Universal Remote Control M-855 user manual COM4 Figure

COM4 RS-232/422/485 Serial Port Connectors (14-pins Pin-Header): CN14

Pin #	Assignment	Pin #	Assignment
1	DCD	2	RXD
3	TXD	4	DTR
5	Ground	6	DSR
7	RTS	8	CTS
9	RI	10	Ground
11	TXD+	12	TXD-
13	RXD+	14	RXD-

yCOM4 Figure:

14

13

2

1

Note: How to connect a RS485 device with the COM port ribbon cable?

Our Industrial Board encloses a COM port ribbon cable for internal connection. RS422/485 device must connect to downside D-Sub with 5-pin cable and signal indication as below.

For RS-232	Connector
1	5	RS-422/485:
		1: TXD-
		2: TXD+
6	9	3: RXD-
		4: RXD+

5: GND

For RS-422/485 Connector

Installation • 23