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ErrorLib — Industrial Fault Code Library

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08430000 hex

1-rotation Counter Error

Omron · NJ/NX-series Machine Automation Controller

What does 08430000 hex mean?

The encoder detected a one-rotation counter error. This implies an issue with the encoder's ability to accurately count single rotations, affecting position feedback.

Common Causes

  • There is excessive noise
  • Failure due to vibration, impact, condensation, foreign matter, etc.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Measure the supply voltage at the encoder input terminals to verify it is within the specified nominal range.

  2. 2

    Inspect the entire encoder cable for physical damage, proper shielding, and ensure all connections at the encoder and the Omron NJ/NX controller are secure and correctly terminated.

  3. 3

    Check the mechanical mounting of the encoder to the rotating shaft for any looseness, slippage, or excessive vibration that could affect rotational accuracy.

  4. 4

    Verify the encoder's configuration parameters (e.g., resolution, counting mode, signal type) within the Omron NJ/NX Controller match the specifications of the installed encoder.

Browse all codes in this manual (96)
Verified technical data. Last updated: April 2026

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04A10000Non-volatile Memory Hardware Error04A10000 hexNon-volatile Memory Hardware Error04AC0000 hexOvercurrent
Source: Omron NJ/NX-series Machine Automation Controller
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