Multipoint automatic identification and master-slave synchronization serial communication mode

Abstract

The invention relates to a multipoint automatic identification and master-slave synchronization serial communication mode, in particular to a multipoint automatic identification and master-slave synchronization capable of simultaneously realizing slave automatic identification and master-slave synchronization problems, belonging to the technical field of data communication. A master adopts an ordered data format order string and sends the ordered data format order string; the slave reads orders in a progressively decreasing way, that is to say, the slave sequentially and progressively decreases the received data orders, then sequentially sends the data orders to the master in an inverted order data order format and adds data in a progressively increasing way to finally complete the transmission of the orders; and the master can adjust time at any time in the process. The invention replaces the traditional parallel-connected wiring communication mode with full and more powerful functions, simplifies the complexity degree of wiring and lengthens the communication distance.

Description

technical field [0001] The invention belongs to the technical field of data communication, and in particular relates to a serial communication mode of multi-point automatic identification and master-slave synchronization. Background technique [0002] In automatic control and measurement systems, in order to ensure reliability, wired master-slave multi-point communication is generally used, and serial communication is generally used to simplify wiring and extend communication distance. The traditional system connection method is mostly parallel connection, also known as star connection, such as figure 1 shown. In an occasion where master-slave synchronization is required, it is very natural and simple to implement parallel communication wiring: the master sends a synchronization signal, and each slave will receive the signal at the same time, thereby realizing the synchronous work of the master and slave. However, when using this parallel connection communication mode, it ...

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Problems solved by technology

This approach will bring some additional inconveniences in practical applications: firstly, the logo itself is a relatively professional thing, and generally people without professional training will be confused when they first contact it; secondly, the setting of the logo generally requires manual work. Participation, which will inevitably increase the difficulty of use; the corresponding relationship between the identification of the slave and its actual location is fixed, maintenance and replacement will be very troublesome, and errors are prone to occur

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