247A0000

Number of Distributed Sensor Unit Verify Error

Omron · NJ/NX-series Machine Automation Controller

What does 247A0000 mean?

During power-up, the system detected a reduction in the number of Distributed Sensor Units compared to the expected configuration. This typically means one or more distributed sensor units are no longer connected or operational.

Common Causes

  • Distributed Sensor Unit is disconnected

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Inspect all cabling connecting the Omron NJ/NX Controller to the distributed sensor units for damage, proper seating, and loose connections.

  2. 2

    Verify the supply voltage at the power input terminals of each distributed sensor unit meets the specified operating range.

  3. 3

    Check the status indicators (LEDs) on each individual distributed sensor unit for any error codes or abnormal states.

  4. 4

    Confirm the number and configured IDs of distributed sensor units in the Omron Sysmac Studio project precisely match the physically installed units.

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Verified technical data. Last updated: March 2026

Related Faults

Source: Omron NJ/NX-series Machine Automation Controller