Supplement B
PLC Workstation
B.5 Touch Panel
The PWS-700T is equipped with a resistive type touch panel.
The touch panel has a matrix of 15(H) by 8(V) switches and
each switch just covers an area of 16(H) x 16(V) display
dots. You can design touch keys for each of your screens.
You can configure a touch key to display another screen or
control an on/off location within your PLC. The shape of the
touch key must be rectangular, but the size of a touch key
is configurable and can be as small as a single touch switch
or as large as the entire screen(15x8 switches). One screen
can have up to 120 touch keys.
When you press a touch key, the Workstation responds by
sounding the buzzer for 200 milli-seconds (default) and
reversing the color of that touch key for 200 milli-seconds.
With the feedback, you know the Workstation accepts your
key-press. You can use Miscellaneous Settings dialog box of
ADP3 to set the parameter of touch screen for your
Workstation.
For each changeable Object of a screen, the Compile function
of ADP3 automatically groups those touch switches that the
display area of the Object covers to form a touch key for
the selection purpose. With the touch panel, it is very easy
to select and change a location within your PLC on the
current screen; you just press the display area of the
Object you want to change; the Workstation marks your
selection by reversing its color and displays the Numeric
Touch Keypad for you to change the selected PLC location.
B.5.1 Built-in Touch Keys
The built-in touch keys are touch keys that the ADP3
automatically configure for your application so that you
don't have to spend any time to program them. The built-in
touch keys allow the operator to select and change a PLC
location very easily.
There are two groups of built-in touch keys called Numeric
Touch Keypad and Password Reentering Keypad that the
Workstation displays for you to change data. The Numeric
Touch Keypad Its image is shown in the following
B-4
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