Omron · NJ/NX-series Machine Automation Controller
An error occurred in the non-volatile memory hardware, which stores critical system data. This can be a physical failure or a false detection caused by excessive noise during data reads, impacting stored parameters.
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Cycle the power supply to the Controller to attempt a reset.
Implement noise countermeasures on relevant system lines if excessive noise is a concern.
If the error persists after noise mitigation, consider replacement of the Unit.