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Strong real-time EtherCAT implementation system

A realization system, strong technology, applied in the field of strong real-time EtherCAT realization system, strong real-time EtherCAT realization system based on software and hardware cooperative work, can solve delay and other problems

Pending Publication Date: 2022-03-01
EAST CHINA INST OF COMPUTING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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  • Strong real-time EtherCAT implementation system
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Embodiment 1

[0035] like figure 1 As shown, this embodiment provides a strong real-time EtherCAT implementation system, including a MII receiving module, a dedicated processor module and an MII sending module, and the MII receiving module, a dedicated processor module and the MII sending module are all implemented with HDL logic.

[0036] MII receiving module: analyze the MII protocol, and obtain the analysis data. MII data receiving module includes MII data analysis module and receiving asynchronous FIFO, the input end of MII data analysis module is used to receive MII input signal, the output end of MII data analysis module is connected to the input end of receiving asynchronous FIFO, and the input end of FIFO is connected to special processing The MII data analysis module is used to analyze the MII protocol, and the receiving asynchronous FIFO is used to realize data buffering and cross-clock domain processing. The MII data analysis module identifies the timing MII interface signal, an...

Embodiment 2

[0040] Those skilled in the art can understand this embodiment as a more specific description of Embodiment 1.

[0041] MII: Media Independent Interface, also called Media Independent Interface, it is the Ethernet industry standard defined by IEEE-802.3, it includes a data interface, and a management interface between MAC and PHY, the data interface includes respectively for the transmitter Two independent channels with the receiver, each channel has its own data, clock and control signals, the MII data interface requires a total of 16 signals, the management interface is a dual-signal interface, one is a clock signal, the other is a data signal, Through the management interface, upper layers can monitor and control the PHY.

[0042] HDL: A hardware description language, a language that describes the structure and behavior of digital system hardware in text form. It can be used to represent logic circuit diagrams, logic expressions, and logic functions completed by digital log...

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Abstract

The invention provides a strong real-time EtherCAT implementation system. The strong real-time EtherCAT implementation system comprises an MII receiving module, a special processor module and an MII sending module, the MII receiving module is used for analyzing the MII protocol to obtain analyzed data; the special processor module is used for processing the analysis data through a processor to obtain processed data; and the MII sending module is used for converting the processed data into an MII format and sending the processed data to a network interface. The method is realized in an HDL language, and the advantages of software and hardware processing are combined, so that the EtherCAT has relatively high real-time performance and flexibility of a software scheme when being realized, and a topological structure can be flexibly recombined.

Description

technical field [0001] The invention relates to the technical field of EtherCAT communication in industrial automation control, in particular to a strong real-time EtherCAT realization system, especially a strong real-time EtherCAT realization system based on software and hardware cooperative work. Background technique [0002] The length of the information transmitted by each node of the general industrial communication network is not long, and most of them are smaller than the minimum length of the Ethernet frame. And every time each node updates data, it needs to send a frame, resulting in low bandwidth utilization, and the overall performance of the network is also reduced. [0003] EtherCat is Ethernet control automation technology, a field bus system based on Ethernet, and its name CAT is the abbreviation of Control Automation Technology (Control Automation Technology). EtherCAT is a deterministic industrial Ethernet. Researched and developed by Beckhoff, automation g...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L41/12H04L69/22H04L12/40
CPCH04L41/12H04L69/22H04L12/40006H04L2012/40221H04L2012/4026
Inventor 张伟聂新义丁伯楠刘佩郑海燕付仲满段懿玮徐镇
Owner EAST CHINA INST OF COMPUTING TECH