Beginning at 5:45 this morning, the event journal started recording numerous "ACN COMM" events concerning a variety of nodes. All nodes are wired copper to 24 port R100 switches. Every node experienced between 200 and 700 such events (e.g. "Switched to Secondary ACN" , "Device Connection Failure", etc.) I don't know if it's significant - the only nodes with no such events were 1420 WirelessHart gateways that come in over fiber to port1.1.
Within 30 minutes the board starting seeing their DeltaV Operate graphics DataLinks go to "&&&&&". Then the data would reappear after 5-20 seconds. One station was rebooted after the &&&&& lingered.
No diagnostics of note on the switches - only a couple "Port High Utilization" on the Secondary switch.
Another workstation that had a persistent "BAD" communications on its secondary was rebooted, which cleared that error. Since then the ACN events have stopped (knock on wood).
I have a case open with GSC . . . anyone seen this?
In reply to kathrynpate:
Kathy Pate
Toray Carbon Fibers America
Decatur, AL 35601
kathy.pate@toraycma.com