Design and implementation of ladder diagram editor in PLC experiment based on Internet
Zhu Shan-an · Mechanical & Electrical Engineering Magazine · 2008
Programmable logic controller(PLC) is widely used in industry.PLC experiment system based on Internet is a remote experiment system using real physical equipments.The client of PLC experiment system has to offer a function to edit ladder diagram for users and convert it into instruction list.Developed with Visual C++,the editor was designed by abstracting ladder diagram to directed graph,and recursion was used to design the algorithm for converting ladder diagram into sentence list.The function for editing ladder diagram and converting it into sentence list has been implemented and can be effectively used in other systems.