Device Read Command Error (Encapsulation)
Omron · CS/CJ Series EtherNet/IP Driver
What does RHxx129 mean?
An error response was received by the system when attempting a device read command from the external device. This indicates a problem retrieving data from the external device, potentially affecting system monitoring or operation. The specific nature of the error may be detailed in the Encapsulation Error Code field.
Repair Steps & Checklist
Click steps to track your progress.
- 1
Inspect EtherNet/IP network cable connections at the Omron driver and the external device for physical integrity and secure seating.
- 2
Verify network link and activity status indicators on both the Omron EtherNet/IP unit and the external device.
- 3
Verify the configured IP address, subnet mask, and gateway settings for both the Omron EtherNet/IP driver and the external device for correctness.
- 4
Access the Omron CS/CJ Series PLC's EtherNet/IP driver diagnostic buffer or status registers to retrieve the specific Encapsulation Error Code.
- 5
Check the external device's own diagnostic logs or status screen for any internal errors, communication faults, or configuration issues preventing it from responding to read requests.