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

To assure the projector can process a command, wait 3 seconds before entering the next command.

Write Command Examples

 

Function

 

Command

 

Response

 

Brightness

 

(BRT10)

 

Sets the brightness

 

 

 

 

 

to 10

 

Freeze

 

(FRZ1) or

 

Freezes the display

 

 

 

(FRZ8888)

 

 

 

Power

 

(PWR0)

 

Turns power off

 

Power

 

(PWR1)

 

Turns power on

 

Error Conditions

 

 

 

 

Not all commands are supported for all projectors. If an unsupported command is issued, the command will be ignored. If a command is received that is not understood, a ‘?’ character will be returned indicating the command was not understood.

Limitations

The CLI cannot respond to commands coming in at a high-rate. Therefore, a delay must occur between commands to ensure that the command gets properly executed. To assure the projector can process a command, wait 3 seconds before entering the next command.

The following table lists the RS-232 command value ranges for controlling the LP720.

Note: Specified commands and values apply to the LP720 with version 3.04 software or higher. The version number of the software is the first number listed in the upper right corner of the on-screen menu. Command values for LP720s with earlier software versions may vary. If your LP720 does not have version 3.04 software or higher, go to the Software/Downloads page to download and upgrade the projector software.

For absolute command value ranges of 0 - 1, 0 = "Off" and 1-9999 = "On" unless otherwise noted.

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InFocus LP720 RS-232 manual Write Command Examples Function Response, Error Conditions, Limitations