Mitsubishi Electronics HL650U manual Control sequence, How to set the value

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 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.

•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	Description
	from the PC, etc.		from the projector
30 30 21 0D				Command for POWER ON
‘0’ ‘0’ ‘!’ ‘	’
		30 30 21 0D		Command receipt confirmation
		‘0’ ‘0’ ‘!’ ‘	’	(Command echo back)

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.

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 DVI	_d1	5Fh	64h	31h	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.

[Example] When setting the input signal to COMPUTER 1. (Figures and symbols enclosed in quotation marks are ASCII codes.):

Sending commands	Status code	Description
from the PC, etc.	from the projector
30 30 5F 72 31 0D		Command for setting the input signal
‘0’ ‘0’ ‘_’ ‘r’ ‘1’ ‘ ’		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 stand-by mode. Possible only to read during muting.) The volume commands are used for the volume setting of this projector with the value.

ITEM	ASCII	HEX	VALUE
VOLUME	VL	56h 4Ch	00–21

How to set the value

Use the ASCII or 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 volume to 15. (Figures and symbols enclosed in quotation marks are ASCII codes.):

Sending commands	Status code	Description
from the PC, etc.	from 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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