NI Server Explorer Attempts to Start When a 3rd Party OPC Server is Referenced

[Bernie W]

I am using Labview with a third party (Siemens) OPC server.

On one PC the Labview application (which uses a data socket to read OPC items from the Siemens OPC server) works without any problem.

On another PC the same Labview application opens a window/dialog looking for the NI Server Explorer.  It does not find it and leaves the PC in a endless loop while I try to cancel.

I can not understand why one PC is behaving differently from the other?

Both PCs are running the same Windows XP operating system, both are running the same Siemen's OPC server, but are running the same Labview application.

How can I troubleshoot this issue?

I have attached the Labview application for reference.

Thanks,
Bernie

[Doug M]

Bernie,

That seems like strange behavior.  Does NI Server Explorer exist on the machine that seems to be looking for it?  Can you post a screenshot of the dialog that shows the application is trying to find the Server Explorer? If Server Explorer is present, are there any configured groups that are looking for that particular OPC Server? If so, disable them. Is it possible the OPC item names are not present on the machine that isn't working?

[chrisger]

hi there,

please compare the settings of all NI-related services and check for firewalls on both machines.

btw.: if you have LV >6.1 i suggest o use the DataSocket functions. this should improve performance of your app a lot (see attachment. not tested!!). can you see the url defined in the vi when you open the URL-Browser "DataSocket Select URL.vi"?