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

Abstract

The invention relates to a multi-stage serial data communication method. The implementation method comprises the following steps: a sending end of a controller sends a module data group to one end of a multi-stage serial module group; if the receiving end of the controller receives the verification data within the set time, data transmission is ended; and if the receiving end of the controller does not receive the verification data within the set time, the original receiving end of the controller is switched into a sending state, the inverted module data set is sent to the other end of the module set, and data transmission is ended after the verification data are sent at the two ends of the controller. By applying the series module data communication method, the problem of communication interruption caused by one fault module in the series modules can be solved, and compared with an existing double-line scheme capable of skipping the fault module to keep communication, the number of data lines is reduced, the system complexity and wiring cost are reduced, and communication data are not prone to being 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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