Rapid discriminating multiport control method based on PROFIBUS packet

A control method and multi-port technology, applied in digital transmission systems, electrical components, error prevention, etc., can solve problems such as slow speed, delay in parsing messages, complex hardware design, etc., and achieve fast speed and low hardware overhead Effect

Inactive Publication Date: 2009-02-25
BEIJING D&S FIELDBUS TECH
View PDF0 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this method is: under the condition of high baud rate transmission, it will cause the delay of signal transmission and cause the loss of PROFIBUS waveform
This method has complex hardware desi

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
  • Rapid discriminating multiport control method based on PROFIBUS packet
  • Rapid discriminating multiport control method based on PROFIBUS packet
  • Rapid discriminating multiport control method based on PROFIBUS packet

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] Please refer to Figure 1: The use of PROFIBUS hubs in PROFIBUS networking can facilitate the realization of tree and hybrid structures.

[0026] A PROFIBUS hub can have multiple ports. The following takes six ports as an example to illustrate the hardware composition of a PROFIBUS hub. Please refer to figure 2 , Figure 3, the six-port PROFIBUS hub is composed of six bus channels, reset circuit, and multi-channel receiving / sending control logic circuit. The six channels are No. 1, No. 2, No. 3, No. 4, No. 5 and No. aisle.

[0027] Channel 1 is composed of PROFIBUS port D1, RS-485 drive and isolation circuit U1, detection and isolation circuit N1.

[0028] The second channel is composed of PROFIBUS port D2, RS-485 drive and isolation circuit U2, detection and isolation circuit N2.

[0029] The third channel is composed of PROFIBUS port D3, RS-485 drive and isolation circuit U3, detection and isolation circuit N3.

[0030] The fourth channel is composed of PROFIBUS port...

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 provides a multi-port control method based on the rapid PROFIBUS message identification. The method comprises the following steps: (1) electrification setting; (2) detecting the port signal level by a detecting and isolating circuit detection; (3) detecting the port PROFIBUS signal level by the detecting and isolating circuit, wherein when the signal level is converted from a release state to a transmission state, whether the port receives a message starting signal can be determined; (4) allowing the other ports to be in a transmission state by a multi-path receiving/transmitting control logic circuit, converting the received message into a transmission message signal and outputting the signal to the other ports via a driving and isolating circuit; (5) transmitting a second wave trigger signal when the conversion of the signal level from the transmission state to the release state is detected by the detecting and isolating circuit detection; (6) determining the completion of the message transmission by determining the last time of the second wave trigger signal with the multi-path receiving/transmitting control logic circuit, and closing the other ports; and (7) returning to the step (2). By adopting the method, the message resolution and the baud rate test can be obviated, therefore, the method is a rapid and baud rate-self-adaptive message data flow judgment method.

Description

technical field [0001] The invention relates to a method for quickly identifying PROFIBUS message data flow without parsing PROFIBUS message and self-adaptive baud rate, and a PROFIBUS multi-port data flow control technology based on the method. This method can be applied to the development of multi-port PROFIBUS network equipment, such as PROFIBUS repeater, hub, optical fiber conversion interface and multi-port PROFIBUS gateway, bridge product; it can also be applied to other repeaters and hubs based on RS-485 network Product development of multi-port network equipment. Background technique [0002] In the PROFIBUS network based on RS-485, repeaters are needed to increase network segments to increase PROFIBUS stations and extend PROFIBUS transmission distance. Using PROFIBUS multi-port devices, such as PROFIBUS hubs, can change the PROFIBUS bus-type network topology and realize tree-type or hybrid network structure. Whether it is a repeater, a hub, or other multi-port net...

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
IPC IPC(8): H04L12/56H04L1/00H04L12/26
Inventor 唐济扬
Owner BEIJING D&S FIELDBUS TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap