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Method for realizing data association and communication among programmable logic controllers (PLC) of different types

A type of data interconnection and type technology, applied in the field of data communication, can solve the problems of difficulty in obtaining database information, increasing costs, and difficulty in obtaining basic layer automation information in the database, achieving the effects of transparency and sharing, improving efficiency and reducing costs

Inactive Publication Date: 2012-06-13
SHANDONG IRON & STEEL CO LTD
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  • Application Information

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Problems solved by technology

Various brands of PLC system manufacturers keep their communication protocols secret for various purposes, which directly makes it difficult for the management database to obtain basic layer automation information, and it is difficult to obtain cross-system database information, which not only hinders automation and The rapid development of network technology and the increased cost

Method used

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  • Method for realizing data association and communication among programmable logic controllers (PLC) of different types
  • Method for realizing data association and communication among programmable logic controllers (PLC) of different types
  • Method for realizing data association and communication among programmable logic controllers (PLC) of different types

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Embodiment Construction

[0020] Such as figure 1 with figure 2 As shown, the present invention realizes different types of PLC data interconnection and intercommunication system, data communication between computer and PLC based on Ethernet. The system includes a computer loaded with data interconnection application software, and the computer is connected to the PLC through an Ethernet port. The functional modules of the data interconnection include an input interface module, an output interface module, a data reading module, a data analysis module, a data conversion module and an encapsulation writing module, and the input interface module and the output interface module are respectively connected with a PLC Ethernet is connected, the data reading module module is used to obtain the configuration information and the data packet of the connected PLC, and the data analysis module is used to analyze its communication message format according to the obtained PLC configuration information, and to The i...

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Abstract

The invention discloses a method for realizing data association and communication among programmable logic controllers (PLC) of different types. The method comprises the following steps of: 1) acquiring communication message formats of the PLCs; 2) resolving an input side PLC data packet; 3) transcoding the resolved data of the PLC data packet; and 4) packaging and writing the data. By the method, a data association and communication function is realized among various PLCs, various databases and various systems, so that the aim of data sharing is fulfilled, and the transparency and sharing of the data are realized. Simultaneously, problems about the data association and communication among different PLC systems in industrial automatic control are solved, and a powerful data support is provided for the promotion of quick development of automation and network technologies, the cost reduction and efficiency improvement of enterprises and the realization of enterprise globalization and system benefit maximization. By the method, not only the data association and communication among the PLCs of the different types is realized, but also cost is reduced.

Description

technical field [0001] The invention relates to a data communication technology, in particular to a method for realizing interconnection and intercommunication of different types of PLC data. Background technique [0002] Today, with the vigorous development of industrial automation control, production line management, and enterprise management informatization, there are various types of detection, control, and communication equipment, and the communication protocols in the system are also different, especially PLC, which is widely used in industry. Various brands of PLC system manufacturers keep their communication protocols secret for various purposes, which directly makes it difficult for the management database to obtain basic layer automation information, and it is more difficult to obtain cross-system database information, which not only hinders automation and The rapid development of network technology has increased costs. Contents of the invention [0003] In view...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/06
Inventor 董彬苗青季陆伟赵斌迟猛王轶
Owner SHANDONG IRON & STEEL CO LTD
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