CN107317735A - Control station network topology device, method and I＆C system - Google Patents
Control station network topology device, method and I＆C system Download PDFInfo
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- CN107317735A CN107317735A CN201710513407.8A CN201710513407A CN107317735A CN 107317735 A CN107317735 A CN 107317735A CN 201710513407 A CN201710513407 A CN 201710513407A CN 107317735 A CN107317735 A CN 107317735A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L12/40006—Architecture of a communication node
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L12/40169—Flexible bus arrangements
- H04L12/40176—Flexible bus arrangements involving redundancy
- H04L12/40182—Flexible bus arrangements involving redundancy by using a plurality of communication lines
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L12/40169—Flexible bus arrangements
- H04L12/40176—Flexible bus arrangements involving redundancy
- H04L12/40195—Flexible bus arrangements involving redundancy by using a plurality of nodes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L2012/40208—Bus networks characterized by the use of a particular bus standard
- H04L2012/40215—Controller Area Network CAN
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L2012/40208—Bus networks characterized by the use of a particular bus standard
- H04L2012/40221—Profibus
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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Abstract
The invention belongs to the technical field of Automated condtrol, the technical problem to be solved is to provide control station network topology device, method and the I＆C system that a kind of traffic rate is fast, reliability is high；Described device includes：The Ethernet between cabinet is arranged on, for transmitting request signal and answer signal between master control cabinet communication node and other cabinet communication nodes；And the bus of cabinet inside is arranged on, for transmitting the communication data between master control cabinet communication node or other cabinet communication nodes and corresponding input/output fastener；Very fast therefore, it is possible to combine ethernet technology communication speed, fieldbus has wiring simple, the characteristics of extending flexible, gives full play to the advantage of the two.
Description
Technical field
The present invention relates to network topology in the technical field of Automated condtrol, more particularly to a kind of industrial automatic control
Technical field, more particularly, to a kind of control station network topology device, method and I＆C system.
Background technology
Network topology structure is DCS (English full name Distributed Control System, dcs)
One of core design of system, it decides the key indexs such as scale, overall performance, the reliability of DCS system, and control station
Network topology structure be overall DCS system structure important component.In existing technology, common network structure has three
Kind：Ring-like, star-like, bus-type, the combination for also having this several topological structure.Network topology structure is with the fieldbus used
Combine closely, traditional fieldbus has a Profibus, CAN, RS485, FF, LonWork etc., network structure is generally bus
Type, with the development of ethernet technology, increasing product begins to use the EPA bus based on ethernet technology,
Such as Profinet, EtherCAT, PowerLink etc., network structure is mostly star-like.
Another prior art, if number of patent application is described in CN03133876.3 Chinese patent：One kind is used for work
The wireless local area network on-site bus network control station of industry field control includes：Main website, input/output module are controlled, it controls master
Stand operation of wireless lan field bus protocol stack, pass through input/output module controller and complete distributed input/output control
System, also passes through WLAN transport module transceiving data to Ethernet；Input/output module complete on-site signal collection and
Conversion；It is the intelligent control equipment based on wireless ethernet, the distributing system structure of DCS Concentrate bids,
Become new all distributed structure, control function is thoroughly distributed to scene, just can be realized in itself by control station
Control function, is especially suitable for transformation traditional industry control system, long-established enterprise's automated system is directly entered the fieldbus epoch.
Inventor has found during the present invention is realized：Conventional on-site bus has wiring simple, and extension is flexible special
Point, but traffic rate is relatively slow, and ethernet technology communication speed is very fast, having adapted to modernization quickly requires, has the disadvantage
Point-to-point communication wiring is complicated, and call duration time has uncertainty；Although EPA and wireless ethernet optimize wiring
The shortcomings of complicated, call duration time is uncertain, but often it is required for special chip to realize, the development time is long, and cost is higher.
The content of the invention
In order to solve, conventional on-site bus communication speed in the prior art is relatively slow, Ethernet wiring is complicated, EPA
The technical problems such as construction cycle length, a kind of control station network topology device that traffic rate is fast, reliability is high of present invention offer,
Method and I＆C system.
