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3) Control sequence
(1) Send the command from the personal computer to the projector.
(2) The projector will send a return command after it receives an end code. If the command is not received cor-
rectly, 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.
•
During signal switching, the command may not take effect even when the projector sends the return command.
After signal switching completes, wait for the mode indication to disappear before sending the next command.
•
When sending commands successively, wait to receive the return command of the current command before
sending a next command.
•
Keep intervals of at least 400 ms between receipt of a return command and sending of a next command.
•
Any commands will not be executed for 10 seconds after the power is turned on.
[Example] When turning the power ON (Figures and symbols enclosed in quotation marks are ASCII codes.):
Sending commands
from the PC, etc.
30 30 21 0D
'0' '0' '!' '
'
4) Operation commands
the splash screen is being displayed, the splash screen is only canceled.)
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
POWER ON
POWER OFF
INPUT COMPUTER 1
INPUT COMPUTER 2
INPUT VIDEO
INPUT S-VIDEO
[Example]
When setting the input signal to COMPUTER 1 (Figures and symbols enclosed in quotation marks are
ASCII codes.):
Sending commands
from the PC, etc.
30 30 5F 72 31 0D
'0' '0' '_' 'r' '1' '
'
5) Volume commands
The volume commands are used for the volume setting of this projector with the value.
ITEM
VOLUME
How to set the value
Use the ASCII or the HEX code as shown below to set the value.
ASCII
'0'
'1'
HEX
30h
31h
[Example]
When setting the volume to 15 (Figures and symbols enclosed in quotation marks are ASCII codes.):
Sending commands
from the PC, etc.
30 30 56 4C 31 35 0D
'0' '0' 'V' 'L' '1' '5' '
Status code from
the projector
30 30 21 0D
'0' '0' '!' '
(Not executable in stand-by mode. When the commands for input select are sent while
ASCII
HEX
!
21h
"
22h
_r1
5Fh
_r2
5Fh
_v1
5Fh
_v2
5Fh
Status code from
the projector
30 30 5F 72 31 0D
'0' '0' '_' 'r' '1' '
(Not executable in stand-by mode. Possible only to read during muting.)
ASCII
HEX
VL
56h
4Ch
'2'
'3'
'4'
'5'
32h
33h
34h
35h
Status code from
the projector
'
30 30 56 4C 31 35 0D
'0' '0' 'V' 'L' '1' '5' '
'
Note
This command is invalid for 1 minute after the power is turned off.
This command is invalid for 1 minute after the power is turned on.
72h
31h
This command will not be executed in Stand-by mode or when the MUTE is executed.
72h
32h
This command will not be executed in Stand-by mode or when the MUTE is executed.
76h
31h
This command will not be executed in Stand-by mode or when the MUTE is executed.
76h
32h
This command will not be executed in Stand-by mode or when the MUTE is executed.
'
VALUE
00 - 21
'6'
'7'
'8'
'9'
36h
37h
38h
39h
'
2
Description
Command for POWER ON
Command receipt confirmation
(Command echo back)
Description
Command for setting the input
signal to COMPUTER 1
Command receipt confirmation
(Command echo back)
Description
Command for setting the volume
Command receipt confirmation
(Command echo back)
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