Omron · NX-series CPU Unit
A critical file required by the Controller, stored in non-volatile memory, is either missing or has become corrupted. This error is detected at power-on or during a Controller reset, leading to a major fault level that stops both the user program and Controller operation.
Click steps to track your progress.
Perform a Memory All Clear operation on the Controller and then download the project from Sysmac Studio.
Measure the incoming power supply voltage and frequency to the Controller. Ensure it consistently meets the specified rated voltage and frequency for stable operation.
If the error persists after performing memory clear and verifying power supply, replace the CPU Unit.