We seem to have solved the ATS issue. We have an AW51B with an SBUS card (serial) that talks to an ABB system. This AW also happens to be using a DNBX. The transceiver for the DNBX was bad, although it was working to the point that the box was good in sysmon and really never showed any sighs of having any issues. We had Foxboro login numerous time and collect traffic and counter data but never could catch anything. Foxboro service connected Wireshark to the nodebus and collected data for Foxboro Support Line but have not received any answers. From a customer stand point it seems like we are not able to troubleshoot nodebus or MESH side errors. Only dumb luck and trial an error found this issue. Anyone have any thoughts on this or recommend some good troubleshooting tools? Thanks, Brian Long Arkansas Kraft _______________________________________________________________________ This mailing list is neither sponsored nor endorsed by Invensys Process Systems (formerly The Foxboro Company). Use the info you obtain here at your own risks. Read http://www.thecassandraproject.org/disclaimer.html foxboro mailing list: //www.freelists.org/list/foxboro to subscribe: mailto:foxboro-request@xxxxxxxxxxxxx?subject=join to unsubscribe: mailto:foxboro-request@xxxxxxxxxxxxx?subject=leave