Siemens SIMATIC S7 System Manual page 9

7.13.4 END, STOP, and WDR (watchdog timer reset) .................................................................... 354
7.13.5 GET_ERROR (Get non-fatal error code) .............................................................................. 356
7.14 Shift and rotate ...................................................................................................................... 357
7.14.1 Shift and rotate ...................................................................................................................... 357
7.14.2 Shift register bit ..................................................................................................................... 360
7.15 String ..................................................................................................................................... 362
7.15.1 String (Get length, copy, and concatenate) .......................................................................... 362
7.15.2 Copy substring from string .................................................................................................... 364
7.15.3 Find string and first character within string ........................................................................... 365
7.16 Table ..................................................................................................................................... 368
7.16.1 Add to table ........................................................................................................................... 368
7.16.2 First-in-first-out and last-in-first-out ....................................................................................... 370
7.16.3 Memory fill ............................................................................................................................. 372
7.16.4 Table find .............................................................................................................................. 373
7.17 Timer ..................................................................................................................................... 377
7.17.1 Timer instructions .................................................................................................................. 377
7.17.2 Timer programming tips and examples ................................................................................ 380
7.17.3 Interval timers ....................................................................................................................... 386
7.18 Subroutine ............................................................................................................................. 388
7.18.1 CALL (subroutine) and RET (conditional return) .................................................................. 388
8 Communication ................................................................................................................................... 395
8.1 CPU communication connections ......................................................................................... 396
8.2 CPU communication ports .................................................................................................... 397
8.3 HMIs and communication drivers ......................................................................................... 398
8.4 Ethernet ................................................................................................................................ 400
8.4.1 Overview ............................................................................................................................... 400
8.4.2 Local/partner connection ...................................................................................................... 400
8.4.3 Sample Ethernet network configurations .............................................................................. 401
8.4.4 Assigning Internet Protocol (IP) addresses .......................................................................... 402
8.4.4.1 Assigning IP addresses to programming and network devices ............................................ 402
8.4.4.2 Configuring or changing an IP address for a CPU or device in your project ........................ 404
8.4.4.3 Searching for CPUs and devices on your Ethernet network ................................................ 412
8.4.5 Locating the Ethernet (MAC) address on the CPU ............................................................... 413
8.4.6 HMI-to-CPU communication ................................................................................................. 415
8.4.7 Open user communication .................................................................................................... 417
8.4.7.1 Protocols ............................................................................................................................... 417
8.4.7.2 Connections .......................................................................................................................... 418
8.4.7.3 Ports and TSAPs .................................................................................................................. 419
8.5 PROFIBUS ............................................................................................................................ 421
8.5.1 EM DP01 PROFIBUS DP module ........................................................................................ 423
8.5.1.1 Distributed Peripheral (DP) standard communications ......................................................... 423
8.5.1.2 Using the EM DP01 to connect an S7-200 SMART as a DP device .................................... 424
8.5.1.3 Configuring the EM DP01 ..................................................................................................... 426
8.5.1.4 Data consistency ................................................................................................................... 427
8.5.1.5 Supported configurations ...................................................................................................... 428
8.5.1.6 Installing the EM DP01 GSD file ........................................................................................... 429
8.5.1.7 Configuring the EM DP01 I/O ............................................................................................... 431
S7-200 SMART
System Manual, V2.3, 07/2017, A5E03822230-AF
Table of contents
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