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According to the votes from friends, the top-ranked PLC communication protocol that you most want to know about is still the EtherCAT bus communication protocol. The reason it ranks first will become clear through a series of articles introduced below.
Results of the poll “What PLC communication protocols do you most want to learn about?” and the plan for the most comprehensive analysis and sharing of PLC communication protocols and examples.
Now, regarding the EtherCAT bus, we will introduce the following aspects, and if there are any inaccuracies or additional content needed, please leave a message in the comment section for discussion.
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EtherCAT and EtherNet
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EtherCAT Operating Principle (On the Fly)
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EtherCAT Synchronization (Distributed Clock)
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EtherCAT Performance
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EtherCAT Flexible Topology
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EtherCAT Simple Configuration and Low Cost
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EtherCAT Replacing PCI
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EtherCAT Device Standards (EoE FoE SoE, etc.)
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EtherCAT Security
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EtherCAT Redundancy
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Implementation of EtherCAT Master
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Implementation of EtherCAT Slave (including chip models, etc.)
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EtherCAT Openness (ETG)
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Application Fields and Cases of EtherCAT Products
Definition
EtherCAT (Ethernet for Control Automation Technology) is an open architecture, Ethernet-based fieldbus system. EtherCAT is a deterministic industrial Ethernet, first developed by Beckhoff Automation in Germany in 2003, became an international standard in 2007, and was adopted as a national standard in China in 2014.
Automation generally requires short data update times (or cycle times), low communication jitter during data synchronization, and low hardware costs. The purpose of developing EtherCAT is to enable Ethernet to be used in automation applications. The emergence of EtherCAT has set new standards for the real-time performance of systems and the flexibility of topology.
Global EtherCAT Node Count
According to data from the ETG official website, there are a total of 77 million EtherCAT nodes worldwide, including 18 million added in 2023.
The above figure shows that since 2020, the number of nodes added each year has rapidly increased and the trend has been maintained.
The number of members in the EtherCAT Technology Group (ETG) is also continuously growing. ETG has over 7,600 member companies from 74 countries, making it the largest fieldbus user organization in the world. Despite the current challenging economic situation, membership has even accelerated growth over the past 12 months, with ETG reporting over 500 new members in 2023.
The reason for such strong growth will be explored further, so please stay tuned!
Share Link
All reference materials for this series of articles have been compiled into the following link (including the PPT materials shared by Teacher Chen in the previous issue). Friends who need it or want to preview can download:
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Link: https://pan.baidu.com/s/1lL4wvsyoAVxArpqWERBvoQ |
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