LG Electronics 42LG50, 60PG30, 50PG20 Baud rate 9600 bps Uart Stop bit 1 bit Data length 8 bits

Communication Parameters

A Baud rate : 9600 bps (UART)	A Stop bit : 1 bit
A Data length : 8 bits	A Communication code : ASCII code
A Parity : None	A Use a crossed (reverse) cable.

Command Reference List

COMMAND COMMAND			DATA
	1	2	(Hexadecimal)
01. Power	k	a	00	~	01
02. Aspect Ratio	k	c	Refer to p. 112
03. Screen Mute	k	d	00	~	01
04. Volume Mute	k	e	00	~	01
05. Volume Control	k	f	00	~	64
06. Contrast	k	g	00	~	64
07. Brightness	k	h	00	~	64
08. Colour	k	i	00	~	64
09. Tint	k	j	00	~	64
10. Sharpness	k	k	00	~	64
11. OSD Select	k	l	00	~	01
12. Remote control lock mode	k	m	00	~	01
13. Balance	k	t	00	~	64
14. Colour Temperature	k	u	00	~	02
15. Abnormal Status	k	z	00	~	09
16. ISM Method	j	p Refer to p. 114
17. Power Saving	j	q	00	~	04
18. Auto Configure	j	u		01
19. Equalize	j	v Refer to p. 114
20. Tune Command	m	a Refer to p. 114
21. Channel Add/Skip	m	b	00	~ 01
22. Key	m	c	Key Code
23. Control Back Light	m	g	00	~ 64
24. Input select (Main)	x	b Refer to p. 115

* When setting the 15 ~ 24, a menu does not appear on screen.

Transmission / Receiving Protocol

Transmission

[Command1][Command2][ ][Set ID][ ][Data][Cr]

*[Command 1] : First command to control the TV. (j, k, m or x)

*[Command 2] : Second command to control the TV.

*	[Set ID]	: You can adjust the set ID to choose
		desired monitor ID number in option
		menu. Adjustment range is 1 ~ 99.
		When selecting Set ID ‘0’, every
		connected set is controlled.
		Set ID is indicated as decimal (1~99)
		on menu and as Hexa decimal
		(0x0~0x63) on transmission/
		receiving protocol.
*	[DATA]	: To transmit command data.
		Transmit ‘FF’ data to read status of
		command.
*	[Cr]	: Carriage Return
		ASCII code ‘0x0D’
*	[ ]	: ASCII code ‘space (0x20)’

OK Acknowledgement

[Command2][ ][Set ID][ ][OK][Data][x]

*The TV transmits ACK (acknowledgement) based on this format when receiving normal data. At this time, if the data is data read mode, it indicates present status data. If the data is data write mode, it returns the data of the PC computer.

Error Acknowledgement

[Command2][ ][Set ID][ ][NG][Data][x]

*The TV transmits ACK (acknowledgement) based on this format when receiving abnormal data from nonviable functions or communication errors.

APPENDIX

111

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