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PLC master station, expansion module and PLC system

A technology of expansion modules and master stations, applied in general control systems, control/regulation systems, instruments, etc., can solve problems such as small data transmission, difficult to meet needs, and complex structures

Pending Publication Date: 2020-12-15
SHENZHEN LEAD CNC SYST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The embodiment of the present invention provides a PLC master station, an expansion module, and a PLC system. The main technical problems to be solved are: in the related art, a low-rate method is used to expand the module, which has a low rate, a small amount of data transmission, and a relatively complicated structure. Difficult to meet demand

Method used

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  • PLC master station, expansion module and PLC system
  • PLC master station, expansion module and PLC system
  • PLC master station, expansion module and PLC system

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Experimental program
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Embodiment 1

[0043] The PLC master station in this embodiment implements two EtherCAT bus interfaces, including a first Ethernet interface module and a first EBUS interface module. Among them, the first EBUS interface module is used. Compared with the RS485 bus and SPI bus, the speed is faster and the data transmission volume is larger, which can realize high-speed extended IO refresh and large-capacity data transmission; the first Ethernet interface module can realize remote control. Expand to realize the flexible design of the control scheme, reduce the cost of the control scheme to the greatest extent, and improve the system efficiency.

[0044] For ease of understanding, this embodiment will illustrate the structure of the PLC master station below with reference to the accompanying drawings.

[0045] For the PLC master station provided in this embodiment, see figure 1 As shown, it includes but is not limited to a first controller 1, a data processing module 2, a first EBUS interface m...

Embodiment 2

[0071] As shown in the above embodiments, the structures of the first EBUS interface module, the second EBUS interface module, and the third EBUS interface module in this embodiment can be flexibly set. For ease of understanding, the first EBUS interface module and the second EBUS interface module are implemented as an example through an exemplary signal connector for illustration (wherein the second EBUS interface module and the third EBUS interface module can also be used but not limited to this signal connector).

[0072] The signal connector in this embodiment includes a male head and a female head, wherein the male head can be used as the first EBUS interface module, the female head can be used as the second EBUS interface module, or the male head can be used as the second EBUS interface module, and the female head can be used as the second EBUS interface module. As the first EBUS interface module, it can be flexibly set according to the application scenario, and will not...

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Abstract

The invention provides a PLC master station, an expansion module and a PLC system, the PLC master station realizes two paths of EtherCAT bus interfaces including a first Ethernet interface module anda first EBUS interface, the first EBUS interface is used, compared with an RS485 bus and an SPI bus, the speed is higher, the data transmission quantity is larger, and refreshing of high-speed expansion IO and large-capacity data transmission can be realized. The first Ethernet interface module can realize remote expansion, realizes flexible design of a control scheme, reduces the cost of the control scheme to the greatest extent, and improves the system efficiency.

Description

technical field [0001] The invention relates to the field of bus equipment, in particular to a PLC master station, an expansion module and a PLC system. Background technique [0002] At present, with the rapid development of industrial control technology, it has become the current development trend to integrate Ethernet technology into automation control technology. EtherCAT (Ether Control Automation Technology, Ethernet Control Automation Technology) is a control method that combines real-time Ethernet and field bus, with flexible topology, excellent real-time performance, good stability and short refresh cycle And other advantages, so it is suitable for building a networked automation control system. [0003] With the promotion of the EtherCAT bus, accessories such as servos, steppers, cylinders, and IOs that support the bus have been relatively abundant, so the bus trend of the control system has formed, and many PLC (Programmable Logic Controller, programmable logic con...

Claims

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Application Information

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IPC IPC(8): G05B19/05
CPCG05B19/054G05B2219/1103
Inventor 王立松张建飞
Owner SHENZHEN LEAD CNC SYST