The application of OOP(original-object program) in PLC programming greatly improves the programming efficiency and maintainability.

The idea and the PLC program design method of the NC boring and milling machine were elaborated,and the PLC program design of machine tool panel which specified by user and the electric design of using facing head to realize theboring, milling and turning multiple processed were described.

The authors point out that the initial breakdown of NC machines might be diagnosed in the light of PLC program, and make explanations to the principle and approach of its diagnosis.

Explained detailedly are the building of basic paramrters and standard PLC program,optimization of speed control module and user-defined alarm set.

On the actuality and program design of exploitation of cost system for construction of water conservancy projects;

Signal processing technology in program design of monitor LCU for Three Gorges Hydropower Plant;

Calculating method and program design for insulation layer thickness of cold air distribution duct;

Training and Practice of Numerical Method and Programming Design in Teaching Chemical Engineering Principles;

An example of the PLC programming method in modular machine tool automatic control;

Programming on the Data Processing of the Foundation Course of Chemical Engineering Experiment;