Hi, assuming you have the correct RS232 cable (as described in the Compendium section on "Commissioning with Drivemonitor"), then really, no parameter changes are necessary.
You can simply use the PMU (Drive Keypad) to determine what the settings are for the RS232 Baud rate:
P701 = (i.e. 6=9600, 7=19200, 8=38400)
Now set your Drivemonitor Baud rate to match using "Tools" - "ONLINE Settings" and modify your Baud rate if necessary. (NOTE: If you do change the Baud rate, then You MUST fully quit Drivemonitor and restart it or the Communications settings will remain UNCHANGED)
Then simply click on "File" - "Set up a USS ONLINE Connection . . . ." and perfrom the search.
You can then upload as described above once you are Online.