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Connection Cables and Cable Wiring
RS-422
DB9 DB25
Pin No. Signal
Pin No. Signal
1 TxD-(A) 3 RxD+(B)
2 TxD+(B) 2 TxD+(B)
3 RxD+(B) 4 RTS+(B)
4 RxD-(A) 5 CTS+(B)
5 GND 7 GND
6 RTS-(A) 22 CTS-(A)
7 RTS+(B) 8 RxD-(A)
8 CTS+(B) 20 TxD-(A)
9 CTS-(A)
6 RTS-(A)
RS-485 (4-wire)
DB9 DB25
Pin No. Signal
Pin No. Signal
1 TxD-(A) 3 RxD+(B)
2 TxD+(B) 2 TxD+(B)
3 RxD+(B) 7 GND
4 RxD-(A) 8 RxD-(A)
5 GND 20 TxD-(A)
Industio CP-134U Series User’s Manual
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