Communication Parameters - LG TV Owner's Manual

APPENDIX

Communication Parameters

■ Baud rate : 9600 bps ( UART )
■ Data length : 8 bits
■ Parity : None
■ Stop bit : 1 bit
■ Communication code : ASCII code
Command Reference List
01. Power
02. Aspect Ratio
03. Screen Mute
04. Volume Mute
05. Volume Control
06. Contrast
07. Brightness
08. Colour
09. Tint
10. Sharpness
11. OSD Select
12. Remote control lock mode
13. Treble
14. Bass
15. Balance
16. Colour Temperature
17. Energy Saving
18. Auto Configuration
19. Tune Command
20. Programme Add/Skip
21. Key
22. Control Back Light
23. Input select (Main)
* Note : During USB operations such as DivX or EMF, all
commands except Power(ka) and Key(mc) are not exe-
cuted and treated as NG.
178
COMMAND COMMAND DATA
1 2 (Hexadecimal)
k a 00 to 01
k c Refer to p. 179
k d Refer to p. 179
k e 00 to 01
k f 00 to 64
k g 00 to 64
k h 00 to 64
k i 00 to 64
k j 00 to 64
k k 00 to 64
k l 00 to 01
k m 00 to 01
k r 00 to 64
k s 00 to 64
k t 00 to 64
x u 00 to 64
j q 00 to 05
j u 01
m a Refer to p. 181
m b 00 to 01
m c Key Code
m g 00 to 64
x b Refer to p. 182
■ Use a crossed (reverse) cable.
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 to 99.
When selecting Set ID '0', every con-
nected set is controlled.
Set ID is indicated as decimal (1 to 99)
on menu and as Hexa decimal (0x1 to
0x63) on transmission/receiving proto-
col.
* [DATA] : To transmit command data.
Transmit 'FF' data to read status of com-
mand.
* [Cr] : Carriage Return
ASCII code '0x0D'
* [ ] : ASCII code 'space (0x20)'
OK Acknowledgement
[Command2][ ][Set ID][ ][OK][Data][x]
* The set 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 set transmits ACK (acknowledgement) based
on this format when receiving abnormal data from
non-viable functions or communication errors.
Data 00: Illegal Code