Mitsubishi Electronics XL1550U manual Control command diagram, Control sequence, Ascii

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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

 

ASCII

 

‘30h’ 30h’

Function

 

Data

‘0Dh’

 

Character

 

00

Function

 

Data

 

 

[Address code]

00 (In ASCII code, ‘30h’ ‘30h’) 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]

(In ASCII code, ‘0Dh’) fixed.

 

 

 

3. Control sequence

Computer

 

Projector

 

Sequence

Note

 

 

1

 

 

1

Send the command from the

 

 

 

 

 

 

personal computer to the projector.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

The projector will send a return

If the projector does not receive commands

 

 

 

 

 

 

command after it receives an end

normally, that is, if the projector is not connected

 

 

2

 

 

2

code.

physically or unable to receive commands, it does

 

 

 

 

 

 

not send out a return command.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

The projector sends out a return command within

 

 

3

 

 

 

 

one second at the latest.

 

 

 

 

 

The personal computer checks the

Although the projector receives the commands, it

 

 

 

 

 

 

 

 

 

 

 

3

command and confirms if the sent

in some cases does not execute the commands.

 

 

 

 

 

 

command has been received or not.

 

 

 

 

 

 

 

Use the check command to see

This projector sends various codes other than the

 

 

4

 

 

4

if the projector has executed the

return code. When having a control sequence by

 

 

 

 

 

command.

RS-232C, reject other codes from the personal

 

 

 

 

 

 

 

computer.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Although the projector sends out the return command, the command may not take effect in the following cases.

(1)During signal switching

(2)In the process of the auto position

(3)After the power is turned on.

The projector receives no commands for about 20 seconds (or for 2 minutes at the longest if the lamp does not light up promptly as the life is expiring.)

When sending commands successively, wait to receive the return command of the current command before sending a next command.

The projector may not receive a command when the splash screen is being displayed immediately after turn- ing on the power. Use command “00r10” to cancel the splash screen.

While using the LAN terminals, the LAN functions take precedence.

For the LAN terminals, the same commands as those for connecting with the TCP/IP (port number 63007) are available. Note, however, that the response becomes slightly slower than when using the RS-232C terminals.

[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

00!

 

 

 

 

‘30’ ‘30’ ‘21’ ‘0D’

Command receipt confirmation

 

00!

 

(Command echo back)

The flowchart on the next page shows the recommended operating sequence for your reference to create a program.

2

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Contents Connection InterfacePC-controllable functions Pin assignment of Serial terminal D-SUB 9-pinAscii Control command diagramControl sequence Method of checking state of projector RS-232C control flowchartSending out command Awaiting response StartCommand list Reading command diagramMUTE, SPLIT, Freeze +/VOLUMEVolume KeystoneExpand Mgnfy USER-GAMMA Mode Color Enhancer CEU1CKSH Still FRZAuto Power OFF Apof Lamp ModeSTANDARD, 1 LOW Auto Power on Apon Mute Mode00CEU1GS2 Password lock commands00APON1 Pslock