Checking Errors In The Cpu Module - Mitsubishi Electric MELSEC Q Series Quick Start Manual

 Checking errors in the CPU module
If a problem occurs, errors can be checked by diagnosing the programmable controller CPU in GX
Developer.
Operating procedure
PLC Diagnostics screen (example)
Help screen (example)
30
1 Select [Diagnostics]
[PLC diagnostics].
(Present Error)
2 Click the button.
(Error log)
2 Click the button.
Current errors and corrective
actions are displayed.