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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.

080B0000 hex

Safety Input Error

Omron · NJ/NX-series Machine Automation Controller

What does 080B0000 hex mean?

At least one of the input photocouplers for safety inputs 1 and 2 has turned OFF, indicating a potential safety circuit issue. This implies a broken or disconnected safety cable affecting the safety interlock.

Common Causes

  • The cable is disconnected or broken.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Inspect the safety input cables (safety inputs 1 and 2) for disconnection or physical damage.

  2. 2

    Verify continuity of the safety input cables using a multimeter.

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
Open Manual (Page 263)Search more codes in this manual