The Research and Application of Original-Object Structured on PLC Programming
Haiyan Zeng · Techniques of Automation and Applications · 2010
The paper describes the object-oriented structured design principle of PLC programming,and its implementation with the example of a PLC control system for multiple electromagnetic valve objects.Also for forming a more regular and complete sub-function framework model,the state transfer diagram is applied to the main sub-function module of system.The rational program structure and good program pattern may lower the difficulty of program development process,increase the readability of program and the maintainability of the system.