Advantech IPPC-9150, IPPC-9120 user manual 17 COM2

C.17 COM2

		1	2	3	4	5
			6	7	8	9
Table C-20: COM2
Pin	Signal
	RS-232	RS-422				RS-485
1	DCD	TX-				DATA-
2	RX	TX+				DATA+
3	TX	RX+				---
4	DTR	RX-				---
5	GND	GND				---
6	DSR	---				---
7	RTS	---				---
8	CTS	---				---
9	RI	---				---

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