Moxa Technologies UPort 1250, User Manual

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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
3 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)
5 GND GND 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.