EL
ErrorLib
Brands
||
  1. Home
  2. Omron
  3. NJ/NX-series Machine Automation Controller
  4. 247A0000
About·Privacy·Terms

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.

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.

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 299)Search more codes in this manual