SysSemTry (FUN)

FUNCTION SysSemTry : RTS_IEC_RESULT

Try to enter the semaphore. If semaphore is available, the function entered the semaphore and returned ERR_OK. If semaphore is not available, ERR_FAILED is returned. The semaphore is identified by its handle.

Note

Function is not blocking instead of SysSemEnter! Function returns immediate with an entered lock (ERR_OK) or without having the lock (ERR_FAILED)!

InOut:

Scope	Name	Type	Comment
Return	SysSemTry	RTS_IEC_RESULT	Returns the runtime system error code (see CmpErrors.library)
Input	hSem	RTS_IEC_HANDLE	Handle of the semaphore