An Embedded Control System Designed Based on Soft PLC

With the development of computer technology and established of IEC6113-3 standard,the development of soft PLC technology is strongly developed. Compared with the traditional PLC, Embedded control system based on soft PLC provides the advantage of powerful ability of data process, net communication and open system structure, which can meet the demands of the structure, price, power dissipation and portability of control system in the industry automation field. Based on this, the paper designed an embedded control system based on soft PLC. In the second part of the paper we divided the overall system architecture into hardware and software for detail introduce. Especially, it expounded the design concept of the extension control module of the hardware circuit and the implementation method of the soft PLC. the system has the advantages of compact structure, flexible configuration, good portability, high universality, it can widely used in small and medium-sized industrial control field.