To achieve these goals, the technical scheme that the present invention is provided includes：
On the one hand, the present invention provides a kind of control station network topology device, it is characterised in that described device includes：
The Ethernet between cabinet is arranged on, for transmitting between master control cabinet communication node and other cabinet communication nodes
Request signal and answer signal；And
Be arranged on the bus of cabinet inside, for transmit master control cabinet communication node or other cabinet communication nodes with it is right
Answer the communication data between input/output fastener.
Preferably, communication node is successively in communication node and other communication machine boxes in the master control cabinet for the embodiment of the present invention
Connected by way of Ethernet is series connection.
The embodiment of the present invention preferably, synchronization, the master control cabinet communication node only and a machine in other cabinets
Case communication node communicates.
Preferably, the Ethernet between the cabinet is provided with the ethernet link of two redundancies to the embodiment of the present invention.
Preferably, the bus of each cabinet inside is provided with the CAN network chains road of two redundancies to the embodiment of the present invention.
On the other hand, the present invention also provides a kind of I＆C system, it is characterised in that the system includes：
Master control cabinet, is provided with main control unit, the communication unit and input/output cards that are connected with main control unit in it
Part；
Other cabinets, are also equipped with communication unit and input/output fastener in it；And
The control station of any one network topology device as described above；And the master control cabinet and other cabinets, pass through
Connected between the network topology device formation cabinet by Ethernet, cabinet inside is connected by bus.
Preferably, the main control unit is provided with master controller and spare controller, the master control to the embodiment of the present invention
Communication unit in cabinet processed be provided with the principal communication node that is connected respectively with master controller, spare controller by Ethernet and
Spare communication node；In the main control cabinet principal communication node and spare communication node respectively by bus with it is corresponding defeated
Enter/export fastener connection.
Preferably, the communication unit in other described cabinets is also respectively arranged with principal communication node and standby to the embodiment of the present invention
It is string to pass sequentially through Ethernet with principal communication node in communication node, and master control cabinet principal communication node and other communication machine boxes
The mode of connection is connected, and spare communication node passes sequentially through ether in the master control cabinet spare communication node and other communication machine boxes
Net connects for the mode of series connection；In other described cabinets principal communication node and spare communication node respectively by bus with it is corresponding
Input/output fastener is connected.
The third aspect, the present invention also provides a kind of control station network topological method, it is characterised in that methods described bag
Include：
Main control unit in A, master control cabinet passes through the communication unit transfer request signal in Ethernet and master control cabinet；
The communication unit that communication unit in B, other cabinets is received in master control cabinet by Ethernet, which is transmitted, asks
Signal；
Communication unit in C, cabinet is transmitted the request signal to the input in other described cabinets/defeated by bus
Go out fastener.
Preferably, the step A includes the embodiment of the present invention：The main control unit and the communication unit in master control cabinet
Ethernet communication flow be question-response form, in a communication cycle, main control unit first into master control cabinet
Communication unit request data；And the communication unit response in master control cabinet；The step B includes：The main control unit to
Communication unit request data in other cabinets, preferably, methods described also includes the corresponding communication unit embodiment of the present invention：
Ethernet between the cabinet is provided with the ethernet link of two redundancies, and the bus of each cabinet inside is provided with two
The CAN network chains road of bar redundancy；If wherein one link or communication unit break down, another link is automatically switched to.
Using above-mentioned technical proposal provided in an embodiment of the present invention, at least one of following beneficial effect can be obtained：
1st, there is provided in a kind of network topology device, method and I＆C system, by a fairly large number of input/output fastener point
Into multiple groups, i.e. cabinet, each cabinet inside has independent fieldbus, because there being input/output quantity on every fieldbus
Limit, so requirement can be also met even if traffic rate is relatively low, and bus structures wiring is very simple；On the other hand, chassis expansion
Communicate because comprising all input/output fasteners, it is necessary to speed it is higher, fieldbus can not meet requirement；Opened up using network
The mode flutterred uses the double layer network structure that is combined with bus of common Ethernet, can with reference to ethernet technology communication speed compared with
It hurry up, fieldbus has wiring simple, the characteristics of extending flexible gives full play to the advantage of the two.
