Moxa Technologies C168P User Manual download pdf (Page 65)

Connection Option (Opt8x) and Cable Wiring

C168P User’s Manual 5-9

The followings are operation modes for RS-422:

RS-422 Point-to-point RS-422 Broadcasting

Opt8J/F/Z RS-422 Device Opt8J/F/Z RS-422 Device 1

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

16 TxD-(A) RxD-(A) 2 RxD+(B) TxD+(B)

2 RxD+(B) TxD+(B) 16 TxD-(A) RxD-(A)

14 RxD-(A) TxD-(A) 14 RxD-(A) TxD-(A)

7 GND GND 7 GND GND

RS-422 Device N

RxD+(B)

TxD+(B)

RxD-(A)

TxD-(A)

GND

Opt8J RS-422 with Handshaking

Opt8J RS-422 Device

3 TxD+(B) RxD+(B)

16 TxD-(A) RxD-(A)

2 RxD+(B) TxD+(B)

14 RxD-(A) TxD-(A)

7 GND GND

5 RTS+(B) CTS+(B)

13 RTS-(A) CTS-(A)

4 CTS+(B) RTS+(B)

19 CTS-(A) RTS-(A)

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