Mitsubishi Electronics SL4SU, XL5U User Manual

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Mitsubishi Electronics SL4SU, XL5U User Manual

LCD Projector

XL8U / XL5U / SL4SU

Controling the projector using a personal computer

This projector can be controlled by connecting a personal computer with RS-232C terminal.

PC-controllable functions :

Turning the power ON or OFF

Changing input signals

Inputting commands by pressing the buttons on the control panel and remote control

Menu setting

Connection

to SERIAL terminal

RS-232C cable

to SERIAL port

D-SUB 9P

8P

Important:

Make sure that your computer and projector are turned off before connection.

Boot up the computer first, and then plug the power cord of the LCD projector. (If you do not follow this instruction, the Comport may not function.)

There are two RS-232C terminals on the projector. You can use either of them.

Adapters may be necessary depending on the PC connected to this projector. Contact your dealer for details.

1) Interface

PROTOCOL

RS-232C

BAUD RATE

9600 [bps]

DATA LENGTH

8 [bits]

PARITY BIT

NONE

STOP BIT

1 [bit]

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 consists of the address code, function code, data code, and end code. The length of the command varies among the functions.

 

 

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)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 RS232C, 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.

[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)

• Any commands will not be executed for 10 seconds after the power is turned on.

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

_r1

5Fh

72h

31h

This command will not be executed in Stand-by mode or the MUTE is executed.

INPUT VIDEO 1

_v1

5Fh

76h

31h

This command will not be executed in Stand-by mode or the MUTE is executed.

INPUT VIDEO 2

_v2

5Fh

76h

32h

This command will not be executed in Stand-by mode or the MUTE is executed.

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

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)

 

 

 

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 - 31

How to set the grade

Use the ASCII codes to set the grade for setting data. Please refer to the table below for the 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] When setting the volume to 15 (standard value) (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)

 

 

 

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