04C40000 hex

Sensor Communications Error

Omron · NJ/NX-series Machine Automation Controller

What does 04C40000 hex mean?

This error indicates a problem in the connection to a sensor, leading to a disruption in communications. It implies a physical connection issue or a fault in the sensor itself, affecting data exchange within the E3X-series Fiber Sensor system.

Common Causes

  • The Sensor is disconnected.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Verify the physical connection of the sensor cable.

  2. 2

    Ensure the sensor cable is securely terminated at both ends.

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Verified technical data. Last updated: March 2026

Related Faults

Source: Omron NJ/NX-series Machine Automation Controller