CN101179399A - Exchange set with extension function and standby system thereof - Google Patents
Exchange set with extension function and standby system thereof Download PDFInfo
- Publication number
- CN101179399A CN101179399A CNA2006101437995A CN200610143799A CN101179399A CN 101179399 A CN101179399 A CN 101179399A CN A2006101437995 A CNA2006101437995 A CN A2006101437995A CN 200610143799 A CN200610143799 A CN 200610143799A CN 101179399 A CN101179399 A CN 101179399A
- Authority
- CN
- China
- Prior art keywords
- switch
- port
- lan
- terminal
- terminal installation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Small-Scale Networks (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
An exchange device and backup system with extended function is provided and used for a plurality of terminal devices in the local area network. The invention comprises a signal exchange unit, a connecting unit and a first exchanger. The exchange unit has a plurality of connecting port; one of the connecting ports serves as the connecting interface between the local area network and the outside and the other connecting ports are connected with the plurality of terminal devices respectively. The connecting unit is used for providing a network framework between the local area network and the outside. A first exchanger is connected with the connecting port among the plurality of connecting ports of the exchange unit, which connects the local area network with the outside. The first exchanger is also connected with the connecting unit. The first exchanger can choose to be connected with one terminal device that is not connected with the connecting port of the signal exchange unit to detect whether the connecting port, which connects the local area network with the outside, is connected with the terminal device. According to the detected results, data transfer paths of the connecting port connected with the outside is switched accordingly either to be an internal local area network or to be an external network framework.
Description
Technical field
The present invention relates to a kind of switch, particularly a kind ofly be applied in the network architecture and the switch and the standby system thereof of tool extended function.
Background technology
Along with the maturation with network technology popularized of electronic data processing equipment, network has become in the life information transmission and has obtained indispensable some.And even no matter be government bodies, incorporated business, sub-district family of school, for asking the lifting of information transfer efficiency, it is quite general to carry out the information transmission by network between the user.
In order to make most terminal installation users can efficient shared network frequency range, therefore produce the switch hub that improves traditional hub (Hub), be called for short the generation of switch (Switch).Switch and the hub function in network is roughly the same, Zui Da difference is that each port (port) of switch all enjoys an exclusive frequency range and possess data exchanging function therebetween, make Network Transmission usefulness reach at one time in can data quantity transmitted bigger; Hub is for then being all shared frequency ranges in port (port).
Particularly, switch is used for the entity section of connected network, and the data between section can be circulated mutually.Switch comes direct traffic in the second layer (layer 2) operation of OSI (Open System Interconnection) model according to the address of the second layer; Ethernet (Ethernet) MAC (Media Access Control Address) address for example.Some switch also provides other function, for example Virtual Local Area Network and the 3rd layer of function such as exchange.The exchange function sets up and can intercept the flow of each Ethernet connectivity port on their own, and learns the binding situation of terminal installation that the connectivity port links.Then, exchange opportunity directly transmits flow and gives the purpose Port.The exchange flow process can effectively be carried out without delay according to the processing speed of hardware.
It is specified that existing switch provides the connectivity port that is connected to this terminal installation to be manufacturer.For example, manufacturer can produce the switch with 12 Ports, in 12 Ports, there is 1 connectivity port to be connected with network (Ethernet as described above), providing coupled terminal installation to be connected with other long-range terminal installation by this network, remaining 11 Ports only can provide 11 terminal installation connections as server etc.In fact, existing server is a reduced volume, how to be integrated in the single cabinet with the blade point type server form, and present single cabinet can hold 12 blade point type servers usually.Therefore, if have the switch of 12 Ports with single server cabinet correspondence with 12 blade point type servers, then one of them cutter point server will must be connected with network because of 1 connectivity port in this switch, can't be connected to network, unless additionally increase a switch.Yet newly-increased switch only provides 1 Port to aforementioned remaining blade point type server, and deduction is 1 connectivity port that is connected with network in addition, has 10 Ports idle.
In sum, how a kind of switch with extended function can be provided, and become present problem demanding prompt solution.
