DaveM

I have package written and deployed to about a dozen machines. It communicates to a PLC through the NI OPC server. My issue is that this package doesn't work on some machines I deploy it on ... cannot connect to the OPC Server. I have stripped the app down to one indicator with its data socket field hard coded to a valid tag on the server - as simple as you can get. It works on all the machines that can talk to the OPC server and it doesn't connect on any of the other machines ... i.e. the DataSocket LED stays RED. I cannot figure out what the difference is between these machines (or, alternatively, what is on the OPC Server which causes it to see these machines differently (talk to some and refuse others)). I am the network admin here so I have looked at all the standard issues like firewalls and windows permissions. Any ideas would be appreciated. Dave