Controlling the projector by using RS-232C

You can also control the projector by entering the command from a computer via RS-232C.

CONTENTS

73

Signal assignment of RS-232C

 

 

Interface format

1 2

 

 

 

 

1

Communication

 

Pin No.

Signal

Description

 

 

method

4

 

 

 

 

 

 

1

RXD

Receiving data

 

3

5

2

CTS

Consent to send

2

Communication

3

DSR

Data set ready

 

 

 

format

6

8

4

GND

Signal ground

 

 

 

5

RTS

Request to send

3

Data format

7

 

6

N.C

No connection

CONTROL RS-232C

7

TXD

Sending data

 

 

8

N.C

No connection

4

Return value

 

 

 

 

 

 

 

RS-232C

9600 bps, No parity, Data length: 8 bits,

Stop bit: 1 bit

STX (02h) Command (3Byte) ETX (03h)

One command only can be used per communication.

Commands shall be composed of alphanumeric characters of ASCII description. Use only capital letters.

Acknowledge ACK (06h)

Not Acknowledge NAK (15h)

Command list

Classification

Items/Status

 

Selection

Adjustment

Analog RGB(1)

Digital RGB

Video

Y/PB/PR

Camera

 

Command

Command

Analog RGB(2)

S-Video

Power

On

 

PON

-

Yes

Yes

Yes

Yes

Yes

 

Off (with confirmation message)

POF

-

Yes

Yes

Yes

Yes

Yes

 

Shut Down (without confirmation message)

PSD

-

Yes

Yes

Yes

Yes

Yes

Normal (RS

-232C Condition Display Off)

DOF

-

Yes

Yes

Yes

Yes

Yes

Picture

Contrast

 

VCN

Yes

Yes

Yes

Yes

Yes

Yes

 

Brightness

 

VBR

Yes

Yes

Yes

Yes

Yes

Yes

 

Sharpness

 

VSH

Yes

-

-

Yes

Yes

Yes

 

Camera gain

Increase

CGU

-

-

-

-

-

Yes

 

 

Decrease

CGD

-

-

-

-

-

Yes

 

Picture mode

Bright

MVB

-

Yes

Yes

-

-

-

 

 

True color

MVP

-

Yes

Yes

-

-

-

Notes

When commands are transmitted serially, wait for the reply of the projector (acknowledge or not acknowledge) before sending the next command.

Adjustment commands include “ARG” (increase adjustment value) and “ALF” (decrease adjustment value). For usable items (marked "Yes"), send after the selection command.

The "Yes" marks in the input source columns indicate that that command can be used.

Others

Continued

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Toshiba 791, 790 Controlling the projector by using RS-232C, Signal assignment of RS-232C Interface format, Command list

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