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Pbus transformerless ethercat communication circuit and application method

A technology of communication circuits and transformers, applied in data exchange through path configuration, electrical components, bus network, etc., can solve problems such as excessive connector size, reduce proprietary, simple structure principle, and reduce board area Effect

Active Publication Date: 2021-12-17
SHANGHAI EMPOWER AUTOMATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the back-to-back communication method between PHY and PHY has also been proposed, it requires as many as 10 signal lines
The size of the connector is too large

Method used

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  • Pbus transformerless ethercat communication circuit and application method

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Experimental program
Comparison scheme
Effect test

Embodiment

[0018] Application method of the present invention mainly is:

[0019] A. Connect the PBUS special connector to the PBUS communication between the two boards, and the distance between the modules is 20mm, and the length of the PBUS wiring is less than 80mm. The test result is: the EtherCAT slave station can communicate with the master station normally; It can communicate normally; through the EtherCAT diagnostic software, no communication abnormalities were found. After 48 hours of continuous testing, no abnormalities were found.

[0020]B. Connect the cat5e network cable to the PBUS communication between the two boards, and the distance between the modules is 1500mm. The test result is: the EtherCAT slaves can communicate normally; through the EtherCAT diagnostic software, no communication abnormalities are found. After 48 hours of continuous testing, No abnormalities were found.

[0021] The structure principle of the invention is simple, can avoid the waste of redundant ne...

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PUM

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Abstract

The invention discloses a PBUS transformerless EtherCAT communication circuit and an application method, including a first Ethernet PHY driver chip, a second Ethernet PHY driver chip, a first impedance matching network, a second impedance matching network, a third impedance matching network, a Four impedance matching networks, the first impedance matching network and the second impedance matching network connected in parallel and the third impedance matching network and the fourth impedance connected in parallel are connected between the first Ethernet PHY driver chip and the second Ethernet PHY driver chip The matching network has a simple structure and principle, can avoid the waste of redundant network transformers, network connectors and Ethernet cables, and can further reduce the board area required for the implementation of the EtherCAT technology.

Description

technical field [0001] The invention relates to the technical field of industrial real-time Ethernet automation control, in particular to a PBUS transformerless EtherCAT communication circuit and an application method. Background technique [0002] The Ethernet interface transformer in a typical EtherCAT is an important device, which helps to improve the protection performance and EMI performance of the system and makes a great contribution to the signal quality and transmission distance. However, the large size of the network transformer will increase the PCB area of ​​each EtherCAT slave module, and also increase the cost of the single board. [0003] EtherCAT Industrial Ethernet technology is particularly suitable for modular, distributed designs. The functions required by the system are divided into independent modules to facilitate system integration and flexible configuration. Each module communicates through the EtherCAT bus. This also means that a large number of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/40
CPCH04L12/40013
Inventor 赵雍胤李思佳李思泉
Owner SHANGHAI EMPOWER AUTOMATION TECH CO LTD