04C50000 hex

Sensor Communications Has Not Been Established

Omron · NJ/NX-series Machine Automation Controller

What does 04C50000 hex mean?

This fault indicates that the system failed to establish communication with a connected sensor. This can happen if a sensor is not present or if its connection is faulty, preventing initial data handshake within the E3X-series Fiber Sensor system.

Common Causes

  • A Sensor is not connected.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Verify that the sensor is physically connected to the system.

  2. 2

    Check the sensor cable for continuity and proper termination.

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Verified technical data. Last updated: March 2026

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Source: Omron NJ/NX-series Machine Automation Controller