Abstract
Supervisory control system represents a central unifying part of information and control system of industrial plant processes. Particularly at present, supervisory control applications even allocates a big share of factory software investments. The fundamental goal of projecting supervisory application is to establish stable and fast communication with technological process level to obtain data from processes and to design visualization screens in a suitable form to ensure readily visible information and control functions of processes in a plant. That is realized by visualization screens developed using graphical objects from different fields of industries which gives system builders much more effective tools for designing of visualization application and better visibility of process elements on screen. It is very closely related to trend objects used in visualization as monitoring components. This article presents concept of trend objects used in visualization screens of supervisory control application using software products from Wonderware Corp.
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