Initial Communication Command Error (CIP)

What does RHxx131 mean?

The system received an error response during the initial communication command with the external device, specifically related to the CIP protocol. This indicates a failure to establish a CIP-based connection, preventing data exchange and control operations. The specific nature of the error may be detailed in the CIP Error Code field.

Click steps to track your progress.

1. 1

   Inspect the physical Ethernet cable connecting the Omron EtherNet/IP driver to the network switch or external device for damage, proper seating, and correct pinout. Verify link and activity LEDs on both the Omron port and the external device's port.

2. 2

   Verify the IP address, subnet mask, and gateway settings configured in the Omron EtherNet/IP driver and the external device to ensure they are on the same network segment and correctly configured, checking for any duplicate IP addresses.

3. 3

   Check that the external device is powered on, fully initialized, and its EtherNet/IP server or adapter is active and configured to accept CIP connections.

4. 4

   Inspect the EtherNet/IP communication settings within the Omron PLC's programming software (e.g., target device IP, CIP connection parameters, RPI) for the specific external device, ensuring they match the external device's specifications.

5. 5

   Consult the detailed diagnostic logs or the 'CIP Error Code field' provided by the Omron PLC and/or the external device for additional specific error information regarding the failed initial communication attempt.