Proceedings ArticleDOI
Switched Ethernet for factory communication
E. Jasperneite,P. Neumann +1 more
- pp 205-212
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TLDR
The paper considers the impact of the dwell time within the stations upon real-time behavior and suggests a bus-like topology to enable fieldbus-like cabling qualities.Abstract:
Focuses on the special requirements of the control-level within factory communication systems to transmit real-time data via a switched Ethernet network. A performance evaluation of switched Ethernet is presented by providing simulation results. The simulations study the influence of different network topologies as well as the scheduling algorithms first-come-first-served and priority queuing within devices and intermediate systems, like switches. Furthermore we suggest a bus-like topology to enable fieldbus-like cabling qualities. Moreover the paper considers the impact of the dwell time within the stations upon real-time behavior.read more
Citations
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Ethernet-Based Real-Time and Industrial Communications
TL;DR: This paper details the requirements that an industrial network has to fulfill and shows how Ethernet has been enhanced to comply with the real-time requirements in particular in the industrial context.
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Communication in industrial automation—What is going on?
TL;DR: In this paper, the authors address the ongoing activities in the field of using heterogeneous networks within the automation domain, and mainly focus on context awareness realized by location-based communication services and context-sensitive applications.
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FTT-Ethernet: a flexible real-time communication protocol that supports dynamic QoS management on Ethernet-based systems
TL;DR: The FTT-Ethernet protocol employs an efficient master/multislave transmission control technique and combines online scheduling with online admission control, to guarantee continued real-time operation under dynamic communication requirements, together with data structures and mechanisms that are tailored to support dynamic QoS management.
Proceedings ArticleDOI
The FTT-ethernet protocol: merging flexibility, timeliness and efficiency
TL;DR: An overview about the work previously done towards real-time communication on Ethernet is presented and a new protocol, FTT-Ethernet, which relies on common network adapters and on a new transmission control named master/multi-slave that efficiently supports hard-real-time operation in a flexible way is presented.
Journal ArticleDOI
Timeliness of real-time IP communication in switched industrial Ethernet networks
TL;DR: In this paper, substation automation (power distribution) is used as an example of a demanding automation system and a priority-based protocol stack is assessed, showing that real-time, Ethernet-based IP communication is now adequate even for demanding automated applications.
References
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Proceedings ArticleDOI
Statistical real-time communication over Ethernet for manufacturing automation systems
TL;DR: A traffic smoother is employed which is located between the transport layer and the Ethernet datalink layer and smooths packet streams between the two layers, demonstrating the effectiveness of the approach in providing real time communication over Ethernet.
The design, implementation and evaluation of rether: a real-time ethernet protocol
TL;DR: RETHER is the first and only software implementation of a real-time protocol over existing Ethernet hardware and features a hybrid mode of operation to reduce the performance impact on non-real-time network tra c, a race-condition-free distributed admission control mechanism, and an e cient token-passing scheme that protects the network against token loss and node failures.
Proceedings ArticleDOI
Measurement, analysis and modeling of real-time source data traffic in factory communication systems
Jurgen Jasperneite,P. Neumann +1 more
TL;DR: The real-time communication behaviour of a high-grade automated installation in the discrete manufacturing is evaluated and the almost realistic modeling of the data traffic of automation devices plays a decisive part.
Proceedings ArticleDOI
WBTPE: a priority Ethernet LAN protocol
TL;DR: This paper analyzes a scheme for introducing priorities into the CSMA/CD protocol known as Ethernet, which allows for the rapid transmission of important messages, even under heavy traffic conditions.