Automatic control function programming manual ladder language

8.3 Panel Transparent Mode
8.3.1 Use of the Panel Screen
The screen, with a definition of 640 x 480 pixels, is divided into four windows. A communication channel and a context
are associated with each window. The display manager uses all the channels and saves the contexts.
REMARK Each window is considered as a screen.
8.3.1.1 Definition of a Window
A window is defined by its size and its position in the screen.
For each window, there is an alphanumeric space and a graphic space which have their own context (colour, font, etc.).
These spaces are positioned in the displayable area of the window.
REMARKS The windows overlap.
The spaces are overlaid.
8.3.1.2 Definition of the Alphanumeric Space
This space is used to display ASCII characters (in pixels) on lines and columns and to control the cursor.
REMARK Display of an alphanumeric character overwrites the element previously displayed,
whatever its space.
8.3.1.3 Definition of the Graphic Space
This space is used to display texts (in pixels) and graphic data.
Two reference systems (screen and user) are available. It is possible to combine the two reference systems in the same
space.
REMARK An element is displayed in the graphic space overlays the element previously
displayed, whatever its space.
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