Design And Implementation Of PLC Experimental System Based On Configuration Software

Programmable logic controller (PLC) is an important device in the industrial process control. With the unceasing development of industrial automation technology, its applied range is expanding constantly. To colleges and universities which cultivate talents of professional engineers, PLC teaching is particularly important. This paper is brought up based on the purpose of improving PLC experimental teaching device and the quality of experiment teaching.This paper analyzed the current condition of domestic PLC experimental teaching at present and summarized the existing problems of experimental teaching equipments in many universities, then propounded a new PLC experiment system based on industrial monitoring configuration software which is in combination of the base of previous studies. Secondly, planned the overall design proposal, software, hardware, function and components of every experiment subsystems of the virtual PLC experiment system according to the design requirements. Finally, according to the overall design proposal, completed the designing and making of PLC experiment controller box, communication connection design, development of each experimental subsystem's configuration project, and touch screen project, and design of PLC control program, etc. In addition, in order to make this system get a better expansibility, use DDE technology to realize communication between the virtual PLC experiment system and Matlab, through Matlab to expand the control functions.After completing, through test and operation shows that the picture of system is intuitive and vivid, this system can simulate the real control field, the manipulation is convenient and the price is low, it can achieve the desired effects, and provide a reliable guarantee for actual application of this system.