Wireless networks are beginning to be employed in industrial automation systems as extensions of field networks (fieldbuses), in order to link devices which may not be equipped with a wired connection. In this way, all the benefits deriving from the use of a fieldbus may be maintained. This paper investigates a wireless extension of Profibus DP, one of the most popular fieldbus standards, based...

Executive Overview ..................................................................... 3 Safety and Availability: Two Sides of the Same Coin ....................... 4 Business Drivers in Process Automation and Safety.......................... 5 PROFIBUS and PROFIsafe Build the Foundation for Process Safety ..... 7 Case Study: Profisafe in a Pipeline Compressor Station ................... 11 R...

Zusammenfassung. PROFIsafe [1] ist ein nach IEC 61508 [6] entwickeltes und geprüftes Sicherheitsprofil für die weit verbreiteten Feldbusprotokolle PROFIBUS [7] und PROFINET [8]. Es wurde von einem Konsortium von mehr als 20 internationalen Herstellern und Endanwendern definiert. Der 2007 publizierte IEC-Standard [9] enthält informelle, semiformale und formale Bestandteile. In diesem Papier beri...

The main goal of this paper is to develop an integrated general-purpose simulator for the Profibus MAC layer protocol in order to evaluate the steady-state behavior of this protocol, under a variety of possible operational conditions in a faulty communication channel. This protocol is part of the Profibus-DP system used widely as a standard and popular industrial communication system. This work...

The problem of providing a hybrid wired/wireless communications for factory automation systems is still an open issue, notwithstanding the fact that already there are some solutions. This paper describes the role of simulation tools on the validation and performance analysis of two wireless extensions for the PROFIBUS protocol. In one of them, the Intermediate Systems, which connect wired and w...