Omron · NJ/NX-series Machine Automation Controller
This error indicates that communication could not be established with a sensor, often because the sensor is not connected to the system. This prevents initial data exchange and operation.
Click steps to track your progress.
Inspect the sensor's physical connection to the I/O module or interface for proper seating and secure termination.
Verify the specified supply voltage at the sensor's power input terminals using a multimeter.
Check the sensor cable wiring against the schematic for correct pin assignments and polarity at both the sensor and controller ends.
Observe the sensor's status indicator LEDs (if present) for power and communication activity.
Verify the sensor's I/O channel configuration and addressing parameters within the Omron NJ/NX controller's Sysmac Studio project.