CN104345681B - A kind of programmable logic controller (PLC) and programmable logic controller (PLC) network system - Google Patents
A kind of programmable logic controller (PLC) and programmable logic controller (PLC) network system Download PDFInfo
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- CN104345681B CN104345681B CN201410360921.9A CN201410360921A CN104345681B CN 104345681 B CN104345681 B CN 104345681B CN 201410360921 A CN201410360921 A CN 201410360921A CN 104345681 B CN104345681 B CN 104345681B
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
- G05B19/058—Safety, monitoring
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/10—Plc systems
- G05B2219/16—Plc to applications
- G05B2219/163—Domotique, domestic, home control, automation, smart, intelligent house
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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Programmable Controllers (AREA)
Abstract
The present invention proposes a kind of programmable logic controller (PLC) and programmable logic controller (PLC) network system.The programmable logic controller (PLC) includes identity information storage unit and near field communication unit, wherein：Identity information storage unit, for storing the identity information of the programmable logic controller (PLC)；Near field communication unit, for sending the identity information of the programmable logic controller (PLC), and/or receive the identity information of other programmable logic controller (PLC)s.The networking solutions of programmable logic controller system are realized by near field Radio Transmission Technology, without connector or cable, improve the reliability of networking.
Description
Technical field
The present invention relates to industrial electronic engineering device technique field, more particularly to a kind of programmable logic controller (PLC) and may be programmed
Logic controller network system.
Background technology
Programmable logic controller (PLC) (PLC) is a kind of digital operation electronic installation for industrial environment application design.
The memory that its use can program, for its storage inside execution logic computing, sequential operation, timing, counting and
The instruction of the operations such as arithmetical operation, and can by digital or analog input and output, control it is various types of machinery or
Production process.PLC and its relevant ancillary equipment are generally all according to being easy to form an entirety with industrial control system, be easy to expand
Open up the principle of its function and design.
PLC system is typically complex, it is necessary to the work of networking simultaneously in systems of much equipment.It is therefore desirable to have it is directed to
The networking plan of PLC device.At present in PLC application fields, generally by communication interfaces such as Ethernet, RS485/232 come real
Networking between existing each PLC device is, it is necessary to be connected each equipment using the connectors such as RJ45, DB9 and/or communication cable.
For example in current networking mode, connected between submodule and primary module by connector, and pass through communication between primary module
Cable connection.However, after multiple plug, connector and cable all easily produce loose contact, cause to communicate unstable,
This reduces the reliability of networking.
In addition, during the networking of prior art, it is also necessary to which user voluntarily distributes for each PLC device in software
ID number, address and determination master slave relation etc..This process is very cumbersome, only professional engineer ability skilled operation, because
This this be also unfavorable for PLC extensive use.
The content of the invention
Embodiment of the present invention proposes a kind of programmable logic controller (PLC), improves the reliability of networking.
Embodiment of the present invention proposes a kind of programmable logic controller (PLC) network system, improves the reliability of networking.
Technical scheme is specific as follows：
A kind of programmable logic controller (PLC), including identity information storage unit and near field communication unit, wherein：Identity information
Memory cell, for storing the identity information of the programmable logic controller (PLC)；Near field communication unit, programmable patrolled for sending this
The identity information of controller is collected, and/or receives the identity information of other programmable logic controller (PLC)s.
The identity information of the programmable logic controller (PLC) includes：The title of programmable logic controller (PLC), FPGA
The function of controller or the points of programmable logic controller (PLC).
The programmable logic controller (PLC) further comprises networking unit, and the networking unit is used to be compiled according to described other
The identity information of journey logic controller, establish the network connection with other programmable logic controller (PLC)s.
The programmable logic controller (PLC) further comprises identity information recognition unit, and the identity information recognition unit is used for
Identity information list is set, and according to the identity information list to other programmable logic controller (PLC) identity informations for receiving
It is authenticated.
The programmable logic controller (PLC) is primary module or submodule, and the submodule is expansion variable module or simulation
Measure module.
The programmable logic controller (PLC) further comprises wireless communication unit, for being patrolled after the completion of networking programmable
Data exchange is carried out between volume controller.
