Using The Serial Connector - Panasonic PT-L780NTU Operating Instructions Manual

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
Computer
SERIAL(female)
D-Sub9p (male)
Communication cable
NOTE:
B Use 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
6 9
1 5
D-SUB 9-pin connector seen from
outside
Pin Signal
Contents
No. name
#
NC
$
TXD Transmitted data
%
RXD Received data
&
NC
'
GND
(
DSR
) CTS Connected internally
*
RTS
+
NC
56
Communications settings
Signal level RS-232C
Sync. method Asynchronous
Baud rate 9600 bps
Parity None
Character length 8 bits
Stop bit 1 bit
X parameter None
S parameter None
Basic format
The data sent from the computer to
the projector is transmitted in the
format shown below.
STX Command : Parameter ETX
Start byte 1 byte End byte
(02h) (03h)
3 bytes 1 byte–5 bytes
NOTE:
B The projector can not receive the
command for 10 seconds after
the lamp is switched on. Wait 10
seconds before sending the
command.
B If sending multiple commands,
check that a response has been
received from the projector for
one command before sending the
next command.
B When a command which does
not require parameters is sent,
the colon (:) is not required.
B If an incorrect command is sent
from the personal computer, the
"ER401" command will be sent
from the projector to the personal
computer.
Control commands
The commands which the personal computer can use to control the projector
are shown in the following table.
Control
Command
Contents
In standby mode, all commands other than
the PON command are ignored.
PON Power ON
B The PON command is ignored during
lamp ON control.
B If a PON command is received while the
cooling fan is operating after the lamp
has switched off, the lamp is not turned
POF Power OFF
back on again straight away, in order to
protect the lamp.
Parameter
AVL Volume
000–063(Adjustment value 0–63)
Parameter
VID=VIDEO
Input signal RG1=RGB1(YP
IIS
selection
RG3=RGB3
NWP=NETWORK (PT-L780NTU only)
SDC=SD CARD (PT-L780NTU only)
Parameter
0 = Standby
Lamp ON
1 = Lamp ON control active
Q$S
condition query
2 = Lamp ON
3 = Lamp OFF control active
Cable specifications
(When connected to a personal computer)
At the projector
1
2
3
4
5
6
7
8
9
Remarks
SVD=S-VIDEO
P 1) RG2=RGB2(YP P
B R B
DVI=DVI
At the computer
(DTE specifications)
1
NC NC
2
3
4
NC NC
5
6
NC NC
7
8
9
NC NC
2)
R
57