Connection Option (Opt8x) and Cable Wiring

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

3

TxD+(B)

 

 

RxD+(B)

3

TxD+(B)

16

TxD-(A)

 

 

RxD-(A)

2

RxD+(B)

 

2

RxD+(B)

 

 

TxD+(B)

16

TxD-(A)

 

 

14

RxD-(A)

 

 

TxD-(A)

14

RxD-(A)

 

 

7

GND

 

 

 

GND

7

GND

 

 

 

RS-422 Device 1

RxD+(B)

TxD+(B)

RxD-(A)

TxD-(A)

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)

Smartio C168H/HS User’s Manual 5-9

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Moxa Technologies C168HS user manual Followings are operation modes for RS-422