Hi Erwin
I just spotted a small bug in the plugin.
In this packet, our controller has sent a GET:SUB_DEVICE_REPORT_THRESHOLD to Subdevice 0, and the responder as responded with a NACK: Reason 0x0009 (SubDevice out of range) - the allowed range is 0x0001-0x0200.
Wireshark has correctly determined the PDL of the Nack_Response packet as 2, but only takes the first byte before moving on to validate the checksum using the second half of the response.
Hopefully a quick easy fix for you?
Peter