CN102497360A - Method for realizing data association and communication among programmable logic controllers (PLC) of different types - Google Patents
Method for realizing data association and communication among programmable logic controllers (PLC) of different types Download PDFInfo
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- CN102497360A CN102497360A CN2011103977768A CN201110397776A CN102497360A CN 102497360 A CN102497360 A CN 102497360A CN 2011103977768 A CN2011103977768 A CN 2011103977768A CN 201110397776 A CN201110397776 A CN 201110397776A CN 102497360 A CN102497360 A CN 102497360A
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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
The present invention relates to a kind of data communication technology, specifically a kind of method that realizes that the various PLC data interconnect.
Background technology
In industrial automation control, line management, enterprise management informatization flourish today, various detections, control, communication apparatus are of a great variety, and communication protocol also has nothing in common with each other in the system, the PLC that particularly in industry, is used widely.The PLC system manufacturer of various brands for various purposes; Its communications protocol is maintained secrecy; Directly cause the database of management level to be difficult to obtain the basal layer automated information; The database information of interdepartmental system obtains then difficult, has so not only hindered the fast development of automation and network technology, and has increased cost.
Summary of the invention
To above-mentioned deficiency, the invention provides a kind of method that realizes that the various PLC data interconnect, it not only can realize that the data between the various PLC interconnect, and can reduce cost.
The present invention solves the technical scheme that its technical problem takes:
A kind of method that realizes that the various PLC data interconnect is characterized in that, may further comprise the steps:
1) obtains the communication packet form of PLC;
2) input side plc data bag is resolved;
3) the plc data bag data of resolving are carried out code conversion;
4) data encapsulation writes.
The said method of obtaining the communication packet form may further comprise the steps:
A) connect with PLC;
B) obtain the configuration information of the PLC that connects;
C) the communication packet form of PLC is resolved.
Said code conversion is with being intermediate code to the plc data bag data conversion of resolving.
It is according to the communication packet form of outlet side PLC the packet data of resolving to be encapsulated again to send to outlet side PLC that said data encapsulation writes.
The invention has the beneficial effects as follows: the present invention has realized reaching the purpose of data sharing between all kinds PLC, between the various disparate databases and the function that interconnects of various different system data, has realized the transparence and sharedization of data.Simultaneously; For industrial automation control has solved interconnecting of data between the different PLC system; To promoting the fast development of automation and network technology,, provide strong data to support for realizing enterprise's overall situation and system benefit maximization for enterprise reduces cost, raises the efficiency.The present invention has realized that not only the data between the various PLC interconnect, and has reduced cost.
Description of drawings
Fig. 1 is that the present invention realizes the interconnect structural representation of system of various PLC data;
Fig. 2 is the interconnect high-level schematic functional block diagram of software of the present invention;
Fig. 3 is the schematic flow sheet of the inventive method.
Embodiment
As depicted in figs. 1 and 2, a kind of realization various PLC data of the present invention system that interconnects is based on the data communication of the computer and the PLC of Ethernet.This system comprises and is mounted with the interconnect computer of application software of data that said computer is connected with PLC through Ethernet interface.The functional module that said data interconnect comprises input interface module, output interface module, data read module, data resolution module, data conversion module and encapsulation writing module; Said input interface module is connected with the Ethernet that is connected with PLC respectively with output interface module; Said data read module module is used to obtain configuration information and the packet of the PLC that has connected; Said data resolution module is used for according to the PLC configuration information that obtains its current message format being resolved; And input side plc data bag resolved; Said data conversion module is used for the packet data of resolving is converted into intermediate code and deposits the memory block in, and said encapsulation writing module encapsulates the packet data of resolving again according to the communication packet form of outlet side PLC and writes outlet side PLC.
As shown in Figure 2, a kind of method that realizes that the various PLC data interconnect, its implementation procedure may further comprise the steps:
Step 107, data encapsulation writes, and according to the communication packet form of outlet side PLC the packet data of resolving is encapsulated again and sends to outlet side PLC.
The present invention has realized reaching the purpose of data sharing between the various main flow model PLC, between the various disparate databases and the function that interconnects of various different system data, has realized the transparence and sharedization of data.
