Mitsubishi Electronics XL1550U RS-232C control flowchart, Method of checking state of projector

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[RS-232C control flowchart]

START

Sending out command

Awaiting response

Yes

from projector

 

No response for

1 second or longer

Sending command again

1

Checking execution of

Yes

command (sending out

END

check command)

 

No

Sending command again

Awaiting response

Yes

from projector

1

 

No response for 1 second or longer

Less than

10 times Number of trials without response

10th trial

Check the following.

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.

The projector is in the state of being unable to send out a command.

Use command “00vST” to check if the projector operates normally.

[Method of checking state of projector]

Sending “00vST”

Note: In the following conditions, the projector does not respond even if it operates normally.

Immediately after turning on the power (for about 20 seconds to 2 minutes)

During switching signals (about 10 seconds)

In the process of the auto position (about 10 seconds)

During locking the password

 

0–3

 

4

Projector error

To normal operation

Checking response to “00vST”

Send out “00vER” to check error details.

 

 

Recover from error state.

6

5

Enter password.

Send out “00PASS****.”

Projector is functioning.

Use “00FNCOFF” to cancel the current function.

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Contents Pin assignment of Serial terminal D-SUB 9-pin InterfacePC-controllable functions ConnectionControl command diagram Control sequenceAscii Start RS-232C control flowchartSending out command Awaiting response Method of checking state of projectorReading command diagram Command listKeystone +/VOLUMEVolume MUTE, SPLIT, FreezeStill FRZ USER-GAMMA Mode Color Enhancer CEU1CKSH Expand MgnfyMute Mode Lamp ModeSTANDARD, 1 LOW Auto Power on Apon Auto Power OFF ApofPslock Password lock commands00APON1 00CEU1GS2