Product Note
RS232 Terminal Specifications-Communication configuration
To control your projector from an LCD control panel, connect the null modem cable and set
your computer’s serial port settings to match this communication configuration:
Command format
All commands consist of 3 alphanumeric characters followed by a request, all enclosed in
parentheses. The request can be a read request (indicated by a “?”) or a write request (indi-
cated 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
:
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 maxi-
mum 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.
Setting
Value
Bits per second
19,200
Data bits
8
Parity
None
Stop bits
1
Flow control
None
Emulation VT100
Function
Command
Response
Brightness
(BRT?)
(0-22, 10)
Volume (VOL?)
(0-80,
0)
Lamp hours
(LMP?)
(0-9999, 421)
Function
Command
Response
Brightness
(BRT10)
Sets the brightness to 10
Freeze
(FRZ1) or
(FRZ8888)
Freezes the display
Power
(PWR0)
Turns power off
