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Allen-Bradley ControlLogix Ethernet Driver Help

Possible Cause:

  • 1.

    The Ethernet connection between the device and the Host PC is broken.

  • 2.

    The communications parameters for the Ethernet connection are incorrect.

  • 3.

    The named device may have been assigned an incorrect IP address.

  • 4.

    When using the Serial Gateway device model, one or more devices has an incorrect serial port configuration.

  • 5.

    The response from the device took longer to receive than the amount of time specified in the "Request Timeout"

device setting.

Solution:

  • 1.

    Verify the cabling between the PC and the device.

  • 2.

    Verify that the correct port is specified for the named device.

  • 3.

    Verify that the IP address given to the named device matches that of the actual device.

  • 4.

    Verify that all devices have the correct serial port and system protocol configuration.

  • 5.

    Increase the Request Timeout setting so that the entire response can be handled.

Encapsulation error occurred during a request to device '<device name>'. [Encap. Error=<code>]

Error Type: Warning

Possible Cause:

The device returned an error within the Encapsulation portion of the Ethernet/IP packet during a request. All reads and writes within the request failed.

Solution:

The driver will attempt to recover from such an error. If the problem persists, contact Technical Support. This excludes error 0x02, which is device-related, not driver-related.

See Also: Encapsulation Error Codes

Error occurred during a request to device '<device name>'. [CIP Error=<code>, Ext. Error=<code>]

Error Type: Warning

Possible Cause:

The device returned an error within the CIP portion of the Ethernet/IP packet during a request. All reads and writes within the request failed.

Solution: The solution depends on the error code(s) returned.

See Also: CIP Error Codes

Frame received from device '<device name>' contains errors

Error Type: Warning

Possible Cause:

  • 1.

    The packets are misaligned due to connection and/or disconnection between the PC and device.

  • 2.

    There is bad cabling connecting the device that is causing noise.

Solution:

  • 1.

    Place the device on less noisy network.

  • 2.

    Increase the Request Timeout and/or Attempts.

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