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RS-232 commands

Communication Configuration

Visit our website for additional RS-232 settings and information.

To control this projector via RS-232, connect a null modem cable and set the

control system serial port settings to match the following communication

configuration:

Command Format

All commands consist of 3 alpha characters followed by a request, all

enclosed in parentheses. The request can be a read request (indicated by a

"?") or a write request (indicated by 1 to 4 ASCII digits).

A read request example:

(AAA?) where

( starts the command

AAA denotes the command

? denotes the read request

) ends the command

A read command returns the range and the current setting, for example:

A write request example:

(AAA####) where

(starts the command

AAA denotes the command

#### denotes the value to be written

(leading zeros not necessary)

) ends the command

Some commands have ranges, while others are absolute. If a number greater

than the maximum range is received, it is automatically set to the maximum

number for that function. If a command is received that is not understood, a

"?" is returned. With absolute settings, "0" is off, 1-9999 is on. The one excep-

tion is the Power command, where 0 is off and 1 is on.

To assure the projector can process a command, wait 3 seconds before enter-

ing the next command.

RS-232 Port Settings

Setting Value

Bits per second 19,200

Data bits 8

Parity None

Stop bits 1

Flow control None

Emulation VT100

Read Command Examples

Function Command Response

Brightness (BRT?) (96-160,128)

Volume (VOL?) (0-32, 0)

Lamp Hours (LMP?) (0-65534, 42)

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