APPENDIX

Command Reference List

 

 

COMMAND1

COMMAND2

DATA

 

 

COMMAND1

COMMAND2

DATA

 

 

(Hexadecimal)

 

 

(Hexadecimal)

 

 

 

 

00 ~ 01

 

 

 

 

 

 

00 ~ 64

01.

Power

k

a

14.

Treble

 

k

r

02. Input Select

x

b

(G p.125)

15.

Bass

 

k

s

00 ~ 64

03. Aspect Ratio

k

c

(G p.125)

16.

Balance

 

k

t

00 ~ 64

04. Screen Mute

k

d

(G p.125)

 

17.

Color Temperature

 

k

u

00 ~ 02

05. Volume Mute

k

e

00 ~ 01

18.

Energy Saving

 

j

q

(G p.127)

06. Volume Control

k

f

00 ~ 64

19.

Auto Configuration

 

j

u

(G p.127)

07.

Contrast

k

g

00 ~ 64

21.

Channel Add/Del

 

m

b

00 ~ 01

08. Brightness

k

h

00 ~ 64

22. Key

 

m

c

(G p.127)

09. Color

k

i

00 ~ 64

23.

Backlight

 

m

g

00 ~ 64

10.

Tint

k

j

00 ~ 64

 

 

 

 

 

 

 

11.

Sharpness

k

k

00 ~ 64

 

 

 

 

 

 

 

12.

OSD Select

k

l

00 ~ 01

 

 

 

 

 

 

 

13.

Remote Control

k

m

00 ~ 01

 

 

 

 

 

 

 

 

Lock Mode

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

COMMAND1

COMMAND2

DATA00

DATA01

DATA02

DATA03

DATA04

DATA05

 

(Hexadecimal)

(Hexadecimal) (Hexadecimal) (Hexadecimal) (Hexadecimal) (Hexadecimal)

 

 

 

 

 

 

physical

major

major low

minor high

minor low

attribute

20. Channel Tuning

m

a

program high

program low

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

APPENDIX

Transmission / Receiving Protocol

Transmission

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

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

[Command 2] : Second command to control the set.

[Set ID] : You can adjust the set ID to choose desired TV ID number in Setup menu. Adjustment range is 1~ 99. When selecting Set ID ‘0’, every connected the TV 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 the command data.

Transmit the ‘FF’ data to read status of command. [Cr] : Carriage Return

ASCII code ‘0x0D’

[ ] : ASCII code ‘space (0x20)’

* In this model, TV will not send the status during the standby mode.

OK Acknowledgement

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

The TV transmits ACK (acknowledgement) based on this for- mat 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.

*In this model, TV will not send the status during the standby mode.

*Data Format

[Command 2] : Use as command.

[Set ID] : Use the small character, if set ID is 10, it will send the ‘0’, ‘a’.

[DATA] : Use the small character, if data is 0 x ab, it will send the ‘a’, ‘b’.

[OK] : Use the large character.

Error Acknowledgement

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

The TV transmits ACK (acknowledgement) based on this for- mat when receiving abnormal data from non-viable functions or communication errors.

Data1: Illegal Code

Data2: Not supported function

Data3: Wait more time

*In this model, TV will not send the status during the standby mode.

*Data Format

[Command 2] : Use as command.

[Set ID] : Use the small character, if set ID is 10, it will send the ‘0’, ‘a’.

[DATA] : Use the small character, if data is 0 x ab, it will send the ‘a’, ‘b’.

[NG] : Use the large character

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LG Electronics 32LD320, 32LD350, 47LD450, 47LD420, 37LD450 Command Reference List, Transmission / Receiving Protocol, 124
Page 123 Page 125

26LD350, 42LD450, 42LD420, 47LD420, 32LD450 specifications

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The LG LD450 series, particularly the 47LD450 and 42LD450, feature Full HD 1080p resolution, providing crystal-clear images with stunning detail. The LED-backlit technology enhances brightness and contrast, delivering deeper blacks and vibrant colors. These models come equipped with LG's Intelligent Sensor technology, which automatically adjusts picture settings based on ambient light, ensuring optimal viewing conditions whether it’s day or night.

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