084D0000 hex

Non-volatile Memory Hardware Error

Omron · NJ/NX-series Machine Automation Controller

What does 084D0000 hex mean?

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.

Common Causes

  • False detection due to a data read error that was caused by excessive noise.
  • Non-volatile memory failure.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Cycle the power supply to the Controller to attempt a reset.

  2. 2

    Implement noise countermeasures on relevant system lines if excessive noise is a concern.

  3. 3

    If the error persists after noise mitigation, consider replacement of the Unit.

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Verified technical data. Last updated: March 2026

Related Faults

Source: Omron NJ/NX-series Machine Automation Controller