Moxa Technologies CP-118U user manual Pin Assignments, Male DB9 Opt8-D/Opt8-M9, Male DB25 Opt8B/C

5. Pin Assignments

Male DB9 (Opt8-D/Opt8-M9)

15

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		---		---		---

Male DB25 (Opt8B/C)

114

1325

	Pin	RS-232	RS-422 /		2-wire RS-485
			4-wire RS-485
2		TxD	RxD+(B)		Data+(B)
3		RxD	TxD+(B)	---
4		RTS	---	---
5		CTS	---	---
6		DSR	---	---
7		GND	GND		GND
8		DCD	TxD-(A)	---
20		DTR	RxD-(A)		Data-(A)

Female DB25 (Opt8A/S)

131

2514

	Pin	RS-232			RS-422 /			2-wire RS-485
				4-wire RS-485
2		RxD			TxD+(B)		---
3		TxD			RxD+(B)			Data+(B)
4		CTS		---			---
5		RTS		---			---
6		DTR			RxD-(A)			Data-(A)
7		GND				GND		GND
8		DCD			TxD-(A)		---
20		DSR		---			---
RJ45 (Opt8-RJ45)
			1	8
	Pin	RS-232			RS-422 /			2-wire RS-485
				4-wire RS-485
1		DSR		---			---
2		RTS		---			---
3		GND				GND		GND
4		TxD			RxD+(B)			Data+(B)
5		RxD			TxD+(B)		---
6		DCD			TxD-(A)		---
7		CTS		---			---
8		DTR			RxD-(A)			Data-(A)

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