Topology aspects in EtherCAT networks

Knezic, Mladen; Dokić, Branko; Ivanovic, Zeljko

doi:10.1109/epepemc.2010.5606688

Cited by 15 publications

(11 citation statements)

References 7 publications

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“…The topology of the subnetworks can be chosen freely and has no considerable effect on the overall functional behavior of the communication system. Depending on the chosen technology, hardware, and protocol implementation the overall data throughput and the transmission delay will change slightly according to the number of devices in use and to the corresponding control data overhead, as shown for EtherCAT in [14].…”

Section: System Setup and Network Topologymentioning

confidence: 98%

Runtime-reconfigurable communication concept for real-time measurement and control

Brugger

Kreiner

Thurner

2012

2012 IEEE International Instrumentation and Measurement Technology Conference Proceedings

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In the field of communication between the variant sensor and actuator devices in measurement and instrumentation systems, currently a change of key technologies is underway: The traditional field bus concepts are replaced by state-of-the-art communication systems. Many of these new designs are based on Industrial Ethernet. This paper presents key requirements for an Ethernet-based communication network which is reconfigurable at runtime and provides hard real-time behavior. Based on these requirements an architectural and topological concept is developed and one of the currently leading industrial solutions, EtherCAT, is examined in respect of using it as communication protocol in the proposed system architecture.

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Section: System Setup and Network Topologymentioning

confidence: 98%

Runtime-reconfigurable communication concept for real-time measurement and control

Brugger

Kreiner

Thurner

2012

2012 IEEE International Instrumentation and Measurement Technology Conference Proceedings

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“…The frame is processed on-the-fly and, consequently, each station only induces small delay when the frame passes by. It should be noted that the station delay can be influenced by network topology [13].…”

Section: Analysis Of Ethercat-enabled Systemmentioning

confidence: 99%

EtherCAT-enabled next generation Baggage Handling Systems

Xie

Lim

2013

2013 IEEE 18th Conference on Emerging Technologies &Amp; Factory Automation (ETFA)

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Communication networks are essentially the backbone of industrial automation systems such as Baggage Handling Systems (BHS) and are experiencing technological transition from traditional fieldbus to Real-time Ethernet (RTE). EtherCAT is evolving into one of the fastest RTE protocols due to its unique "processing on-the-fly" characteristic. This paper presents how EtherCAT can be the key technology for the innovative next generation BHS. Network performance indices such as communication delay and cycle time are analyzed and discussed in comparison with fieldbus to illustrate the applicability of EtherCAT in BHS. A case study of baggage handling application is given to demonstrate the advantages of EtherCAT-based architecture.

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“…EtherCAT utilizes summation frame principle together with logical addressing to pack all payloads into possibly one single frame. As a result, all payloads share the same Ethernet and possibly EtherCAT overheads [5]. This approach makes Ether-CAT outstanding in terms of data coding efficiency (generally higher than 90%).…”

Section: Introductionmentioning

confidence: 95%

Network delay analysis of EtherCAT and PROFINET IRT protocols

Xie

Lim

2014

IECON 2014 - 40th Annual Conference of the IEEE Industrial Electronics Society

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Real-time protocols originated from standard Ethernet technology have been gradually developed over the last decade. Candidates of real-time Ethernet protocols are EtherCAT and PROFINET IRT from Beckhoff and Siemens, respectively. In contrast to standard Ethernet, data-link layers of both Ethernet-like networks are modified from IEEE 802.3 in order to improve real-time capabilities for critical communications. Network delay refers to data transfer time on a network. It is of great importance to assess this parameter for industrial networks as it can possibly make significant impact to the control system performance. This paper gives network delay analysis on EtherCAT and PROFINET IRT in the context of industrial applications. Delays are formulated and then evaluated under both synchronous and asynchronous system configurations. Simulation results demonstrate that both protocols are of realtime guarantees in data transfer. However, each protocol has its own characteristics and strong points due to different MAC layer design.

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Topology aspects in EtherCAT networks

Cited by 15 publications

References 7 publications

Runtime-reconfigurable communication concept for real-time measurement and control

Runtime-reconfigurable communication concept for real-time measurement and control

EtherCAT-enabled next generation Baggage Handling Systems

Network delay analysis of EtherCAT and PROFINET IRT protocols

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