A kind of programmable logic controller (PLC) network system, including primary module and submodule, wherein：Submodule, for passing through
Near-field communication modes send the identity information of itself；Primary module, for being believed by the identity of near-field communication modes receiving submodule
Breath, and according to the identity information of the submodule, establish the network connection with the submodule.
The identity information of submodule includes：The points of the title of submodule, the function of submodule or submodule.
The submodule includes identity information storage unit and near field communication unit, wherein：Identity information storage unit, use
In the identity information for storing the submodule；Near field communication unit, for sending the identity information of the submodule.
The primary module includes identity information storage unit, near field communication unit and networking unit, wherein：Identity information is deposited
Storage unit, for storing the identity information of the primary module；Near field communication unit, the identity information for receiving submodule；Networking
Unit, for the identity information according to the submodule, establish the network connection with the submodule.
The primary module further comprises identity information recognition unit：The identity information recognition unit is used to set identity to believe
List is ceased, and the submodule identity information received is filtered according to the identity information list.
The primary module and submodule further comprise wireless communication unit, and the wireless communication unit is used for complete in networking
Data exchange is carried out between programmable logic controller (PLC) after.
It can be seen from the above technical proposal that an embodiment of the invention proposes a kind of programmable logic controller (PLC),
Including identity information storage unit and near field communication unit, wherein：Identity information storage unit, for storing the FPGA
The identity information of controller；Near field communication unit, for sending the identity information of the programmable logic controller (PLC), and/or receive
The identity information of other programmable logic controller (PLC)s.As can be seen here, above-mentioned embodiment of the invention is wirelessly transferred by near field
Technology realizes the networking solutions of programmable logic controller system, without connector and/or cable, therefore improves group
The reliability of net.Moreover, the present invention transmits identity information between realizes networking, it can allow user is simple, intuitively realizes
Exchanged between equipment information and access content, compared to traditional networking mode, the present invention does not need complicated artificial setting, only
Need to be by equipment i.e. achievable networking close to each other.
Another embodiment of the present invention exchanges identity information using near field communication unit and realizes networking, and networking is completed
The exchange of mass data is then realized by wireless communication unit between programmable logic controller (PLC) afterwards.Led to using the small near field of handling capacity
Letter mode carries out networking between programmable logic controller (PLC), and the short distance information for realizing simpler ground touch exchanges.
This networking mode is simple, it is only necessary to which programmable logic controller (PLC) a period of time close to each other is with regard to that can complete networking.Meanwhile in group
After the completion of net, the program carries out data exchange using big, the real-time communication of handling capacity.The embodiment integrates
The advantages of make use of near-field communication and radio communication, good technique effect can be realized.
Brief description of the drawings
Fig. 1 is the structure chart of programmable logic controller (PLC) of the present invention；
Fig. 2 is programmable logic controller (PLC) network structure of the present invention.
Embodiment
In order that technical scheme and advantage are more clearly understood, below in conjunction with drawings and the embodiments, to this
Invention is further elaborated.It should be appreciated that embodiment described herein only illustrates this to illustrative
Invention, the protection domain being not intended to limit the present invention.
In the present invention, it is not necessary to connector and/or cable, but programmable patrol is realized by near field Radio Transmission Technology
Collect the networking solutions of controller system.
Fig. 1 is the structure chart of programmable logic controller (PLC) of the present invention.
As shown in figure 1, the programmable logic controller (PLC) 100 includes identity information storage unit 101 and near-field communication (NFC)
Unit 102, wherein：
Identity information storage unit 101, for storing the identity information of the programmable logic controller (PLC) 100；
Near field communication unit 102, for sending the identity information of the programmable logic controller (PLC) 100, and/or receive other
The identity information of programmable logic controller (PLC).
The identity information of programmable logic controller (PLC) 100 is stored with identity information storage unit 101.Identity information is used for
Identify the identity of programmable logic controller (PLC).After other programmable logic controller (PLC)s receive identity information, it can identify pair
Should be in the programmable logic controller (PLC) of the identity information.Networking tool of the identity information for whole programmable logic controller system
Have important meaning, only learn the identity information of each programmable logic controller (PLC) in system, could correct networking and
Realize correct configuration.
