(RS-232C) Specifications and Command Settings

PC control

A computer can be used to control the projector by connecting an RS-232C cable (null modem, cross type, commercially available) to the projector. (See page 23 for connection.)

Communication conditions

Set the serial port settings of the computer to match that of the table. Signal format: Conforms to RS-232C standard.

Baud rate*: 9,600 bps / 384,00bps / 1152,00bps

Data length: 8 bits

Parity bit: None

Stop bit: 1 bit

Flow control: None

*Use the same settings for the projector and computer.

Basic format

Commands from the computer are sent in the following order: command, parameter, and return code. After the projector processes the command from the computer, it sends a response code to the computer.

Command format

 

C1 C2

C3

C4

P1

P2

P3

P4

 

 

 

 

 

Return code (0DH)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Command 4-digit

Parameter 4-digit

 

 

 

 

Response code format

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Normal response

 

Problem response (communication error or incorrect command)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

O

K

 

 

Return code (0DH)

 

 

 

E

R

R

 

Return code (0DH)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Info

•When more than one code is being sent, send each command only after the response code for the previous command from the projector is verified.

•In the case of transmitting commands during standby, it takes a maximum of 30 seconds until the response code is received.

•When the power is turned on during standby with the “POWER ON” command, wait for at least 30 seconds after the power has been turned on, and then transmit the next command.

Note

•When using the computer control function of the projector, the projector’s operating status cannot be read by the computer. Therefore, confirm the status by transmitting the display commands for each adjustment menu and checking the status with the on-screen display. If the projector receives a command other than a menu display command, it will execute the command without displaying the on-screen display.

Commands

Example:

•When “BRIGHT” of INPUT 1 image adjustment is set to –10.

 

 

 

Computer

→

Projector

R

A

B

R

_

–

1

0

 

←

O

K

 

-80