Simulation System Based On Virtual Simulation Of The Plc

The programmable logic controller(PLC) passes by to be close to 30 years of development, has already become one of three major of pillars of the industry control realm. Compared with the fast development of the PLC application in our country, the domestic PLC teaching can not yet keep up with the demand of the market, this mainly is because there is the limitation in the teaching of PLC viz. laboratory construction. Based on analyzing the existent problems currently in the PLC laboratory construction and combined with the computer multimedia teaching technique and computer emulation Technique, a kind of new experiment teaching means, the PLC emulation experiment teaching, is put forward, and it's implement is studied. The main work is as follows:1. To analyze the shortage of the domestic PLC laboratory construction, and put forward applying the computer technique to the PLC teaching experiment and establishing the PLC imitation demo system.2. The whole function of the PLC imitation demo system is expatiated, mainly including these modules, such as the emulation demo, the management, the pinboard and the correspondence. Based on this, the emulation demo module and the management module and the pinboard module are further divided into to son modules.3. As far as the PLC of the Mitsubishi FX2—32MR series, the design of the software and hardware of the pinboard module is researched, and in the hardware part including the correspondence electric circuit and the systems expanding interface electric circuit and the reading and writing PLC port electric circuit, and in the software part including the program design of the whole system, and the program design of read and write the port of PLC.4. After studying the design of the correspondence module of the system, mainly including the choice of the system network structure and the correspondence between top machine and bottom machine, the protocol implement method is discussed at length.5. The design of the imitation demo and management module is studied deeply, mainly including these modules, such as: the parts database ,the preparation, the experiment management database ,the imitation demo and the correspondence, and the database system is built up.6. To take the machine hand as a concrete application to introduce the system.