I’m using some kind of proprietary OPC tunneling software provided by the manufacturer to talk to several of their machines. The software connects to each machine’s OPC-DA server remotely and then creates a local OPC-UA server on the same server as Ignition for each, which Ignition (v8.0.15) is then connected to.
The connections work fine until something causes them to fault, usually because a machine is turned off. However, once the connection is re-established, the status changes back to “Connected” on the OPC Connections page of the Ignition gateway but the tags stay on bad quality with unknown values. I’m also able to browse the tags in the OPC-UA software itself and via a separate OPC client installed on the same server, which leads me to think that the problem is with Ignition.
I’m sometimes able to get it working again by disabling the OPC connection in the gateway and then re-enabling it, but not always.
Any ideas on how to fix this?