Читать книгу Automation of Water Resource Recovery Facilities - Water Environment Federation - Страница 166

Flow charts visually display process logic that will be executed in field controllers or the supervisor control system. Flow charts represent the control algorithm or process using blocks to represent logic functions. A step or activity is represented as a rectangle, while an analysis or decision is represented as a diamond. Arrows link each block and display the flow of control logic. Flow charts allow complex “if, then, and, or” statements to be easily represented for implementation by the programmer and as a reference for the operator.