Preferably, the identity information of programmable logic controller (PLC) can include：The title of programmable logic controller (PLC), it can compile
The function of journey logic controller and/or the points of programmable logic controller (PLC) etc..For example identity information can identify this and can compile
Journey logic controller is primary module, expansion variable module or analog module；Identity information mark can also identify this
Which type of function programmable logic controller (PLC) possesses and with how many points etc..Exemplarily, identity information storage is single
Member 101 is specifically as follows system program memory or user program memory in programmable logic controller (PLC) 100.
Concretely primary module or submodule (including the extension signal plate) of programmable logic controller (PLC) 100.Patrolled when programmable
When volume controller 100 is embodied as primary module, networking can be actively initiated；When programmable logic controller (PLC) 100 is embodied as submodule
When, the networking of primary module can be received.
When close to each other between programmable logic controller (PLC), near field communication unit 102 can be according to near-field communication modes
The identity information of the programmable logic controller (PLC) is sent to other a range of programmable logic controller (PLC)s, and/or is received
The identity information of other programmable logic controller (PLC)s.
In near-field communication modes, it is allowed to contactless Point-to-Point Data Transmission is carried out between programmable logic controller (PLC)
(being usually in 10 centimetres) exchanges respective identity information.Identity information can pass through the electromagnetism sense of radio frequency section in frequency spectrum
Answer coupled modes transmission.
Near field communication unit 102 can exchange identity information under actively or passively pattern.In the passive mode, start near
The near field communication unit 102 of field communication, also referred to as near-field communication initiating equipment (main equipment), provide in whole communication process and penetrate
Frequency field (RF-field), it can select a kind of transmission speed in 106kbps, 212kbps or 424kbps, by identity information
It is sent to other near field communication units 102.Now, the other near field communication units 102 for receiving identity information are referred to as near-field communication
Target device (slave unit), it is not necessary to produce radiofrequency field, and use load modulation (load modulation) technology, you can with phase
The identity information of itself is transferred back to main equipment by same speed.
In one embodiment：
The programmable logic controller (PLC) 100 may further include networking unit 104.
Networking unit 104, for the identity information according to other programmable logic controller (PLC)s, establish with it is described other
The network connection of programmable logic controller (PLC).Networking unit 104 get other programmable logic controller (PLC)s identity information it
Afterwards, you can networking is started according to all identity informations.Networking unit 103 can be realized with software, can also can be compiled with scene
Journey gate array (FPGA), asic chip, complex programmable logic chip CPLD (Complex Programmable Logic
) etc. Device hardware circuit is realized.If programmable logic controller (PLC) 100 need not undertake networking task, FPGA
Controller 100 can also save networking unit 104.
In one embodiment：
The programmable logic controller (PLC) 100 may further include identity information recognition unit 1043；
Identity information recognition unit 103, for setting identity information list, and according to the identity information list to receiving
To other programmable logic controller (PLC) identity informations be authenticated.Inquiry can be passed through in identity information recognition unit 103
The mode of white list carries out legitimacy identification to the identity information received, and filters off the illegal identity letter not in white list
Breath.Such as：Legal identity information white list can be set in identity information recognition unit 104, if it is decided that receive its
His programmable logic controller (PLC) identity information is located in the legal identity information white list, then assert that identity information is legal, preserve
The identity information.Illegal identity information blacklist can be set in identity information recognition unit 103 for another example, if it is decided that be connect
Other programmable logic controller (PLC) identity informations received are located in the illegal identity information blacklist, then assert that identity information is non-
Method, abandon the identity information.
Either as primary module or the programmable logic controller (PLC) of submodule, identity information recognition unit can be included
103。
When programmable logic controller (PLC) is as primary module, illegal body can be filtered off by identity information recognition unit 103
Part information, and legal identity information realization networking is utilized by networking unit 104.
When programmable logic controller (PLC) is as submodule, illegal body can be filtered off by identity information recognition unit 103
Part information, and by the near field communication unit 102 of itself by all legal identity information transmissions to primary module, by receiving
The primary module for stating all legal identity information realizes networking.Or when programmable logic controller (PLC) is as submodule, Ke Yitong
Cross identity information recognition unit 103 and filter off illegal identity information, and all legal identity information are preserved at itself, when by the submodule
Block upgrades to after primary module, you can by calling all legal identity information realization networkings itself preserved to work.
