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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.

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.

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

Related Faults

04A10000Non-volatile Memory Hardware Error04A10000 hexNon-volatile Memory Hardware Error04AC0000 hexOvercurrent
Source: Omron NJ/NX-series Machine Automation Controller
Open Manual (Page 278)Search more codes in this manual