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A Fiber Optic Communication Method Applicable to Profibus

A fiber optic communication and optical signal technology, applied in the field of communication, can solve problems such as complex wiring, single topology support, poor anti-interference ability, etc., achieve high flexibility and reduce network traffic

Active Publication Date: 2018-04-24
SHENYANG GOLDING NC & INTELLIGENCE TECH CO LTD
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

The wiring of traditional telecommunication media is complex, the anti-interference ability is relatively poor, and the support for topology is relatively simple

Method used

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  • A Fiber Optic Communication Method Applicable to Profibus
  • A Fiber Optic Communication Method Applicable to Profibus
  • A Fiber Optic Communication Method Applicable to Profibus

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Embodiment Construction

[0029] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0030] The invention realizes the operations in the physical layer, the data link layer and the network layer by using the frame forwarding mode. To achieve the above object, the present invention adopts the following technical solutions:

[0031] The basic unit that forms various network topologies is the network node. In this design, the function of each node can be simplified as figure 1 The data transfer triangle shown. LP represents a local communication port, which is an interface provided to other local processing units. OP represents an optical port, each node has two optical ports, data can be sent through the optical port and transmitted on the optical fiber, and sent to the node connected to it. If optical relay is used, data transmission only exists between OP1 and OP2. If it is the sender or receiver in the communication, it n...

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Abstract

The invention relates to the technical field of communication, in particular to an optical fiber communication method suitable for Profibus. In the process of sending the Profibus data frame through the optical path, the present invention includes the following steps: receiving the electrical signal data frame at the LP port of the network node; locally detecting the destination address and the source address of the data frame; updating the LP port address according to the source address Table, select the sending strategy according to the destination address and the address tables of the two optical ports: if the destination address exists in a certain optical port address table, send the data frame from this optical port; if the destination address does not exist in any optical port address table , the data frame is sent from the two optical ports at the same time. The present invention can directly expand the existing Profibus bus using electrical signal communication to optical fiber medium communication.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to an optical fiber communication method suitable for Profibus. Background technique [0002] In the fieldbus communication media, the commonly used transmission media are twisted pair, power system, coaxial cable and so on. The wiring of traditional telecommunication media is complex, the anti-interference ability is relatively poor, and the support for topology is relatively simple. Compared with traditional electrical signal transmission, optical fiber communication has the advantages of high transmission rate, large channel capacity, long transmission distance, low loss, and strong anti-interference ability. In recent years, the application of optical communication technology in the field of high-speed field bus communication has become a research hotspot. And it has been applied in many occasions. With the development trend of fieldbus networking, it is necessary for t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B10/27H04L12/741H04L45/74
Inventor 林浒刘生尹震宇孙树杰韩旭
Owner SHENYANG GOLDING NC & INTELLIGENCE TECH CO LTD
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