Chapter 7 Appendix — Technical information164 - ENGLISHBasic formatTransmission from the computer starts with STX, then the ID, command, parameter, and ETX are sent in thisorder. Add parameters according to the details of control.(2 bytes)2 ID characters (2 bytes)Semi-colon (1 byte)Colon (1 byte)3 command characters (3 bytes)Parameter (undefined length)Start (1 byte)ZZ, 01 to 64ID designateEnd (1 byte)Basic format (has subcommands)Parameter (6 bytes) *1Symbol “+” or “–” (1 byte) and setting or adjustment value (5bytes)Operation (1 byte) *1“=” (Set the value specified using parameter)Sub command (5 bytes)Same as the basic format*1 When transmitting a command which does not need a parameter, an operation (E) and parameter are not necessary.Attentionf If a command is sent after the light source starts lighting, there may be a delay in response or the command may not be executed. Trysending or receiving any command after 60 seconds.f When transmitting multiple commands, be sure to wait until 0.5 seconds has elapsed after receiving the response from the projector beforesending the next command. When transmitting a command which does not need a parameter, a colon (:) is not necessary.Notef If a command cannot be executed, the “ER401” response is sent from the projector to the computer.f If an invalid parameter is sent, the “ER402” response is sent from the projector to the computer.f ID transmission in RS-232C supports ZZ (ALL) and 01 to 64.f If a command is sent with an ID designated, a response will be sent to the computer only in the following cases.g It matches the projector IDg ID is designated as ALL and [RESPONSE(ID ALL)] is set to [ON]f STX and ETX are character codes. STX shown in hexadecimal is 02, and ETX shown in hexadecimal is 03.
