8.2.1 String data overview ..................................................................................................................240
8.2.2 S_MOVE instruction...................................................................................................................240
8.2.3 String conversion instructions....................................................................................................241
8.2.3.1 String to value and value to string conversions .........................................................................241
8.2.3.2 String-to-characters and characters-to-string conversions........................................................249
8.2.3.3 ASCII to Hex and Hex to ASCII conversions.............................................................................251
8.2.4 String operation instructions ......................................................................................................253
8.2.4.1 LEN ............................................................................................................................................253
8.2.4.2 CONCAT....................................................................................................................................254
8.2.4.3 LEFT, RIGHT, and MID .............................................................................................................255
8.2.4.4 DELETE .....................................................................................................................................256
8.2.4.5 INSERT......................................................................................................................................257
8.2.4.6 REPLACE ..................................................................................................................................258
8.2.4.7 FIND...........................................................................................................................................259
8.3 Distributed I/O (PROFINET, PROFIBUS, or AS-i).....................................................................260
8.3.1 RDREC and WRREC.................................................................................................................260
8.3.2 RALRM.......................................................................................................................................263
8.3.3 STATUS parameter for RDREC, WRREC, and RALRM...........................................................265
8.3.4 DPRD_DAT and DPWR_DAT....................................................................................................269
8.3.5 DPNRM_DG...............................................................................................................................271
8.4 Interrupts....................................................................................................................................273
8.4.1 Attach and detach instructions...................................................................................................273
8.4.2 Cyclic interrupts..........................................................................................................................276
8.4.2.1 SET_CINT (Set cyclic interrupt).................................................................................................276
8.4.2.2 QRY_CINT (Query cyclic interrupt)............................................................................................278
8.4.3 Time delay interrupts .................................................................................................................279
8.4.4 Asynchronous event interrupts ..................................................................................................281
8.5 Diagnostics (PROFINET or PROFIBUS) ...................................................................................282
8.5.1 LED instruction...........................................................................................................................282
8.5.2 DeviceStates instruction ............................................................................................................283
8.5.3 ModuleStates instruction............................................................................................................284
8.5.4 GET_DIAG instruction................................................................................................................285
8.6 Pulse ..........................................................................................................................................287
8.6.1 CTRL_PWM instruction..............................................................................................................287
8.6.2 Operation of the pulse outputs...................................................................................................289
8.6.3 Configuring a pulse channel for PWM .......................................................................................290
8.7 Data logging...............................................................................................................................291
8.7.1 Data log record structure ...........................................................................................................291
8.7.2 Program instructions that control Data logs...............................................................................293
8.7.2.1 DataLogCreate...........................................................................................................................293
8.7.2.2 DataLogOpen.............................................................................................................................296
8.7.2.3 DataLogClose ............................................................................................................................297

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8.7.2.4 DataLogWrite ............................................................................................................................ 298
8.7.2.5 DataLogNewFile........................................................................................................................ 300
8.7.3 Working with data logs.............................................................................................................. 302
8.7.4 Limits to the size of data log files .............................................................................................. 303
8.7.5 Data log example program........................................................................................................ 305
8.8 Data block control ..................................................................................................................... 310
8.8.1 READ_DBL, WRIT_DBL (Read from or write to a DB in load memory) ................................... 310
8.9 Common error codes for the "Extended" instructions............................................................... 313
9 Technology instructions ......................................................................................................................... 315
9.1 High-speed counter................................................................................................................... 315
9.1.1 Operation of the high-speed counter ........................................................................................ 317
9.1.2 Configuration of the HSC .......................................................................................................... 323
9.2 PID control................................................................................................................................. 324
