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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)
15
69
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
--- --- ---