How can I communicate with a OPC server using CVI 5.0 (no Datasocket facilities) ?

[Poussin]

I just want to read value on a OPC server using CVI 5.0, no datasocket available !
how can I do ?

[Jason F.]

You will need to program with a 3rd party API like Microsofts WinSock2 library. This may require research on your part (depending on whether you use a ready-made OPC API, or just a general TCP/IP facility like WinSock2) regarding the specifications of the OPC protocol. You can find definitive information on OPC at the OPC Foundation's website: http://www.opcfoundation.org/

Jason F.
Applications Engineer
National Instruments
www.ni.com/ask