9.2.1 Inserting the PID instruction and technological object .............................................................. 325
9.2.2 PID_Compact instruction........................................................................................................... 328
9.2.3 PID_3STEP instruction.............................................................................................................. 331
9.2.4 Configuring the PID controller................................................................................................... 337
9.2.5 Commissioning the PID controller............................................................................................. 340
9.3 Basic motion control.................................................................................................................. 340
9.3.1 Configuration of the axis ........................................................................................................... 343
9.3.2 Motion control instructions ........................................................................................................ 346
9.3.2.1 MC_Power instruction ............................................................................................................... 346
9.3.2.2 MC_Reset instruction ................................................................................................................ 349
9.3.2.3 MC_Home instruction................................................................................................................ 350
9.3.2.4 MC_Halt instruction ................................................................................................................... 352
9.3.2.5 MC_MoveAbsolute instruction .................................................................................................. 354
9.3.2.6 MC_MoveRelative instruction.................................................................................................... 356
9.3.2.7 MC_MoveVelocity instruction.................................................................................................... 358
9.3.2.8 MC_MoveJog instruction........................................................................................................... 360
9.3.2.9 MC_CommandTable instruction................................................................................................ 362
9.3.2.10 MC_ChangeDynamic ................................................................................................................ 365
9.3.3 Operation of motion control for S7-1200................................................................................... 367
9.3.3.1 CPU outputs used for motion control ........................................................................................ 367
9.3.3.2 Hardware and software limit switches for motion control.......................................................... 368
9.3.3.3 Homing...................................................................................................................................... 371
9.3.3.4 Jerk limit .................................................................................................................................... 376
9.3.4 Commissioning.......................................................................................................................... 377
9.3.5 Monitoring active commands .................................................................................................... 380
9.3.5.1 Monitoring MC instructions with a "Done" output parameter .................................................... 380
9.3.5.2 Monitoring the MC_Velocity instruction..................................................................................... 384
9.3.5.3 Monitoring the MC_MoveJog instruction................................................................................... 388
10 Communication...................................................................................................................................... 393
10.1 Number of asynchronous communication connections supported ........................................... 394
10.2 PROFINET ................................................................................................................................ 394
10.2.1 Local/Partner connection .......................................................................................................... 394
10.2.2 Open user communication ........................................................................................................ 396
10.2.2.1 Connection IDs for the PROFINET instructions........................................................................ 396
10.2.2.2 Protocols ................................................................................................................................... 399

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10.2.2.3 Ad hoc mode..............................................................................................................................400
10.2.2.4 TCP and ISO on TCP ................................................................................................................401
10.2.2.5 UDP............................................................................................................................................415
10.2.2.6 T_CONFIG .................................................................................................................................421
10.2.2.7 Common parameters for instructions.........................................................................................427
10.2.3 Communication with a programming device..............................................................................429
10.2.3.1 Establishing the hardware communications connection............................................................429
10.2.3.2 Configuring the devices .............................................................................................................430
10.2.3.3 Assigning Internet Protocol (IP) addresses ...............................................................................431
10.2.3.4 Testing your PROFINET network ..............................................................................................431
10.2.4 HMI-to-PLC communication.......................................................................................................431
10.2.4.1 Configuring logical network connections between two devices.................................................432
10.2.5 PLC-to-PLC communication ......................................................................................................433
10.2.5.1 Configuring logical network connections between two devices.................................................434
10.2.5.2 Configuring the Local/Partner connection path between two devices.......................................434
10.2.5.3 Configuring transmit (send) and receive parameters.................................................................434
10.2.6 Configuring a CPU and PROFINET IO device ..........................................................................437
10.2.7 Diagnostics.................................................................................................................................440
10.2.8 Distributed I/O Instructions.........................................................................................................441
10.2.9 Diagnostic instructions ...............................................................................................................441
10.2.10 Diagnostic events for distributed I/O..........................................................................................442
