Specifications

Allen-Bradley ControlLogix Ethernet Driver Help

Read request for <count> element(s) starting at <tag address> on device

<device name> failed due to a framing error. Block deactivated.

Error Type:

Warning

Possible Cause:

A read request for tags <tag address> to <tag address>+<count> failed due to one of the following reasons:

1. Incorrect request service code.

2. Received more or less bytes than expected.

Solution:

If this error occurs frequently, there may be an issue with the cabling or the device itself. If the error occurs

frequently for a specific tag, contact Technical Support. Increasing the request attempts also gives the driver

more opportunities to recover from this error. In response to this error, <count> elements of the block are

deactivated and it is not processed again.

Unable to read <count> element(s) starting at <tag address> on device

<device name>. Block deactivated.

Error Type:

Warning

Possible Cause:

1. The Ethernet connection between the device and the host PC is broken.

2. The communication parameters for the Ethernet connection are incorrect.

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

Solution:

1. Verify the cabling between the PC and the device.

2. Verify that the correct port has been specified for the named device.

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

Note:

In response to this error, <count> elements of the block are deactivated and it is not processed again.

Unable to read <count> element(s) starting at <tag address> on 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 read request for the

specified tag.

Solution:

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