Interconnection method for PROFIBUS DP and PROFINET communication networks through sharing storage unit

A shared memory, DP communication technology, applied in the field of network communication, can solve the problem of less gateway products and so on

Active Publication Date: 2016-01-13
BEIJING D&S FIELDBUS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, there are many mature PROFINET equipment development schemes and PROFIBUS master development schemes, but there are few gateway products connecting the two bus networks.

Method used

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  • Interconnection method for PROFIBUS DP and PROFINET communication networks through sharing storage unit
  • Interconnection method for PROFIBUS DP and PROFINET communication networks through sharing storage unit
  • Interconnection method for PROFIBUS DP and PROFINET communication networks through sharing storage unit

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Embodiment Construction

[0064] refer to figure 1 , in the present invention, the gateway hardware mainly includes two parts: the Ethernet communication protocol micro-control unit and the DP communication protocol micro-control unit, wherein the shared memory is built in the DP communication protocol micro-control unit.

[0065] The shared memory is divided into a register area, an IO data area, a pipeline area and a mailbox area, and its main function is to be responsible for event communication and data sharing between two MCUs.

[0066] The main functions of the Ethernet communication protocol microcontroller unit are:

[0067] Maintain PROFINET communication between gateway and PROFINET controller;

[0068] Check the DP configuration downloaded by Ethernet and send it to the DP communication protocol MCU.

[0069] The main functions of the DP communication protocol microcontroller unit are:

[0070] Maintain the PROFIBUSDP bus communication between the gateway and the PROFIBUSDP slave station;...

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Abstract

The invention discloses an interconnection method for PROFIBUS DP and PROFINET communication networks through a sharing storage unit, and the method comprises the steps: (1) the sharing storage unit is divided into a register region, a pipeline region, an IO data region, and a mail box region; (2) a DP communication protocol micro-control unit detects whether there is effective DP configuration locally or not after power-on; (3) the DP communication protocol micro-control unit periodically visits the sharing storage unit to search the effective DP configuration and carry out communication data inter-transmission which serves as the communication between a DP main station maintenance gateway and a slave station; (4) an Ethernet communication protocol micro-control unit maintains PROFINET communication and communication data inter-transmission; (5) the Ethernet communication protocol micro-control unit transmits the DP configuration obtained through an Ethernet to be transmitted to the DP communication protocol micro-control unit through the sharing storage unit; (6) DP bus scanning is started according to the current state of the main station and the DP configuration when the DP communication protocol micro-control unit finds DP configuration updating. The method achieves the protocol conversion and data transmission between a PROFIBUS DP communication network and a PROFINET communication network.

Description

technical field [0001] The invention belongs to a network communication technology. Specifically, it belongs to the design of a gateway applied from PROFINET equipment to a PROFIBUSDP master station, and is a method for realizing protocol conversion and data transmission from a PROFINET communication network to a PROFIBUS communication network. Background technique [0002] PROFINET and PROFIBUSDP field bus are widely used communication protocols today. [0003] PROFINET communication is the field bus communication in development and promotion. In order to realize the interconnection between PROFINET controller and PROFIBUS network equipment, the current market needs to interconnect two different communication networks, PROFINET and PROFIBUSDP, and realize the mutual data in the two communication networks. transmission. [0004] At present, there are many mature PROFINET equipment development schemes and PROFIBUS master development schemes, but there are few gateway produc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/40H04L29/06
Inventor 李文娟彭国茂
Owner BEIJING D&S FIELDBUS TECH
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