10.3 PROFIBUS.................................................................................................................................442
10.3.1 Communications modules PROFIBUS ......................................................................................444
10.3.1.1 Connecting to PROFIBUS .........................................................................................................444
10.3.1.2 Communications services of the PROFIBUS CMs....................................................................444
10.3.1.3 Other properties of the PROFIBUS CMs ...................................................................................446
10.3.1.4 Configuration examples for PROFIBUS ....................................................................................447
10.3.2 Configuring a DP master and slave device................................................................................448
10.3.2.1 Adding the CM 1243-5 (DP master) module and a DP slave....................................................448
10.3.2.2 Configuring logical network connections between two PROFIBUS devices .............................449
10.3.2.3 Assigning PROFIBUS addresses to the CM 1243-5 module and DP slave..............................449
10.3.3 Distributed I/O Instructions.........................................................................................................451
10.3.4 Diagnostic instructions ...............................................................................................................451
10.3.5 Diagnostic events for distributed I/O..........................................................................................451
10.4 AS-i ............................................................................................................................................452
10.4.1 Configuring an AS-i master and slave device............................................................................453
10.4.1.1 Adding the CM 1243-2 AS-i Master module and AS-i slave......................................................453
10.4.1.2 Configuring logical network connections between two AS-i devices.........................................453
10.4.1.3 Assigning AS-i addresses to the CM 1243-2 AS-i Master module and AS-i slave....................454
10.4.2 Exchanging data between the user program and AS-i slaves...................................................455
10.4.2.1 Configuring slaves with STEP 7.................................................................................................455
10.4.2.2 Configuring slaves without STEP 7 ...........................................................................................457
10.4.3 Distributed I/O Instructions.........................................................................................................458
10.4.4 Working with AS-i online tools ...................................................................................................458
10.5 S7 communication .....................................................................................................................460
10.5.1 GET and PUT instructions .........................................................................................................460
10.5.2 Creating an S7 connection.........................................................................................................464
10.5.3 Configuring the Local/Partner connection path between two devices.......................................464
10.5.4 GET/PUT connection parameter assignment............................................................................465
10.5.4.1 Connection parameters..............................................................................................................465
10.5.4.2 Configuring a CPU-to-CPU S7 connection................................................................................468

Table of contents
S7-1200 Programmable controller
12 System Manual, 11/2011, A5E02486680-05
11 Web server ............................................................................................................................................ 473
11.1 Enabling the Web server........................................................................................................... 474
11.2 Standard web pages ................................................................................................................. 474
11.2.1 Accessing the standard Web pages from the PC ..................................................................... 474
11.2.2 Layout of the standard Web pages........................................................................................... 476
11.2.3 Introduction ............................................................................................................................... 478
11.2.4 Start........................................................................................................................................... 479
11.2.5 Identification .............................................................................................................................. 480
11.2.6 Diagnostic Buffer....................................................................................................................... 480
11.2.7 Module Information ................................................................................................................... 481
11.2.8 Communication ......................................................................................................................... 483
11.2.9 Variable Status.......................................................................................................................... 484
11.2.10 Data Logs.................................................................................................................................. 486
11.2.11 Constraints ................................................................................................................................ 488
11.2.11.1 Features restricted when JavaScript is disabled ................................................................. 489
11.2.11.2 Features restricted when cookies are not allowed............................................................... 490
11.2.11.3 Importing the Siemens security certificate ...........................................................................490
11.2.11.4 Importing CSV format data logs to non-USA/UK versions of Microsoft Excel..................... 491
11.3 User-defined web pages ........................................................................................................... 492
11.3.1 Creating HTML pages............................................................................................................... 493
11.3.2 AWP commands supported by the S7-1200 Web server ......................................................... 494
11.3.2.1 Reading variables ..................................................................................................................... 495
11.3.2.2 Writing variables........................................................................................................................ 496
11.3.2.3 Reading special variables ......................................................................................................... 497
11.3.2.4 Writing special variables ........................................................................................................... 499
11.3.2.5 Using an alias for a variable reference ..................................................................................... 500
11.3.2.6 Defining enum types ................................................................................................................. 501
