Automatic industrial cascaded multi-node control system of non-full-code parallel bus

Abstract

The invention discloses an automatic industrial cascaded multi-node control system of a non-full-code parallel bus. The automatic industrial cascaded multi-node control system comprises node circuits which are distributed at various automatic industrial physical locations, the node circuits are successively cascaded by virtue of a parallel bus, addresses of all node circuits are numbered by a principal computer in a drive program by virtue of a non-full-code list, when the corresponding node circuit is required to work, a non-full code is extracted by virtue of a sequence number and outputted to a parallel bus controller by virtue of an output interface of the principal computer, and the control parallel bus drives the corresponding node circuit to work. The automatic industrial cascaded multi-node control system can adopt any parallel bus in any form and performs the transmission by virtue of a parallel bus non-full-code way; each node circuit can be directly simply controlled logically by virtue of the bus, so that no intelligent chip is needed, a peripheral circuit and a node circuit are simple to realize, the price is low, and fewer elements are needed; and a PCB is small in size, thereby well adapting to the installation at physical location and not being limited by the size of the physical location and a distance between the physical locations.

Description

technical field [0001] The invention relates to warehouse intelligent control and logistics management, in particular to a non-full-code parallel bus cascade multi-node industrial automation control system. Background technique [0002] In the industrial automation industry, there are many control nodes, and the distance between nodes is relatively long. Using digital IO to output dozens or hundreds of signals in parallel, and then distribute them to each node, wiring is a big problem. If you rely on CAN and serial bus transmission, the signal level is high, and the receiving end of each node can be controlled separately, but each receiving end (at the node) needs smart chips and peripheral components, which are very expensive, with many components and complicated circuits. Or use one smart chip to control multiple nodes. Since the output level of the smart chip in this way is not industrial-grade (such as TTL), it is parallel output and distributed to each physical node. Al...

AI Technical Summary

Problems solved by technology

If you rely on CAN and serial bus transmission, the signal level is high, and the receiving end of each node can be controlled separately, but each receiving end (at the node) needs smart chips and peripheral components, which are very expensive, with many components and complicated circuits. Or use one smart chip to control multiple nodes. Since the output level of the smart chip in this way is not industrial-grade (such as TTL), it is parallel output and distributed to each physical node. Although the price has dropped, the nodes When the distance between them is long or when there are many nodes controlled by a smart chip, the output level is not an industrial-grade signal, because the long-distance loss is too large

And there are too many output signals, wiring is also a problem, it is not convenient to realize the control of multi-node long-distance and long-distance between nodes

In industrial control, industrial automation and warehousing industries, multi-nodes are long-distance, and the distance between nodes is relatively long, using digital IO, CAN, serial port (CAN, a serial port uses a smart chip for a node is very expensive; a smart chip outputs multiple nodes Control signal, signal transmission attenuation, complex wiring, etc.) high price for transmission, difficult wiring, difficult maintenance, complex circuit, etc.

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