LG Electronics M5520C, M4720C owner manual Controlling the Multiple Product

RS-232C Controlling the Multiple Product

Use this method to connect several products to a single PC. You can control several products at a time by connecting them to a single PC.

If the [Set ID] menu in [Option] is set to OFF, the monitor ID value should be set between 1 and 99.

Connecting the cable

Connect the RS-232C cable as shown in the picture.

You need to purchase a cable to connect the RS-232C socket as it is not provided as the accessory.

The RS-232C protocol is used for communication between the PC and product. You can turn the product on/off, select an input source or adjust the OSD menu from your PC.

RS-232C Cable (not included)

PC

monitor 1 monitor 2 monitor 3 monitor 4

RS-232C Configurations

7-Wire Configurations (Standard RS-232C cable)

	PC	Monitor
RXD
	2		3	TXDRXD
TXD	3		2	GND
GND	5		5	DSR
DTR	4		6	DTR
DSR	6		4	CTS
RTS	7		8	RTS
CTS	8		7
	D-Sub 9	D-Sub 9
	(Female)	(Female)

3-Wire Configurations (Not Standard)
	PC	Monitor
RXD
	2		3	TXDRXD
TXD	3		2	GND
GND	5		5	DTR
DTR	4	6		DSR
DSR	6	4		RTS
RTS	7	7		CTS
CTS	8	8
	D-Sub 9	D-Sub 9
	(Female)	(Female)

Communication Parameter

►Baud Rate : 9600 buad Rate (UART)

►Data Length : 8 bit

►Parity Bit : None

►Stop Bit : 1bit

►Flow Control : None

►Communication Code : ASCII code

►Use a crossed (reverse) cable

A1