11.3.2.7 Referencing CPU variables with an enum type ........................................................................ 501
11.3.2.8 Creating fragments.................................................................................................................... 503
11.3.2.9 Importing fragments .................................................................................................................. 504
11.3.2.10 Combining definitions........................................................................................................... 504
11.3.2.11 Handling tag names that contain special characters ........................................................... 505
11.3.3 Configuring use of user-defined Web pages............................................................................. 507
11.3.4 Programming the WWW instruction for user-defined web pages............................................. 508
11.3.5 Downloading the program blocks to the CPU........................................................................... 509
11.3.6 Accessing the user-defined web pages from the PC................................................................ 510
11.3.7 Constraints specific to user-defined Web pages ...................................................................... 510
11.3.8 Example of a user-defined web page ....................................................................................... 511
11.3.8.1 Web page for monitoring and controlling a wind turbine........................................................... 511
11.3.8.2 Reading and displaying controller data..................................................................................... 513
11.3.8.3 Using an enum type .................................................................................................................. 514
11.3.8.4 Writing user input to the controller ............................................................................................ 515
11.3.8.5 Writing a special variable .......................................................................................................... 516
11.3.8.6 Reference: HTML listing of remote wind turbine monitor Web page ........................................ 516
11.3.8.7 Configuration in STEP 7 of the example Web page ................................................................. 520
11.3.9 Setting up user-defined Web pages in multiple languages....................................................... 522
11.3.9.1 Creating the folder structure ..................................................................................................... 522
11.3.9.2 Programming the language switch............................................................................................ 523
11.3.9.3 Configuring STEP 7 to use a multi-language page structure.................................................... 525
11.3.10 Advanced user-defined Web page control................................................................................ 526

Table of contents
S7-1200 Programmable controller
System Manual, 11/2011, A5E02486680-05 13
12 Communication processor ..................................................................................................................... 529
12.1 Using the RS232 and RS485 communication interfaces...........................................................529
12.2 Biasing and terminating an RS485 network connector..............................................................530
12.3 Point-to-Point (PtP) communication...........................................................................................531
12.3.1 Point-to-Point instructions ..........................................................................................................532
12.3.1.1 Common parameters for Point-to-Point instructions..................................................................532
12.3.1.2 PORT_CFG instruction ..............................................................................................................534
12.3.1.3 SEND_CFG instruction ..............................................................................................................535
12.3.1.4 RCV_CFG instruction.................................................................................................................537
12.3.1.5 SEND_PTP instruction...............................................................................................................541
12.3.1.6 RCV_PTP instruction .................................................................................................................544
12.3.1.7 RCV_RST instruction .................................................................................................................546
12.3.1.8 SGN_GET instruction.................................................................................................................547
12.3.1.9 SGN_SET instruction .................................................................................................................548
12.3.2 Configuring the communication ports ........................................................................................549
12.3.2.1 Managing flow control................................................................................................................550
12.3.3 Configuring the transmit (send) and receive parameters ..........................................................552
12.3.3.1 Configuring transmit (send) parameters ....................................................................................552
12.3.3.2 Configuring receive parameters.................................................................................................553
12.3.4 Programming the PtP communications .....................................................................................560
12.3.4.1 Polling architecture ....................................................................................................................561
12.3.5 Example: Point-to-Point communication....................................................................................562
12.3.5.1 Configuring the communication module ....................................................................................563
12.3.5.2 Programming the STEP 7 program ...........................................................................................565
12.3.5.3 Configuring the terminal emulator..............................................................................................566
12.3.5.4 Running the example program...................................................................................................567
12.4 Universal serial interface (USS) communication .......................................................................567
12.4.1 Requirements for using the USS protocol .................................................................................568
12.4.2 USS_DRV instruction.................................................................................................................570
12.4.3 USS_PORT instruction ..............................................................................................................573
12.4.4 USS_RPM instruction ................................................................................................................574
12.4.5 USS_WPM instruction................................................................................................................575
12.4.6 USS status codes ......................................................................................................................576
