MITSUBISHI ELECTRIC WD510U - Manual (Page 2)

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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 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)
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)
Operation ASCII HEX Note
POWER ON ! 21h This command is invalid for 1 minute after the power is turned off.
POWER OFF " 22h This command is invalid for 1 minute after the power is turned on.
INPUT COMPUTER 1 _r1 5Fh 72h 31h This command will not be executed in Stand-by mode or when the MUTE is executed.
INPUT COMPUTER 2 _r2 5Fh 72h 32h This command will not be executed in Stand-by mode or when the MUTE is executed.
INPUT VIDEO _v1 5Fh 76h 31h This command will not be executed in Stand-by mode or when the MUTE is executed.
INPUT S-VIDEO _v2 5Fh 76h 32h This command will not be executed in Stand-by mode or when the MUTE is executed.
INPUT DVI _d1 5Fh 64h 31h This command will not be executed in Stand-by mode or when the MUTE is executed.
4) Operation commands (Not executable in stand-by mode. When the commands for input select are sent while
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.
5) Volume commands (Not executable in stand-by mode. Possible only to read during muting.)
The volume commands are used for the volume setting of this projector with the value.
[Example] When setting the volume to 15 (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)
ITEM ASCII HEX VALUE
VOLUME VL 56h 4Ch 00 - 21
How to set the value
Use the ASCII or the HEX code as shown below to set the value.
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 input signal to COMPUTER 1 (Figures and symbols enclosed in quotation marks are
ASCII codes.):