Architecture of a Safe Node for a Fieldbus System

T. Novak, T. Tamandl

Research output: Chapter in Book/Report/Conference proceedingsConference contributionpeer-review

14 Citations (Scopus)


Fieldbus systems are more and more responsible for functions affecting people's health. Therefore they are supposed to work safely, i.e. the fieldbus system must be free from unacceptable risk. Thus different measures specified in the international standard IEC 61508 have to be taken to reduce the risk, for example, a redundant hardware structure, add-ons to the protocol, integration of online self tests. A fieldbus system that is going to be enhanced with safety measures is the Local Operating Network (LON), standardized in EN 14908. Within the SafetyLon project hardware and software of a safe node for LON is developed. A safe node consists of an EN 14908 controller and two microcontrollers. The software comprises three layers. One of them is the safety layer including the safe protocol stack and the online self tests.
Original languageEnglish
Title of host publicationINDIN 2007 Conference Proceedings - 5th IEEE International Conference on Industrial Informatics
Number of pages6
ISBN (Print)1424408644, 9781424408641
Publication statusPublished - 27 Jun 2007
Externally publishedYes
Event2007 5th IEEE International Conference on Industrial Informatics - Vienna, Austria
Duration: 23 Jun 200727 Jun 2007

Publication series

NameIEEE International Conference on Industrial Informatics (INDIN)
ISSN (Print)1935-4576


Conference2007 5th IEEE International Conference on Industrial Informatics

Cite this