Distributed control system cross-wide area network communication method and gateway

Abstract

The invention relates to a distributed control system cross-wide area network communication method and gateways, and the method comprises the steps: firstly, deploying a main gateway and a standby gateway in pairs in a distributed control system of each region; secondly, for each distributed control system, a virtual two-layer network is constructed through the Ethernet over mGRE; thirdly, according to the working state of the main gateway, the main gateway and / or the standby gateways in the same pair are / is controlled to complete communication with other distributed control systems in the same virtual two-layer network; wherein the main gateway and the standby gateway in the same region are respectively accessed to different wide area networks. According to the invention, by arranging the redundant device and the redundant interface on the device, the problem that the network is interrupted when a single device fails is solved, and the reliability of the network is improved. And only one external network works at the same time, so that the generation of a loop can be avoided, and the cost can be saved for the standby external network which is a 4G / 5G network charged according to the flow.

Description

technical field [0001] The invention relates to the communication field of industrial control systems, in particular to a communication method and a gateway for a distributed control system across a wide area network. Background technique [0002] Traditional distributed control systems are usually deployed in one factory area, one area at most in one park, and solve the problem of communication distance by deploying optical fiber, industrial wireless and other solutions. [0003] In recent years, the country has vigorously promoted the construction of the industrial Internet, and promoted the transformation and upgrading of traditional industries to industrial Internet applications. It is difficult for traditional communication solutions to meet the ever-growing demand for cross-regional remote control, and access to the WAN has become the only way. [0004] The industrial industry refers to the construction of a cross-regional distributed control system layer 2 and layer ...

AI Technical Summary

Problems solved by technology

[0006] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a distributed control system cross-wide area network communication method and gateway, which solves the technical problems of existing industrial control communication schemes that do not consider equipment redundancy and poor operational reliability

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