User's Manual
26
RS-232 terminal specifications
Communication configuration
To control the projector from and LCD control panel, connect RS-232 cable to the serial control
connector on the projector and set your computer‟s serial port settings to match this
communication configuration.
Setting Value
Bits per second 115,200
Data bits 8
Parity None
Stop bits 1
Flow control None
Emulation VT100
RS232 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 format (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:
Function Command Response
Brightness (BRT?) (96-160, 128)
Lamp hours (LMP?) (0-32766, 42)
A write request example: (AAA####) where
( starts the command
AAA denotes the command
#### denotes the value to be written (leading in 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.