Multi-stage cascade system control method and multi-stage cascade system

Abstract

The invention provides a multi-stage cascade system control method and a multi-stage cascade system. The host sends a configuration instruction to the connected slave; each slave sequentially receivesthe configuration instruction transmitted by the upper-level equipment, performs identity information setting according to the target ID in the configuration instruction, modifies the target ID in the configuration instruction when the lower-level equipment exists, and transmits the modified configuration instruction to the lower-level equipment; each slave feeds back corresponding identity information to the host after setting the identity information; the host updates the waiting time according to the first time; and when the host does not receive the new identity information beyond the waiting time, the host counts the identity information of all slaves in the cascade system according to the received identity information. By setting the waiting time, it is guaranteed that the host canaccurately obtain the identity information of all the slaves in the cascade system, the host is prevented from waiting for feedback of the slaves for a long time, and the time is saved.

Description

technical field [0001] The present application relates to the communication field, and in particular, relates to a multi-stage cascade system control method and a multi-stage cascade system. Background technique [0002] With the development of society and the progress of science, Internet devices are widely used. What is particularly important in the Internet is the way of communication and connection between devices. For example, the communication and connection mode between the master and the slave. There are two ways of existing master-slave communication: point-to-point mode bus connection or 1-link multi-mode bus connection. [0003] The point-to-point mode bus connection is mainly used for data command transmission between the master and the slave. When the number of slaves increases, the number of buses will also increase exponentially, and the number of control ports required by the master will also increase accordingly. The routing of the bus is very complicated...

AI Technical Summary

Problems solved by technology

When the number of slaves increases, the number of buses will also increase exponentially, and the number of control ports required by the master will also increase accordingly. The routing of the bus is very complicated

1. Although the multi-mode bus connection can solve the problem of complex wiring, when the number of slaves increases, the length of the control bus increases, the signal quality decreases, and the anti-interference ability decreases.

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