SMC_GetObjFromHistory (FUN)

FUNCTION SMC_GetObjFromHistory : POINTER TO SMC_GEOINFO

Returns an object that has been deleted but not yet overwritten. For N >= 0, SMC_GetObjFromHistory(poq, N) = SMC_GetObj(poq, N). For negative N, the objects from the history are retrieved. (N=-1 gets the newest object from history, smaller N get older elements). The valid range for N is -SMC_GetHistoryCount(poq) ... SMC_GetCount(poq) - 1.

task-safety: call from consumer task only

InOut:

Scope Name Type Comment Return SMC_GetObjFromHistory POINTER TO SMC_GEOINFO Input poq POINTER TO SMC_OUTQUEUE The out queue N DINT Index of the object, counting is started with N=0