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ErrorLib — Industrial Fault Code Library

Disclaimer: ErrorLib is an independent technical reference tool. While we aim for accuracy, always verify with the manufacturer’s official service manuals before performing maintenance on industrial equipment. ErrorLib is not affiliated with the brands listed.

08120000 hex

External Encoder Status Error 4

Omron · NJ/NX-series Machine Automation Controller

What does 08120000 hex mean?

Bit 04 of the external encoder error code (ALMC) was set to 1, indicating a specific status or fault condition from the external encoder. Diagnosis requires consulting the encoder's dedicated manual.

Common Causes

  • Bit 04 of the external encoder error code (ALMC) was set to 1.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Consult the external encoder's specific manual for the meaning of ALMC Bit 04 and corresponding troubleshooting steps.

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

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Source: Omron NJ/NX-series Machine Automation Controller
Open Manual (Page 263)Search more codes in this manual