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Figure 16
RS-232 (DB-9) connector
specifications
Figure 17
RS-232 (DB-9) connector and
power supply wiring diagram
16
Installing the Touch Panel
Using the RS-232 connector for mouse control or data
The dual-function RS-232 (DB-9) connector supports most standard serial mouse
control devices and RS-232 communication protocols for PC data transmission. Refer
to the TPDOC Instruction Manual for data transmission information.
Figure 16 lists RS-232 (DB-9) connector specifications and Figure 17 shows the RS-
232 (DB-9) connector and power supply wiring diagram.
RS-232 (DB-9) connector specifications
Pin
Signal
Function
1
N/A
Not used
2
RXD
Receive data
3
TXD
Transmit data
4
DTR
Data terminal ready (not used)
5
GND
Signal ground
6
N/A
Not used
7
RTS
Request to send (not used)
8
CTS
Clear to send (not used)
9
N/A
Not used
Use connector pins 2, 3, and 5 for data and ground. For some applications, you may
need to strap pins 7 (request to send) and 8 (clear to send) together depending on the
PC.
+ (PWR)
- (GND)
2 (RXD)
3 (TXD)
5 (GND)
PWR (12 VDC) connector
12 VDC power supply
2 (RXD)
3 (TXD)
5 (GND)
Optional 7-to-8 pin strap
Mouse or PC, DB-9 connector
Touch panel, DB-9 connector
Color Passive-Matrix LCD Touch Panels
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