12.4.7 General drive setup information.................................................................................................578
12.5 Modbus communication .............................................................................................................581
12.5.1 Overview of Modbus RTU and TCP communication .................................................................581
12.5.2 Modbus TCP ..............................................................................................................................584
12.5.2.1 MB_CLIENT (Modbus TCP).......................................................................................................584
12.5.2.2 MB_SERVER (Modbus TCP).....................................................................................................590
12.5.2.3 MB_SERVER example: Multiple TCP connections ...................................................................595
12.5.2.4 MB_CLIENT example 1: Multiple requests with common TCP connection...............................596
12.5.2.5 MB_CLIENT example 2: Multiple requests with different TCP connections..............................597
12.5.2.6 MB_CLIENT example 3: Output image write request................................................................598
12.5.2.7 MB_CLIENT example 4: Coordinating multiple requests ..........................................................598
12.5.3 Modbus RTU..............................................................................................................................599
12.5.3.1 MB_COMM_LOAD.....................................................................................................................600
12.5.3.2 MB_MASTER.............................................................................................................................603
12.5.3.3 MB_SLAVE ................................................................................................................................608
12.5.3.4 Modbus RTU master example program.....................................................................................615
12.5.3.5 Modbus RTU slave example program .......................................................................................617

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S7-1200 Programmable controller
14 System Manual, 11/2011, A5E02486680-05
12.6 Telecontrol and TeleService with the CP 1242-7...................................................................... 618
12.6.1 Connection to a GSM network .................................................................................................. 618
12.6.2 Applications of the CP 1242-7 .................................................................................................. 619
12.6.3 Other properties of the CP ........................................................................................................ 621
12.6.4 Accessories............................................................................................................................... 622
12.6.5 Configuration examples for telecontrol ..................................................................................... 623
13 Teleservice communication (SMTP e-mail) ........................................................................................... 627
13.1 TM_Mail transfer e-mail instruction ........................................................................................... 627
14 Online and diagnostic tools.................................................................................................................... 633
14.1 Status LEDs .............................................................................................................................. 633
14.2 Going online and connecting to a CPU..................................................................................... 635
14.3 Assigning a name to a PROFINET IO device online ................................................................ 636
14.4 Setting the IP address and time of day..................................................................................... 638
14.5 Resetting to factory settings...................................................................................................... 638
14.6 CPU operator panel for the online CPU.................................................................................... 639
14.7 Monitoring the cycle time and memory usage .......................................................................... 640
14.8 Displaying diagnostic events in the CPU .................................................................................. 640
14.9 Comparing offline and online CPUs.......................................................................................... 641
14.10 Monitoring and modifying values in the CPU............................................................................ 642
14.10.1 Going online to monitor the values in the CPU......................................................................... 642
14.10.2 Displaying status in the program editor..................................................................................... 643
14.10.3 Capturing the online values of a DB to reset the start values................................................... 644
14.10.4 Using a watch table to monitor and modify values in the CPU................................................. 645
14.10.4.1 Using a trigger when monitoring or modifying PLC tags ..................................................... 646
14.10.4.2 Enabling outputs in STOP mode.......................................................................................... 647
14.10.5 Forcing values in the CPU ........................................................................................................ 647
14.10.5.1 Using the force table ............................................................................................................ 647
14.10.5.2 Operation of the Force function ........................................................................................... 648
14.11 Downloading in RUN mode....................................................................................................... 650
14.11.1 Prerequisites for "Download in RUN mode".............................................................................. 651
14.11.2 Changing your program in RUN mode......................................................................................651
14.11.3 Downloading selected blocks.................................................................................................... 652
14.11.4 Downloading a single selected block with a compile error in another block............................. 653
14.11.5 System reaction if the download process fails..........................................................................654
14.11.6 Downloading the program in RUN mode .................................................................................. 654
A Technical specifications......................................................................................................................... 657
A.1 General Technical Specifications.............................................................................................. 657
A.2 CPU 1211C ............................................................................................................................... 663
A.2.1 General specifications and features.......................................................................................... 663
A.2.2 Digital inputs and outputs.......................................................................................................... 667
