Appendix A Glossary
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Pages The combination and manipulation of pages
containing objects within projects forms the basis
of CX-Supervisor. More than one page can exist
for each project. The pages in a project provide
the visual aspect of CX-Supervisor corresponding
to a display with the objects contained in each
page providing a graphical representation of the
system being monitored.
Pixel A single displayable point on the screen from
which a displayed image is constructed. The
screen resolution of the computer's Visual Display
Unit (VDU) is defined by the number of pixels
across and the number of pixels down (e.g. 1024 x
768).
PLC Programmable Logic Controller.
Point A point is used to hold a value of a predefined type
- Boolean, Integer, Text, etc. The contents of a
point may be controlled by an object or I/O
mechanism such as DDE. The contents of a point
may control the action or appearance of an object,
or be used for output via an I/O mechanism.
Project A CX-Supervisor application will consist of one or
a number of pages linked together. The pages
may contain passive or active graphics, text or
animations, and may be grouped together logically
to form a project. A project may consist of many
pages, or simply a single page. Projects may be
built and tested within the CX-Supervisor
development environment, and run stand-alone
under the CX-Supervisor run-time environment.
Only one project at a time may be open for editing
within the CX-Supervisor development
environment.
Run Time Environment Applications are run using the run-time
environment of CX-Supervisor, following creation
of the application in the CX-Supervisor
development environment.
SCADA Supervisory Control and Data Acquisition.
SVGA mode A mode of video display that provides 800 600
pixel resolution (or higher) with 16 or more colours
and is supported on Super Video Graphics
Adapter systems.
Topic Within the CX-Supervisor script language, Topic is
used in DDE functions to specify a file name
pertaining to an outside application. Using DDE
functions, CX-Supervisor allows the opening of a
file, part of the server application.
VGA mode A mode of video display that provides 640 480
pixel resolution with 16 colours and is supported
on Video Graphics Adapter systems.