Summary of the invention
For solving the shortcoming of aforementioned known prior art, main purpose of the present invention is to provide a kind of switch and redundant standby system thereof with extended function, and the connectivity port that switch is provided is enough to provide the interior all cutter point servers of machine box for server to set up the relation that network is connected with external network.
A further object of the present invention is to provide a kind of redundant standby system with switch of extended function, and with when the master breaks down with switch, but the standby switch of notice normal operation is taken over the main work with switch that this breaks down.
Realize above-mentioned purpose and other purpose for reaching, the invention provides a kind of switch and redundant standby system thereof with extended function.This switch system with extended function is applied in the interior a plurality of terminal installations of LAN, this switch system with extended function comprises: the signal signal exchange unit, have a plurality of Ports, the Port that connectivity port conduct and this LAN of one of them externally is connected, remaining Port system is connected separately with these a plurality of terminal installations respectively; Linkage unit externally connects a network architecture in order to this LAN to be provided; And the first interchanger switch, in system and a plurality of connectivity ports that this signal signal exchange unit is provided as the Port connection that externally is connected with this LAN, this first interchanger switch also is connected with linkage unit, and this first interchanger switch system optionally connects with a terminal installation that is not connected with the connectivity port of this signal signal exchange unit, wherein whether be connected with the Port that this LAN externally is connected with this terminal installation in order to detect this conduct, and according to one of them person of the network architecture of the corresponding data transfer path that switches the connectivity port that this conduct and this LAN externally be connected of detecting result LAN that is inside and outside.
For achieving the above object, the present invention also provides a kind of redundant standby system of the switch with extended function, system is applied in the interior a plurality of terminal installations of LAN, and a plurality of terminal installations in this LAN have main Port and standby connectivity port separately, this redundant standby system system comprises: first switch, it is to be the main switch of using, it has the signal signal exchange unit, linkage unit, the first interchanger switch, the second interchanger switch and the 3rd interchanger switch, this signal signal exchange unit has a plurality of Ports, the Port that connectivity port conduct and this LAN of one of them externally is connected, and the Port of one of them then is connected with the second interchanger switch, and remaining Port system is connected separately with the main connectivity port of these a plurality of terminal installations respectively; This linkage unit externally connects a network architecture in order to this LAN to be provided; And this first interchanger switch connects with the connectivity port with the master of a terminal installation that is not connected with the connectivity port of this signal signal exchange unit; Second switch, it is to be standby switch, it has signal signal exchange unit, linkage unit, the first interchanger switch, the second interchanger switch and the 3rd interchanger switch, the signal signal exchange unit of this second switch has a plurality of Ports, the Port that connectivity port conduct and this LAN of one of them externally is connected, and the Port of one of them then is connected with the second interchanger switch of this second switch, and remaining Port system is connected separately with the standby connectivity port of these a plurality of terminal installations respectively; This linkage unit externally connects a network architecture in order to this LAN to be provided; This first interchanger switch connects with the standby connectivity port of a terminal installation that is not connected with the connectivity port of local terminal signal signal exchange unit; Wherein, the second interchanger switch of this first switch system connects with the main connectivity port of a terminal installation that is not connected with a plurality of connectivity ports that local terminal signal signal exchange unit is provided, and should be standby connectivity port connection with a terminal installation that is not connected with a plurality of connectivity ports that local terminal signal signal exchange unit is provided with the second interchanger switch of second switch; And the 3rd interchanger switch of this first switch system is connected with first interchanger switch of local terminal and the second interchanger switch of local terminal, and the 3rd interchanger switch also is connected with the linkage unit of local terminal, wherein whether this first switch is connected with the connectivity port of terminal installation in order to detect this first interchanger switch and the second interchanger switch, and according to the corresponding data transfer path that switches local terminal first interchanger switch and the local terminal second interchanger switch of detecting result be inner LAN and or the network architecture of outside wherein one; And the 3rd interchanger switch of second switch system is connected with first interchanger switch of local terminal and the second interchanger switch of local terminal, and the 3rd interchanger switch also is connected with the linkage unit of local terminal, wherein whether this second switch is connected with the connectivity port of terminal installation in order to detect this first interchanger switch and the second interchanger switch, and according to the corresponding data transfer path that switches local terminal first interchanger switch and the local terminal second interchanger switch of detecting result be inner LAN and or the network architecture of outside wherein one.
