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Slave station system and control method based on EtherCAT

A technology of controller and master station, applied in the direction of transmission system, program control, computer control, etc., can solve the problems of increasing the complexity of the control system, large space, occupation, etc.

Active Publication Date: 2018-02-16
SIASUN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this scheme of one master and multiple slaves greatly increases the complexity of the control system and takes up a large space, which is not suitable for the situation where the installation space is limited

Method used

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  • Slave station system and control method based on EtherCAT
  • Slave station system and control method based on EtherCAT
  • Slave station system and control method based on EtherCAT

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] figure 1 The schematic structural diagram of the EtherCAT-based slave station system provided by Embodiment 1 of the present invention, this embodiment can be applied to the situation of a small-scale proprietary high-speed data acquisition control system, and the system specifically includes: a slave station data exchange module 110, a slave station A controller 120 , an encoder data acquisition module 130 , a switch input and output module 140 , an analog data input and output module 150 , and a bus protocol conversion module 160 .

[0026] Wherein, the slave station data exchange module 110 is connected to the master station controller for exchanging data with the slave station controller 120 through a high-speed SPI (SerialPeripheral Interface, Serial Peripheral Interface) bus;

[0027] The slave station controller 120 is connected with the slave station data exchange module 110, and is used for analyzing and communicating the data in the master station controller, ...

Embodiment 2

[0041] figure 2 The schematic structural diagram of the EtherCAT-based slave station system provided by Embodiment 2 of the present invention, this embodiment is applicable to the situation of small-scale proprietary high-speed data acquisition control, the system also includes: power management module 170 and peripheral circuit module 180 .

[0042] Wherein, the power management module 170 is configured to provide power management for the slave station controller;

[0043] The peripheral circuit module 180 includes a buzzer and LED lights; wherein the LED lights are used to display the operating status of each module in the system, and the buzzer is used to give an alarm prompt when the operating system kernel fails.

[0044] It should be noted that the power management module has a voltage input with a wide voltage range, wherein the wide voltage range is preferably 24-60V, and the power management module can output voltages of 3.3V, 5V, 12V and 24V, and can output voltage...

Embodiment 3

[0052] image 3 The flow chart of the EtherCAT-based control method provided by Embodiment 3 of the present invention, this embodiment is applicable to the situation of high-speed data acquisition and control, and the method can be executed by the slave station system, specifically including the following steps:

[0053] S210. The slave station controller acquires link layer data packets of different preset protocols according to the preset data structure.

[0054] It should be noted that the number of interfaces and data structures of the hardware in the slave station system in the embodiment of the present invention are predetermined. For different protocols, there are different protocol data structures. The slave station controller obtains the link layer data corresponding to the protocol from the preset protocol, and obtains the link layer data corresponding to the preset protocol according to the preset data structure. For example, when the slave station controller rece...

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PUM

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Abstract

The invention discloses a slave station system and a control method based on EtherCAT. The system comprises a slave station data exchange module used for exchanging data with a slave station controller; the slave station controller used for analyzing and communicating data in a master station controller; an encoder data collection module used for converting multichannel encoder protocols; a switching value input and output module used for collecting a digital input signal and outputting a switching value level control signal; an analog quantity data input and output module used for performinglevel conversion and isolation on the input analog voltage signal, reading analog quantity data and outputting an analog quantity data control signal; and a bus protocol conversion module used for coupling different industrial bus protocols into the EtherCAT protocol. The slave station system solves the problem of the complexity of the control system and the large occupancy of the installation space, and improves the compatibility and universality of different communication protocols.

Description

technical field [0001] The embodiment of the present invention relates to industrial control technology, in particular to an EtherCAT-based slave station system and control method. Background technique [0002] In the field of industrial control, for complex control scenarios, it is necessary to face the problem of multi-signal processing. For the master-slave bus structure of the distributed control system, it is necessary to combine some physical layer signals such as analog quantities, switch quantities and standard communication protocols, such as SSI (Synchronous Serial Interface, synchronous serial interface) protocol encoder signals, BISS ( (Bi-directional Synchronous Serial Interface, two-way synchronous serial interface) protocol encoder signal, RS232 communication protocol data, RS485 communication protocol data and CAN (Controller Area Network, controller local area network) bus communication protocol data are converted by the slave station controller It is a sta...

Claims

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Application Information

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IPC IPC(8): H04L12/40H04L29/06G05B19/042
CPCG05B19/0428H04L12/40006H04L69/08H04L2012/4026
Inventor 杨跞陈熙李庚益刘亮史璟云
Owner SIASUN CO LTD
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