dsc module

[RS7]

I am trying to connect Labview to a Modbus client via the OPC Servers module

I am using modbus to 2 devices, both of which have their data being read appropriately by the OPC Quick Client

I am running "Browse To OPC Item.vi" from the examples directory in C:\Program Files (x86)\National Instruments\LabVIEW 8.5\examples\comm\opc.llb

When I don;t run the quick client, nothing is found

When I run the Quick OPC Client, several National Intruments.xxx servers are found under Computer on the pop-up window

If I access OPCDemo, all is OK

When I try to access NIOPCServers, I get

The connection to the server failes!:

error code - 0x80040112

Clas is not licensed for use use

The error is unspecified

Check to make sure the server is properly installed and all security settings are correct

I have the DSC module installed OK, the OPC is installed OK, and is running, does Labview have to be informed of its license, or is there some other problem here?

[Van_L]

Hi RS7,

Only DSC and Shared Variables (not DataSocket or Server Explorer) could connect to the "NI OPC Servers"

NI OPC servers will only accept client connections from LabVIEW DSC 8.5 and later, including the NI OPC Quick Client. For example, you can't connect to NI OPC servers using Server Explorer or DataSockets since these are different clients.

Hope this helps