– Ignition 7.5.3 (b1163) on Windows Server 2008 R2 Enterprise –
At random intervals between 2s and 1hr, I’m getting the following warning message at the gateway system console:
[WARN] 10:09:58 AM drivers.ControlLogixDriver[Device name].BasicRequestCycle.TimeoutDaemon ScheduledRequest[[ABControlLogixReadRequest]] request with key “<4/5-digit number>” failed due to timeout.
It’s only the one PLC, and the device always shows as connected and otherwise fine in Ignition and in production. I’ve gone through diagnostics and logs at the PLC, PLC network adapter (here an A-B EN2T/B), and network switches and can’t find anything amiss, overloaded, etc.
Any suggestions on where else to look for a diagnosis?