Panasonic TH-42LF20W, Operating Instructions Manual

Page: 12 / 48

6 7 8 9
1 3 4 5 2
COMPUTER
RS-232C Straight cable
D-sub 9p
(Male)
(Female)
12
SERIAL Terminals connection
Notes:
• Use the RS-232C straight cable to connect the computer to the Display.
• The computer shown is for example purposes only.
• Additional equipment and cables shown are not supplied with this set.
The SERIAL terminal conforms to the RS-232C interface
speci
fi cation, so that the Display can be controlled by a
computer which is connected to this terminal.
The computer will require software which allows the
sending and receiving of control data which satisfies
the conditions given below. Use a computer application
such as programming language software. Refer to the
documentation for the computer application for details.
The SERIAL terminal is used when the Display is controlled by a computer.
Pin layout for SERIAL Terminal
Basic format for control data
The transmission of control data from the computer
starts with a STX signal, followed by the command, the
parameters, and lastly an ETX signal in that order. If there
are no parameters, then the parameter signal does not
need to be sent.
STX C1 C2 C3 P1 P2 P3 P4 : P5 ETX
Start
(02h) 3-character
command (3 bytes)
Colon Parameter(s)
(1 - 5 bytes) End
(03h)
Notes:
• If multiple commands are transmitted, be sure to wait for
the response for the fi rst command to come from this unit
before sending the next command.
• If an incorrect command is sent by mistake, this unit will
send an “ER401” command back to the computer.
Communication parameters
Signal level RS-232C compliant
Synchronization method Asynchronous
Baud rate 9600 bps
Parity None
Character length 8 bits
Stop bit 1 bit
Flow control -
Signal names for D-sub 9P connector
Pin No. Details
2
R X D
3 T X D
5
GND
4 • 6 Non use
7
8
(Shorted in this set)
1 • 9 NC
These signal names are those of computer speci fi cations.
Connections
Command
Command Parameter Control details
PON None Power ON
POF None Power OFF
AVL ** Volume 000 - 100
AMT
0 Audio MUTE OFF
1 Audio MUTE ON
IMS None
AV1
AV2
HM1
HM2
DV1
PC1
Input select (toggle)
VIDEO input (VIDEO)
COMPONENT/RGB IN input
(Component)
HDMI1 input (HDMI1)
HDMI2 input (HDMI2)
DVI-D IN input (DVI)
PC IN input (PC)
DAM None
ZOOM
FULL
NORM
ZOM2
Screen mode select (toggle)
Zoom1
16:9
4:3
Zoom2
With the power off, this display responds to PON command
only.