Omron · NJ/NX-series Machine Automation Controller
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.
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Inspect all cabling connecting the Omron NJ/NX Controller to the distributed sensor units for damage, proper seating, and loose connections.
Verify the supply voltage at the power input terminals of each distributed sensor unit meets the specified operating range.
Check the status indicators (LEDs) on each individual distributed sensor unit for any error codes or abnormal states.
Confirm the number and configured IDs of distributed sensor units in the Omron Sysmac Studio project precisely match the physically installed units.