| 关于PLC梯形图到指令表转换算法的研究 |
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| 引用本文： | 阳俊将,黄道平,刘少君.关于PLC梯形图到指令表转换算法的研究[J].信息技术,2012(6):75-78. |
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| 作者姓名： | 阳俊将 黄道平 刘少君 |
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| 作者单位： | 华南理工大学自动化科学与工程学院,广州,510640 |
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| 摘 要： | 针对只有一条左侧母线且各个元器件及类型独立的梯形图,提出一种由可编程逻辑控制器(PLC)梯形图生成指令表的算法。在该算法中使用虚结点,先将梯形图转换为AOV图,然后根据结点类型和它们在AOV图中的拓扑排序将梯形图转化为指令表。该算法是一种能将任意复杂的梯形图转换为指令表的通用算法,它已经成功地应用于软PLC的设计。
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| 关 键 词： | AOV图 指令表 可编程逻辑控制器PLC 梯形图 |
Research on conversion algorithm for ladder diagram to instruction list in PLC |
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| YANG Jun-jiang
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HUANG Dao-ping
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LIU Shao-jun.Research on conversion algorithm for ladder diagram to instruction list in PLC[J].Information Technology,2012(6):75-78. |
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| Authors: | YANG Jun-jiang HUANG Dao-ping LIU Shao-jun |
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| Affiliation: | (School of Automation Science and Engineering,South China University of Technology,Guangzhou 510640,China) |
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| Abstract: | The paper presents an algorithm for generation of instruction list(IL) code from programmable logic controllers(PLC) ladder diagram(LD) based on treating LD as a tree with single root left bar and treating LD component separately in accordance with their type.This algorithm uses virtual nodes.The LD is presented as an activity on vertex(AOV) diagram.Then it establishes activity on a vertex to transform LD to IL.The algorithm for transformation from any complex LD to IL.It has been applied in the design of a software PLC and successfully complied to IL. |
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| Keywords: | AOV diagraph instruction list programmable logic controllers ladder diagram |
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