Sensor Communications Error

What does 04C40000 mean?

An error occurred in an active sensor connection, signifying that a sensor has become disconnected or communication has been interrupted. This prevents the system from receiving data from the affected sensor.

• Sensor cable disconnected
• Sensor connection faulty

Click steps to track your progress.

1. 1

   Verify the nominal supply voltage at the affected sensor's power input terminals.

2. 2

   Inspect all cabling connected to the affected sensor for physical damage, loose connections, or improper termination at both the sensor and the I/O module/controller.

3. 3

   Check the status indicators (LEDs) on the relevant I/O module or network coupler for the affected sensor within the Omron NJ/NX system for any error or communication loss indications.

4. 4

   Using Omron Sysmac Studio software, verify the I/O communication status, device diagnostics, and error logs for the specific sensor or I/O point reporting the error.