Moxa Technologies user manual DB-37 Connector Pin Outs, For RS-422 Mode, For RS-485 Mode

Connection Cable and Cable Wiring

DB-37 Connector Pin Outs

The following lists pin assignment of the Industio CI-134 Series DB37 connector on the bracket.

For RS-422 Mode

Pin no.	Signal	Pin no.	Signal
1		20	CTS2-(A)
2	TxD2-(A)	21	RxD2-(A)
3	GND/VEE2	22	RTS2-(A)
4	CTS2+(B)	23	RTS2+(B)
5	TxD2+(B)	24	RxD2+(B)
6	CTS3-(A)	25	TxD3-(A)
7	RxD3-(A)	26	GND/VEE3
8	RTS3-(A)	27	CTS3+(B)
9	RTS3+(B)	28	TxD3+(B)
10	RxD3+(B)	29	CTS1-(A)
11	TxD1-(A)	30	RxD1-(A)
12	GND/VEE1	31	RTS1-(A)
13	CTS1+(B)	32	RTS1+(B)
14	TxD1+(B)	33	RxD1+(B)
15	CTS0-(A)	34	TxD0-(A)
16	RxD0-(A)	35	GND/VEE0
17	RTS0-(A)	36	CTS0+(B)
18	RTS0+(B)	37	TxD0+(B)
19	RxD0+(B)

Note: Make shield grounded to connector.

For RS-485 Mode

Pin no.	Signal	Pin no.	Signal
2	Data2-(A)	25	Data3-(A)
3	GND/VEE2	26	GND/VEE3
5	Data2+(B)	28	Data3+(B)
11	Data1-(A)	34	Data0-(A)
12	GND/VEE1	35	GND/VEE0
14	Data1+(B)	37	Data0+(B)

Note: Make shield grounded to connector.

Industio CI-134 Series User’s Manual 5-5