2nd, ethernet communication node is connected in series；Each node and master control independent wiring are not needed, it is direct during chassis expansion
Go here and there communication node again.
3rd, all communication links and node use Redundancy Design, realize the redundancy of whole piece link, meet control system
Redundancy requirement.
The further feature and advantage of invention will be illustrated in the following description, also, partly become aobvious from specification
And be clear to, or understood by implementing technical scheme.The purpose of the present invention and other advantages can be by explanations
Specifically noted structure and/or flow are realized and obtained in book, claims and accompanying drawing.
Brief description of the drawings
Fig. 1 is a kind of structured flowchart for network topology device that the embodiment of the present invention one is provided；
Fig. 2 is a kind of structured flowchart for network topology control system that the embodiment of the present invention one is provided；
Fig. 3 is a kind of flow chart for network topological method that the embodiment of the present invention one is provided；
Fig. 4 is a kind of structured flowchart for network topology control system that the embodiment of the present invention two is provided；
Fig. 5 is a kind of flow chart for network topological method that the embodiment of the present invention two is provided.
Embodiment
Describe embodiments of the present invention in detail below with reference to drawings and Examples, how the present invention is applied whereby
Technological means solves technical problem, and reaches the implementation process of technique effect and can fully understand and implement according to this.Need explanation
, these specific descriptions are to allow those of ordinary skill in the art to be more prone to, clearly understand the present invention, rather than to this hair
Bright limited explanation；As long as and not constituting each embodiment in conflict, the present invention and each spy in each embodiment
Levying to be combined with each other, and the technical scheme formed is within protection scope of the present invention.
In addition, the step of the flow of accompanying drawing is illustrated can a such as group controller executable instruction control system
It is middle perform, and, although logical order is shown in flow charts, but in some cases, can be with different from herein
Order performs shown or described step.
Below by the drawings and specific embodiments, technical scheme is described in detail：
Embodiment one
As shown in figure 1, the present embodiment provides a kind of control station network topology device 100, the device includes：
First kind network communication link 110, it is preferable that the network communication link of the first kind is to be arranged between cabinet
Ethernet, for transmitting request signal and answer signal between master control cabinet communication node and other cabinet communication nodes；
And
Second Type network communication link 120, it is preferable that the network communication link of Second Type is to be arranged on cabinet inside
Bus (i.e. fieldbus), for transmit master control cabinet communication node or other cabinet communication nodes with it is corresponding input/it is defeated
The communication data gone out between fastener；Wherein, the input/output fastener that the present embodiment is referred to can be, but not limited to analog input end
Mouth, digital quantity input port, analog output port, digital output port, the input exported for cycle collection and cycle/
Output data, diagnostic message etc..
The Ethernet referred in the present embodiment includes Ethernet (10Mbit/s), the Fast Ethernet (100Mbit/ of standard
S) with 10G (10Gbit/s) Ethernet, they all meet IEEE802.3；The defined lines including physical layer of IEEE802.3,
The content of electric signal and medium access layer protocol；Ethernet is the most common local area network technology of current application, and it is largely
It instead of other local area network standards；After 100M Ethernets after the developing rapidly of last century Mo, gigabit Ethernet even 10G with
Too net constantly expands application just under the promotion of international organization and leader enterprise.Apply common 802.3：
10M:10base-T (copper cash UTP patterns)；
100M:100base-TX (copper cash UTP patterns)；
100base-FX (optical fiber cable)；
1000M:1000base-T (copper cash UTP patterns).
The fieldbus (Field Bus) referred in the present embodiment is that a kind of industrial data that word grows up in recent years is total
Line, it mainly solves the digital communication and these scenes between the field apparatus such as industrial intelligent instrument, controller, executing agency
Information transmission problem between control device and advanced control system (ACS)；Preferably, each cabinet is (including hereinafter for the present embodiment
Master control cabinet and other cabinets) internal fieldbus is set to CAN (controller local area network, Controller Area
Network abbreviation；It is a kind of effective serial communication network supported distributed AC servo system or controlled in real time) network chain road.
