LG Electronics 42LS33A, 65LS33A, 55LS33A Transmission / Receiving Protocol, Acknowledgement

ENGLISH

66CONTROLLING THE MULTIPLE PRODUCT

Transmission / Receiving Protocol

Transmission

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

* [Command1]	Identifies the factory setting and the user setting modes.
* [Command2]	Controls monitors.
* [Set ID]	Used for selecting a set you want to control. A unique set ID can be assigned to each set
	ranging from 1 to 255 (01H to FFH) under Settings in the OSD menu.
	Selecting '00H' for set ID allows the simultaneous control of all connected monitors.
* [Data]	Transmits command data.
	Data count may increase depending on the command.
* [Cr]	Carriage Return. Corresponds to '0x0D' in ASCII code.
* [ ]	White Space. Corresponds to '0x20' in ASCII code.

Acknowledgement

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

*The Product transmits an ACK (acknowledgement) based on this format when receiving normal data. At this time, if the data is FF, it indicates the present status data. If the data is in data write mode, it returns the data of the PC computer.

*If a command is sent with Set ID '00' (=0x00), the data is reflected to all monitors and they do not send an acknowledgement (ACK).

*If the data value 'FF' is sent in control mode via RS-232C, the current setting value of a function can be checked (only for some functions).

*Some commands may not be supported on some models.