Compared to than known prior art, switch with extended function of the present invention and redundant standby system thereof can allow the known existing interchanger switch that only possesses 11 Ports that internally connect also can use the Ethernet of 10Gb to carry out for 12 terminal installations to transmit.Moreover, redundant standby system with switch of extended function of the present invention is that the master uses and the terminal installation of standby connectivity port to having through interconnecting and overlap by this network architecture, can provide this terminal installation when the switch with extended function of one of them breaks down, can switch to the switch with extended function of normal operation in good time, thereby interrupt interconnecting of the terminal installation and the network architecture because of switch fault with extended function in order to do minimizing.In addition, switch and redundant standby system thereof with extended function of the present invention provides most individual terminal installations application elasticity that external networks connect, no longer be subject to the Port quantity that the network switch switch is provided, therefore, switch with extended function of the present invention and redundant standby system thereof for example can increase the value of the product of cutter point server and the transmittability that outer network is connected.
Description of drawings
Fig. 1 is the application architecture schematic diagram with switch of extended function of the present invention; And
Fig. 2 is the application architecture schematic diagram of the standby system of the switch with extended function of the present invention.
Description of reference numerals
1 has the switch of extended function
11 switches
12,32,32 ' signal exchange unit
122,322 Ports
16,30,30 ' linkage unit
2 network architectures
3 first switches
3 ' second switch
The main Port of 300a
The standby Port of 300b
300c alert signal line
301~312 servers
330,330 ' first switch
331,331 ' second switch
332,332 ' the 3rd switch
Embodiment
Below by particular specific embodiment explanation embodiments of the present invention, those skilled in the art can understand other advantage of the present invention and function easily by the disclosed content of this specification.The present invention also can be implemented or be used by other different specific embodiment, and the every details in this specification also can be based on different viewpoints and application, carries out various modifications and change under the spirit of the present invention not deviating from.
See also Fig. 1, it is the application architecture schematic diagram with switch of extended function of the present invention.As shown in the figure, the switch 1 with extended function of the present invention is applied to have the network architecture 2 of terminal installation 301~312.In the present embodiment, the LAN (LAN) that this network architecture 2 is the Ethernet framework is in order to provide a plurality of terminal installations 301~312 to link mutually by the switch 1 with extended function of the present invention and/or to carry out the transmission of flow with long-range terminal installation.In the present embodiment, this flow refers to be transmitted or be received from by server the information of other server and/or long-range terminal installation, and wherein, this terminal installation 301~312 is for example cutter point server.
Switch 1 with extended function of the present invention comprises switch 11, signal exchange unit 12 and linkage unit 16.
This signal exchange unit 12 is the process chip of 10Gb Ethernet switch (switch or switchhub) for example, use for the mutual swap data of the terminal installation in the LAN (301~312) energy, the signal exchange unit 12 of present embodiment is for having 12 connectivity ports 122,11 Ports 122 in this signal exchange unit 12 are connected with this terminal installation 301~311 separately, remaining then conduct and the external Port that is connected of another Port 122, owing to be connected with this switch 11 and this terminal installation 312 as the Port 122 that externally connects, so optionally make 12 terminal installations 301~312 form internal network, or by the Port 122 that this conduct externally connects 12 terminal installations 301~312 being connected with the network architecture 2 forms the network that can externally connect by this signal exchange unit 12.
This signal exchange unit 12 confirms that according to the flow of current network connectivity port 122 transmission demand of the terminal installation 301~312 that Port 122 is linked is carried out internal or external transfer of data.In the present embodiment, this signal exchange unit 12 has 12 Ports 122, and the Port 122 that one of them conduct externally connects is because of being connected with this switch 11, and this switch 11 connects with terminal installation 312 and the linkage unit that is connected with the network architecture 2 16 respectively, so this signal exchange unit 12 all can use the Ethernet of 10Gb to carry out transmission by the switch 11 that is connected with the network architecture 2 for 12 terminal installations 301~312, so the switch 1 with extended function of the present invention can allow the Ports 122 that only possess 11 internal connections also can use the Ethernet of 10Gb to carry out transmission for 12 terminal installations 301~312.