In above-mentioned network topology device, a fairly large number of input/output fastener is divided into multiple groups, i.e. cabinet, Mei Geji
There is independent fieldbus inside case, because of input/output limited amount on every fieldbus, even if so traffic rate is relatively low
Also requirement can be met, and bus structures wiring is very simple；On the other hand, chassis expansion communication is because including all input/output
Fastener, it is necessary to speed it is higher, fieldbus can not meet requirement；By the way of network topology using common Ethernet with
The double layer network structure that bus is combined, can combine ethernet technology communication speed comparatively fast, fieldbus has wiring simple,
The characteristics of extending flexible, gives full play to the advantage of the two.
Preferably, the control station that the present embodiment is provided is with network topology device 100, and cabinet quantity is adopted not over 8
When using Ethernet, most 8 of the ethernet device on a link, now using question-response form, it is ensured that repeating query week
Phase is short enough, and avoids the uncertainty of Ethernet.
As shown in Fig. 2 the present embodiment also provides a kind of I＆C system, the system includes：
Master control cabinet 200, is provided with main control unit 210, the communication unit being connected with main control unit (in accompanying drawing in it
Abbreviation communication node) 220 and input/output fastener (abbreviation port in accompanying drawing) 230；
Other cabinets 300, that is, be not provided with the cabinet of main control unit, communication unit is also equipped with it (simple in accompanying drawing
Claim communication node) 310 and input/output fastener (abbreviation port in accompanying drawing) 320；And
Above-mentioned control station network topology device；And master control cabinet and other cabinets, pass through network topology device shape
Into being connected between cabinet by Ethernet, cabinet inside is connected by bus.
As shown in figure 3, the present embodiment also provides a kind of control station network topological method, this method includes：
Main control unit in S310, master control cabinet passes through the communication unit transmission request letter in Ethernet and master control cabinet
Number；
The communication unit transmission that communication unit in S320, other cabinets is received in master control cabinet by Ethernet please
Seek signal；
Communication unit in S330, cabinet transmits request signal the input/output cards to other cabinets by bus
Part；Wherein, input/output fastener can be, but not limited to analog input port, digital quantity input port, analog output end
Mouth, digital output port, input/output data, diagnostic message for being exported with the cycle etc. are gathered for the cycle.
It should be noted that in the control station network topological method that the present embodiment is provided, the master control in master control cabinet 200
Unit 210 processed can also receive other multiple cabinets 300 and lead to other multiple cabinets 300 by Ethernet transmission signal
Cross the signal of Ethernet transmission；And between signal sends and returned between different cabinets independently of one another.
Therefore, a kind of network topology device, method and I＆C system are present embodiments provided, wherein, the side of network topology
Formula uses the double layer network structure that common Ethernet is combined with bus, can combine ethernet technology communication speed comparatively fast, existing
Field bus has wiring simple, the characteristics of extending flexible, gives full play to the advantage of the two.
Embodiment two
The present embodiment is on the basis of embodiment one, by the Ethernet and cabinet between the cabinet in network topology device
The bus in portion is arranged to communication node between redundancy, and different cabinets and arranged by way of series connection respectively.Specifically：
As shown in figure 4, main control unit 210 and standby control unit 240 are provided with master control cabinet 200, respectively with master
The communication node 220,240 that control unit 210 and standby control unit 240 are connected；Communication node 220, communication node 240 are distinguished
Different ports 230,260 are connected to by Second Type network communication link 120 (being preferably CAN)；And master control
Communication node in other cabinets 300 of cabinet 200 and first respectively by first kind network communication link 110 (be preferably with
Too net) connection；And also it is provided with and is connected respectively with main control unit 210 in master control cabinet according to Redundancy in the first cabinet
Communication node 220 communication node 310, the communication node 250 that is connected with standby control unit 240 in master control cabinet that connect connect
The communication node 330 connect, and port 320, the port 320 being connected respectively with communication nodes 310, communication nodes 330.
Preferably, main control cabinet (can also abbreviation mainframe box) needs to consider 2 equipment simultaneous faults the present embodiment
Situation, so interconnection in master control cabinet, be in order to avoid communication link switch when, master control also and then switches；Cabinet
300th, 400 consider single failure, i.e., so-called single fault principle；So the node of cabinet need not be as in master control cabinet 200
Such interconnection.
