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Mapping from Ladder Diagram to AOV Graph in Embedded PLC
Author(s): 
Pages: 993-995,1004
Year: Issue:  10
Journal: COMPUTER MEASUREMENT & CONTROL

Keyword:  梯形图AOV图嵌入式PLC;
Abstract: 阐述了将梯形图映射为AOV图链的思想与实现算法.视梯形图图符为顶点,图符与图符间的拓扑连接为弧,将梯形图划分为一系列独立的AOV?关键技术在于在采用双向链表描述梯形图的基础上,对梯形图进行二次抽象.首先依据图的拓扑关系划分双向链表,得到一系列独立的功能块,再将功能块映射为AOV图,从而完成整个过程.所提出的依据图的拓扑关系划分链表的思想,保持了图结构的完整性,将梯形图化整为零处理,简化了程序设计,为从图的角度研究梯形图向语句表的转化打下基础.
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