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A dsp-based ethercat slave to canopen master communication unit

A communication unit, master station technology, applied in electrical components, transmission systems, etc., can solve the problem of not having an EtherCAT communication interface

Active Publication Date: 2019-01-25
天津瑞源电气有限公司
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

However, due to the new technology, many old power electronic equipment departments do not have the EtherCAT communication interface, but only the Canopen communication interface widely used in the industry, which makes the EtherCAT protocol encounter bottlenecks in the application of these power electronic equipment.

Method used

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  • A dsp-based ethercat slave to canopen master communication unit
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  • A dsp-based ethercat slave to canopen master communication unit

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Embodiment Construction

[0027] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0028] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0029] A DSP-based EtherCAT slave to Canopen master communication unit, such as figure 1 shown, including:

[0030] FPGA chip, with dual network ports, embedded with EtherCAT protocol stack, completes the capture and splitting of EtherCAT data frames, and the state monitoring of related state machines, and performs related data transmission with the DSP unit through the serial data bus; this embodiment Choose EtherCAT industrial Ethernet chip ET1200.

[0031] The DSP unit includes the EtherCAT slave station data parsing algorithm unit, the process protocol conversion module and the CANopen master station protocol stack unit. In this embodiment, a TMS320C28X series floating-point DSP co...

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Abstract

The invention provides a communication unit for converting an EtherCAT slave station into a Canopen master station on the basis of a DSP (Digital Signal Processor). The communication unit comprises an FPGA (Field Programmable Gate Array) chip, a DSP unit, and a CAN (Controller Area Network) module, wherein an EtherCAT protocol stack is embedded into the FPGA chip; the FPGA chip is used for completing capturing and splitting of an EtherCAT data frame and state monitoring of related state machines, and carries out data transmission with the DSP unit by a serial data bus; the DSP unit comprises an EtherCAT slave station data analysis algorithm unit, a process protocol conversion module and a CANopen master station protocol stack unit; and the CAN module is used for completing supporting and communication on the CANopen master station protocol stack unit of the DSP unit. The communication unit provided by the invention has the characteristics of high-speed calculation, high-speed conversion and the like, and efficiently completes addition of power electronic equipment only with a Canopen communication interface into an EtherCAT control looped network.

Description

technical field [0001] The invention belongs to the technical field of industrial control communication, in particular to a communication unit from a DSP-based EtherCAT slave station to a Canopen master station. Background technique [0002] With the development of society, the new energy industry has gradually gained attention. Due to the instability and uncertainty of new energy, as well as the impact of weather, the power generation fluctuates significantly, which affects the balance of the entire power grid. Therefore, large-scale The construction of new energy power plants is limited. In this case, distributed power generation and smart microgrid make up for the above shortcomings. The so-called smart microgrid is a small grid and microgrid composed of power generation system, energy storage system, and load. It has the characteristics of high-speed adjustment of supply and demand balance, grid-connected and off-grid fast switching. Among them, the power generation sys...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/06
CPCH04L69/08
Inventor 房凯龙周玲玲魏涛
Owner 天津瑞源电气有限公司
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