Hi William!
Please always make sure you use the latest HWD file for your unit, for DM430 v120. There was a fix in v110 for; "In some cases the DM430E was generating error frames on the CAN bus, this got fixed by using higher number of Time Quanta." reading the Revision history. If you're not using v110 or later please update your application, compile and download again before testing.
Best regards
Nilla
PLUS+1 Helpdesk team