IBM CI5VGM Series user manual J6 COM1 Serial Port, J7 COM2 Serial Port, R2-422

Chapter 2 Installations

J6: COM1 Serial Port

	Pin #		Signal Name
	1	DCD, Data carrier detect
	2	RXD, Receive data
	3	TXD, Transmit data
	4	DTR, Data terminal ready
J6	5		GND, ground
	6	DSR, Data set ready
	7	RTS, Request to send
	8	CTS, Clear to send
	9		RI, Ring indicator
	10		NC

J7: COM2 Serial Port

J7, a 10-pin header connector , is the onboard COM2 serial port of the CI5VGM and is configurable as RS-232, RS-422 or RS-485. The following table shows its pin assignments.

	Pin #		Signal Name
		RS-232	R2-422		RS-485
.	1	DCD		TX-	DATA-
	2	RX		TX+	DATA+
	3	TX		RX+	NC
	4	DTR		RX	NC
J7	5	GND		GND	GND
	6	DSR		RTS-	NC
	7	RTS		RTS+	NC
	8	CTS		CTS+	NC
	9	RI		CTS-	NC
	10	NC		NC	NC

30 CI5VGM User’s Manual