LG M3704CJ Owner's Manual page 70

RS-232C
Transmission / Receiving Protocol
21. Tile H Position(Command : d e)
To set the Horizontal position.
Transmission
Data Min : 00H to Max : 14H
Acknowledgement
22. Tile V Position(Command : d f)
To set the Vertical position.
Transmission
Data Min : 00H to Max : 14H
Acknowledgement
Controlling the Multiple Product
A15