The Research And Implementation Of PLC Based On IEC61131

As a standard programming language of automation control system,IEC61131 standard is widely used in the world. Many Companies have developed their control systems based on this standard,therefore It's very important to develop the control systemof that style.Based on the content about Function Block configuration in IEC61131-3 and communication module in IEC61131-5,Develop the basic programming concept and instruction rule. The Implementation of PLC base on IEC61131 is the main task in this projectjncluding the definition of programming module and communication module.The programming module includes software programming and variable communication.The Communication module supplies a way for PLC communication and I/O extension.The Program in the controller is developed based on Rabbit2000 CPU. The management program include I/O communication,user code download and upload,password protection. User program include execution of the program and so on.Develop a Configuration software named PLC_Config. This software is developed on Windows operating system and VC++. It is a visible and graphic configuration software. All the software and hardware design of the devices can be configed using PLC_Config. As a moudled softwarejt's divided into many parts like Device management, Visible configuration,Device monitor,File management and Communication Management.Based on a project of cement mixing control system, design a control system using this control module. Develop the system design, chart flow, parameter setting and reach to the system requirement. By the research and application in the field, The controller is verified in the theory and field application. It has many advantages in system opening, human resource saving,software reusing.