OPC Data Access Compatibility

OPC is an open industry standard device interface that provides interoperability between disparate field devices, automation control systems, and business systems. OPC-DA is based on ActiveX, OLE, COM and Distributed COM technologies. You can find more details at the OPC Foundation Web site, http://www.opcfoundation.org/, or the NI OPC Web site, http://ni.com/opc/. The following tables give details about NI products and OPC compatibility.

NI OPC-DA Client Interfaces


  OPC-DA 1.0 OPC-DA 2.0 OPC-DA 3.0
DataSocket API X
Lookout (5.1) X
Lookout (6.2 and higher)
Shared Variable OPC Client I/O Server (LabVIEW DSC 8x) X

NI OPC-DA Server Interfaces


  OPC 1.0A OPC 2.0  OPC-DA 3.0
NI-DAQ 6.8 X X
NI-DAQ 6.9 X
LabVIEW DSC Module 6.x and 7.x X
Lookout 6.2+
FieldPoint 2.0.2 (and higher) X X
NI-FBUS 2.3.5 X X
Shared Variable Engine with DSC 8 Module (and higher) X

Note: OPC Unified Architecture (UA) servers/clients are not compatible with OPC-DA interfaces.