SysRWLReadLock (FUN)

FUNCTION SysRWLReadLock : RTS_IEC_RESULT

This function to enter a read lock(synchronization object). NOTE: Several readers can enter the lock simultaneously! But they are synchronized against an entered write lock! RETURN: Returns the runtime system error code (see CmpErrors.library)

InOut:

Scope	Name	Type	Comment
Return	SysRWLReadLock	RTS_IEC_RESULT
Input	hRWLock	RTS_IEC_HANDLE	Handle to the ReadWrite lock object created by SysRWLCreate