Siemens Simatic S7 Series System Manual

Table of contents
S7-200 SMART
System Manual, 09/2015, A5E03822230-AC
9
7.14.2 Shift register bit ..................................................................................................................... 317
7.15 String ..................................................................................................................................... 320
7.15.1 String (Get length, copy, and concatenate) .......................................................................... 320
7.15.2 Copy substring from string .................................................................................................... 322
7.15.3 Find string and first character within string ........................................................................... 323
7.16 Table ..................................................................................................................................... 326
7.16.1 Add to table ........................................................................................................................... 326
7.16.2 First-in-first-out and last-in-first-out ....................................................................................... 328
7.16.3 Memory fill ............................................................................................................................. 330
7.16.4 Table find .............................................................................................................................. 331
7.17 Timer ..................................................................................................................................... 335
7.17.1 Timer instructions .................................................................................................................. 335
7.17.2 Timer programming tips and examples ................................................................................ 337
7.17.3 Interval timers ....................................................................................................................... 344
7.18 Subroutine ............................................................................................................................. 346
7.18.1 CALL (subroutine) and RET (conditional return) .................................................................. 346
8 Communication ...................................................................................................................................... 353
8.1 CPU communication connections ......................................................................................... 354
8.2 CPU communication ports .................................................................................................... 355
8.3 HMIs and communication drivers ......................................................................................... 355
8.4 Ethernet ................................................................................................................................ 357
8.4.1 Overview ............................................................................................................................... 357
8.4.2 TCP/IP protocol ..................................................................................................................... 357
8.4.3 Local/partner connection ...................................................................................................... 358
8.4.4 Sample Ethernet network configurations .............................................................................. 358
8.4.5 Assigning Internet Protocol (IP) addresses .......................................................................... 359
8.4.5.1 Assigning IP addresses to programming and network devices ............................................ 359
8.4.5.2 Configuring or changing an IP address for a CPU or device in your project ........................ 362
8.4.5.3 Searching for CPUs and devices on your Ethernet network ................................................ 369
8.4.6 Locating the Ethernet (MAC) address on the CPU ............................................................... 370
8.4.7 HMI-to-CPU communication ................................................................................................. 371
8.5 PROFIBUS ............................................................................................................................ 372
8.5.1 EM DP01 PROFIBUS DP module ........................................................................................ 373
8.5.1.1 Distributed Peripheral (DP) standard communications ......................................................... 373
8.5.1.2 Using the EM DP01 to connect an S7-200 SMART as a DP device .................................... 374
8.5.1.3 Configuring the EM DP01 ..................................................................................................... 375
8.5.1.4 Data consistency ................................................................................................................... 376
8.5.1.5 Supported configurations ...................................................................................................... 377
8.5.1.6 Installing the EM DP01 GSD file ........................................................................................... 378
8.5.1.7 Configuring the EM DP01 I/O ............................................................................................... 379
8.5.1.8 Example of V memory and I/O address area ....................................................................... 382
8.5.1.9 User program considerations ................................................................................................ 384
8.5.1.10 LED status indicators for the EM DP01 PROFIBUS DP ....................................................... 386
8.5.1.11 Using HMIs and S7-CPUs with the EM DP01 ...................................................................... 387
8.5.1.12 Device database file: GSD .................................................................................................... 388
8.5.1.13 PROFIBUS DP communications to a CPU example program ............................................. 392
8.5.1.14 Reference to the EM DP01 PROFIBUS DP module technical specifications ...................... 394

Siemens Simatic S7 Series Specifications

General

CPU	Varies by model (e.g., S7-300, S7-400, S7-1200, S7-1500)
Communication Interfaces	PROFIBUS, PROFINET, Ethernet, MPI
Programming	TIA Portal, STEP 7
Programming Languages	LAD, FBD, STL, SCL, GRAPH
I/O Modules	Digital, Analog, Specialty modules available
Operating Temperature	0°C to 60°C (standard models)
Mounting	DIN rail mounting
Operating Voltage	24V DC or 120/230V AC (varies by model)
Protection Class	IP20 (standard models)
Memory	Varies depending on the S7 model. Includes work memory (RAM) for program execution, load memory (EEPROM or Flash) for program storage, and system memory for operating system functions. Memory sizes range from kilobytes to megabytes.