Basic Format - Panasonic PT-SW280A Operating Instructions Manual

Basic format

Transmission from the computer starts with STX, then the ID, command, parameter, and ETX are sent in this
order. Add parameters according to the details of control.
（2 byte）
Start (1 byte)
Basic format (has subcommands)
Sub command (5 bytes)
*1 When transmitting a command which does not need a parameter, an operation (E) and parameter are not necessary.
Attention
f If a command is transmitted after the lamp starts illuminating, there may be a delay in response or the command may not be executed. Try
sending 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 before
sending the next command. When transmitting a command which does not need a parameter, a colon (:) is not necessary.
Note
f 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 06.
f If a command is sent with a specified ID, a response will be sent to the computer only in the following cases.
g It matches the projector ID
g When [PROJECTOR ID] ( x page 70) on the projector is [ALL]
f STX and ETX are character codes. STX shown in hexadecimal is 02, and ETX shown in hexadecimal is 03.
110 - ENGLISH
Chapter 7 Appendix — Technical information
ID designate
ZZ, 01 to 06
3 command characters (3 bytes)
Semi-colon(1 byte)
2 ID characters (2 bytes)
Operation (1 byte)
"=" (Value specified using parameter is set)
Parameter (undefined length)
Colon(1 byte)
Same as basic format
Parameter (6 bytes)*
Symbol "+" or "-" (1 byte) and set value or
adjustment value (5 bytes)
End (1 byte)