OPC Client ONLY for LabVIEW available outside DSC module?

[FM Kautz]

I need to communicate with a Modbus TCP I/O device from Advantech. An OPC server for this device is available. I need the OPC Client for LabVIEW without the additional functions and $$ in the Datalogging & Supervisory Control Module.

[Jochen]

In LabVIEW there are two simple ways to communicate with OPC servers:

1. Front Panel connections:
Since LabVIEW 6i you can right click on a control on the front panel and choose "Data Operations" -> "DataSocket Connections" and click on the Browse button -> "Browse Measurment data".
Now you can select an item from a list of OPC servers that are installed on your system to connect your control to.

2. If you need more control about the OPC connections you can use the DataSocket functions in the communications palette. There are also some examples in the LabVIEW\examples\comm folder for OPC communication using these functions.

Note that for high channel count applications (several hundred to several thousand items) the DSC module is the much better solution
in terms of performance and the time you need to develop your application.

Regards,

Jochen Klier
Applications Engineering Group Leader
National Instruments GErmany GMbH