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ErrorLib — Industrial Fault Code Library

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08170000 hex

Encoder Data Restoration Error

Omron · NJ/NX-series Machine Automation Controller

What does 08170000 hex mean?

Initialization of internal position data was not processed correctly in Semi-closed Control Mode and Absolute Value Mode. This implies a failure to correctly establish the encoder's initial position, affecting control accuracy.

Common Causes

  • There is insufficient power supply voltage for the encoder.
  • Noise is entering on the encoder line.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Inspect all encoder cable connections at both the absolute encoder and the Omron NJ/NX controller for looseness, damage, or incorrect pinout.

  2. 2

    Measure the supply voltage at the absolute encoder input terminals to confirm it meets the encoder manufacturer's specifications.

  3. 3

    Verify the absolute encoder parameters and settings within the Omron NJ/NX controller, including encoder type, resolution, and absolute position initialization method, against the machine's configuration documentation.

  4. 4

    Check for any signs of electrical noise or interference affecting the encoder signal cable, especially in proximity to power cables or inductive loads.

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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