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SERIAL
PC
8-pin DIN (male)
Serial adapter
ET-ADSER
Communication cable (RS-232C)
S PEC F ILE
PT-LB51S
Micro-Portable Wireless LCD Projector
As of October 2008 < 7 >
STX ETXC1 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.
CAUTIION
When sending multiple commands, be sure to send the next command after receiving a response from the projector.
CAUTIION
Be sure to see that an optional serial adapter ET-ADSER and a
RS-232C communication cable match the PC to be connected.
12
53
68
No.
1
2
3
4
No.
5
6
7
8
Signal name
–
–
RXD
GND
Signal name
TXD
–
–
–
Description
Connected internally
Connected internally
Receive data
Ground
Description
Send data
Connected internally
NC
NC
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
1
2
3
4
5
6
7
8
9
–
2
3
–
5
6
7
8
–
5
3
–
4
6
1
2
–
1
2
3
4
5
6
7
8
9
PC (DTE)ProjectorSerial adapter
(ET-ADSER)
NC
NC
DSR
NC
NC
NC
NC
NC
Mini DIN 8-pin