Canon LV-8320 - Manual (Page 10)

LV-8320 Basic Serial Command Specifications
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6．Functional Execution Command
6.1. Format
6.1.1 PC issues a command in format as below.
“C” COMMAND [CR]
Command: two characters (See Basic Functional Execution Command Table)
A projector changes received data to decode and returns a result after being
ready to receive next command.
[ACK]［CR］：(0x06、0x0D)When received Functional Execution Commands.
6.1.2 “？”［CR］：When the received data cannot be decoded.
6.2. Command Pipelining
When some functions need the command pipelining, the performance is the same as that of the
remote control;
6.2.1. System: issues any command every 100 ms.
6.2.2. When receiving the appropriate command, the function is executed for 120 ms from the
moment.
6.2.3. When receiving the same command continuously within 120 ms, the function is executed
for another 120 ms from the moment.
6.2.4. When there is no incoming command after 120 ms, the execution of pipelining is stopped.
6.2.5. When the projector receives other incoming commands within 120ms, the execution of
pipelining is stopped.
6.3. Transfer Example
Switch the projector to video mode with Basic Command.
Command
PC → Projector “C” “0” “7” CR
Projector → PC ACK CR
Processing
(A few ms ∼ 5s)