Table of contents
S7-1200 Programmable controller
12 System Manual, 03/2014, A5E02486680-AG
8.2.4.8 FIND (Find characters in a character string) instruction ........................................................... 313
8.3 Distributed I/O (PROFINET, PROFIBUS, or AS-i) .................................................................... 314
8.3.1 Distributed I/O Instructions ........................................................................................................ 314
8.3.2 RDREC and WRREC (Read/write data record) instructions .................................................... 315
8.3.3 RALRM (Receive interrupt) instruction ..................................................................................... 318
8.3.4 STATUS parameter for RDREC, WRREC, and RALRM .......................................................... 322
8.3.5 DPRD_DAT and DPWR_DAT (Read/write consistent data for DP slaves) instructions ........... 326
8.3.6 DPNRM_DG (Read diagnostic data from a DP slave) instruction ............................................ 328
8.4 Interrupts ................................................................................................................................... 331
8.4.1 ATTACH and DETACH (Attach/detach an OB and an interrupt event) instructions................. 331
8.4.2 Cyclic interrupts ......................................................................................................................... 334
8.4.2.1 SET_CINT (Set cyclic interrupt parameters) instruction ........................................................... 334
8.4.2.2 QRY_CINT (Query cyclic interrupt parameters) instruction ...................................................... 336
8.4.3 Time of day interrupts ............................................................................................................... 337
8.4.3.1 SET_TINTL (Set time of day interrupt) ...................................................................................... 337
8.4.3.2 CAN_TINT (Cancel time of day interrupt) ................................................................................. 339
8.4.3.3 ACT_TINT (Activate time of day interrupt) ................................................................................ 339
8.4.3.4 QRY_TINT (Query status of time of day interrupt) .................................................................... 340
8.4.4 Time delay interrupts ................................................................................................................. 342
8.4.5 DIS_AIRT and EN_AIRT (Delay/enable execution of higher priority interrupts and
asynchronous error events) instructions ................................................................................... 344
8.5 Diagnostics (PROFINET or PROFIBUS) .................................................................................. 345
8.5.1 Diagnostic instructions .............................................................................................................. 345
8.5.2 Diagnostic events for distributed I/O ......................................................................................... 345
8.5.3 LED (Read LED status) instruction ........................................................................................... 346
8.5.4 DeviceStates instruction ............................................................................................................ 347
8.5.4.1 DeviceStates example configurations ....................................................................................... 349
8.5.5 ModuleStates instruction ........................................................................................................... 353
8.5.5.1 ModuleStates example configurations ...................................................................................... 354
8.5.6 GET_DIAG (Read diagnostic information) instruction .............................................................. 358
8.6 Pulse ......................................................................................................................................... 364
8.6.1 CTRL_PWM (Pulse width modulation) instruction .................................................................... 364
8.6.2 Operation of the pulse outputs .................................................................................................. 365
8.6.3 Configuring a pulse channel for PWM ...................................................................................... 367
8.7 Recipes and Data logs .............................................................................................................. 369
8.7.1 Recipes ..................................................................................................................................... 369
8.7.1.1 Recipe overview ........................................................................................................................ 369
8.7.1.2 Recipe DB example .................................................................................................................. 370
8.7.1.3 Program instructions that transfer recipe data .......................................................................... 374
8.7.1.4 Recipe example program .......................................................................................................... 378
8.7.2 Data logs ................................................................................................................................... 380
8.7.2.1 Data log record structure ........................................................................................................... 381
8.7.2.2 Program instructions that control data logs ............................................................................... 382
8.7.2.3 Working with data logs .............................................................................................................. 392
8.7.2.4 Limit to the size of data log files ................................................................................................ 393
8.7.2.5 Data log example program ........................................................................................................ 396
8.8 Data block control ..................................................................................................................... 401
8.8.1 READ_DBL and WRIT_DBL (Read/write a data block in load memory) instructions ............... 401
8.9 Address handling ...................................................................................................................... 404
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