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Communication system

A communication system and communication connection technology, applied in the field of communication systems, can solve the problems of complicated connection methods of expansion modules and expansion modules, and achieve the effect of simplifying connection methods and solving complex connections.

Pending Publication Date: 2022-02-11
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The main purpose of this application is to provide a communication system to solve the problem in the prior art that the expansion module and the connection mode of the expansion module are relatively complicated

Method used

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Embodiment 1

[0058] The communication system in this embodiment, such as figure 1 and figure 2 As shown, it includes a master station 10, a plurality of slave stations 20, a primary bus and a secondary bus, wherein one of the above-mentioned slave stations 20 includes a coupler 21, a plurality of plug-in expansion modules 22 (IO expansion modules) and instructions lamp, the secondary bus is a parallel bus, and the coupler 21 includes an ESC chip 211 and a microprocessor chip 212 (MCU). Wherein, the master station 10 is an EtherCAT master station, the primary bus is EtherCAT, the secondary bus is RS485, the ESC chip 211 is a LAN9252, the microprocessor chip 212 is an arm chip, and the program in the microprocessor chip 212 is used for the extension module The node number of 22 is configured, and the arm chip and LAN9252 are connected through SPI bus communication.

[0059] The node configuration process of the communication system in this embodiment is as follows image 3 and Figure 4...

Embodiment 2

[0071] The communication system in this embodiment is consistent with the overall structure of the communication system in Embodiment 1, however, a mode switching component is added to the coupler in this embodiment, specifically a button in this embodiment. When the button is pressed for a long time, the indicator light in the coupler will indicate that the mode switching is in progress. At this time, after the coupler and its subsequent expansion modules are powered off and restarted, the coupler will enter the node configuration mode. The specific process and examples The steps in 1 are the same and will not be repeated here.

[0072] From the above description, it can be seen that the above-mentioned embodiments of the present application have achieved the following technical effects:

[0073] In the communication system of the present application, it includes a master station, a slave station, a primary bus and a secondary bus, wherein the above-mentioned primary bus is u...

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Abstract

The invention provides a communication system, and the communication system comprises a master station, slave stations, a primary bus and a secondary bus; the primary bus is used for communication connection of the master station and the slave stations, at least one slave station comprises a coupler and a plurality of insert type expansion modules, the secondary bus is used for communication connection of the coupler and the expansion modules, and the secondary bus is a parallel bus. In the communication system, the secondary bus is the parallel bus and can be in communication connection with a plurality of plug-in type extension modules through the parallel bus without additional connecting pieces, so that the plug-in type extension modules and the connection mode of the plug-in type extension modules are greatly simplified, and the problem of complex connection of expansion modules in the prior art is solved.

Description

technical field [0001] The present application relates to the communication field, and in particular to a communication system. Background technique [0002] Due to its strong real-time performance, EtherCAT is getting more and more attention in industrial interconnection. In industrial sites, control equipment needs to interact with various industrial equipment and sensors. The IO expansion module using the powerful real-time performance of the EtherCAT protocol has become an increasingly popular choice. [0003] At present, a communication system including expansion modules is a communication system combining two-level buses. Generally, EtherCAT is used as the first-level bus, and the SPI bus is used as the second-level bus. Arm and CPLD are used as the protocol between the first-level bus and the second-level bus. Convert the solution of the middle layer to reduce the cost of the whole system, and at the same time ensure a certain real-time performance. [0004] In the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L43/10H04L12/40G06F13/42
CPCH04L12/40006G06F13/4247G06F13/4282H04L43/10
Inventor 胡飞鹏赵浩良曲菲李婕
Owner GREE ELECTRIC APPLIANCES INC
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