Microsoft UNO-3074 RS-232/422/485 Serial Port COM3~COM4, Ethernet RJ-45 Connector LAN1~LAN2

A.5 RS-232/422/485 Serial Port (COM3~COM4)

Table A.8: RS-232/422/485 Serial Port Pin Assigns

Pin	RS-232	RS-422	RS-485
1	DCD	Tx-	DATA-
2	RxD	Tx+	DATA+
3	TxD	Rx+	NC
4	DTR	Rx-	NC
5	GND	GND	GND
6	DSR	NC	NC
7	RTS	NC	NC
8	CTS	NC	NC
9	RI	NC	NC

A.6 Ethernet RJ-45 Connector (LAN1~LAN2)

Table A.9: Ethernet RJ-45 Connector Pin Assigns

Pin

1

2

3

4

5

6

7

8

10/100Base-T Signal Name

XMT+

XMT-

RCV+

NC

NC

RCV-

NC

NC

UNO-3074 User Manual 64