Based on foregoing description, Fig. 2 is programmable logic controller (PLC) network structure of the present invention.
As shown in Fig. 2 the system includes primary module 200 and submodule 300, wherein：
Submodule 300, for sending the identity information of itself by near-field communication modes；
Primary module 200, for the identity information by near-field communication modes receiving submodule 300, and according to the submodule
The identity information of block 300, establish the network connection with the submodule 300.
Wherein：
Submodule 300 can include identity information storage unit 301 and near field communication unit 302, wherein：
Identity information storage unit 301, for storing the identity information of the submodule 300；
Near field communication unit 302, for sending the identity information of the submodule 300.
Primary module 200 includes identity information storage unit 201, near field communication unit 202 and networking unit 204, wherein：
Identity information storage unit 201, for storing the identity information of the primary module 200；
Near field communication unit 202, it is connected for utilizing with the near-field communication of near field communication unit 302, from near-field communication list
The identity information of first 302 receiving submodules 300；
Networking unit 204, for the identity information according to the submodule 300, establish the network with the submodule 300
Connection.
Preferably, primary module 200 further comprises identity information recognition unit 203.
Identity information recognition unit 203, for setting identity information list, and according to the identity information list to receiving
To submodule identity information be authenticated.Can be in identity information recognition unit 203 by way of inquiring about white list pair
The identity information received carries out legitimacy identification, and filters off the illegal identity information not in white list.Such as can be in body
Legal identity information white list is set in part information identificating unit 203, if it is decided that other Programmable logical controllers received
Device identity information is located in the legal identity information white list, then assert that identity information is legal, preserve the identity information.For another example
Illegal identity information blacklist can be set in identity information recognition unit 203, if it is decided that other received are programmable
Logic controller identity information is located in the illegal identity information blacklist, then assert that identity information is illegal, abandons identity letter
Breath.
In the networking plan of the present invention, near field Radio Transmission Technology can be directly utilized, is without connector and cable
Networking can be achieved.When creating network system, it is only necessary to each programmable logic controller (PLC) is close to each other, pass through nothing in frequency spectrum
The electromagnetic induction coupled modes of line frequency part transmit identity information, and each programmable logic controller (PLC) can be mutually distinguishable and complete
Into networking.The present invention can also aid in the wireless communication technique with long range again, realize and largely count between programmable logic controller (PLC)
According to the communication with state.As shown in Fig. 2 primary module 200 and submodule 300 can include wireless communication unit 205 and channel radio
Believe unit 305.So, near field communication unit 202,302 can be utilized to exchange identity information, realizes networking.Can after the completion of networking
The exchange of mass data is then real by the first wireless communication unit 205, the second wireless communication unit 305 between programmed logic controller
It is existing.First wireless communication unit 205 and the second wireless communication unit 305 can be the Wireless Telecom Equipments such as WIFI, ZIGBEE.The party
Case carries out networking using the small near-field communication modes of handling capacity between primary module 200 and submodule 300, realizes simpler
The short-range device information of ground touch exchanges.This networking mode is simple, it is only necessary to which programmable logic controller (PLC) is close to each other
A period of time is with regard to that can complete networking.Meanwhile after the completion of networking, the program utilizes big, the real-time radio communication of handling capacity
Mode carries out data exchange.The distance between conventional programmable logic controller is difficult in the effective range of near-field communication
One wireless communication unit 205, the second wireless communication unit 305 may insure can be steady between primary module 200 and submodule 300
Determine, quickly transmit mass data.In addition, in fig. 2, the first wireless communication unit 205, the second wireless communication unit 305
Pairing, networking can also be realized by near field communication unit 202,302.First wireless communication unit 205, the second radio communication list
Pairing, the networking of member 305 are required for interaction and confirm identity information.Prior art need visual device and input equipment (such as
Keyboard and display) to interact identity information and input password carry out authentication.The present invention can lead to by using near field
Letter unit 202,302 saves the first wireless communication unit 205, the second wireless communication unit 305 matches, networking when need it is visual
Equipment and input equipment.
