standby state. Always 0
_RDT_NO_ERROR 0 ERR
OperationOK 16#0 Exchange
Returns 0 on success
terminating 0 will be
written to the file. 0
ERR_OK 0 The action
_IIecVarAccessOpcUaMetaData DWORD 16#C0 ITFID
UserGroupIDs ARRAY [0..VUM
be 0 terminated