See also Fig. 2, it is the application architecture schematic diagram of the standby system of the switch with extended function of the present invention.As shown in the figure, in the present embodiment, standby system with switch of extended function of the present invention has first switch 3 and second switch 3 ', and this first switch 3 and second switch 3 ' interconnect by this network architecture 2, present embodiment provides a kind of network switch back mechanism, break down because of the single switch that has extended function preventing, and influence all terminal installations internally or to the data transmission and processing of outer network, present embodiment removes the second newly-increased switch (331,331 ') and the 3rd switch (332,332 '), and terminal installation 301~312 and first and second switch (3,3 ') outside the annexation difference between, effect between all the other members is all identical with Fig. 1, so will not give unnecessary details in addition at this.
This terminal installation 301~312 all has a main Port 300a and a corresponding standby Port 300b, with regard to present embodiment, this Port (300a, 300b) be meant the Ethernet connectivity port of 10Gb, and this terminal installation 302~311 is respectively with two Port (300a that it had, 300b) be connected directly to first and second switch (3 separately, 3 ') Port (322,322 '), and only terminal installation 301 and 312 two terminal installations of terminal installation respectively with two Ports (300a that it had, 300b) be connected to first and second switch (3 separately indirectly, 3 ') Port (322,322 '), wherein 312 two terminal installations of this terminal installation 301 and terminal installation have an alert signal line 300c respectively, in order to inform this first and second switch (3,3 ') whether it is connected with it, that is, when the main connectivity port 300a of this terminal installation 301 and 312 two terminal installations of terminal installation or standby Port 300b and first or second switch (3 or 3 ') when being connected, the alert signal line 300c of this terminal installation 301 and 312 two terminal installations of terminal installation promptly transmits a signal and gives first or second switch (3 or 3 '), make this first or second switch (3 or 3 ') learn whether this terminal installation 301 or terminal installation 312 are connected with it, it is main with switch or standby switch setting first or second switch (3 or 3 ') simultaneously, with regard to present embodiment, because the main connectivity port 300a of this terminal installation 301 and terminal installation 312 all is connected with first switch 3, so this first switch 3 is the main switch of using, and the standby connectivity port 300b of this terminal installation 301 and terminal installation 312 all is connected with second switch 3 ', so this second switch 3 ' is standby switch.
Generally speaking, this terminal installation 301~312 only has main Port 300a that this terminal installation 301~312 and first switch, 3 interconnective functions are provided, when first switch 3 breaks down, by the work that second switch 3 ' that is connected with standby Port 300b is taken over this first switch 3, reach the effect of backup.
Wherein, but the alert signal line 300c by this terminal installation 301 and 312 two terminal installations of terminal installation notifies first or second switch (3 or 3 ') of normal operation to carry out switch operating, work with the switch that breaks down by its adapter, with present embodiment, it is the active and standby opportunity of working and switching of alert signal line 300c switching with switch (3,3 ') by the terminal installation 312 that is connected with first switch (330,330 ').
Moreover, because first switch (330,330 '), second switch (331,331 ') and the 3rd switch (332,332 ') annexation and first and second switch (3 between, 3 ') be under the normal situation, when if this terminal installation 312 is not provided with, that is, this terminal installation 312 all not with first and second switch (3,3 ') connect down, this terminal installation 301 can be by Port (300a or 300b) own by second switch (331,331 ') and the 3rd switch (332,332 ') can be directly switch into the outside network architecture 2, must be by first switch (330,330 ') notify the 3rd switch (332,332 ') carry out the switching operation of transmission channel, so make this terminal installation 301 by second switch (331,331 ') and the 3rd switch (332,332 ') and directly use the Ethernet of 10Gb.The signal that the alert signal line 300c of the terminal installation 312 that this switching mode system foundation is connected with first switch (330,330 ') is transmitted is carried out the foundation of switch operating for second switch (331,331 ') and the 3rd switch (332,332 ') conduct.
In the present embodiment, this first and second switch (3,3 ') interconnects and overlaps to the terminal installation 301~312 with the usefulness led and standby Port (300a, 300b) by this network architecture 2, can provide this terminal installation 301~312 in first or second switch (3 or 3 ') when breaking down, can switch to the switch of normal operation, thereby minimizing is interrupted interconnecting of the terminal installation 301~312 and the network architecture 2 because of first or second switch (3 or the 3 ') fault in good time.
