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.

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Verified technical data. Last updated: March 2026

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Source: Omron NJ/NX-series Machine Automation Controller