A multi-stage serial data communication method, system, terminal and storage medium

Abstract

The present invention relates to a multi-stage series data communication method, and its realization method is as follows: the sending end of the controller sends the module data group to one end of the multi-stage series module group; if the receiving end of the controller receives the verification within the set time If the receiving end of the controller does not receive the verification data within the set time, the original receiving end of the controller will switch to the sending state and send the reversed module data to the other end of the module group The data transmission is completed after both ends of the controller complete the transmission of the verification data; the application of the serial module data communication method of this patent can solve the problem of communication interruption caused by a faulty module in the serial module, and is better than the existing The two-wire scheme that can skip faulty modules and maintain communication reduces data lines, reduces system complexity and wiring costs, and communication data is less likely to be interfered.

Description

technical field [0001] The present invention relates to the technical field of multi-stage serial data communication, and more specifically, relates to a multi-stage serial data communication method, system, terminal and storage medium. Background technique [0002] The data communication application of existing series modules usually includes a controller and multiple series modules. The data output terminal of the controller is connected to the data input terminal of the first series module, and the data output terminal of this module is connected to the input of the next series module. end, in this way multiple modules are connected in series. During communication, the controller continuously sends the communication data of each module successively from the output terminal. After the first serial module receives the signal from the controller, it starts to receive the first set of data. After the receiving is completed, the controller continues to send the subsequent data...

AI Technical Summary

Problems solved by technology

[0004] However, in actual use, because each series module has two input terminals, the number of connections between modules increases, which increases the complexity of the entire system and wiring costs, and too many signal lines are likely to cause mutual interference, resulting in data loss. communication error

In addition, the controller needs to ensure that the main output terminal and the backup output terminal send data at the same time. If there is a deviation in the data phase at both ends, it will also cause communication errors.

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