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Section D
Graphic Display
D-5
D 1 General Description - Graphic Display
In addition to the standard displays, custom graphic displays for observation and operating the
process can be used on an operator station. These graphic displays can be created with the
DigiTool graphic editor. The state of a process can be depicted in numerous respects with such
graphic displays. The static and dynamic graphic objects available make possible a varied
graphic representation of the running process. Use of the various animation options makes it
possible for the plant operators to observe process events in context at all times.
Each graphic display consists of static and dynamic elements. The static elements are made
up of basic objects, such as lines, circles, texts and bitmaps. Available as dynamic elements
are special graphic objects (such as alphanumeric displays and bar graphs) with which current
process values can be displayed, either as numeric values or graphically. Operable elements
form another category; they can be used to trigger a display switch, call up a tag allocation
faceplate, acknowledge a message or write values to process variables. The states of the
dynamic display elements in DigiVis are determined by the values of the assigned variables
and messages in the Freelance 2000 common data base.
Graphic symbols can be created from several single graphic objects. These new objects can
then be processed further, just like any single graphic object. Graphic objects may also be
defined as macros and stored in macro libraries. These libraries can be used as often as
required, even in other projects.
The size of the
draw area
can be adjusted to suit the monitor settings (640x480, 1024x768 or
1600x1200 pixels).
The size ratio, as well as the current position of the cursor in the drawing area, are displayed in
a
toolbox
.
Further functions include the editing of two displays simultaneously. The first display is a
named program in the project tree. The second display, called the
graphic pool
, possesses
the same graphic characteristics as the other display and is always loaded simultaneously with
the project. In the graphic pool display, complete displays, partial displays or graphic symbols
can be temporarily saved for later use. The contents of the graphic pool are retained when
another display is selected.
A number of 3D-effect graphic objects have been pre-prepared to help create complex process
displays.
These
graphic
objects
can
be
found
in
the
exported
graphic
displays
Aggregates.dmf, Alphanumeric.dmf, CompController.dmf
as well as
Objects1.dmf
and
Objects2.dmf
on the installation CD; a
readme.txt
file is also included.
Gross Automation, 1725 South Johnson Road, New Berlin, WI 53146, www.ssacsales.com, 800-349-5827
Содержание Freelance 2000
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