LG Electronics M2780DN Computer Monitor User Manual


 
149
APPENDIX
Communication Parameters
Baud rate: 9600 bps
(
UART
)
Data length: 8 bits
Parity : None
Stop bit: 1 bit
Communication code: ASCII code
Use a crossed (reverse) cable.
Transmission
*
[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 (0x0 to 0x63)
on transmission/receiving protocol.
*
[DATA] : To transmit command data.
Transmit ‘FF’ data to read status of com-
mand.
*
[Cr] : Carriage Return
ASCII code ‘0x0D’
*
[ ] : ASCII code ‘space (0x20)’
[Command1][Command2][ ][Set ID][ ][Data][Cr]
OK Acknowledgement
* 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 pres-
ent status data. If the data is data write mode, it
returns the data of the PC computer.
[Command2][ ][Set ID][ ][OK][Data][x]
Error Acknowledgement
* The set transmits ACK (acknowledgement) based
on this format when receiving abnormal data from
non-viable functions or communication errors.
[Command2][ ][Set ID][ ][NG][Data][x]
Transmission / Receiving Protocol
Command Reference List
Data 00: Illegal Code
* When setting the 17 to 24, a menu does not appear on
screen.
* Note : During USB operations such as Dvix or EMF, all
commands except Power(ka) and Key(mc) are not exe-
cuted and treated as NG.
COMMAND
1
COMMAND
2
DATA
(Hexadecimal)
01. Power k a
00
to
01
02. Aspect Ratio k c Refer to p. 150
03. Screen Mute k d
00
to
01
04. Volume Mute k e
00
to
01
05. Volume Control k f
00
to
64
06. Contrast k g
00
to
64
07. Brightness k h
00
to
64
08. Colour k i
00
to
64
09. Tint k j
00
to
64
10. Sharpness k k
00
to
64
11. OSD Select k l
00
to
01
12.
Remote control lock mode
k m
00
to
01
13. Treble k r
00
to
64
14.
Bass
k s
00
to
64
15. Balance k t
00
to
64
16.
Colour Temperature
x u
00
to
64
17. Energy Saving j q
00
to
05
18. Auto Configuration j u 01
19. Tune Command m a Refer to p. 152
20. Programme Add/Skip m b
00
to
01
21. Key m c Key Code
22. Back Light m g
00
to
64
23. Input select (Main) x b Refer to p. 153