Implementation of Ladder Diagram Edit Module of Soft PLC Development System
Jie Xin Wang · Modular Machine Tool & Automatic Manufacturing Technique · 2010
This paper presents an approach of editing ladder diagram,which can be used to develop the editor of the Soft PLC with the C++language successfully.The software provides the fuctions of drawing,editing,saving and opening ladder diagram,and its advantages are as follow: the structure of the software is relatively simple;the parameters of the PLC device unit can be directly set on the ladder diagram;with uniform standards and good scalability;the complex PLC ladder diagram can be intuitively expressed.