Omron NT31C Reference Manual page 47

PT Screens
Overlapping Screens
36
Normal (Standard) screens can be registered under any screen numbers in the
range 1 to 3999.
The PT allows up to 8 screens to be displayed overlapped as one screen. A
group of overlapped screens is called an overlapping screen.
To allow distinction, the screen that results when the multiple component
screens are overlapped is called the parent screen. and the individual compo-
nent screens are called the child screens.
Both parent screens and child screens can be registered under any screen num-
bers in the range 1 to 3999. Note that a new screen must be designated as a
parent screen.
[Parent screen]
Screen No. 8
This is an
overlapping
screen.
Child Screen Registration and Display Result
Child screens are created as normal (standard) screens. Therefore they can
also be displayed independently by designating their screen numbers.
Parent screens are special screens used for the purpose of displaying overlap-
ping screens. They are created by designating a new screen as a parent screen
at the Support Tool. Register only the screen numbers of the child screens to be
overlapped for this new screen. Direct registration of elements on a parent
screen is not possible.
To display an overlapping screen on the PT, designate the screen number of the
parent screen. The child screens will be displayed in the order they were regis-
tered (i.e., the first one registered will be the bottom-most screen) to build up the
compound image.
Note that the order in which the child screens are registered may affect the way
that overlapped screens are displayed.
Child screen 1
Child screen 2
Section
[Child screen]
Screen No. 10
This is an
Screen No. 7
overlapping
Screen No. 25
screen.
Registration order:
Child screen 1 → Child screen 2
Registration order:
Child screen 2 → Child screen 1
2-1