Commitment We are and will remain the world's leading organization in the field of digital networking for industrial and process automation, serving our customers, our members and the press with the best solutions , benefits and information. We are committed to setting and protecting the standards for open communication and control in the automation and process market. Introduction From the out...

Mobility and reduction of industrial activity time is one of the major requirements raised to modern systems of automation. One of the most effective ways of achievement of this purpose is vertical integration with use of wireless technologies. The lab set – model of vertical integration for data gathering from the intellectual Profibus РА sensor, Profibus DP data transmission, controllers conf...

The PROFInet architecture defined by the PROFIBUS user organisation is more than a communication standard. It defines a vendor-independent engineering model covering plant-wide automation. With regard to communication it is based on DCOM, thus using TCP/IP and Ethernet. Its component-based approach goes beyond OPC’s tag-based approach. Functionally PROFInet extends the configuration and diagnos...

In this paper we survey the most relevant results for the priority-based schedulability analysis of real-time tasks, both for the fixed and dynamic priority assignment schemes. We give emphasis to the worst-case response time analysis in non-preemptive contexts, which is fundamental for the communication schedulability analysis. We define an architecture to support priority-based scheduling of ...

In this paper we investigate the properties of the PROFIBUS MAC protocol when operated over error prone links, like wireless links. In order to show that the protocol is very sensible to loss of control frames (e.g. token frames) we evaluate three performance measures, using a simulation approach: the mean delay, the mean station outage time and the cumulated outage time, i.e. the fraction of t...

Since 1989, PROFIBUS has developed into a worldwide leading fieldbus system used in machine and process plant automation. The main reason why PROFIBUS stands out from other fieldbus systems is because it offers such an extraordinary breadth of applications. Application specific requirements have been integrated into application profiles, and these applications have been combined as a whole to c...

As numerous sensors and actuators are used in many automated systems, various industrial networks are adopted for real-time distributed control. In order to take advantages of the networking, however, the network implementation should be carefully designed to satisfy real-time requirements considering network induced delays. This paper presents an implementation scheme of a networked control sy...