Algorithm of Transformation from PLC Ladder Diagram to Structured Tezt

摘要：

An algorithm of transformation from PLC ladder Diagram (LD) to structured text (ST) based on treating LD components separately in accordance with their type after Analysis of the IEC 61131-3 standard PLC LD and ST. In this algorithm Virtual node is introduced, and then it is combined to establish activity on vertex (AOV) diagraph. Nodes are treated according to their type and the topological sorting of the AOV diagraph, then the transformation from LD to ST is achieved. The rules of treating the nodes and a transformation are present. The algorithm is a general transformation algorithm for transformation any complex LD to ST. It is applied to Lantian series numerical control system successfully in National Engineering Research Center for High-End CNC.

关键词： Ladder Diagram Structured Tezt IEC 61131-3 AOV diagraph

作者: Liuwen Huang Wei Liu Zhanqing Liu

作者单位: Graduate University of Chinese Academy of Sciences,Beijing 100039,China National Engineering Researc National Engineering Research Center For High-End CNC,Shenyang Institute of Computing Technology,CAS

会议类型: 国际会议

会议名称: 2009 9th International Conference on Electronic Measurement & Instruments(第九届电子测量与仪器国际会议 ICEMI2009)

会议地点: 北京

会议语种:英文

页码: 4006-4010

在线出版日期: 2009-08-16（万方平台首次上网日期，不代表论文的发表时间）