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2-1SectionPT Screens

screens. (Thumbwheel switches can be used but temporary input fields can-

not.) For details on numeral input, refer to 2-12 Inputting Numeric Values (page

192), and for details on character string input, refer to 2-13 Inputting Character

Strings (page 210).

• Arrange the touch switches registered for each child screen, so that they do not

overlap on the parent screen. If touch switches are overlapped, the intended

operation may not be performed when a touch switch is pressed.

• On overlapping screens, the screen attributes of the child screens are invalid

and the screen display is governed by the attributes of the parent screen. For

details on screen attributes, refer to 2-1-4 Screen Attributes (page 45).

Apart from the normal (standard) screen display method, which a screen is dis-

played over the entire panel area, the PT also allows screens to be displayed in

one part of the screen area only. This partial screen is called a window. and a

screen on which a window is displayed is called a window screen.

Window screens can be registered under any screen numbers 1 to 3999. How-

ever, screens that are registered as window screens cannot be displayed inde-

pendently like normal (standard) screens.

Base screen

Keypad

Touch switch for opening

the window

Window displayed on the screen

at the registered size and position

Window screen

Window area

Keypad



Windows can be called anytime, regardless of which screen is currently dis-

played. It is possible to display multiple windows (max.: 3) on the same screen,

and to open, close or move windows by the control from the host.

With PT, up to three windows can be displayed at the same time.

One of these windows is called a global window. This window can be displayed

all the time, regardless of which screen is currently displayed.

Other two windows are called local windows. These windows can be displayed

by linking to the currently displayed screens. When the screen is switched, the

local window is closed automatically.

For details, refer to 2-15 Window Function (page 237).

Window Screens

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