Preferably, communication node and communication node in other communication machine boxes pass sequentially through ether to the present embodiment in master control cabinet
Net connects for the mode of series connection；Ethernet between cabinet is provided with the ethernet link of two redundancies, each cabinet inside
Bus is provided with the CAN network chains road of two redundancies.
Preferably, main control unit is provided with logical in master controller and spare controller, main control cabinet the present embodiment
Letter unit is provided with the principal communication node and spare communication section being connected respectively with master controller, spare controller by Ethernet
Point；Principal communication node and spare communication node are connected by bus with corresponding input/output fastener respectively in main control cabinet.
Specifically, as shown in figure 4, connected between other different cabinets 300,400 also by first kind network communication link 110, and
The communication node 310,330,410,430, second also all designed respectively according to Redundancy inside other different cabinets 300,400
Type network communication link 120 and port 320,340,420,440.
The present embodiment preferably, synchronization, master control cabinet communication node is only and a cabinet communication section in other cabinets
Point communication.
Preferably, the communication unit in other cabinets is also respectively arranged with principal communication node and spare communication section to the present embodiment
Principal communication node passes sequentially through mode of the Ethernet for series connection in point, and master control cabinet principal communication node and other communication machine boxes
Spare communication node passes sequentially through side of the Ethernet for series connection in connection, master control cabinet spare communication node and other communication machine boxes
Formula is connected；Principal communication node and spare communication node are connected by bus with corresponding input/output fastener respectively in other cabinets
Connect.
As shown in figure 5, the present embodiment is preferably, the ethernet communication of main control unit and the communication unit in master control cabinet
Flow is the form of question-response, in a communication cycle, the communication unit request of main control unit first into master control cabinet
Data；And the communication unit response in master control cabinet；Communication unit request data of the main control unit into other cabinets, phase
Preferably, method also includes the communication unit embodiment of the present invention answered：Ethernet between cabinet be provided with two redundancies with
Too network chain road, the bus of each cabinet inside is provided with the CAN network chains road of two redundancies；If wherein one link or communication unit
Member breaks down, then automatically switches to another link.
It is further preferred that the communication node of each cabinet has a unique address, it can be found by addressing；In machine
Between case under cascaded structure, if for example, master controller to be communicated with the 5th cabinet, it is necessary to sequentially pass through the 1st, 2,3,4 machines
Case, gets to the 5th cabinet.Delay on the communication node of each cabinet is very small, such as 40ns, but this 40ns
Delay almost can be ignored relative to the 50ms cycles in our application；Therefore overall communication effect is not interfered with
Rate.
Using above-mentioned technical proposal provided in an embodiment of the present invention, at least one of following beneficial effect can be obtained：
1st, there is provided a kind of network topology device, method and I＆C system, wherein, the mode of network topology use it is common with
The double layer network structure that too net is combined with bus, can combine ethernet technology communication speed comparatively fast, fieldbus has cloth
Line is simple, the characteristics of extending flexible, gives full play to the advantage of the two.
2nd, ethernet communication node is connected in series；Each node and master control independent wiring are not needed, it is direct during chassis expansion
Go here and there communication node again.
3rd, all communication links and node use Redundancy Design, realize the redundancy of whole piece link, meet control system
Redundancy requirement.
One of ordinary skill in the art will appreciate that：Realizing all or part of step of above-mentioned each method embodiment can lead to
The related hardware of programmed instruction is crossed to complete.Foregoing program can be stored in a computer read/write memory medium.The journey
Sequence upon execution, performs the step of including above-mentioned each method embodiment；And foregoing storage medium includes：ROM, RAM, magnetic disc or
Person's CD etc. is various can be with the medium of store program codes.
Finally it should be noted that described above is only highly preferred embodiment of the present invention, not the present invention is appointed
What formal limitation.Any those skilled in the art, it is without departing from the scope of the present invention, all available
The way and technology contents of the disclosure above make many possible variations and simple replacement etc. to technical solution of the present invention, these
Belong to the scope of technical solution of the present invention protection.