A.2.3 Analog inputs ............................................................................................................................ 668
A.2.3.1 Step response of the built-in analog inputs of the CPU............................................................ 669
A.2.3.2 Sample time for the built-in analog ports of the CPU................................................................ 669
A.2.3.3 Measurement ranges of the analog inputs for voltage.............................................................. 669

Table of contents
S7-1200 Programmable controller
System Manual, 11/2011, A5E02486680-05 15
A.2.4 Wiring diagrams .........................................................................................................................670
A.3 CPU 1212C................................................................................................................................671
A.3.1 General specifications and features ..........................................................................................671
A.3.2 Digital inputs and outputs...........................................................................................................675
A.3.3 Analog inputs .............................................................................................................................676
A.3.3.1 Step response of the built-in analog inputs of the CPU.............................................................677
A.3.3.2 Sample time for the built-in analog ports of the CPU ................................................................677
A.3.3.3 Measurement ranges of the analog inputs for voltage ..............................................................678
A.3.4 Wiring diagrams .........................................................................................................................679
A.4 CPU 1214C................................................................................................................................680
A.4.1 General specifications and features ..........................................................................................680
A.4.2 Digital inputs and outputs...........................................................................................................684
A.4.3 Analog inputs .............................................................................................................................685
A.4.3.1 Step response of the built-in analog inputs of the CPU.............................................................686
A.4.3.2 Sample time for the built-in analog ports of the CPU ................................................................686
A.4.3.3 Measurement ranges of the analog inputs for voltage ..............................................................687
A.4.4 CPU 1214C Wiring Diagrams ....................................................................................................687
A.5 Digital signal modules (SMs) .....................................................................................................689
A.5.1 SM 1221 Digital Input Specifications .........................................................................................689
A.5.2 SM 1222 8-Point Digital Output Specifications..........................................................................690
A.5.3 SM 1222 16-Point Digital Output Specifications........................................................................692
A.5.4 SM 1223 Digital Input/Output VDC Specifications.....................................................................695
A.5.5 SM 1223 Digital Input/Output AC Specifications .......................................................................698
A.6 Analog signal modules (SMs) ....................................................................................................700
A.6.1 SM 1231 analog input module specifications ............................................................................700
A.6.2 SM 1232 analog output module specifications ..........................................................................702
A.6.3 SM 1234 analog input/output module specifications .................................................................704
A.6.4 Step response of the analog inputs ...........................................................................................707
A.6.5 Sample time and update times for the analog inputs ................................................................707
A.6.6 Measurement ranges of the analog inputs for voltage ..............................................................708
A.6.7 Output (AQ) measurement ranges for voltage and current (SB and SM)..................................708
A.7 Thermocouple and RTD signal modules (SMs).........................................................................709
A.7.1 SM 1231 Thermocouple.............................................................................................................709
A.7.1.1 Basic operation for a thermocouple ...........................................................................................711
A.7.1.2 Selection tables for the SM 1231 thermocouple........................................................................712
A.7.2 SM 1231 RTD ............................................................................................................................714
A.7.2.1 Selection tables for the SM 1231 RTD ......................................................................................717
A.8 Digital signal boards (SBs).........................................................................................................720
A.8.1 SB 1221 200 kHz digital input specifications.............................................................................720
A.8.2 SB 1222 200 kHz digital output specifications...........................................................................722
A.8.3 SB 1223 200 kHz digital input / output specifications................................................................724
A.8.4 SB 1223 2 X 24 VDC input / 2 X 24 VDC output specifications ................................................726
A.9 Analog signal boards (SBs) .......................................................................................................728
A.9.1 SB 1231 1 analog input specifications.......................................................................................728
A.9.2 SB 1232 1 analog output specifications.....................................................................................730
A.9.3 Measurement ranges for analog inputs and outputs .................................................................732
A.9.3.1 Step response of the analog inputs ...........................................................................................732
A.9.3.2 Sample time and update times for the analog inputs ................................................................732
A.9.3.3 Measurement ranges of the analog inputs for voltage ..............................................................733

Table of contents
S7-1200 Programmable controller
16 System Manual, 11/2011, A5E02486680-05
A.9.3.4 Output (AQ) measurement ranges for voltage and current (SB and SM)................................. 733
A.9.4 Thermocouple SBs.................................................................................................................... 734
A.9.4.1 SB 1231 1 analog thermocouple input specifications ............................................................... 734
A.9.4.2 Basic operation for a thermocouple .......................................................................................... 736
A.9.5 RTD SBs ................................................................................................................................... 738
