Moxa UPort 1250I [50/50] Serial port pin assignments

3. Serial Port Pin Assignments

The UPort 1250/1250I have 2 RS-232/422/485 ports, the UPort 1410 has 4 RS-232 ports, the UPort

1450/1450I have 4 RS-232/422/485 ports, the UPort 1610-8/1610-16 have 8 or 16 RS-232 ports, and the

UPort 1650-8/1650-16 has 8/16 RS-232/422/485 ports.

DB9 Male RS-232 Port

UPort 1410/1610-8/1610-16

Pin RS-232

1 DCD

2 RxD

TxD

4 DTR

5 GND

6 DSR

7 RTS

8 CTS

DB9 Male RS-232/422/485 Port

UPort 1250/1250I/1450/1450I/1650-8/1650-16

Pin RS-232

RS-422/

4-wire RS-485

2-wire RS-485

1 DCD TxD-(A) –

2 RxD TxD+(B) –

3 TxD RxD+(B) Data+(B)

4 DTR RxD-(A) Data-(A)

GND

6 DSR – –

7 RTS – –

8 CTS – –

Mini DB9F-to-TB* for RS-422/485 wiring

*An adapter is included with the UPort 1250, 1250I, 1450, 1450I, 1650-8, and 1650-16.