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

Multi-node selection communication method based on equipment types in Modbus RTU network

A device type and communication method technology, applied in the Modbus field, can solve the problems that the address extension technology is not compatible with the serial Modbus standard, the Modbus standard does not support broadcast and multicast, and the screening of target nodes in the group, so as to improve the efficiency of message transmission, The effect of a long history and easy configuration

Active Publication Date: 2020-05-26
DATA TELLIT SUZHOU INC
View PDF7 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] 1. The standard Modbus standard does not support broadcast and multicast functions. If the master node wants to send the same command to multiple slave nodes, it must be sent one by one.
[0006] 2. Although part of the address extension technology can realize the multicast function, it still cannot realize the screening of the target nodes in the group (only all can be selected), and the address extension technology is not compatible with the serial Modbus standard (equivalent to formulating another standard ), not compatible with

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
  • Multi-node selection communication method based on equipment types in Modbus RTU network
  • Multi-node selection communication method based on equipment types in Modbus RTU network
  • Multi-node selection communication method based on equipment types in Modbus RTU network

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0027] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention, but the cited embodiments are not intended to limit the present invention.

[0028] The invention discloses a multi-node selection communication method based on equipment types in a Modbus RTU network, which can select one, part or all of the same type of equipment in a Modbus instruction for operation. For example, 5 rows of lights turn off 1 row, 3 rows, or all of them. This method is different from multicast. The multicast message is effective for all nodes in the group, and some of them cannot be selected. This method has high operating efficiency, high flexibility, high reliability, and is compatible with Modbus RTU specifications.

[0029] The invention discloses a multi-node selection communication method based on equipment types in a Modbus RTU 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 discloses a multi-node selection communication method based on equipment types in a Modbus RTU network. One, part or all of devices of the same type can be selected from one Modbus instruction for operation. For example, one row, three rows or all of the five rows of light are turned off. The method is different from multicast. Multicast messages are effective to all nodes in a group, and part of the nodes cannot be selected. The method is high in operation efficiency, high in flexibility, high in reliability and compatible with Modbus RTU specifications.

Description

Technical field [0001] The present invention relates to the field of Modbus, in particular to a multi-node selection communication method based on device types in a Modbus RTU network. Background technique [0002] The Modbus communication protocol is widely used in the field of automation control. Specifically, it is divided into three communication modes: Modbus ASCII, Modbus RTU and Modbus TCP. Among them, Modbus RTU is the most common in practical applications. The Modbus RTU protocol is a master-slave (master / slave) architecture serial protocol: in a ModBus network, there is a master node (master) with address 0 and multiple slave nodes (slave), and each slave device has There is a unique address, the address value is between 1 and 247. [0003] Traditional technology has the following technical problems: [0004] The Modbus RTU specification does not allow duplicate node addresses, and the standard protocol does not have broadcast and multicast functions (the communication pr...

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): H04L12/40
CPCH04L12/40202H04L2012/40228
Inventor 孙宝石
Owner DATA TELLIT SUZHOU INC
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