When errors occur in CODESYS on any of our devices or information about our devices is available, it is logged in the /var/opt/codesys/codesyscontrol.log file.

For CODESYS Control for Raspberry Pi MC SL up to version V4.8.0.0, the errors and information are logged in the /tmp/codesyscontrol.log file.

This is how you can view the file:

  • Double-click in the CODESYS device tree on the root device.
  • Click on the “Log” tab.
  • Use the component filter as “IoDrvRevPiBridge”.

This will show only specific messages from the Revolution Pi I/O driver.

The piControl component displays the kernel log for the piControl kernel module, which is responsible for managing the configured RevPi system.