Moreover, in the present embodiment, first and second switch (3,3 ') the application elasticity that provides most the external networks of terminal installation to connect, especially be applied on the cutter point server, need not cooperate existing 10Gb Ethernet switch only can make 11 knife edge servo units in the cutter point server with 12 knife edge servo units (being terminal installation) use external network because of 12 Ports that it provided, therefore, switch with extended function of the present invention and standby system thereof for example can increase the value of the product of cutter point server and the transmittability that outer network is connected.
The foregoing description only is illustrative principle of the present invention and effect thereof, but not is used to limit the present invention.Any those skilled in the art all can be under spirit of the present invention and category, and the foregoing description is made amendment and changed.Therefore, the scope of the present invention, claims are listed as the aforementioned.
Claims (6)
1. switch with extended function is applied to it is characterized in that this switch with extended function comprises in a plurality of terminal installations in the LAN:
Signal exchange unit has a plurality of Ports, and wherein a connectivity port is as the Port that externally is connected with this LAN, and remaining Port is connected separately with these a plurality of terminal installations respectively;
Linkage unit externally connects a network architecture in order to this LAN to be provided; And
First switch, its with a plurality of connectivity ports that this signal exchange unit is provided in as the Port connection that externally is connected with this LAN, this first switch also is connected with linkage unit, and this first switch optionally connects with a terminal installation that is not connected with the connectivity port of this signal exchange unit, wherein whether be connected with the Port that this LAN externally is connected, and be the LAN of inside or the network architecture of outside according to the corresponding data transfer path that switches the connectivity port that this conduct and this LAN externally be connected of detecting result with this terminal installation in order to detect this conduct.
2. the switch with extended function according to claim 1 is characterized in that, this network architecture is the LAN of Ethernet framework.
3. standby system with switch of extended function, it is applied in a plurality of terminal installations in the LAN, and a plurality of terminal installations in this LAN have main Port and standby connectivity port separately, and this standby system comprises:
First switch, it is the main switch of using, have signal exchange unit, linkage unit, first switch, second switch and the 3rd switch, this signal exchange unit has a plurality of Ports, wherein a connectivity port is as the Port that externally is connected with this LAN, and a Port wherein then is connected with second switch, and remaining Port is connected separately with the main connectivity port of these a plurality of terminal installations respectively; This linkage unit externally connects a network architecture in order to this LAN to be provided; And this first switch connects with the connectivity port with the master of a terminal installation that is not connected with the connectivity port of this signal exchange unit;
Second switch, it is standby switch, have signal exchange unit, linkage unit, first switch, second switch and the 3rd switch, the signal exchange unit of this second switch has a plurality of Ports, wherein a connectivity port is as the Port that externally is connected with this LAN, and a Port wherein then is connected with second switch of this second switch, and remaining Port is connected separately with the standby connectivity port of these a plurality of terminal installations respectively; This linkage unit externally connects a network architecture in order to this LAN to be provided; This first switch connects with the standby connectivity port of a terminal installation that is not connected with the connectivity port of local terminal signal exchange unit; It is characterized in that,
Second switch of this first switch connects with the main connectivity port of a terminal installation that is not connected with a plurality of connectivity ports that the local terminal signal exchange unit is provided, and should with the standby connectivity port connection of second switch of second switch with a terminal installation that is not connected with a plurality of connectivity ports that the local terminal signal exchange unit is provided; And
The 3rd switch of this first switch is connected with second switch of first switch of local terminal and local terminal, and the 3rd switch also is connected with the linkage unit of local terminal, wherein whether this first switch is connected with the connectivity port of terminal installation in order to detect this first switch and second switch, and is the LAN or the outside network architecture of inside according to the data transfer path of detecting result's corresponding switching local terminal first switch and local terminal second switch; And the 3rd switch of second switch is connected with first switch of local terminal and second switch of local terminal, and the 3rd switch also is connected with the linkage unit of local terminal, wherein whether this second switch is connected with the connectivity port of terminal installation in order to detect this first switch and second switch, and is the LAN or the outside network architecture of inside according to the data transfer path of detecting result's corresponding switching local terminal first switch and local terminal second switch.