A.9.5.1 SB 1231 1 analog RTD input specifications..............................................................................738
A.9.5.2 Selection tables for the SB 1231 RTD ...................................................................................... 740
A.10 Communication interfaces......................................................................................................... 743
A.10.1 PROFIBUS................................................................................................................................ 743
A.10.1.1 CM 1242-5................................................................................................................................. 743
A.10.1.2 CM 1243-5................................................................................................................................. 744
A.10.2 GPRS ........................................................................................................................................ 746
A.10.2.1 CP 1242-7 ................................................................................................................................. 747
A.10.3 CM 1243-2 AS-i Master............................................................................................................. 749
A.10.3.1 Technical data for the AS-i master CM 1243-2......................................................................... 749
A.10.3.2 Electrical connections of the AS-i master CM 1243-2 .............................................................. 750
A.10.4 RS232, RS422, and RS485 ...................................................................................................... 752
A.10.4.1 CB 1241 RS485 Specifications................................................................................................. 752
A.10.4.2 CM 1241 RS485 Specifications ................................................................................................ 754
A.10.4.3 CM 1241 RS232 Specifications ................................................................................................ 755
A.10.4.4 CM 1241 RS422/485 Specifications ......................................................................................... 756
A.11 TeleService (TS Adapter and TS Adapter modular) ................................................................. 758
A.12 SIMATIC memory cards............................................................................................................ 758
A.13 Input simulators......................................................................................................................... 758
A.14 I/O expansion cable .................................................................................................................. 759
A.15 Companion products................................................................................................................. 760
A.15.1 PM 1207 power module ............................................................................................................ 760
A.15.2 CSM 1277 compact switch module........................................................................................... 760
B Calculating a power budget ................................................................................................................... 761
C Order numbers....................................................................................................................................... 765
C.1 CPU modules ............................................................................................................................ 765
C.2 Signal modules (SMs) and signal boards (SBs) ....................................................................... 765
C.3 Communication ......................................................................................................................... 766
C.4 Other modules........................................................................................................................... 767
C.5 Memory cards ........................................................................................................................... 768
C.6 Basic HMI devices..................................................................................................................... 768
C.7 Spare parts and other hardware ............................................................................................... 768
C.8 Programming software.............................................................................................................. 769
C.9 Documentation .......................................................................................................................... 769
Index...................................................................................................................................................... 771

S7-1200 Programmable controller
System Manual, 11/2011, A5E02486680-05 17
Product overview 1
1.1 Introducing the S7-1200 PLC
The S7-1200 controller provides the flexibility and power to control a wide variety of devices
in support of your automation needs. The compact design, flexible configuration, and
powerful instruction set combine to make the S7-1200 a perfect solution for controlling a
wide variety of applications.
The CPU combines a microprocessor, an integrated power supply, input and output circuits,
built-in PROFINET, high-speed motion control I/O, and on-board analog inputs in a compact
housing to create a powerful controller. After you download your program, the CPU contains
the logic required to monitor and control the devices in your application. The CPU monitors
the inputs and changes the outputs according to the logic of your user program, which can
include Boolean logic, counting, timing, complex math operations, and communications with
other intelligent devices.
The CPU provides a PROFINET port for communication over a PROFINET network.
Additional modules are available for communicating over PROFIBUS, GPRS, RS485 or
RS232 networks.
① Power connector
② Memory card slot under top door
③ Removable user wiring connectors
(behind the doors)
④ Status LEDs for the on-board I/O
⑤ PROFINET connector (on the bottom of
the CPU)
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Several security features help protect access to both the CPU and the control program:
● Every CPU provides password protection (Page 153) that allows you to configure access
to the CPU functions.
● You can use "know-how protection" (Page 154) to hide the code within a specific block.
● You can use copy protection (Page 156) to bind your program to a specific memory card
or CPU.

94BProduct overview
1.1 Introducing the S7-1200 PLC
S7-1200 Programmable controller
18 System Manual, 11/2011, A5E02486680-05
Table 1- 1 Comparing the CPU models
Feature CPU 1211C CPU 1212C CPU 1214C
Physical size (mm) 90 x 100 x 75 90 x 100 x 75 110 x 100 x 75
Work 25 Kbytes 25 Kbytes 50 Kbytes
Load 1 Mbyte 1 Mbyte 2 Mbytes
User memory
Retentive 2 Kbytes 2 Kbytes 2 Kbytes
Digital 6 inputs/4 outputs 8 inputs/6 outputs 14 inputs/10 outputs Local on-board I/O
Analog 2 inputs 2 inputs 2 inputs
Inputs (I) 1024 bytes 1024 bytes 1024 bytes Process image
size Outputs (Q) 1024 bytes 1024 bytes 1024 bytes
Bit memory (M) 4096 bytes 4096 bytes 8192 bytes
Signal module (SM) expansion None 2 8
Signal board (SB) or communication
board (CB)
1 1 1
Communication module (CM)
(left-side expansion)
3 3 3
Total 3 4 6
Single phase 3 at 100 kHz 3 at 100 kHz
1 at 30 kHz
3 at 100 kHz
3 at 30 kHz
High-speed
counters
Quadrature phase 3 at 80 kHz 3 at 80 kHz
1 at 20 kHz
3 at 80 kHz
3 at 20 kHz
Pulse outputs1 2 2 2
Memory card SIMATIC Memory card (optional)
