Appendix A Glossary 41 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.