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Method and system for identifying slave address sequence in master-slave fieldbus

A field bus and address sequence technology, applied in the field of communication, can solve the problems of low reliability, high cost, and inability to learn about vacant slots, so as to ensure normal communication and improve the degree of intelligence.

Active Publication Date: 2018-03-13
ZTE CORP
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Problems solved by technology

However, the cost of this method is relatively high, and for devices such as DSDT (double-pole double-throw) switches or relays connected to the control signal, the reliability is not high. If a fault occurs, the entire serial loop is disconnected, and the addresses can only be identified sequentially. It is impossible to know the situation of vacant slots (the slave is not in place)

Method used

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  • Method and system for identifying slave address sequence in master-slave fieldbus
  • Method and system for identifying slave address sequence in master-slave fieldbus
  • Method and system for identifying slave address sequence in master-slave fieldbus

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Embodiment Construction

[0052] It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0053] refer to figure 1 , propose an embodiment of the method for identifying slave addresses in the master-slave fieldbus of the present invention, including:

[0054]Step S10, setting an SVB bus for connecting the master and the slaves in series, and at least one diode is connected in series between the slaves through the SVB bus;

[0055] Step S11, when the address of the slave machine conflicts or a new slave machine joins, the master controls the slave machine to output a preset voltage to the SVB bus, and resets the address of each slave machine by detecting the voltage value of each slave machine.

[0056] refer to figure 2 , step S11 further includes:

[0057] Step S111, the master obtains the IDs of all slaves;

[0058] Step S112, specifying any ID slave to output the preset voltage to the SVB bus;

[...

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Abstract

The invention discloses a method for sequentially identifying slave addresses in a master-slave field bus. When the addresses of the slaves conflict or a new slave joins, the master controls the slaves to output a preset voltage to the SVB bus, and resets the addresses of the slaves by detecting the voltage values ​​of the slaves. The present invention also proposes a corresponding system. The invention provides a method and a system for identifying the slave address sequence in a master-slave field bus, which realizes the automatic sequence identification of the slave addresses in the master-slave field bus.

Description

technical field [0001] The invention relates to the field of communication, in particular to a method and a system for identifying the sequence of addresses of slave machines in a master-slave field bus. 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. On-site networking and management of intelligent equipment has also become a focus of embedded applications. Users can configure, manage and monitor it through the intelligent interfaces provided by the device, such as serial ports, parallel ports, and Ethernet ports. 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, most embed...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/40H04L29/12
CPCH04L2012/40215H04L61/5038H04L61/5046
Inventor 熊勇
Owner ZTE CORP
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