4. standby system according to claim 3, it is characterized in that, the terminal installation that is connected with first switch and second switch of this first switch and this second switch has an alert signal line again, by this alert signal line so that one of them breaks down at this first switch and second switch, but the work that the switch of notice normal operation is taken over this switch that breaks down is to switch with switch work active and standby.
5. standby system according to claim 4, it is characterized in that the data transfer path that switches the terminal installation that is connected with second switch of this first switch and this second switch is that the signal that the alert signal line of the LAN of inside and the terminal installation that outside network architecture foundation is connected with first switch is transmitted is carried out switching.
6. standby system according to claim 5 is characterized in that, this network architecture is the LAN of Ethernet framework.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CNA2006101437995A CN101179399A (en) | 2006-11-06 | 2006-11-06 | Exchange set with extension function and standby system thereof |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CNA2006101437995A CN101179399A (en) | 2006-11-06 | 2006-11-06 | Exchange set with extension function and standby system thereof |
Publications (1)
Publication Number | Publication Date |
---|---|
CN101179399A true CN101179399A (en) | 2008-05-14 |
Family
ID=39405499
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CNA2006101437995A Pending CN101179399A (en) | 2006-11-06 | 2006-11-06 | Exchange set with extension function and standby system thereof |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN101179399A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101499910B (en) * | 2009-03-16 | 2010-10-27 | 福建星网锐捷网络有限公司 | Modulated switch and communication method thereof |
CN112187677A (en) * | 2019-07-04 | 2021-01-05 | 荣群电讯股份有限公司 | Network switch and operation method thereof |
-
2006
- 2006-11-06 CN CNA2006101437995A patent/CN101179399A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101499910B (en) * | 2009-03-16 | 2010-10-27 | 福建星网锐捷网络有限公司 | Modulated switch and communication method thereof |
CN112187677A (en) * | 2019-07-04 | 2021-01-05 | 荣群电讯股份有限公司 | Network switch and operation method thereof |
CN112187677B (en) * | 2019-07-04 | 2022-08-16 | 荣群电讯股份有限公司 | Network switch and operation method thereof |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US9559984B2 (en) | Communication system and network relay device | |
CN100384169C (en) | Master and slave frame cascade system in cut-in device | |
CN101123510B (en) | Method, switch and switching chip for port separation of switch | |
CN101848154B (en) | System based on advanced telecom computation architecture | |
CN1937782B (en) | Frame device and its message transmitting method | |
CN105721546A (en) | Multi-data integration service platform based on industrial Internet of Things (IoT) communication | |
CN108683618A (en) | Communication equipment and intelligent terminal | |
CN104219115B (en) | It is a kind of to enable the method and system of Ethernet ring agreement and Spanning-Tree Protocol isomery mixed networking | |
CN101360043B (en) | Communication apparatus reliably connected inside | |
CN101883117B (en) | Interface business focuses on method and system | |
CN100426743C (en) | Internal reliable interconnect communication device | |
CN100389569C (en) | Data communication apparatus | |
CN100353680C (en) | Device of implementing backup for communication equipment in multistage and method of rearranging main and standby devices | |
CN201766606U (en) | Network switching device based on physical layer state detection and fault screening strategy | |
CN205792687U (en) | A kind of intelligent exchange | |
CN1773959A (en) | Central router based on serial Rapid 10 bus | |
CN105530205B (en) | Microwave equipment convergence device and method | |
CN101009542A (en) | Extension device of data network node device port | |
CN101179399A (en) | Exchange set with extension function and standby system thereof | |
CN102123070A (en) | System for realizing master/slave frame cascade protection and load sharing | |
CN1964286B (en) | A master control device with double CPU | |
WO2009012683A1 (en) | Multi-frame trunking system and frame | |
KR20150130016A (en) | Ethernet based Backplane and Module for Programmable Logic Controller | |
CN108833306B (en) | VSM system message transmission device and method | |
CN114124852A (en) | Data switch based on industrial manufacturing |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
WD01 | Invention patent application deemed withdrawn after publication |