PLC语句表向梯形图自动转换的实现方法

Implementation Method for Automatically Translation of PLC Statement List into Ladder Chart

实现可编程控制器语句表向梯形图的自动转换,是提高可编程控制器应用系统的维护和改造效率亟等解决的问题.文中通过对PLC指令及其对应的梯形图图符进行分析,总结出由PLC语句表生成梯形图的规则,并分析软件实现的主要数据结构及其关键技术.实验结果表明,软件能正确实现PLC语句表向梯形图的自动转换,可广泛应用于PLC应用系统的设计,改造和维护.

For automatically translating statement list of programmable logic controller (PLC) into ladder chart, the author presents here an implementation method; and discusses in detail the principal data structure and its key technology of software implementation. This software can be widely applied to design, remould and maintain the system, It has a fairly good value of practical use and prospect of application.