Abstract
This paper describes the process of the PLC experimental design. Its main content is use the software SIMATIC WINCC to simulate monitoring the crossroads of traffic lights. The article introduces the PLC Programming of traffic light control system and how to use the software SIMATIC WINCC to simulate monitoring the crossroads of traffic lights. Its raised the requirements of the control of traffic lights and introduced The program design process in the design of the PLC program. Including: the definition of Input / Output ,design of the SFC, use the software STEP7 programming. The PLC Programming of traffic light is a basic work, The main content of design is use the software SIMATIC WINCC to simulate monitoring the crossroads of traffic lights. In the simulate monitoring of traffic lights. Its introduced the communications between WINCC and PLC S7-300. Creates and set up the configuration variables, Process screen’s design, how to implement the dynamic of Process screen’s objects, and the running of the WINCC analog control system.
Keywords: PLC WINCC Traffic lights