Both the onboard Ethernet port on a Do-More and EBC's support both Modbus/TCP and ERM/EBC mode.
Since ERM/EBC mode allows native-mode addressing and doesn't require any ladder logic for interlocking, etc., I assume that's the preferred mode for 205, 405, and Terminator remote I/O?
If so, are there any limitations to that mode which would force you to use Modbus/TCP in specific scenarios as a workaround?