When the SFC has been completed the return value RET_VAL indicates the number ofdisables, i.e. the number of calls to the SFC 41 (processing of all alarm interrupts is onlyenabled again when RET_VAL = 0).Value Description8080h The function was started in spite of the fact that the alarm interrupt had already been enabled.14.1.33 SFC 43 - RE_TRIGR - Retrigger the watchdogThe SFC 43 RE_TRIGR (retrigger watchdog) restarts the watchdog timer of the CPU.The SFC 43 has neither parameters nor return values.14.1.34 SFC 44 - REPL_VAL - Replace value to ACCU1The SFC 44 REPL_VAL (replace value) transfers a value into ACCU1 of the programlevel that cause the fault. A call to the SFC 44 can only be issued from synchronous faultOBs (OB 121, OB 122).Application example for the SFC 44:When an input module malfunctions so that it is not possible to read any values from therespective module then OB 122 will be started after each attempt to access the module.The SFC 44 REPL_VAL can be used in OB 122 to transfer a suitable replacement valueinto ACCU1 of the program level that was interrupted. The program will be continued withthis replacement value. The information required to select a replacement value (e.g. themodule where the failure occurred, the respective address) are available from the localvariables of OB 122.ParametersParameter Declaration Data type Memory block DescriptionVAL INPUT DWORD I, Q, M, D, L,constantReplacement valueRET_VAL OUTPUT INT I, Q, M, D, L The return value contains an error code if an erroris detected when the function is being processed.RET_VAL (Return value)Value Description0000h No error has occurred. A replacement value has been entered.8080h The call to the SFC 44 was not issued from a synchronous faultOB (OB 121, OB 122).14.1.35 SFC 46 - STP - STOP the CPUThe SFC 46 STP changes the operation mode of the CPU to STOP.RET_VAL (Return value)DescriptionParameter and returnvaluesDescriptionDescriptionVIPA SPEED7Integrated StandardSystem Functions > SFC 46 - STP - STOP the CPUHB00 | OPL_SP7 | Operation list | en | 18-30682
