S7-300-based Sequential Logic Control Simulation System Design And Research

This paper mainly describes the design and realization of the logic control simulation system which is based on the modular process system. According the building requirements and aim of PLC control simulation laboratory and the demand of our country for the people with automation technology, the author completes the whole design of the logic control simulation system and platform based on S7-300 PLC.Based on the analysis of the process and the control parameters of the real modular process system, the author used SIEMENS the STEP7 programming software, the SIMIT simulation software, FESTO Corporation FluidSIM-P air operated electricity simulation software as well as DDE communication software Vswitch, simulates the real modular processing experiment system's work process, has constructed a simulation industrial system which combines the control and the control plant, and using Flash software design simulation system's management platform. Meanwhile, the author discusses the problems during the realization and application of the simulation system. At the end of this article, the author has carried on the forecast to the future Web laboratory network construction and future modular.The realization of the simulation system solves the problem of the inadequate equipment and fund in the laboratory building, also establish a good standard experiment platform to provide comprehensive automation skills training for the automation technology learner. So the students can master the design of system, and can be trained to have good engineering sense and strong practical ability step by step.