User`s guide

12 • OPC Interface of NuDAQ PCI card OPC Server
3
OPC Interface of NuDAQ
PCI card OPC Server
OPC Specification defined the standard OPC interface. Users can use the
OPC interface to communicate with OPC server. Following description is
the interface of NuDAQ PCI card OPC server.
3.1 OPCServer Object
IOPCCommon
HRESULT SetLocaleID (dwLcid);
HRESULT GetLocaleID (pdwLcid);
HRESULT QueryAvailableLocaleIDs (pdwCount, pdwLcid);
HRESULT GetErrorString (dwError, ppString);
HRESULT SetClientName (szName);
IOPCServer
HRESULT AddGroup (szName, bActive, dwRequestedUpdateRate,
hClientGroup, pTimeBias, pPercentDeadband, dwLCID,
phServerGroup, pRevisedUpdateRate, riid, ppUnk);
HRESULT GetErrorString (dwError, dwLocale, ppString) ;
HRESULT GetGroupByName (szName, riid, ppUnk);