Real time clock retention time 10 days, typical / 6 day minimum at 40 degrees C
PROFINET 1 Ethernet communications port
Real math execution speed 18 μs/instruction
Boolean execution speed 0.1 μs/instruction
1 For CPU models with relay outputs, you must install a digital signal board (SB) to use the pulse outputs.
Each CPU provides dedicated HMI connections to support up to 3 HMI devices. The total
number of HMI is affected by the types of HMI panels in your configuration. For example,
you could have up to three SIMATIC Basic panels connected to your CPU, or you could
have up to two SIMATIC Comfort panels with one additional Basic panel.
The different CPU models provide a diversity of features and capabilities that help you create
effective solutions for your varied applications. For detailed information about a specific
CPU, see the technical specifications (Page 657).

94BProduct overview
1.1 Introducing the S7-1200 PLC
S7-1200 Programmable controller
System Manual, 11/2011, A5E02486680-05 19
Table 1- 2 Blocks, timers and counters supported by S7-1200
Element Description
Type OB, FB, FC, DB
Size 25 Kbytes (CPU 1211C and CPU 1212C)
50 Kbytes (CPU 1214C)
Quantity Up to 1024 blocks total (OBs + FBs + FCs + DBs)
Address range for FBs, FCs,
and DBs
1 to 65535 (such as FB 1 to FB 65535)
Nesting depth 16 from the program cycle or start up OB; 4 from the time delay
interrupt, time-of-day interrupt, cyclic interrupt, hardware interrupt,
time error interrupt, or diagnostic error interrupt OB
Blocks
Monitoring Status of 2 code blocks can be monitored simultaneously
Program cycle Multiple: OB 1, OB 200 to OB 65535
Startup Multiple: OB 100, OB 200 to OB 65535
Time-delay interrupts and
cyclic interrupts
41 (1 per event): OB 200 to OB 65535
Hardware interrupts (edges
and HSC)
50 (1 per event): OB 200 to OB 65535
Time error interrupts 1: OB 80
OBs
Diagnostic error interrupts 1: OB 82
Type IEC
Quantity Limited only by memory size
Timers
Storage Structure in DB, 16 bytes per timer
Type IEC
Quantity Limited only by memory size
Counters
Storage Structure in DB, size dependent upon count type
SInt, USInt: 3 bytes
Int, UInt: 6 bytes
DInt, UDInt: 12 bytes
1 Time-delay and cyclic interrupts use the same resources in the CPU. You can have only a total of 4 of these interrupts
(time-delay plus cyclic interrupts). You cannot have 4 time-delay interrupts and 4 cyclic interrupts.

94BProduct overview
1.2 Expansion capability of the CPU
S7-1200 Programmable controller
20 System Manual, 11/2011, A5E02486680-05
1.2 Expansion capability of the CPU
The S7-1200 family provides a variety of modules and plug-in boards for expanding the
capabilities of the CPU with additional I/O or other communication protocols. For detailed
information about a specific module, see the technical specifications (Page 657).
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① Communication module (CM), communcation processor (CP), or TS Adapter
② CPU
③ Signal board (SB) or communication board (CB)
④ Signal module (SM)
Table 1- 3 Digital signal modules and signal boards
Type Input only Output only Combination In/Out
③ digital SB 4 x 24VDC In,
200 kHz
4 x 5VDC In,
200 kHz
4 x 24VDC Out,
200 kHz
4 x 5VDC Out,
200 kHz
2 x 24VDC In / 2 x 24VDC Out
2 x 24VDC In / 2 x 24VDC Out,
200 kHz
2 x 5VDC In / 2 x 5VDC Out,
200 kHz
8 x 24VDC In 8 x 24VDC Out
8 x Relay Out
8 x Relay Out
(Changeover)
8 x 24VDC In / 8 x 24VDC Out
8 x 24VDC In / 8 x Relay Out
8 x 120/230VAC In / 8 x Relay Out
④ digital SM
16 x 24VDC In 16 x 24VDC Out
16 x Relay Out
16 x 24VDC In / 16 x 24VDC Out
16 x 24VDC In / 16 x Relay Out