3)Control sequence
(1)Send the command from the personal computer to the projector. (The commands shall be sent at intervals of at least 400ms.)
(2)The projector will send a return command 400ms* after it receives 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 sent command 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 the personal computer.
*: The sending time of return command may delay depending on the (operating conditions) during changing the input signal, etc.
[Example] When turning the power ON (Figures and symbols enclosed in quotation marks are ASCII codes.):
Sending commands |
| Status code from | Description |
from the PC, etc. |
| the projector |
|
30 30 21 0D |
|
| Command for POWER ON |
'0' '0' '!' ' ' |
|
|
|
|
|
| |
| 30 30 21 0D | Command receipt confirmation | |
| '0' | '0' '!' ' ' | (Command echo back) |
•Any commands will not be executed for 10 seconds after the power is turned on.
4) Operation commands
The operation commands are used for the basic operation setting of this projector. They may not be executed while the signals are changed. The operation commands have no data codes.
Operation | ASCII | HEX |
|
| Note |
POWER ON | ! | 21h |
|
| This command will not be executed for 1 minute after the power is turned off. |
POWER OFF | " | 22h |
|
| This command will not be executed for 1 minute after the power is turned on. |
INPUT COMPUTER 1 | _r1 | 5Fh | 72h | 31h | This command will not be executed in |
INPUT COMPUTER 2 | _r2 | 5Fh | 72h | 32h | This command will not be executed in |
INPUT VIDEO 1 | _v1 | 5Fh | 76h | 31h | This command will not be executed in |
INPUT VIDEO 2 | _v2 | 5Fh | 76h | 32h | This command will not be executed in |
[Example] When setting the input signal to COMPUTER 1 (Figures and symbols enclosed in quotation marks are ASCII codes.):
Sending commands | Status code from | Description |
from the PC, etc. | the projector |
|
30 30 5F 72 31 0D |
| Command for setting the input |
'0' '0' '_' 'r' '1' ' ' |
| signal to COMPUTER 1 |
|
|
|
| 30 30 5F 72 31 0D | Command receipt confirmation |
| '0' '0' '_' 'r' '1' ' ' | (Command echo back) |
|
|
|
5)Volume commands (Not executable in
The volume commands are used for the volume setting of this projector with the value.
ITEM | ASCII | HEX | VALUE |
VOLUME | VL | 56h 4Ch | 00 - 31 |
How to set the grade
Use the ASCII codes to set the grade for setting data. Please refer to the table below for the HEX code.
ASCII | '0' | '1' | '2' | '3' | '4' | '5' | '6' | '7' | '8' | '9' |
HEX | 30h | 31h | 32h | 33h | 34h | 35h | 36h | 37h | 38h | 39h |
[Example] When setting the volume to 15 (standard value) (Figures and symbols enclosed in quotation marks are ASCII codes.):
Sending commands | Status code from | Description |
from the PC, etc. | the projector |
|
30 30 56 4C 31 35 0D |
| Command for setting the volume |
'0' '0' 'V' 'L' '1' '5' ' ' |
|
|
|
|
|
| 30 30 56 4C 31 35 0D | Command receipt confirmation |
| '0' '0' 'V' 'L' '1' '5' ' ' | (Command echo back) |
|
|
|
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