Siemens SIMATIC S7-1200 Systemhandbuch Seite 9

7.10.2 Rotieroperationen ......................................................................................................................251
8 Erweiterte Anweisungen ........................................................................................................................ 253
8.1 Datum und Uhrzeit .....................................................................................................................253
8.1.1 Datum- und Uhrzeitoperationen.................................................................................................253
8.1.2 Systemuhr einstellen und lesen .................................................................................................255
8.1.3 Betriebsstundenzähler ...............................................................................................................257
8.1.4 Anweisung SET_TIMEZONE .....................................................................................................259
8.2 Zeichenketten- und Zeichenanweisungen .................................................................................260
8.2.1 Datentyp String ..........................................................................................................................260
8.2.2 Anweisung S_MOVE..................................................................................................................261
8.2.3 Zeichenkettenkonvertierungsoperationen..................................................................................261
8.2.3.1 Konvertierung Zeichenketten in Werte und Werte in Zeichenketten .........................................261
8.2.3.2 Umwandlung Zeichenkette-in-Zeichen und Zeichen-in-Zeichenkette .......................................270
8.2.3.3 Umwandlung von ASCII-Zeichenketten in Hexadezimalzahlen und von
Hexadezimalzahlen in ASCII-Zeichenketten .............................................................................272
8.2.4 Zeichenkettenanweisungen .......................................................................................................274
8.2.4.1 LEN ............................................................................................................................................274
8.2.4.2 CONCAT ....................................................................................................................................275
8.2.4.3 LEFT, RIGHT und MID ..............................................................................................................276
8.2.4.4 DELETE .....................................................................................................................................277
8.2.4.5 INSERT ......................................................................................................................................278
8.2.4.6 REPLACE ..................................................................................................................................279
8.2.4.7 FIND...........................................................................................................................................280
8.3 Dezentrale E/A (PROFINET, PROFIBUS oder AS-i).................................................................282
8.3.1 RDREC und WRREC.................................................................................................................282
8.3.2 RALRM.......................................................................................................................................285
8.3.3 STATUS-Parameter für RDREC, WRREC und RALRM ...........................................................287
8.3.4 DPRD_DAT und DPWR_DAT....................................................................................................291
8.3.5 DPNRM_DG...............................................................................................................................293
8.4 Alarme........................................................................................................................................296
8.4.1 Operationen ATTACH und DETACH.........................................................................................296
8.4.2 Weckalarme ...............................................................................................................................299
8.4.2.1 SET_CINT (Weckalarm setzen).................................................................................................299
8.4.2.2 QRY_CINT (Weckalarm abfragen) ............................................................................................301
8.4.3 Verzögerungsalarme..................................................................................................................303
8.4.4 Asynchronereignisalarme ..........................................................................................................305
8.5 Diagnose (PROFINET oder PROFIBUS) ..................................................................................306
8.5.1 Anweisung LED .........................................................................................................................306
8.5.2 Anweisung DeviceStates ...........................................................................................................307
8.5.3 Anweisung ModuleStates ..........................................................................................................308
8.5.4 Anweisung GET_DIAG ..............................................................................................................309
8.6 Impuls.........................................................................................................................................311
8.6.1 Operation CTRL_PWM ..............................................................................................................311
8.6.2 Funktionsweise der Impulsausgänge ........................................................................................313
8.6.3 Konfigurieren eines Impulskanals für PWM...............................................................................314
8.7 Datenprotokollierung..................................................................................................................315
8.7.1 Datensatzstruktur der Datenprotokolle ......................................................................................316
8.7.2 Programmanweisungen zum Steuern von Datenprotokollen ....................................................317
S7-1200 Automatisierungssystem
Systemhandbuch, 11/2011, A5E02486681-05
Inhaltsverzeichnis
9