Note For Communications - Canon LV-7565 Specification

Expand Serial Command Specification

3. Note for Communications

3.1. The expand command is defined one command / one line that starts "C" and ends carriage return
(0x0D).
3.2. When a projector receives carriage return (0x0D), it starts decoding.
3.3. There are two type of Expand Serial Command, Functional Execution Commands and Status Read
Command.
*Functional Execution Command
"CF_BRIGHT_032" [CR]
Note) _ means a space
*Status Read Command
"CR_RIGHT" [CR]
3.4. When it takes more than one second to receive one Command, it clears information of buffer.
(Until the projector receives the carriage return since the projector has received the first data)
3.5. A projector sends a return command in a few ms to 8000ms after the projector has received the
command. When the computer keeps sending some commands, it must wait sending next
command until the projector has received the response. In short, make sure that the projector
sends a return command, and then the computer can send next command.
PC ! Projector
Projector ! PC
When a computer issues next command before receiving a return command, the projector may
not operate properly. Command processing may not be accepted before the current command
processing has not done.
Command
"CF_BRIGHT_032" [CR]
"000"
Command processing
(a few ms - 8000ms)
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[CR]
Response