[RS-232C control flowchart]

[RS-232C control flowchart]

 

START

 

 

Sending out command

 

No NAK returned

 

No response for

Awaiting response

1 second or longer

 

from projector

 

 

NAK returned

 

Command is sent successfully.

Command is executed successfully.

Checking execution of command (sending out check command)

OK

END

Command is sent successfully.

Command execution fails.

Check the following.

Check that the function code is correct.

Check that the data code is correct.

Check that the projector is able to issue the return command.

NG

Check the projector’s operation using

the 00vST command.

 

 

Note: In the following cases, NAK is

 

returned even when the projector is

 

in normal condition.

Immediately after the power is turned on (about 20 seconds to 2 minutes)

During input switching

During auto positioning

During password lock

Command sending fails.

Check the following.

Check that the command begins with “00”.

The projector is not supplied with AC power.

Check that AC power cord is connected.

Turn on the power. (Turn on the circuit breaker or main switch.)

Not connected with the projector.

Check that the RS-232C cable is connected.

Check the RS-232C cable for electrical discontinuity.

[Method of checking state of projector]

Sending “00vST”

0-3

 

4

To normal operation

 

 

Checking response to “00vST”

 

6

5

Projector error

Send out “00vER” to check error details.

Recover from error state.

Enter password.

Send out “00PASS****.”

Projector is functioning.

[Compatibility with the former models]

To use the RS-232C commands designed for the former models of Mitsubishi projector, by inputting “00COMMAND0”, the projector responds in the same way as the former models. (No NAK is returned.)

(For the recommended procedure to use the former command systems, see “Controlling the projector using a personal computer” for FL7000U.)

ITEM

 

Function

 

Data

 

 

 

Character

ASCII

 

 

 

 

 

 

 

 

 

Changing the RS-232C command system

COMMAND

43h 4Fh 4Dh 4Dh 41h 4Eh 44h

0

(Former command system),

 

 

 

1

(New command system)

 

 

 

 

 

4

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Mitsubishi Electronics XD250U manual RS-232C control flowchart, Method of checking state of projector, Sending out command

XD280U, XD250U, XD250U-ST specifications

The Mitsubishi Electronics XD250U-ST is a versatile and compact projector designed to meet the needs of various professional environments, including classrooms, conference rooms, and small theatres. With its remarkable features and advanced technologies, this projector offers exceptional performance and reliability.

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