Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Self-conversion method based on Modbus-TCP protocol

A conversion method and protocol technology, applied in the direction of electrical components, transmission systems, etc., can solve the problems of heterogeneous system transmission distance, transmission rate, insufficient transmission data volume, etc.

Active Publication Date: 2018-06-15
CHINA NUCLEAR CONTROL SYST ENG
View PDF8 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Therefore, aiming at the deficiencies of the fieldbus protocol in the control system, a mutual conversion based on the Modbus-TCP protocol and the local bus protocol is introduced here to solve the problems of insufficient transmission distance, transmission rate and transmission data volume in the heterogeneous system

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Self-conversion method based on Modbus-TCP protocol

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] A self-converting method based on the Modbus-TCP protocol, which is applied to the nuclear power control system, and the gateway module realizes the connection of the third-party system to the system, and realizes the usability and scalability of the system;

[0040] The concrete steps of this method are as follows:

[0041] Step 1: Protocol Analysis

[0042] After the gateway module receives the Modbus-TCP response message, it analyzes and obtains the data segment DU1 according to the Modbus-TCP protocol;

[0043] Step 2: Protocol conversion

[0044] The gateway module maps the data segment DU1 according to the local protocol to obtain the corresponding data segment DU2;

[0045] The third step: protocol package

[0046] The gateway module packs the data segment DU2 according to the local bus protocol to obtain the corresponding message, and sends it to the local bus network;

[0047] In the same way, the process of sending from the local network to the Modbus-TCP ...

Embodiment 2

[0064]According to the above description, this patented invention is further described through an example. Suppose an analog point POINT1 is transmitted from a third-party system, and the data type is FLOAT. On the Modbus-TCP side, 2 registers are required for transmission, and the register start address is set to 0x0001; on the local protocol side, 4 bytes are required to store the data, and it is set as channel 1, that is, the data type of channel 1 is initialized to FLOAT type .

[0065] Step 1: The gateway module receives the Modbus-TCP message, and after parsing, it gets the data of the data type FLOAT, and the register address of bit[24-31] is 0x0001.

[0066] Step 2: Convert the above data from the DU1 section protocol to DU2, and put the FLOAT data into channel 1 of DU2.

[0067] Step 3: Pack the data of DU2 according to the local bus protocol and send it to the local bus network.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to the field of industrial grade control system data communication, particularly the field of data real-time communication between heterogeneous networks, and specifically relates to a self-conversion method based on a Modbus-TCP protocol. For the problem that protocols do not match, the transmission data quantity is low and the transmission distance is short exists in the data transmission between the heterogeneous systems of the existing nuclear power control system, the invention designs the self-conversion method based on the Modbus-TCP protocol. According to the method, the conversion between the Modbus-TCP protocol and a local bus protocol is realized, so the data transmission between heterogeneous systems is solved; through adoption of a Modbus-TCP network, theproblem of requiring high transmission data quantity, long transmission distance and rapid transmission rate between the two heterogeneous systems is solved; and through adoption of a self-defined RS485 bus protocol, the data interaction between a controller and a gateway module can be realized rapidly, periodically and accurately, a third party device / system accesses the nuclear power control system, and the availability and expansibility of own system are realized.

Description

technical field [0001] The invention relates to the field of data communication of industrial-level control systems, in particular to the field of real-time data communication between heterogeneous networks, and in particular to a self-converting method based on the Modbus-TCP protocol. Background technique [0002] As the DCS control system is more and more widely used in nuclear power control, the development of fieldbus technology has changed the structure of the control system, but with the emergence of more and more fieldbus protocols, data transmission between heterogeneous systems has become It is becoming more and more difficult, resulting in the inability to directly conduct data mutual access and interaction. [0003] At the same time, in order to avoid the RS232 interface used in the system for low-speed, short-distance transmission, the heterogeneous system needs to achieve high-speed, fast transmission of large data volumes. [0004] The Modbus-TCP protocol enc...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/06
CPCH04L69/08
Inventor 胡义武韩冥生冷强王硕詹钟郭震
Owner CHINA NUCLEAR CONTROL SYST ENG
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com