Hey all.
Filling line here. ControlLogix 1756-L75, one 1756-EN2T in slot 1, Studio 5000 v33. Ever since the historian went in last month the FactoryTalk View SE clients show stale tags and the operators get a comms error on the fill station display.
The EN2T webpage, Diagnostic Overview, has the CPU sat at about 100 percent and connections current 118. I think the limit is 128. Talking to that module there's four SE clients, the SE server, the historian, a Kepware box IT use, and three other controllers doing MSG reads into this one.
I/O never drops. I rebuilt the RSLinx Enterprise shortcut and rebooted the EN2T on Sunday and it was back at 100 percent inside an hour. Is the EN2T failing, or is 118 just too many? And if 118 is too many, what comes off first, the Kepware box or the MSG reads from the other three controllers?
What's the historian polling at, and how many tags did it add? Same question for the Kepware box, poll rate and tag count. Before we blame the module I want to know what the new load actually is. And those three MSGs from the other controllers, are they cached?