Topic Monitoring? [WebWare SDK]

blake

We have a VB program utilizing OPC to talk to our S4 controller.  I'm trying to find a way to monitor the OPC tags to the robot.  It's running on Win2K.  I looked in the variable subscriptions for our robot in the Device Config software, but found nothing in the subscription list.  This left me with nowhere to start. 

PerSvensson

Hi
You need to define yourself (in DCU) what variables to monitor.

blake

Gotcha.  However, the VB program is using something to talk to the robot.  Shouldn't I see those topics already defined in DCU?

RussD

Your app is talking to the S4 OPC Server Interface in Interlink.

There are some built-in OPC tags in the interface that are exposed to any OPC browser for things like Controller State, Program State, Boot Version, etc. that are common to every robot. You cannot change or configure these built-in tags. You must create subscriptions for any of your own data that you want to see from an OPC client.

blake

"Your app is talking to the S4 OPC Server Interface in Interlink"

Any way to see those topics being used because I don't see any subscriptions already defined in DCU? 

RussD

Any OPC Client that supports browsing will show you all of the built-in tags for S4 OPC Server. An easy to use one that is freely available is OPC Quick Client, available as part of the KepServerEx OPC Server from Kepware.