Canon LV-7225 Basic_Serial_Command_Codes - Page 7
Functional Execution Command, 1. Format, 2. When the command pipelining is needed, 3. Transfer
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Basic Serial Command Functional Specification Page 6 of 19 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 Command PC → Projector "C" "0" "7" Projector → PC CR ACK CR Processing (A few ms - 5s) 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 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 Note) when the status is above, even if the projector receives other command in the above status, the Projector returns [ACK] [CR].
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