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
ControlNet issue-Event Log Help Please
- Thread starter kbradray
- Start date
dmargineau
Lifetime Supporting Member
Certainly not after the fact; CNet bridges do not have any non-volatile memory "storage" for event recording.
You could use the Online RSNetWorx for ControlNet file Diagnostic View while the fault is present and determine what kind of error is present and what node(s) seems to be the culprit.
You could also automatically log each CPU's "unusual activity" onto the eventual on-board CompactFlash media via user implemented programming or Detect a (user configurable) Change within the controller.
Refer to Chapters 3 and 4 of:
http://literature.rockwellautomation.com/idc/groups/literature/documents/pm/1756-pm015_-en-p.pdf
You could use the Online RSNetWorx for ControlNet file Diagnostic View while the fault is present and determine what kind of error is present and what node(s) seems to be the culprit.
You could also automatically log each CPU's "unusual activity" onto the eventual on-board CompactFlash media via user implemented programming or Detect a (user configurable) Change within the controller.
Refer to Chapters 3 and 4 of:
http://literature.rockwellautomation.com/idc/groups/literature/documents/pm/1756-pm015_-en-p.pdf
Similar Topics
Hey everyone, looking for advice in this particular scenario.
Currently we have a controlnet bus that has (6) CN2DN devices and (2) powerflex...
I'm having an issue with a set of Produced / Consumed tags that I can't seem to figure out. I keep getting the error code 16#031f, Connection...
I'm using this Panelview 550 a 2711-B5A15 Ser. F REV.L FRN. 4.20
when I look at it's Property in RSLogix 5000 version 13 it comes up as having...
Does anyone have the demo version of this that they have used successfully?
My issue is the demo version states you can only use addresses of...
Hi , i have an controlnet network of around 15 devices(CLX and flex) with 2 Workstations connected to network using PCIC card . Some how one of...