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Automatic device communication address allocation system based on serial interface and working method

A technology of equipment communication and serial interface, which is applied in the direction of transmission system, electrical digital data processing, electrical components, etc., can solve the problems of production, installation and post-maintenance product reliability, and achieve loss reduction, circuit simplification, production and Easy installation effect

Active Publication Date: 2014-05-21
JIANGSU ODIN ELECTRONICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

No matter which method is used, it will have a certain impact on the production, installation and post-maintenance of the equipment, and even the reliability of the product.

Method used

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  • Automatic device communication address allocation system based on serial interface and working method

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Embodiment Construction

[0025] The present invention will be further explained below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention.

[0026] Such as figure 1 A serial interface master-slave device communication address automatic allocation system is shown, which consists of the following parts:

[0027] A master device 1 arranged at one end of the communication system, three slave devices sequentially connected to each other through connection lines, which are respectively a first slave device 2, a second slave device 3, and a third slave device 4; One-to-one correspondence, a switch device with unidirectional turn-off performance is arranged between adjacent slave devices; the switch device is selected to have a switch diode 5 with a PN junction.

[0028] The above multiple slave devices are conne...

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Abstract

The invention discloses an automatic device communication address allocation system based on a serial interface. The system comprises a master device, a plurality of slave devices and switching elements, wherein the master device is arranged at one end of a communication system, the slave devices are sequentially connected through connecting lines, and the switching elements in one-to-one correspondence to the slave devices have unidirectional shutoff performances. In the communication system, at least one connecting line is arranged among the master device and the slave devices. Compared with the prior art, the system has the advantages that addresses can be automatically set through the slave devices, the lines of the communication system can be simplified, production, installation and debugging of the communication system are simpler, faults can be handled according to signal interrupting positions when the system is faulted, besides, the master device directly exchanges information with the slave devices through signal transmission lines, loss in fault time and after fault is decreased, and reliability of the communication system can be improved.

Description

technical field [0001] The invention relates to a communication structure, in particular to a device communication address automatic allocation system based on a serial interface and a working method thereof. Background technique [0002] The serial interface is widely used in security, communication, industrial control and other fields because of its simple circuit and high reliability. Since the serial interface usually only supports point-to-point communication, if one-to-many master-slave communication is to be realized, the serial interface of each slave device needs to be input and then output. In addition, each slave device node needs to be allocated separately A unique device logical address. The usual way to set the address of the device node is to place a dial switch or a jumper resistor on the device node, or to set the address one by one for each slave device connected individually through the host. No matter which method is used, it will have a certain impact ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/12G06F13/38H04L29/08
Inventor 刘合汉
Owner JIANGSU ODIN ELECTRONICS TECH
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