The present invention can allow user simply, intuitively to realize exchanged between equipment information and access content.Compared to tradition
Networking mode, without performing complicated setting only networking need to can be achieved by equipment is close to each other in the present invention.
The better embodiment of the present invention is the foregoing is only, is not intended to limit the invention, it is all the present invention's
All any modification, equivalent and improvement made within spirit and principle etc., should be included in the scope of the protection.
Claims (4)
1. a kind of programmable logic controller (PLC), it is characterised in that including identity information storage unit, near field communication unit, networking
Unit and identity information recognition unit, wherein：
Identity information storage unit, for storing the identity information of the programmable logic controller (PLC)；
Near field communication unit, for sending the identity information of the programmable logic controller (PLC), and/or receive other FPGAs
The identity information of controller；
Networking unit, for the identity information according to other programmable logic controller (PLC)s, establish and may be programmed with described other
The network connection of logic controller；
Identity information recognition unit, for setting identity information list, and according to the identity information list to receive its
He is authenticated programmable logic controller (PLC) identity information.
2. programmable logic controller (PLC) according to claim 1, it is characterised in that further comprise wireless communication unit,
For data exchange to be carried out between programmable logic controller (PLC) after the completion of networking.
A kind of 3. programmable logic controller (PLC) network system, it is characterised in that including primary module and submodule, wherein：
Submodule, for sending the identity information of itself by near-field communication modes；
Primary module, believe for the identity information by near-field communication modes receiving submodule, and according to the identity of the submodule
Breath, establish the network connection with the submodule；
The submodule includes：
Identity information storage unit, for storing the identity information of the submodule；
Near field communication unit, for sending the identity information of the submodule；
The primary module includes：
Identity information storage unit, for storing the identity information of the primary module；
Near field communication unit, the identity information for receiving submodule；
Networking unit, for the identity information according to the submodule, establish the network connection with the submodule；
Identity information recognition unit, for setting identity information list, and according to the identity information list to the son that receives
Module identity information is authenticated.
4. programmable logic controller (PLC) network system according to claim 3, it is characterised in that the primary module and submodule
Block further comprises wireless communication unit, and the wireless communication unit is used for after the completion of networking between programmable logic controller (PLC)
Carry out data exchange.
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| CN201410360921.9A CN104345681B (en) | 2013-07-29 | 2014-07-25 | A kind of programmable logic controller (PLC) and programmable logic controller (PLC) network system |
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| CN201320455875.1 | 2013-07-29 | ||
| CN2013204558751 | 2013-07-29 | ||
| CN201410360921.9A CN104345681B (en) | 2013-07-29 | 2014-07-25 | A kind of programmable logic controller (PLC) and programmable logic controller (PLC) network system |
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| EP1635508A1 (en) * | 2004-09-08 | 2006-03-15 | Koninklijke Philips Electronics N.V. | Secure pairing for wireless communications devices |
| CN201146522Y (en) * | 2008-01-16 | 2008-11-05 | 上海复旦微电子股份有限公司 | Apparatus for exchanging information between a plurality of equipments based on NFC technique |
| CN101513969A (en) * | 2009-03-06 | 2009-08-26 | 山东泰山天盾矿山机械有限公司 | High-voltage multi-PLC converter low-frequency brake electric control system of a lifter |
| US8045961B2 (en) * | 2009-06-22 | 2011-10-25 | Mourad Ben Ayed | Systems for wireless authentication based on bluetooth proximity |
| CN102103765A (en) * | 2009-12-16 | 2011-06-22 | 中兴通讯股份有限公司 | Access control and information display system, method and terminal |
| CN102984698A (en) * | 2011-09-06 | 2013-03-20 | 中兴通讯股份有限公司 | Near field communication safety protection method and mobile communication terminal |
| KR20130063604A (en) * | 2011-12-07 | 2013-06-17 | 현대자동차주식회사 | An log-in system for web in platform of vehicle using near field communication phone |
| KR101518555B1 (en) * | 2013-06-05 | 2015-05-07 | 이화여자대학교 산학협력단 | Method of Authenticating a payment using Bilinear Pairing in NFC Mobile Payment System and NFC Mobile Payment System |
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