Automatic program generation for PC-based sequence control problems

N. U. Gunasena, E. A. Lehtihet

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


This paper describes a software tool for the automatic generation of ladder diagrams used in sequence control problems with programmable controllers. Input to the system consists of precedence relationships among activities and a functional description of input and output devices. A network representation of sequence control problems is introduced. The status of the control system at different instances of the operational cycle is progressively constructed based on input information. Two methods for the deduction of ladder diagrams using the notions of event and activity states are described. The concepts are illustrated with an example.

Original languageEnglish (US)
Pages (from-to)109-120
Number of pages12
JournalJournal of Manufacturing Systems
Issue number2
StatePublished - 1991

All Science Journal Classification (ASJC) codes

  • Software
  • Control and Systems Engineering
  • Hardware and Architecture
  • Industrial and Manufacturing Engineering


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