It would be really great if we could use RS485 'directly' with iTach Flex, saving us some work and space if we didn't have to use RS232-RS485 converters.
I guess a new tri-port RS485 interface/converter cable would be necessary for that.
Basic 2 or 3 wire RS485 would be enough. 5 wire (full duplex) RS485 (or optionally 2 RS485 interfaces) would be even better.