LG CF3DAT Owners Manual - Page 43

Function Serial Communication Function * If the projector is connected to a PC through an RS-232C cable, you can use the PC to control functions of the projector such as power On/Off or input selection, etc. * You cannot use RJ45 AND RS-232C simultaneously. For serial communication, use LAN Off in the Network Settings. Establishing Serial Communication * Connect the RS-232C (serial connector) of the PC to the RS-232C connector at the back of the projector. * You need to purchase a cable to connect the RS-232C connectors as it is not provided as an accessory. • A RS-232C cable is necessary for the remote control of the projector.. RXD 2 TXD 3 DTR 4 GND 5 DSR 6 RTS 7 CTS 8 PC 2 RXD 3 TXD 4 DTR 5 GND 6 DSR 7 RTS 8 CTS Projector 96 5 1 * There is no connection to Pin 1 and Pin 9. Communication Parameter Setup • Baud Rate: 9600 bps(UART) • Data Length: 8 bit • Parity: none • Stop bit: 1 bit • Flow Control: none • Communication code: ASCII code Communication Protocol 1. Transmission [Command1] [Command2] [ ] [Set ID] [ ] [Data] [Cr] * [Command1]: The first command to control the projector (k. j, x, ASCII code, 1 Character) * [Command2]: The second command to control the projector (ASCII code, 1 Character) * [Set ID]: An ID used to select a set to control; the ID is allocated to each set in the Special Menu in the range of '1~99'. If Set ID is set to '0', you can control all the sets. * [Data]: Used to send data necessary to the commands mentioned above. If it is in ASCII code, 2 characters are sent. * If the data is 'FF', it means data read mode. * [Cr]: Carriage Return It means ASCII code '0x0D'. * [ ]: ASCII code character corresponding to "Space Bar" separating command, Set ID, and data. 43