1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
PC (DTE)
Projector
NC
NC
NC
NC
NC
NC
NC
NC
S
P
E
C
F
I
L
E
PT-
LB1V
LCD Projector
As of May 2011
SFL11M001
7 / 1 0
STX
ETX
C1 C2 C3
:
P1 P2 P3 P4
Start
(1 byte)
End
(1 byte)
Colon
(1 byte)
Parameter
(1-4 bytes)
Command
(3 bytes)
(Control and/or query commands)
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
Communication conditions (factory setting)
Basic format
Transmission from the computer begins with STX, then the ID, command, parameter, and ETX are sent
in this order. Add parameters according to the details of control.
NOTE
•
If a wrong command is received, the projector will send an ER401 command to the computer.
•
If a wrong parameter is received, the projector will send an ER402 command to the computer.
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 seconds,
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 com-
mand.
•
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.
D-sub HD 9-pin, female
No.
1
2
3
4
5
No.
6
7
8
9
Signal name
–
TXD
RXD
–
GND
Signal name
–
CTS
RTS
–
Description
NC
Send data
Receive data
NC
Ground
Signal name
Connected internally
Connected internally
Connected internally
NC
6
1
5
9
Signal level
Synchronization method
Baud rate
Parity
Character length
Stop bit
X parameter
S parameter
RS-232C-compliant
Start-stop synchronization
9,600 bps
None
8 bits
1 bit
None
None
Cable specifications
