Communication device for converting industry Ethernet slave station into Modbus master station

A communication device, Ethernet technology, applied in transmission systems, electrical components, etc., can solve the problems of EtherCAT protocol bottleneck, too new technology, no EtherCAT communication interface, etc., to achieve the effect of easy implementation and reasonable circuit design

Pending Publication Date: 2016-09-28
RENERGY ELECTRIC TIANJIN
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Problems solved by technology

[0003] However, due to the new technology, many old power electronic equipment departments do not have the EtherCAT communication interface, but only the Modbus communication interface widely used in the industry, which makes the EtherCAT protocol encounter bottlenecks in the application of these power electronic equipment.

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  • Communication device for converting industry Ethernet slave station into Modbus master station
  • Communication device for converting industry Ethernet slave station into Modbus master station
  • Communication device for converting industry Ethernet slave station into Modbus master station

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Embodiment Construction

[0028] 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.

[0029] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0030] A communication device for converting an industrial Ethernet slave station to a Modbus master station, such as figure 1 As shown, including DSP unit, slave station protocol controller, Ethernet module, EPROM memory and power supply module,

[0031] The slave station protocol controller is embedded with the EtherCAT protocol stack, communicates with the EtherCAT master station through the PHY network card, obtains the EtherCAT data frame and performs split processing, and monitors the state of the relevant state machine, and performs the state monitoring through the serial data bus and the DSP unit data transmission;

[0032] The DSP unit includes an EtherCAT protocol stack modul...

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Abstract

The invention provides a communication device for converting an industry Ethernet slave station into a Modbus master station. The device comprises a DSP unit, a slave station protocol controller, an Ethernet module, an EPROM memory and a power source module, wherein the DSP unit is connected with the slave station protocol controller through a serial port, the DSP unit is connected with the Ethernet module through the serial port, the slave station protocol controller is connected with the EPROM memory, the power source module is used for supplying power for the slave station protocol controller, the DSP unit and the Ethernet module; the slave station protocol controller is connected with a PHY network card through a PHY interface thereon, the PHY network card is connected with the RJ45 interface through a network transformer. The communication unit provided by the invention has the features of high-speed computing and high-speed conversion, and is capable of efficiently the operation of adding power electronic equipment only with the Modbus communication interface into an EtherCAT control looped network.

Description

technical field [0001] The invention belongs to the technical field of industrial control communication, and in particular relates to a communication device for converting an industrial Ethernet slave station to a Modbus master station. Background technique [0002] Since the microgrid often switches between grid-connected and island operation modes, the control strategy and response speed of the entire microgrid are particularly important. Especially in the process of grid-connected to isolated island, the immediate intervention of energy storage equipment is related to the success or failure of the entire micro-grid. The EtherCAT communication protocol has been gradually applied in related fields such as smart microgrid and smart distribution network. Its high-speed, high real-time, high synchronization performance has been widely recognized by the industry. [0003] However, due to the new technology, many old power electronic equipment departments do not have the Ether...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/06
CPCH04L69/08
Inventor 房凯龙张新强周玲玲侯立军
Owner RENERGY ELECTRIC TIANJIN
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