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Method of implementing embedded device address installation by RS 485 bus competition

A technology of embedded devices and device addresses, applied in the bus network, data exchange through path configuration, etc., can solve the problems of high anti-interference, loss of versatility, unsuitable for application, etc., to improve the degree of intelligence and high reliability Effect

Active Publication Date: 2008-04-16
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The method is relatively simple, but the signal line is added, the versatility is lost, and the advantages of RS485 are lost: high anti-interference, long-distance second-line transmission
In many cases it is not suitable for application

Method used

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  • Method of implementing embedded device address installation by RS 485 bus competition
  • Method of implementing embedded device address installation by RS 485 bus competition
  • Method of implementing embedded device address installation by RS 485 bus competition

Examples

Experimental program
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Embodiment 1

[0058] A certain company has produced a certain type of embedded power system, which is widely used in various telecom equipment manufacturers and operators across the country. The power system consists of AC power distribution, DC power distribution, up to 10 rectifiers and a monitoring unit. Due to the requirement of power density and the pressure of cost, the rectifier does not have any human-computer interaction equipment except for an alarm indicator light and RS485 interface. Therefore, the monitoring unit needs to be connected to the 10 rectifiers through the RS485 bus, and the data and alarm information of each rectifier can be obtained by polling through a simple communication protocol, and the operating status of the rectifier can be controlled.

[0059] image 3 It is the hardware schematic diagram of the specific embodiment 1 of the present invention. As shown in the figure, due to the need for bus competition, the RS485 hardware control signal is slightly change...

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Abstract

The invention discloses a method for RS485 bus contention competition realizing an embedded equipment address setting. The object of the invention is to realize that the identifying and resetting of every equipment address can be finished under the premise that no signal transmission line is added. The invention comprises the steps as follows: (1) a monitoring host computer is cooperated with the equipment to identify whether the equipment address is abnormal; if so, the step (2) is switched to; if not, the step is over; (2) every equipment is noticed to enter the state of address reset by the monitoring host computer; (3) the monitoring host computer sends the order of setting equipment address to every equipment, and every equipment answer according current situation and resets address. The invention solves the problem that in the RS485 and other master-slave mode bus monitoring network, equipment causes bus conflict or incapable visit because of address losing. And the identifying and resetting of every equipment address can be finished under the premise that no signal transmission line is added. The advantage of high reliability of the RS485 is ensured.

Description

technical field [0001] The invention relates to a method for realizing address setting of an embedded device through bus competition, in particular to a method for using RS485 bus competition to realize address setting of an embedded device. Background technique [0002] With the development of technology and the improvement of living standards, more and more electronic products such as industrial control, medical treatment, communication, and consumption are increasingly intelligent, and embedded systems with microprocessors as the core are increasingly widely used. Management of intelligent equipment has also become a focus of embedded applications. Users can configure, manage and monitor it through the intelligent interface provided by the device, such as serial port, parallel port, Ethernet port, etc. The high-speed Ethernet interface based on the complex TCP / IP protocol is the future development direction, and realizes rich monitoring and management functions. However...

Claims

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Application Information

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IPC IPC(8): H04L12/40H04L12/28
Inventor 熊勇
Owner ZTE CORP
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