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Communication connection device, programmable logic controller, communication method and product

A technology of communication connection and programming logic, applied in the direction of program control, program control, electrical program control, etc. in sequence/logic controllers, which can solve the problem of high price of programmable logic controllers

Active Publication Date: 2021-05-11
SHENZHEN HPMONT TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, Siemens' Profibus is produced by a special-purpose chip ASIC, which is too expensive compared to a small programmable logic controller.

Method used

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  • Communication connection device, programmable logic controller, communication method and product
  • Communication connection device, programmable logic controller, communication method and product
  • Communication connection device, programmable logic controller, communication method and product

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Please refer to figure 1 , the embodiment of the present invention provides a communication connection device 01 for connecting the main module 03 of the programmable logic controller 02 and at least one expansion module 04, the main module 03 and the expansion module 04 have inherent standards Interface, the inherent standard interface includes a chip selection interface 041, a communication interface 042 and a control interface 043, and the communication connection device 01 includes: a chip selection connection module 011, a communication connection module 012 and a control connection module 013, which will be described in detail below.

[0048] The chip select connection module 011 is used to connect the main module 03 with the chip select interface 041 of the expansion module 04, so as to realize the communication handshake between the main module 03 and the expansion module 04.

[0049] In the embodiment of the present invention, the signal transmitted by the chip...

Embodiment 2

[0064] see Figure 4 , the embodiment of the present invention provides a programmable logic controller 02, including: a communication connection device 01, a main module 03 and at least one expansion module 04;

[0065] The communication connection device 01 includes: a chip selection connection module 011 connected to the inherent standard interface of the main module 03 and at least one of the expansion modules 04, a communication connection module 012 and a control connection module 013, wherein the inherent standard The interface includes chip selection interface 041, communication interface 042 and control interface 043;

[0066] The chip select connection module 011 is used to connect the chip select interface 041 of the main module 03 and the expansion module 04, so as to realize the communication handshake between the main module 03 and the expansion module 04;

[0067] The communication connection module 012 is used to connect the communication interface 042 of the ...

Embodiment 3

[0075] see Figure 5 , the embodiment of the present invention provides the above-mentioned communication method for the programmable logic controller 02, including step S10 to step S60, which will be described in detail below.

[0076] Step S10: The chip selection connection module 011 transmits the detected quantity and type of the expansion modules 04 to the main module 03.

[0077] In the embodiment of the present invention, after the programmable logic controller 02 is powered on, the chip selection connection module 011 of the communication connection device 01 will detect each expansion module 04, and the main module 03 sends a chip selection signal, which is transmitted through the chip selection connection module 011 To each expansion module 04 , each expansion module 04 feeds back the quantity and type of the corresponding expansion module 04 and transmits it to the main module 03 through the chip selection connection module 011 .

[0078]Step S20: The main module 0...

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PUM

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Abstract

A communication connection device, programmable logic controller, communication method and product, the main module and the expansion module both have inherent standard interfaces, and the inherent standard interfaces include a chip selection interface, a communication interface and a control interface; the chip selection connection module of the communication connection device Connect the chip selection interface of the main module and the expansion module to realize the communication handshake between the main module and the expansion module. The communication connection between the expansion modules, the control connection module of the communication connection device connects the control interface of the main module and the expansion module, and realizes the control output of the main module to the expansion module or realizes the state feedback of the expansion module. The inherent interface of the main module is connected with the inherent interface of the expansion module through the communication connection device, so as to realize the connection between the main module of the programmable logic controller and at least one expansion module.

Description

technical field [0001] The invention relates to the field of programmable logic controllers, in particular to a communication connection device, a programmable logic controller, a communication method and products. Background technique [0002] Programmable logic controllers (PLCs) are widely used in various industries today, such as production equipment and process control in automobiles, chemicals, and textiles. It consists of an input port, a processor and an output port. It uses a type of programmable memory for its internal storage program, and executes user-oriented instructions such as logical operations, sequence control, timing, counting, and arithmetic operations. Through the input port Read the digital or analog input electrical signal, then process the electrical signal and send it to the processor for processing according to the logic set by the user, and then convert the processing result into a corresponding electrical signal and send it to its output port , ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B19/05
CPCG05B19/054
Inventor 刘云熊志伟
Owner SHENZHEN HPMONT TECH