Rs-232 Commands - InFocus IN42ff User Manual

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:
RS-232 Port Settings
Setting
Bits per second
Data bits
Parity
Stop bits
Flow control
Emulation
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
Value
19,200
8
None
1
None
VT100
A read command returns the range and the current setting, for example:
Read Command Examples
Function Command
Brightness (BRT?)
Volume (VOL?)
Lamp Hours (LMP?)
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.
40
Response
(96-160,128)
(0-32, 0)
(0-65534, 42)