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Impact of mixed speed networks on the performance of Ethernet real time communication protocols like PROFINET

  • The trend towards the use of Ethernet in automation networks is ongoing. Due to its high flexibility, speed, and bandwidth, Ethernet nowadays is not only widely used in homes and offices worldwide but finding its way into industrial applications. Especially in automation processes, where many field devices send data in relative short time spans, the requirements for a safe and fast data transfer are high. This makes the use of industrial Ethernet essential. A new hardware-layer, specifically tailored for industrial applications, has been introduced in the form of Ethernet-APL (‘Advanced Physical Layer’). Ethernet-APL is based on the Ethernet standard and implements a two-wire Ethernet-based communication for field devices and provides data and power over a two-wire cable. The operation in areas with potentially explosive atmosphere is also possible. This enables a modular, fast, and transparent Ethernet network structure throughout the entire plant. However, by integrating Ethernet-APL into the field, industrial networks in the future will face the challenge of operating at varying datarates at different locations in the network, resulting in a ‘mixed link speed’ network. This can lead to limitations in packet-throughput and consequently to potential packet loss of system relevant data, which must be avoided. Therefore, the purpose of this thesis is to investigate the potential of packet loss in ‘mixed link speed’ networks.

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Author:Lukas Krapp
Advisor:Karl-Heinz NiemannORCiDGND, Holger Große
Document Type:Master's Thesis
Year of Completion:2023
Publishing Institution:Hochschule Hannover
Granting Institution:Hochschule Hannover, Fakultät I - Elektro- und Informationstechnik
Date of final exam:2022/09/30
Contributing Corporation:ABB AG
Release Date:2023/07/10
Tag:Ethernet APL; mixed link speed
GND Keyword:PROFInet; Automatisierungstechnik
Edition:Updated and corrected version
Page Number:229
Link to catalogue:1858115566
Institutes:Fakultät I - Elektro- und Informationstechnik
DDC classes:004 Informatik
Licence (German):License LogoCreative Commons - CC BY - Namensnennung 4.0 International