|
RS-232 Serial Connection Technical Reference
The Gateway GTW-P42M102 plasma TV has a RS-232 command set that includes front panel lock, input selection, power on/off, volume, and other standard RS-232 command controls.
RS-232 Serial Port Overview
The Gateway GTW-P42M102 plasma TV is equipped with an RS-232 serial port that lets you use the plasma TV with computer controls. The RS-232 serial port conforms to the RS-232C interface specification. The connected computer must have software, such as programming language software, that lets the computer send and receive control data within the following communications parameters.
Communications Parameters
|
Specification
|
RS-232C
|
|
Sync Method
|
Synchronous
|
|
Baud Rate
|
9600 bps
|
|
Parity
|
None
|
|
Character Length
|
8 Bits
|
|
Stop Bit
|
1 Bits
|
Pin Layout for RS-232 Terminal
|
Pin 1
|
Received Line Signal Detector
(Data Carrier Detect)
|
|
Pin 2
|
Received Data (RXD)
|
|
Pin 3
|
Transmit Data (TXD)
|
|
Pin 4
|
Data Terminal Ready (DTR)
|
|
Pin 5
|
Signal Ground
|
|
Pin 6
|
Data Set Ready (DSR)
|
|
Pin 7
|
Request To Send (RTS)
|
|
Pin 8
|
Clear To Send (CTS)
|
|
Pin 9
|
Ring Indicator
|
Command Parameters
Item
|
Cmd
|
Data
|
Details
|
|---|
|
Read
|
80
|
81-A7
|
Reads the plasma TV's current settings for command 81 through A7
|
|
Volume
|
81
|
01-64H
|
Set between 01-64H
|
|
Power On/Off
|
83
|
00-01
|
00 = Off 01 = On
|
|
Brightness
|
85
|
01-64H
|
|
|
Contrast
|
86
|
01-64H
|
|
|
V-Size
|
87
|
01-64H
|
|
|
V-Position
|
88
|
01-64H
|
|
|
H-Size
|
89
|
01-64H
|
|
|
H-Position
|
8A
|
01-64H
|
|
|
Color
|
8E
|
01-64H
|
|
|
Tint
|
8F
|
01-64H
|
|
|
Sharpness
|
90
|
01-64H
|
|
|
Input Select
|
91
|
00-07
|
00 = TV, 01 = AV1, 02 = AV2, 03 = AV3, 04 = Component 1, 05 = Component 2, 06 = RGB, 07 = DVI
|
|
Recall
|
92
|
00
|
00 = Initiate recall
|
|
Mute On/Off
|
95
|
00-01
|
00 = Off 01 = On
|
|
PanelKey Lock
|
96
|
00-01
|
00 = Off 01 = On
|
|
Language
|
97
|
00-02
|
00 = English, 01 = French, 02 = Spanish
|
|
Color Temp
|
98
|
00-03
|
00 = High, 01 = Mid, 02 = Low, 03 = 6500D
|
|
Bass
|
9A
|
01-64H
|
|
|
Treble
|
9B
|
01-64H
|
|
|
Balance
|
9C
|
01-64H
|
|
|
Woofer
|
9D
|
00-01
|
00 = Off 01 = On
|
|
BBE
|
9E
|
00-01
|
00 = Off 01 = On
|
|
Surround
|
9F
|
00-02
|
00 = Off, 01 = 3D Stereo, 02 = 3D Mono
|
|
RF Input
|
A0
|
00-01
|
00 = Air, 01 = Cable
|
|
Full Search
|
A1
|
00
|
00 = initiate full search
|
|
MTS
|
A4
|
00-02
|
00 = Stereo, 01 = Mono, 02 = SAP
|
|
Zoom
|
A5
|
00-05
|
00 = 16:9, 01 = Panorama, 02 = 4:3, 03 = Zoom1, 04 = Zoom 2, 05 = Zoom3
|
|
PIP/POP
|
A7
|
00-03
|
00 = Normal, 01 = PIP, 02 = POP1, 03 = POP2 (4:3), 04 = POP3 (16:9)
|
Basic Format for Command Parameters
In order to transmit data from the computer to the plasma TV, the data must be sent in 1 byte hex format. The command code (see the following table) must first be sent to the plasma TV, followed by the value (in hexadecimal format).
Sample sequence to change the plasma TV's input to RGB:
|
Step
1:
|
Send
1 byte for command 91 (input select) to the plasma TV in
hex format 0x91.
|
|
Step
2:
|
Send 1 byte for the value of the RGB input. In this example, send 0x06.
|
|
Step
3:
|
The plasma TV then responds to the PC with a 1 byte value to confirm the setting.
|
General information
|
If there is no data to send, then you do not need to send the parameter signal.
|
|
|
If multiple commands are transmitted, wait for the plasma TV's response from the first command before sending the next command.
Response command signals:
|
Response
|
Definition
|
|---|
|
80 70
|
MODE ERROR
|
|
80 71
|
ITEM ERROR
|
|
80 72
|
FORMAT ERROR
|
|