ABB AC500-S - 4.6.2 Safety_Standard.lib

4.6.2 Safety_Standard.lib
Only a short description is provided for standard CoDeSys POUs from Safety_Standard.lib. For more
detailed information about CoDeSys Standard Functions Ä AC500 User Documentation.
RS
Bistable function, reset dominant
Q1 = NOT RESET1 AND (SET OR Q1)
SEMA
Software semaphore. Interruptable!
BUSY is TRUE, if there was a call with CLAIM = TRUE,
but no call with RELEASE = TRUE.
CLAIM = TRUE sets BUSY = TRUE;
RELEASE = TRUE sets BUSY = FALSE;
SR
Bistable function, set dominant
Q1 = SET1 OR (NOT RESET AND Q1)
CTD
Counter Down.
CV is decremented by 1 if CD has a rising edge.
Q is TRUE, if CV reached 0.
Configuration and programming
AC500-S Libraries > Safety_Standard.lib
30.03.2017AC500-S226