Canon LV-7225 - LCD Multimedia Projector XGA Spécification fonctionnelle - Page 7

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Canon LV-7225 - LCD Multimedia Projector XGA Spécification fonctionnelle
Basic Serial Command Functional Specification

6. Functional Execution Command

6.1. Format

6.1.1. PC issues a command as below format.
"C" COMMAND [CR]
COMMAND: 2 characters (See Functional Execution Command Table)
6.1.2. A Projector changes received data to decode and sends a return result after being ready to
receive next command.
[ACK] [CR]: (0x06, 0x0D) When received functional execution commands.
6.1.3. "?" [CR]: When cannot read received data.

6.2. When the command pipelining is needed

When some functions need command pipelining, the performance is the same as the Remote
control's performance.
1) System: issue any commands every 100ms after receiving response.
2) When received appropriate command, the function round execute for a 120ms.
3) When receiving the same command continuously, with 120ms, the function is executed for
120ms form the moment.
4) The next command is not issued after 120ms, and the execution is stopped.
5) If the Projector receives other incoming commands within 120ms, the execution is stopped.

6.3. Transfer Example

Change to Video Mode with Basic Command
PC → Projector
Projector → PC

6.4. Operation Requirements

When the Projector's status in this below, functional execution commands are limited.
Projector Status
Standby Mode
Processing Countdown
Processing Cooling Down
Processing Cooling Down
at Abnormal Temperature
Abnormal Temperature Status
Processing Cooling Down
at Power Save
Power Save Status
Note) when the status is above, even if the projector receives other command in the above status,
the Projector returns [ACK] [CR].
Command
"C"
"0"
"7"
CR
Available Functional Execution Commands
C00: Power On only
C00: Power On → Terminate processing countdown
C01: Power Off
C02: Power Off → Terminate processing countdown
None (Does not execute even if receiving a command)
None (Does not execute even if receiving a command)
None (Does not execute even if receiving a command)
None (Does not execute even if receiving a command)
C00: Power On
C01: Power Off
Other Commands: Power On
ACK CR
Processing
(A few ms – 5s)
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