57
Advanced Operation
56

Control commands

The commands which the personal computer can use to control the projector
are shown in the following table.
Command Control
Contents Remarks
In standby mode, all commands other than
the PON command are ignored.
BThe PON command is ignored during
lamp ON control.
BIf a PON command is received while the
cooling fan is operating after the lamp
has switched off, the lamp is not turned
back on again straight away, in order to
protect the lamp.
Power ONPON
Power OFFPOF
VolumeAVL Parameter
000–063(Adjustment value 0–63)
Input signal
selection
IIS
Parameter
VID=VIDEO SVD=S-VIDEO
RG1=RGB1(YPBPR1) RG2=RGB2(YPBPR2)
RG3=RGB3 DVI=DVI
NWP=NETWORK (PT-L780NTU only)
SDC=SD CARD (PT-L780NTU only)
Lamp ON
condition query
Q$S
Parameter
0 = Standby
1 = Lamp ON control active
2 = Lamp ON
3 = Lamp OFF control active

Cable specifications

(When connected to a personal computer)
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
NC
NC
NC
NCNC
NC
NC
NC
At the projector At the computer
(DTE specifications)
Using the SERIAL connector
The serial connector which is on the side connector panel of the projector
conforms to the RS-232C interface specification, so that the projector can be
controlled by a personal computer which is connected to this connector.

Connection

NOTE:
BUse a proper communication
cable which is suitable for the
personal computer to connect the
serial connector and the personal
computer.

Pin layout and signal

names for SERIAL

connector

D-Sub9p (male)
Communication cable
SERIAL(female)
Computer

Basic format

The data sent from the computer to
the projector is transmitted in the
format shown below.
NOTE:
BThe projector can not receive the
command for 10 seconds after
the lamp is switched on. Wait 10
seconds before sending the
command.
BIf sending multiple commands,
check that a response has been
received from the projector for
one command before sending the
next command.
BWhen a command which does
not require parameters is sent,
the colon (:) is not required.
BIf an incorrect command is sent
from the personal computer, the
“ER401” command will be sent
from the projector to the personal
computer.

Communications settings

15
69
D-SUB 9-pin connector seen from
outside
Signal level RS-232C
AsynchronousSync. method
Baud rate
Parity
9600 bps
None
Character length 8 bits
Stop bit 1 bit
X parameter None
S parameter None
STX Command : Parameter ETX
Start byte
(02h) 3 bytes
1 byte
1 byte–5 bytes
End byte
(03h)
Pin
No.
Signal
name Contents
#NC
$TXD Transmitted data
%RXD Received data
&NC
'GND
(DSR
)CTS Connected internally
*RTS
NC
+