Initial Communication Command Error (Encapsulation)

What does RHxx128 mean?

The system received an error response during the initial communication command with the external device, indicating a failure to establish a connection. This issue can prevent data exchange and control operations between the display and the external device. The specific nature of the error may be detailed in the Encapsulation Error Code field.

Click steps to track your progress.

1. 1

   Inspect the Ethernet cable connecting the Omron EtherNet/IP module to the external device for damage, proper seating, and verify link/activity LEDs on both devices are active.

2. 2

   Verify the IP address, subnet mask, and gateway settings configured in the Omron EtherNet/IP module and the external device to ensure they are compatible and correctly assigned within the network.

3. 3

   Check that the external device is powered on and operational, and attempt to ping its configured IP address from a workstation on the same network to confirm basic network connectivity.

4. 4

   Verify the EtherNet/IP connection parameters (e.g., connection type, assembly instances, data sizes, RPI) within the Omron PLC's programming software for the specific external device configuration.