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S
F
P
E
C
I
L
DLP
™
Projector
Serial connector
The serial connector complies with RS-232C. To control the projector from a personal computer, com-
mands must be input through communication software, based on the format and satisfying the commu-
nication conditions shown below.
Pin assignments and signal names
1
2
3
Mini DIN 3-pin (female)
Communication conditions (factory setting)
Signal level
Synchronization method
Baud rate
Parity
Basic format
Transmission from the computer begins with STX, then command, parameter, and ETX are sent in this
order. Add parameters according to the details of control.
STX
C1
C2 C3
NOTE: When sending commands without parameters, a colon (:) is not necessary.
Basic format with sub-commands
STX
C1 C2 C3
S1
S2 S3 S4 S5
E
NOTE: When sending sub-commands that require no parameters, operation (E) and parameters are not necessary.
CAUTION
• It may not be possible to send or receive commands for about 10 to 60 seconds when the lamp is first turned on. If this occurs, wait for 60 sec-
onds, then try sending or receiving again.
• When sending multiple commands, be sure to wait for at least 0.5 second after receiving a response from the projector before sending the next
command.
• Additional time is sometimes required for response due to processing inside the projector. Set the time-out period for command response to 10
seconds or more.
As of June 2013
SFD13M009
E
Pin No.
Signal name
1
TXD
2
RXD
3
GND
RS-232C-compliant
Start-stop synchronization
19,200 bps
None
:
P1 P2 ... Pn
:
P1 P2 P3 P4 P5 P6
I/O
OUT
IN
GND
Character length
Stop bit
X parameter
S parameter
ETX
ETX
PT-LX270
8 bits
1 bit
None
None
8 / 1 0
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