We communicate from the enterprise side to our process PLCs (CTLogix) via ethernet. All of our peer to peer communications between PLCs is via controlnet. We had an issue last night where we lost comms between two PLCs and caused several issues. No one at the plant can tell me anything other than the fact that they re-seated the CNB. Is there a way to go into the CNBs and take a look at the error log in each CNB? Thanks