Moxa Technologies CP-118EL Pin, Pin, Pin, Pin, Pin, Pin, Pin, Pin, Pin, Signal, Signal, Signal, Signal, Signal, Signal, Signal, Signal, RS-232, RS-422, 2-wire RS-485, 2-wire RS-485

PCI Express Board User’s ManualPin AssignmentsRS-422 and 4-wire RS-485

Pin	Signal	Pin	Signal	Pin	Signal	Pin	Signal
1	TxD6+(B)	18	TxD2+(B)	35	TxD7+(B)	52	TxD3+(B)
5	TxD6-(A)	22	TxD2-(A)	39	TxD7-(A)	56	TxD3-(A)
6	RxD6-(A)	23	RxD2-(A)	40	RxD7-(A)	57	RxD3-(A)
8	RxD6+(B)	25	RxD2+(B)	42	RxD7+(B)	59	RxD3+(B)
9	GND	26	GND	43	GND	60	GND
10	RxD4+(B)	27	RxD0+(B)	44	RxD5+(B)	61	RxD1+(B)
12	RxD4-(A)	29	RxD0-(A)	46	RxD5-(A)	63	RxD1-(A)
13	TxD4-(A)	30	TxD0-(A)	47	TxD5-(A)	64	TxD1-(A)
17	TxD4+(B)	34	TxD0+(B)	51	TxD5+(B)	68	TxD1+(B)

2-wire RS-485

Pin	Signal	Pin	Signal	Pin	Signal	Pin	Signal
6	D6-(A)	23	D2-(A)	40	D7-(A)	57	D3-(A)
8	D6+(B)	25	D2+(B)	42	D7+(B)	59	D3+(B)
9	GND	26	GND	43	GND	60	GND
10	D4+(B)	27	D0+(B)	44	D5+(B)	61	D1+(B)
12	D4-(A)	29	D0-(A)	46	D5-(A)	63	D1-(A)

Device Side Pin Assignments

Male DB9 (OPT8D+/OPT8-M9+)

		1	5
		6	9
Pin	RS-232	RS-422 /		2-wire RS-485
		4-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	---		---	---

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