Protocol conversion gateway

A protocol conversion and protocol technology, applied in network connection, electrical components, transmission system, etc., can solve the problems of long development cycle and high cost

Inactive Publication Date: 2010-06-16
SHANGHAI DIANJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this connection method is co

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Embodiment 1

[0027] The present invention utilizes the protocol conversion principle, and the protocol conversion is a process in which one protocol A is mapped to another protocol B. In the process of protocol conversion, the protocol conversion gateway analyzes the content of the protocol data packet according to the definition of network protocol A, including the transmission control part and data part in the data packet, and then analyzes the information contained in the data according to the information of the data part. Specific meaning, through the data mapping definition table, the data in the protocol A data packet is converted into the data content supported by the protocol B network, and then the data is encapsulated into the data packet supporting the network protocol B, and transmitted to the designated network through the protocol B network equipment. During the process of protocol conversion, protocol conversion is mainly carried out at the network layer and application laye...

Embodiment 2

[0037] In the basic automation system of a certain factory, the network form of the L1 level network controlled by the field is PE-Link, which is a special control network, and the network communication protocol is a PE-Link special protocol. The connection between each PLC and DCS control station Realized through PE-Link, the network belongs to the fieldbus level device control network. The L2 network of the management layer, that is, the network form of the process machine network adopts Ethernet 10Base-5 / T, and the network communication protocol is TCP / IP. Due to the different network forms and protocols, the communication between L2 and L1 must be realized through the protocol conversion gateway between PE-Link and TCP / IP. Figure 4 It is a flowchart of protocol conversion.

[0038] On the aforementioned industrial control network protocol and IPv6 protocol conversion gateway, according to the analysis of practical applications, the main functions of this protocol convers...

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Abstract

The invention provides a protocol conversion gateway which analyzes the problems existing in the development of an industrial control network protocol and a TCP/IP protocol by analyzing an industrial control network and Ethernet, researches the problems involved in the protocol conversion, provides an industrial control network protocol-IPv6 conversion mechanism and successfully realizes data exchange between the industrial control network and the Ethernet.

Description

technical field [0001] The invention relates to the field of industrial control, in particular to a gateway for converting an industrial control network protocol and an IPv6 network protocol. Background technique [0002] In the current large-scale enterprise automation system, the upper enterprise management and production monitoring layer generally use Ethernet and PC, while the lower workshop site uses field bus and single-chip monitoring equipment. The upper and lower layers use different network architectures and protocols. In order to achieve communication, the usual method is to use an industrial control computer plus an Ethernet card, plus an interface card on the PC slot and a parallel printer EPP interface card to achieve. However, this connection method is costly and the development cycle is long. [0003] All kinds of industrial control protocols are based on the ISO / OSI open system interconnection model. The OSI reference model is divided into seven layers. The...

Claims

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Application Information

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IPC IPC(8): H04L29/06H04L12/66
Inventor 吉顺如
Owner SHANGHAI DIANJI UNIV
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