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A.2 RS-232/485 Serial Port (COM1~COM4)
A.3 RS-485 Serial Port (COM5~COM8, UNO-1140F/FH)
The S-GND is for Shielding Ground
Table A.2: RS-232/485 Serial Port Pin Assignments
Pin RS/232 RS-485
1 DCD DATA-
2 RxD DATA+
3TxD NC
4DTR NC
5GND GND
6DSR NC
7RTS NC
8CTS NC
9RI NC
