Device expanding system and device expanding method thereof

Abstract

A device expanding system and a device expanding method thereof are disclosed. The device expanding system includes a main control device, a bus and a first expand device. The first expand device is used for electrically connecting to the main control device. The first expand device includes a first processing module and a first counter. When the first expand device is electrically connected to the main control device via the bus, the main control device assigns a first serial number to the first processing module of the first expand device to be a bus address of the first expand device. The first counter is electrically connected to the first processing module; wherein when the first expand device series connects to a second expand device via the bus, the first counter generates a second serial number by calculated the first serial number and transfers to the second expand device.

Description

technical field [0001] The present invention relates to a device expansion system and its device expansion method, and in particular to a device expansion system capable of automatically setting the bus address of the expansion device and its device expansion method. Background technique [0002] With the development of science and technology, various control systems have been widely used in various occasions, such as control systems for monitoring the environment or control systems for storing or reading data. There may be a single control device and many expansion devices inside the control system, and these expansion devices may be the same or different devices to increase the function or application range of the control device. Generally speaking, the control device and the expansion device are connected via a bus. Each expansion device must have its representative address (Address), and different expansion devices on the same bus cannot have the same address, otherwise...

AI Technical Summary

Problems solved by technology

But for the user, it is necessary to adjust the jumper by itself, which will cause inconvenience to the user

At the same time, it may also be set to the same jumper or do not know the current setting status of the expansion device, so that the expansion device cannot work normally.

So the convenience is still not enough

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