You are correct, this is a problem with the target OPC server. I was able to establish a connection to a different OPC server indicating there is no problem with the OPCLabs driver or installation, and I reproduced the same behavior from a different OPC Client.

I realize that OPCLbas therefore is not at fault in this issue, but we are at a loss as to how to troubleshoot, so I would appreciate any further input you have.

I am able to talk to the malfunctioning OPC Server using the OPCLabs driver running in a process on that machine (and this process is 64-bit whereas RSLinx is 32-bit which, from our discussions before, means that it is in essence establishing a 'remote' connection if I understood correctly).

Do you have any suggestions? (I take it running the connection through OPC Analyzer wouldn't work since OPC Analyzer is unlikely to be able to establish a connection to the malfunctioning OPC Server either).

Thanks,

Shea

The error is reported reported a notification (ItemChanged). Does this indicate a problem with the target OPC server?

Thanks,

Shea

I am getting the exception "the service did not respond to the start or control request in a timely fashion" when trying to subscribe to tags.

I don't believe this is a problem with QuickOPC as everything was working correctly prior to the server being rebooted. However, I am at a loss as to how to go about troubleshooting this.

Do you have any suggestions?

Thanks,

Shea