Mitsubishi Electronics LDT32IV (BH548) manual English-30, 00vPenter, Structure of the Read-command

3)Control sequence

(1)The command from a computer to the LCD monitor will be sent in 600ms.

(2)The LCD monitor will send a return command 600ms* after it has received and encoded. If the command isn’t received correctly, the LCD monitor 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 LCD monitor sends various codes other than return code. When having a control sequence by RS-232C, reject other codes from personal computers side.

*: The sending time of return command may delay depending on the condition (during changing of the input signal, etc.).

Example: Turn the power ON ( ’ ’ is for ASCII code)

Sending commands	Status code from	Meaning
from the PC	LCD monitor
30 30 21 0D		Command for
’0’ ’0’ ’!’ ’ ’		POWER ON
	30 30 21 0D	Command received
	’0’ ’0’ ’!’ ’ ’	(Command echoed back)

4)Operation commands

The operation commands execute the basic operation setting of this LCD monitor. It may not operate when changing the signal:

Operation	ASCII	HEX
POWER ON	!	21h
POWER OFF	"	22h
INPUT RGB 1	_r1	5Fh 72h 31h
INPUT RGB 2	_r2	5Fh 72h 32h
INPUT RGB 3	_r3	5Fh 72h 33h
INPUT VIDEO	_v1	5Fh 76h 31h
INPUT DVD/HD	_v2	5Fh 76h 32h
INPUT S-VIDEO*	_v3	5Fh 76h 33h

•POWER OFF command should be operated over 1 minute after the power is turned on.

•POWER ON command should be operated over 1 minute after the power is turned off. * S-VIDEO is SEPARATE only

5)Read command

Host computer sends the command without Data-code to monitor.

After receiving this command, the monitor returns the command with Data-code of current status to host computer. < ex. > When Host computer ask Power status of monitor, the status of monitor is powered-on.

Command from computer				Command from Monitor			Detail of command
30 30 76 50 0D	0''0'v''P'[enter]						Ask about the power status of monitor.
				30 30 76 50	31 0D '0''0''v''P''1'[enter]		Monitor is powered-on.
Structure of the Read-command
						ASCII			HEX
					Function	Data (Receive)		Function		Data (Receive)
POWER		ON			vP	1		76 50		31
		OFF(stand by)			vP	0		76 50		30
		RGB-1(DVI-D)			vI	r1		76 49		72 31
		RGB-2(D-SUB)			vI	r2		76 49		72 32
Input		RGB-3(BNC)			vI	r3		76 49		72 33
		Video			vI	v1		76 49		76 31
		DVD/HD			vI	v2		76 49		76 32
		S-VIDEO			vI	v3		76 49		76 33
Picture mode		HIGHBRIGHT			vM	p1		76 4D		70 31
		STANDARD			vM	p2		76 4D		70 32
Temperature		Around	resolution		tc1	(ex.) +25		74 63 31		2B 20 32 35
		Main board	1˚C
of Internal
		Around	resolution		tc2	(ex.) +31		74 63 32		2B 20 33 31
monitor
		Power PCB	1˚C

English-30