I left my Pi running for the weekend, when I came back everything was working (input and output LEDs flashing). But when I loaded my browser to view webvisu, it crashed. Webvisu got stuck on the loading page and my I/O LEDs stopped blinking. When I opened CODESYS dev I could log in but could not start the app.

I got:
error: CmpVisuHandler: ExternId=17487 removed due to timeout
component: CmpVisuHandler

and then:
error: watchdog for opmode expired. Address: 1005
component: IoDrvEtherCAT (my test rig is running etherCAT)

Any idea of what went wrong? It would be really nice to be able to run the Pi for a long time and just check up on it once a while.

Another thing I noticed was that my error messages had the wrong date and time, is there a setting for that? Both my Pi and my dev computer have the right time settings.

Hi,
in case of seeing the error please check
cat /tmp/codesyscontrol.log
this give sometimes more Information.

BR
Edwin

Thank you for your tip, have you ever seen anything like this before?

Everything else is stable and ok.

Hi,
no never seen... I mean i have seen crashes, but usually you see the exception in the plc log.

BR
Edwin