We are running ignition 8.0.7 with various Allen Bradley PLCs version 28 and version 32. We have random devices dropping with tags that go bad. Browsing the OPC-UA server we see that there are no tags available from that device:
However in the device status it still shows as connected:
We have to manually disable and re-enable the device for it to come back.
Every day a different PLC will fail in this way. I’ve spoke to a few of my colleagues and they have witnessed this behaviour at other plants, but usually only after a server restart. We have not restarted our server for over a week, but everyday we lose a device.
I’ll call support this afternoon, but just wondered if anyone else has experienced this.