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Specifications
Section 2-2
2-2
Specifications
Touch Panel
Precautions
for Safe Use
The touch switches on the front panel of the PT are used to perform input
operations. Press the touch switches to perform operations such as switching
screens and sending bit status to the host.
! WARNING
Do not use the PT touch switch input functions for
applications where danger to human life or serious
property damage is possible, or for emergency switch
applications.
Do not press two or more touch switches at the same
time. If doing so, other switch between these switches
may be operated.
? Do not exceed a pressure of 30 N when pressing any of the touch
switches.
? Do not press the touch switches when the backlight is not lit or when
there is no display.
? Check system safety before pressing the touch switches.
? Do not use the touch switches with tools such as screwdriver.
? Inputs may not be recognized if the touch switches are pressed in
rapid succession. Check that one input operation has finished before
performing the next one.
? Touch panel resistance may change over time, causing the touch
points to shift. Periodically perform the calibration.
Connector Pin
Arrangement of COM1
5
9
1
6
1
2
3
4
5
6
7
8
9
Pin number
Signal name
NC
SD
RD
RS
CS
5VDC
NC
NC
SG
Name
Not connected.
Send data
Receive data
Request to send
Clear to send
5VDC output (250 mA max.)
Not connected.
Not connected.
Signal ground
14
Precautions
for Safe Use
Make sure that the total current capacity of devices being supplied
power is 250 mA maximum before using the 5VDC power supply from
pin 6. The capacity of the PT's 5VDC output is 250 mA maximum at
5VDC ± 5%.
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