LG 42LK550 Owner's Manual - Page 135

EXTERNAL CONTROL DEVICE SETUP 135 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 set ID number in Option menu. Adjustment range is 1~ 99. When selecting Set ID '0', every connected the 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 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, set will not send the status during the standby mode. 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. * In this model, set 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 set transmits ACK (acknowledgement) based on this format when receiving abnormal data from nonviable functions or communication errors. Data1: Illegal Code Data2: Not supported function Data3: Wait more time * In this model, set 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 ENEGNLGISH