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A Study on the Design of an Elevator Driving Control Circuit Using SFC Language  

Lee Sang-mun (창원대학교 전기공학과)
Kim Min-Chan (창원대학교 전기공학과)
Kwak Gun-Pyong (창원대학교 전기공학과)
Abstract
Ladder Diagram(LD) is the most extensively used among PLC standard language for the design of control system. But LD has the disadvantages for data processing and maintenance. On the other hand, the Sequential Function Chart(SFC) graphic language is very powerful for describing the sequential logic control algorithm. SFC is based on flow chart, so control flow understanding is very easy and divergence can possible improving its ability. In this paper, we propose the efficient management elevator system using the action qualifiers and choice divergence. From the result, we confirm the SFC language reduced program memory capacity and processing time is faster than LD language.
Keywords
PLC; SFC language; Elevator control; Divergence;
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