Claims (11)
1. a kind of control station network topology device, it is characterised in that described device includes：
The Ethernet between cabinet is arranged on, for transmitting asking between master control cabinet communication node and other cabinet communication nodes
Ask signal and answer signal；And
Be arranged on the bus of cabinet inside, for transmit master control cabinet communication node or other cabinet communication nodes with it is corresponding defeated
Enter/export the communication data between fastener.
2. device according to claim 1, it is characterised in that communication node and other communication machine boxes in the master control cabinet
Interior communication node passes sequentially through Ethernet and connected for the mode of series connection.
3. device according to claim 1, it is characterised in that synchronization, the master control cabinet communication node only and its
A cabinet communication node communication in his cabinet.
4. the device according to any one in claims 1 to 3, it is characterised in that the Ethernet between the cabinet is set
It is equipped with the ethernet link of two redundancies.
5. the device according to any one in claims 1 to 3, it is characterised in that the bus of each cabinet inside
It is provided with the CAN network chains road of two redundancies.
6. a kind of I＆C system, it is characterised in that the system includes：
Master control cabinet, is provided with main control unit, the communication unit being connected with main control unit and input/output fastener in it；
Other cabinets, are also equipped with communication unit and input/output fastener in it；And
Such as the control station of any one network topology device in claim 1-5；And the master control cabinet and other cabinets,
By being connected between network topology device formation cabinet by Ethernet, cabinet inside is connected by bus.
7. system according to claim 6, it is characterised in that the main control unit is provided with master controller and standby control
Communication unit in device processed, the main control cabinet is provided with to be connected with master controller, spare controller by Ethernet respectively
Principal communication node and spare communication node；Principal communication node and spare communication node are respectively by total in the main control cabinet
Line is connected with corresponding input/output fastener.
8. system according to claim 7, it is characterised in that the communication unit in other described cabinets is also respectively arranged with
Principal communication node is successively in principal communication node and spare communication node, and master control cabinet principal communication node and other communication machine boxes
Connected by way of Ethernet is series connection, spare communication section in the master control cabinet spare communication node and other communication machine boxes
Point passes sequentially through Ethernet and connected for the mode of series connection；Principal communication node and spare communication node lead to respectively in other described cabinets
Bus is crossed to connect with corresponding input/output fastener.
9. a kind of control station network topological method, it is characterised in that methods described includes：
Main control unit in A, master control cabinet passes through the communication unit transfer request signal in Ethernet and master control cabinet；
Communication unit in B, other cabinets receives the communication unit transfer request signal in master control cabinet by Ethernet；
Communication unit in C, cabinet is transmitted the request signal to the input/output cards in other described cabinets by bus
Part.
10. method according to claim 9, it is characterised in that the step A includes：The main control unit and master control
The ethernet communication flow of communication unit in cabinet is the form of question-response, in a communication cycle, main control unit
The first communication unit request data into master control cabinet；And the communication unit response in master control cabinet；
The step B includes：Communication unit request data of the main control unit into other cabinets, corresponding communication unit
Response, to the last the request data and reply data of cabinet complete.
11. the method according to claim 9 or 10, it is characterised in that methods described also includes：Between the cabinet with
Too net is provided with the ethernet link of two redundancies, and the bus of each cabinet inside is provided with the CAN network chains of two redundancies
Road；If wherein one link or communication unit break down, another link is automatically switched to.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710513407.8A CN107317735B (en) | 2017-06-29 | 2017-06-29 | Network topology device and method for control station and instrument control system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710513407.8A CN107317735B (en) | 2017-06-29 | 2017-06-29 | Network topology device and method for control station and instrument control system |
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| CN107317735A true CN107317735A (en) | 2017-11-03 |
| CN107317735B CN107317735B (en) | 2023-03-24 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110891007A (en) * | 2019-11-28 | 2020-03-17 | 湖北航天技术研究院总体设计所 | Laser equipment communication system with double redundant high-speed buses |
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| CN110891007B (en) * | 2019-11-28 | 2022-03-25 | 湖北航天技术研究院总体设计所 | Laser equipment communication system with double redundant high-speed buses |
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| CN107317735B (en) | 2023-03-24 |
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