Master Design And Application Of System Is Based On EtherCAT Industrial Ethernet Field Control

With the rapid development of network technology, the rapid spread of industrial Ethernet as new typical fieldbus technology has created conditions for networkization of the industrial automation control systems. EtherCAT bus Which is based on industrial Ethernet with its flexible network topology structure,simple system configuration,high-speed data transmission,efficient and low cost characteristics has become the direction of the current and future development of industrial real-time Ethernet technology. To carry out research and development of interface technology and related products based on EtherCAT bus has important practical significance for enhancing the level of China’s industrial automation.This thesis is under the background of EtherCAT-based Industrial Ethernet field control system, focus on researching EtherCAT bus protocol, master control system architecture, hardware and software designing and system testing methods.Firstly, this thesis introduces the research status and development of Industrial Ethernet. It elaborates the working principle of industrial Ethernet and EtherCAT bus,and analyse the EtherCAT bus protocol deeply.Then, this thesis analyse the overall structure of the system detailly.It combines the EtherCAT Industrial Ethernet technology with the Embedded ARM technology,and proposeds hardware design scheme based on EtherCAT master system. In this part,it discusses detailly about the key technologies and design of ecah functional unit of the master circuit diagram.,and it completes the pcb layout design finally.EMC design is increased in the hardware design process in terms of improving the stability of the system performance.After that, in this part,it proposes a architecture of real-time control system based on Linux operating system.It introduces software systems development platform and system architecture,and it analyse the realization mechanism of the communication from the EtherCAT master station to the slave station. Through developing the application layer module, system software design has been completed.At last, setting up test platform on the basis of completed desing of hardware and software. Chosing the EtherCAT Bus Coupler BK1120and I/O modules (KL2809, KL1809) produced by the company of BECKHOFF as slave system, and with the EtherCAT master designed by this thesis to set up the test platform and then executing test and analyzing result. Final result shows that:the EtherCAT master’s solutions meet the design requirements.