LG External Control Device Setup
EXTERNAL CONTROL DEVICE SETUP
• Image shown may differ from your TV.
Connect the USB to Serial(RS-232C) converter/RS-232C(Serial) input jack to an external control device
(such as a computer or an A/V control system) to control the product’s functions externally.
Note: The type of control port on the TV can be different between model series.
* Please be advised that not all models support this type of connectivity.
* Cable is not provided.
USB to Serial(RS-232C) converter with USB Cable
• LGTV supports PL2303 chip-based (Vendor ID : 0x0557, Product ID : 0x2008) USB to serial(RS-232C)
converter which is not made nor provided by LG.
• It can be purchased from computer stores that carry accessories for IT support professionals.
RS-232C(Serial) With RS-232C(Serial) Cable
DE9 (D-Sub 9pin) Type
• You need to purchase the RS-232C (DE9, D-Sub 9pin female-to-female type) to RS-232C(Serial) cable
required for the connection between the PC and the TV, which is specified in the manual.
The connection interface may differ from your TV.
Phone jack Type
• You need to purchase the phone-jack to RS-232 cable required for the connection between the PC and
the TV, which is specified in the manual.
* For other models, connect to the USB port.
* The connection interface may differ from your TV.
Set ID
For Set ID number, see "Real Data Mapping" on p.6
1. Press SETTINGS to access the main menus.
2. Press the Navigation buttons to scroll to (*General → About this TV or OPTION) and press OK.
3. Press the Navigation buttons to scroll to SET ID and press OK.
4. Scroll left or right to select a set ID number and select CLOSE. The adjustment range is 1-99.
5. When you are finished, press EXIT.
* (Depending on model)
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.
Command reference list
(Depending on model)
* Note: During playing or recording media, all commands except Power (ka) and Key (mc) are not
executed and treated as NG.
With RS232C cable, TV can communicate "ka command" in power-on or power-off status. but with
USB-to-Serial converter cable, the command works only if TV is on.
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 in TV is 1 to 99. If [Set ID] value is selected to ‘0’, every connected set
can be controlled.
* [Set ID] is indicated as decimal (1 to 99) on menu and as Hexadecimal (0x00 to 0x63) on
transmission/receiving protocol.
[DATA] : To transmit command data (hexadecimal). Transmit ‘FF’ data to read status of command.
[Cr] : Carriage Return - ASCII code ‘0x0D’
[ ] : Space – ASCII code ‘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
Real data mapping (Hexadecimal b Decimal)
* When you enter the [data] in hexadecimal, refer to following conversion table.
* Channel Tune (ma) Command uses two-byte hexadecimal value([data]) to select channel number.
00 : Step 0 32 : Step 50 (Set ID 50) FE : Step 254
01 : Step 1 (Set ID 1) 33 : Step 51 (Set ID 51) FF : Step 255
... ... ...
0A : Step 10 (Set ID 10) 63 : Step 99 (Set ID 99) 01 00 : Step 256
... ... ...
0F : Step 15 (Set ID 15) C7 : Step 199 27 0E : Step 9998
10 : Step 16 (Set ID 16) C8 : Step 200 27 0F : Step 9999
* Commands may work differently depending on model and signal.
