FPGA-based EtherCAT master-slave station design and implementation method

Abstract

The invention discloses an FPGA (Field Programmable Gate Array)-based EtherCAT master-slave station design and implementation method. A scheme for realizing an EtherCAT master-slave station is proposed by adopting an FPGA as a controller on the premise of not using a foreign special controller and a commercial master station. In the initialization stage, an EtherCAT master-slave station initialization design scheme is provided to detect the topological structure of the master-slave station and the number of the slave stations, and the functions of parameter setting, parameter obtaining and thelike are completed. In the data frame sending and receiving stage, after the master station sends a data frame containing a plurality of sub-messages to the slave station equipment, the slave stationneeds to quickly, efficiently and accurately take out the corresponding sub-message and write the data to be sent into the data frame, and the data frame continues to be forwarded to the next slave station. And the last EtherCAT slave station sends back the processed data frame, and communication is ended. According to the invention, a reference basis is provided for establishing an EtherCAT master-slave station in different industrial application occasions.

Description

technical field [0001] The invention relates to the field of industrial Ethernet, in particular to an FPGA-based EtherCAT master-slave station design and implementation method. Background technique [0002] With the development of industrial automation, the traditional fieldbus technology can no longer meet the needs of modern industrial automation due to the problem of bandwidth and utilization. Real-time Ethernet, known as the second-generation industrial network, has received more and more attention. With the introduction of Industry 4.0, Ethernet is more closely integrated with industrial automation. At present, real-time Ethernet has become an indispensable technology in the field of industrial automation by virtue of its mature characteristics. [0003] As a representative of high-performance industrial Ethernet, EtherCAT (Ethernet for Control Automation Technology) has developed rapidly due to its advantages of low latency, high speed, and flexible topology, and has ...

AI Technical Summary

Problems solved by technology

[0002] With the development of industrial automation, the traditional fieldbus technology has been unable to meet the needs of modern industrial automation due to bandwidth and utilization issues.

Images