Panasonic RS-232 Protocolfor LCD Projector883 Communication3.1 Command FormatImplement commands that are to be sent to the projector in the following manner.[STX] COM1:P1P2P3P4 [ETX]Head identifier - Send [STX] (Hex’02’ or Ctrl B for ASCII), at the beginning of the command string.This will allow the projector to receive the following command.Command (COM1) – The Command is written by 3 characters. The Letters are capitalized. . Seethe command tables in Section 5 for details.Parameter (P1P2P3P4) - The Parameter data is required by certain commands. The parameterdata information can be 1 to 4 bytes in length, which is dependant on the individual commands. If noparameter is required by the specific command, then this information does not need to betransmitted. See the command tables in Section 5 for details.End identifier - Send [ETX] (Hex’03’ or CTRL C for ASCII) at the end of command string.Command and its parameter should be separated by a ”:” colon (Hex’3A’). When a command thatdoes not require parameters is sent, then the separating colon can be eliminated.Example of a command string:[STX] I I S : V I D [ETX]02 49 49 53 3A 56 49 44 03Command with Parameter[STX] P O N [ETX]02 50 4F 4E 03Command without Parameter
