SysSemEnter (FUN)

FUNCTION SysSemEnter : RTS_IEC_RESULT

This function must be called before a task accesses data which also are used by other tasks. Thus the data will be bocked for other tasks, which also use SysSemEnter until by function SysSemLeave the semaphore will be set free again. The semaphore is identified by its handle.

InOut:

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