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ErrorLib — Industrial Fault Code Library

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08090000 hex

Encoder Communications Error

Omron · NJ/NX-series Machine Automation Controller

What does 08090000 hex mean?

A communication error has occurred with the encoder, indicating an issue with data transmission or receipt. This can be caused by low power supply to the encoder or electrical interference (noise).

Common Causes

  • The power supply voltage of the encoder is low.
  • Noise affecting communication signals.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Measure the power supply voltage supplied to the encoder and ensure it is within specifications.

  2. 2

    Implement noise countermeasures on the encoder cable and power supply lines.

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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