3)Control sequence
(1)Send the command from a personal computer to the projector. (The commands must be sent at least 400ms apart.)
(2)The projector will send a return command 400ms* after it has received an end code. If the command is not received correctly, the projector will not send the return command.
(3)The personal computer checks the command and confirms if the command which has been sent has been executed or not.
(4)This projector sends various codes other than the return code. When having a control sequence by RS- 232C, reject other codes from personal computer side.
•* : The sending time of return command may delay depending on the condition (during changing the input signal, etc.).
[Example] Turn the power ON (' 'is for ASCII code)
Sending commands |
| Status code from | Meaning |
from the PC etc. |
| projector |
|
30 30 21 0D |
|
| Command for POWER ON |
'0' '0' '!' ' ' |
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| 30 30 21 0D | Command received | |
| '0' | '0' '!' ' ' | (Command echo back) |
4) Operation commands
The operation commands execute the basic operation setting of this projector. It may not operate when chang- ing the signal.
Operation | ASCII | HEX |
|
|
POWER ON | ! | 21h |
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POWER OFF | " | 22h |
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INPUT COMPUTER | _r1 | 5Fh | 72h | 31h |
INPUT VIDEO | _v1 | 5Fh | 76h | 31h |
•POWER OFF command will not work for 1 minute after the power is turned on.
•POWER ON command will not work for 1 minute after the power is turned off.
[Example] Set the input signal to COMPUTER (' 'is for ASCII code)
Sending commands | Status code from | Meaning |
from the PC etc. | projector |
|
30 30 5F 72 31 0D |
| Command for setting the input |
'0' '0' '_' 'r' '1' ' ' |
| signal to COMPUTER |
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|
|
| 30 30 5F 72 31 0D | Command received |
| '0' '0' '_' 'r' '1' ' ' | (Command echo back) |
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5) Volume commands
The volume commands execute the volume setting of this projector with the value.
ITEM | ASCII | HEX |
| VALUE |
| ||||
VOLUME | VL | 56h 4Ch |
| 00 - 60 |
How to set the grade
Use ASCII letters code to set the grade for setting data. Please refer to the table below for HEX code.
ASCII | '0' | '1' | '2' | '3' | '4' | '5' | '6' | '7' | '8' | '9' |
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HEX | 30h | 31h | 32h | 33h | 34h | 35h | 36h | 37h | 38h | 39h |
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[Example] Set the volume to 30 (Standard value) (' 'is for ASCII code)
Sending commands | Status code from | Meaning | |
from the PC etc. | projector |
|
|
30 30 56 4C 33 30 0D |
|
| Command for setting the volume |
'0' '0' 'V' 'L' '3' '0' ' ' |
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| 30 30 56 4C 33 30 | 0D | Command received |
| '0' '0' 'V' 'L' '3' '0' ' | ' | (Command echo back) |
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