User`s manual

CP-134U Series User’s Manual Connection Cables and Cable Wiring

5-5

RS-485 (4-wire)

DB9 DB25

Pin No. Signal

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

2 TxD+(B) 3 TxD+(B)

3 RxD+(B) 7 GND

4 RxD-(A) 20 RxD-(A)

5 GND 8 TxD-(A)

RS-485 (2-wire)

DB9 DB25

Pin No. Signal

4 Data-(A) 2 Data+(B)

3 Data+(B) 7 GND

5 GND 20 Data-(A)