Mitsubishi LVP-X70U, LVP-X50U, LVP-S50U Brochure
RS-232C cable
to RS-232C
terminal
RS-232C adaptor
for Macintosh (optional)
to modem port
or printer port
D-SUB 9PD-SUB 9PMini DIN 8P Mini DIN 8P
LCD Projector
LVP-X70U / LVP-X50U / LVP-S50U
Cont rol projector by usi ng a personal computer
This projector can be controlled by connecting a personal computer with RS-232C terminal.
Functions can be controlled by a personal computer:
• Turn the ON or OFF
• Changing input signals
• Button input by remote control or control panel
• Menu setting
Connection
Project or + IBM PC or IBM PC compat ibles
to RS-232C
terminal
Projector + Macintosh
to Com1
Comport
RS-232C cable
D-SUB 9P Mini DIN 8P
Note: If your PC (IBM or IBM compatible) is equipped only with a 25-pin serial port connector, a 25-pin
serial port adapter is required. Contact your dealer for details.
1) Interface
PROTOCOL RS-232C
BAUD RATE 9600 [bps]
DATA LENGTH 8 [bits]
PARITY BIT NONE
STOP BIT 1 [bits]
FLOW CONTROL NONE
This projector uses RXD, TXD and GND lines for RS-232C control.
For RS-232C cable,the reverse type cable should be used.
2) Control command diagram
The command is structured by the address code, function code, data code and end code. The length of the
command is different by each function.
Address code Function code Data code End code
HEX 30h 30h Function Data 0Dh
ASCII '0' '0' Function Data
[Address code] 30h 30h (In ASCII code, '0' '0') fixed.
[Function code] A code of each fixed control move.
[Data code] A code of each fixed control data (number) and not always indicated.
[End code] 0Dh (In ASCII code, ' ') fixed.
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3) Control sequence
(1) The command from a personal computer to the projector will be sent in 400ms.
(2) The projector will send a return command 400ms* after it has received an encode. If the command isn’t
received correctly, the projector 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 projector sends various codes other than the return code. When having a control sequence by RS-
232C, reject other codes from personal computer side.
• * : The sending time of return command may delay depending on the condition (during changing the
input signal, etc.).
[Example] Turn the power ON (' 'is for ASCII code)
Sending commands Status code from Meaning
from the PC etc. projector
30 30 21 0D Command for POWER ON
'0' '0' '!' ' '
30 30 21 0D Command received
'0' '0' '!' ' ' (Command echo back)
4) Operation commands
The operation commands execute the basic operation setting of this projector. It may not operate when changing the signal.
Operation
POWER ON ! 21h
POWER OFF " 22h
INPUT COMPUTER _r1 5Fh 72h 31h
INPUT VIDEO _v1 5Fh 76h 31h
ASCII HEX
• POWER OFF command will not work for 1 minute after the power is turned on.
• POWER ON command will not work for 1 minute after the power is turned off.
[Example] Set the input signal to COMPUTER (' 'is for ASCII code)
Sending commands Status code from Meaning
from the PC etc. projector
30 30 5F 72 31 0D Command for setting the input
'0' '0' '_' 'r' '1' ' ' signal to COMPUTER
30 30 5F 72 31 0D Command received
'0' '0' '_' 'r' '1' ' ' (Command echo back)
5) Volume commands
The volume commands execute the volume setting of this projector with the value.
ITEM ASCII HEX VALUE
VOLUME VL 56h 4Ch 00 - 60
How to set the grade
Use ASCII letters code to set the grade for setting data. Please refer to the table below for 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] Set the volume to 30 (Standard value) (' 'is for ASCII code)
Sending commands Status code from Meaning
from the PC etc. projector
30 30 56 4C 33 30 0D Command for setting the volume
'0' '0' 'V' 'L' '3' '0' ' '
30 30 56 4C 33 30 0D Command received
'0' '0' 'V' 'L' '3' '0' ' ' (Command echo back)
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