Moxa Technologies CP-118U - Manual (Page 73)

CP-118U User’s Manual Pin Assignments
5-3
2-wire RS-485
Port Number
Signal 0 1 2 3 4 5 6 7
Data+(B) 1 25 6 30 33 14 38 41
Data-(A) 2 26 7 31 34 15 39 42
GND 32, 40, 45, 50, 55, 58
Pin Number
Device Side Pin Assignments
Male DB9 (Opt8-D/Opt8-M9)
1 5
6 9
Pin RS-232
RS-422 /
4-wire RS-485
2-wire RS-485
1 DCD TxD-(A) ---
2 RxD TxD+(B) ---
3 TxD RxD+(B) Data+(B)
4 DTR RxD-(A) Data-(A)
5 GND GND GND
6 DSR --- ---
7 RTS --- ---
8 CTS --- ---
9 --- --- ---