Design of System Software of the present invention has following characteristics:
1) has the Network Isolation ability, have network and interrupt reconnecting automatically function.
2), have online heat and be equipped with ability, have control and warning input and output that rigid line connects.
3), have Ethernet remote monitoring diagnostic function, have that data interconnect mutually between the network commutator.
4), have ODBC, ADO database concatenation ability, can directly read and increase newly data record in the network data base.
5), have and connect a plurality of various PLC, a plurality of database function simultaneously.
Claims (4)
1. a method that realizes that the various PLC data interconnect is characterized in that, may further comprise the steps:
1) obtains the communication packet form of PLC;
2) input side plc data bag is resolved;
3) the plc data bag data of resolving are carried out code conversion;
4) data encapsulation writes.
2. a kind of method that realizes that the various PLC data interconnect according to claim 1 is characterized in that, the said method of obtaining the communication packet form may further comprise the steps:
A) connect with PLC;
B) obtain the configuration information of the PLC that connects;
C) the communication packet form of PLC is resolved.
3. a kind of method that realizes that the various PLC data interconnect according to claim 1 is characterized in that, said code conversion is with being intermediate code to the plc data bag data conversion of resolving.
4. a kind of method that realizes that the various PLC data interconnect according to claim 1 is characterized in that, it is according to the communication packet form of outlet side PLC the packet data of resolving to be encapsulated again to send to outlet side PLC that said data encapsulation writes.
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| CN2011103977768A CN102497360A (en) | 2011-12-05 | 2011-12-05 | Method for realizing data association and communication among programmable logic controllers (PLC) of different types |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102799137A (en) * | 2012-08-22 | 2012-11-28 | 国电联合动力技术有限公司 | Method for cross-platform transportation of programmable logic controller (PLC) software of wind power control system |
| CN102830649A (en) * | 2012-08-22 | 2012-12-19 | 国电联合动力技术有限公司 | Method used for cross-platform transplantation of software of PLC (Programmable Logic Controller) of wind power control system |
| CN106292504A (en) * | 2015-06-26 | 2017-01-04 | 核工业西南物理研究院 | Fusion facility PLC cluster message shared system |
| CN106534187A (en) * | 2016-12-13 | 2017-03-22 | 广东沅朋网络科技有限公司 | Unified management method and system for multi-type wireless data transmission terminal |
| CN110764460A (en) * | 2018-07-25 | 2020-02-07 | 君泰创新（北京）科技有限公司 | Preprocessing method, control method and system of programmable logic controller |
| CN111885048A (en) * | 2020-07-21 | 2020-11-03 | 湖南九章智云科技有限责任公司 | Method, system and device for data interaction between different systems |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102799137A (en) * | 2012-08-22 | 2012-11-28 | 国电联合动力技术有限公司 | Method for cross-platform transportation of programmable logic controller (PLC) software of wind power control system |
| CN102830649A (en) * | 2012-08-22 | 2012-12-19 | 国电联合动力技术有限公司 | Method used for cross-platform transplantation of software of PLC (Programmable Logic Controller) of wind power control system |
| CN102799137B (en) * | 2012-08-22 | 2014-07-02 | 国电联合动力技术有限公司 | Method for cross-platform transportation of programmable logic controller (PLC) software of wind power control system |
| CN102830649B (en) * | 2012-08-22 | 2015-02-04 | 国电联合动力技术有限公司 | Method used for cross-platform transplantation of software of PLC (Programmable Logic Controller) of wind power control system |
| CN106292504A (en) * | 2015-06-26 | 2017-01-04 | 核工业西南物理研究院 | Fusion facility PLC cluster message shared system |
| CN106534187A (en) * | 2016-12-13 | 2017-03-22 | 广东沅朋网络科技有限公司 | Unified management method and system for multi-type wireless data transmission terminal |
| CN110764460A (en) * | 2018-07-25 | 2020-02-07 | 君泰创新（北京）科技有限公司 | Preprocessing method, control method and system of programmable logic controller |
| CN111885048A (en) * | 2020-07-21 | 2020-11-03 | 湖南九章智云科技有限责任公司 | Method, system and device for data interaction between different systems |
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Application publication date: 20120613 |