A safe programmable electronic system

Bulletin of the Polish Academy of Sciences. Technical Sciences

M. ?nie?ekFaculty of Electrotechnics and Informatics, Rzeszów University of Technology, 2 Pola St., 35-959 Rzeszów, PolandOther articles by this author:De Gruyter OnlineGoogle Scholar¹  W. HalangFernuniversität, Lehrstuhl für Informationstechnik, 58084 Hagen, GermanyOther articles by this author:De Gruyter OnlineGoogle Scholar² 

[1] Faculty of Electrotechnics and Informatics, Rzeszów University of Technology, 2 Pola St., 35-959 Rzeszów, Poland;Fernuniversität, Lehrstuhl für Informationstechnik, 58084 Hagen, Germany

关键词: Keywords: programmable electronic systems;    safety;    fail-safe comparison;    function block programming;    software verification;   

DOI  :  10.2478/v10175-010-0040-4

学科分类：工程和技术（综合）

来源: Polska Akademia Nauk * Centrum Upowszechniania Nauki / Polish Academy of Sciences, Center for the Advancement of Science

【 摘 要 】

A dual-channel computer architecture for utilisation in programmable logic controllers is presented. Faults can be detected by novel high-speed comparators with fail-safe operation. The cyclic operating mode of PLCs and a specification-level, graphical programming paradigm based on the interconnection of application-oriented standard software function modules are architecturally supported. Thus, by design, there is no semantic gap between the programming and machine execution levels enabling the safety licensing of application software by an extremely simple, but rigorous method, viz., diverse back translation.

【 授权许可】

Unknown