Canon LV-7490 产品宣传册

LV-7490    Basic Serial Command Specifications   

                                                                                     

  

19 

7.1.1. 

PC issues commands in format as below; 

Command：1 character(See Basic Status Read Command Table) 

7.1.2.  When a projector receives the appropriate command, it returns a character line as the 

required data. 

Required Data：A character line(See Basic Status Read Command Table) 

7.1.3. 

When the received data cannot be decoded, the projector returns “?” [CR]. 

 

Get input mode for projector with basic commands 

 

 

 

Command(issues a command of getting current input mode)

 

PC → Projector                 “C”  “R”  “1”  “CR” 

Projector → PC  

   

 

 

 

                “1”   “CR” 

 

 

 

 

 

     Processing   Response

 

 

                                         

                  (A few ms～1s) 

(

Shows Computer 1 is selected)

 

 

When Eco mode is selected in Standby mode of Setting menu and projector is in Standby, Status 

Read Commands are invalid.

 

Command “CR0” 

[CR] 

Detail 

Get the projector’s operating status 

Response 

Acceptable “%1” 

[CR] 

%1 

”00” = Power ON 
“80” = Standby 
“40” = Countdown in process 
“20” = Cooling Down in process 
“10” = Power Failure 
“28” = Cooling Down in process due to Temperature Anomaly 
“88” = Coming back after Temperature Anomaly 
“24” = Power Save/Cooling Down in process 
“04” = Power Save 
“21” = Cooling Down is in process after Power off due to lamp 

failure 

“81” = Standby after Cooling Down due to lamp failure 

Unacceptable  

“?” 

[CR]