Canon LV-S4 Serial Functional Specification - Page 16

State Read Command, Format, Transfer Example, Status Read Command, Response Detail, 00 [CR]

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SERIAL FUNCTIONAL SPECIFICATION Page 15 of 18 8. State Read Command 8.1. Format 1) Computer issues commands fin format as below. "CＲ" COMMAND [CR] Command: 1 character (See Status Read Command Table) 2) When a projector receives the appropriate command, it returns a character line as the required data. Required Data [CR] Required Data: A character line (See Status Read Command Table) 3) When receiving data cannot be decode, the projector returns, ""?" [CR]. 8.2. Transfer Example Get input mode for the projector by basic commands. PC ! Projector Projector ! PC COMMAND (current input mode command issue) "C" "R" "1" CR "1" CR Response (A few ms--1s) (Shows Computer is selected) 8.3. Status Read Command Command "CR0" [CR] Detail Get the projector status Acceptable "%1" [CR] Response "00" = POWER ON "80" = STANDBY "40" = Processing Count Down "20" = Processing Cooling Down %1 "10" = Power Failure "28" = Processing cooling down due to abnormal temperature "08" = Abnormal Temperature "88" = normal after recovering abnormal temperature "24" = Processing Power Save / Cooling Down "04" = Power Save Unacceptable "?" [CR] 【Response Detail】 1) "00" [CR] Status: POWER ON The image is displayed normally.

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SERIAL FUNCTIONAL SPECIFICATION
Page 15 of 18
8.
State Read Command
8.1.
Format
1) Computer issues commands fin format as below.
“C
Ｒ”
COMMAND [CR]
Command: 1 character (See Status Read Command Table)
2) When a projector receives the appropriate command, it returns a character line as the
required data.
Required Data [CR]
Required Data: A character line (See Status Read Command Table)
3) When receiving data cannot be decode, the projector returns, “
“?” [CR].
8.2.
Transfer Example
Get input mode for the projector by basic commands.
COMMAND (current input mode command issue)
PC
!
Projector
“C”
”R” ”1”
CR
Projector
!
PC
”1”
CR
←―――→
Response
(A few ms--1s)
(Shows
Computer is selected)
8.3.
Status Read Command
Command
“CR0” [CR]
Detail
Get the projector status
Acceptable
“%1” [CR]
%1
“00” = POWER ON
“80” = STANDBY
“40” = Processing Count Down
“20” = Processing Cooling Down
“10” = Power Failure
“28” = Processing cooling down due to abnormal temperature
“08” = Abnormal Temperature
“88” = normal after recovering abnormal temperature
“24” = Processing Power Save / Cooling Down
“04” = Power Save
Response
Unacceptable
“?” [CR]
【
Response Detail
】
1)
“00” [CR]
Status: POWER ON
The image is displayed normally.