CN1225694C - Intelligent network-switching equipment having common same user output-input interface - Google Patents
Intelligent network-switching equipment having common same user output-input interface Download PDFInfo
- Publication number
- CN1225694C CN1225694C CN 02106112 CN02106112A CN1225694C CN 1225694 C CN1225694 C CN 1225694C CN 02106112 CN02106112 CN 02106112 CN 02106112 A CN02106112 A CN 02106112A CN 1225694 C CN1225694 C CN 1225694C
- Authority
- CN
- China
- Prior art keywords
- module
- input interface
- output
- user
- switching device
- 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.)
- Expired - Fee Related
Links
- 238000012545 processing Methods 0.000 claims description 41
- 238000012546 transfer Methods 0.000 claims description 9
- 238000012544 monitoring process Methods 0.000 description 9
- 238000013461 design Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 230000001276 controlling effect Effects 0.000 description 5
- 238000011161 development Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 210000000988 bone and bone Anatomy 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- NHDHVHZZCFYRSB-UHFFFAOYSA-N pyriproxyfen Chemical compound C=1C=CC=NC=1OC(C)COC(C=C1)=CC=C1OC1=CC=CC=C1 NHDHVHZZCFYRSB-UHFFFAOYSA-N 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
Images
Landscapes
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
The present invention relates to an intelligent network exchanger with a shared input-output interface of the same user, which comprises a primary module set and a plurality of secondary module sets, wherein a user input-output interface, a CPU, a control circuit and at least two switching elements are arranged on the primary module set; the CPU controls the switching-on action or the switching-off action of the first switching element and the second switching element, and the control circuit is connected with the user input-output interface by the first switching element; an independent CPU, a control circuit and at least one switching element are arranged in each of the secondary module sets; the CPU in each of the secondary module sets is respectively connected with the third switching element and the control circuit; the control circuit is connected to the second switching element through the third switching element and connected with the user input-output interface through the second switching element.
Description
Technical field
The present invention relates to a kind of network-switching equipment, refer to the intelligent network-switching equipment of the shared identical user's output/input interface of a kind of tool especially with a plurality of intelligent modules.
Background technology
In recent years, because network world is flourish, network-switching equipment miscellaneous constantly is developed, and be used in widely in its life and the working environment by all trades and professions, this development trend, not only quickened the speed and the efficient of information flow, and be that people bring great convenience in life and work.Yet, along with informationalized high development, the network user is also more and more higher to the demand of the network information service, it is convenient and quick not only to require, more requirement can provide conformability and diversified service, for satisfying described demand, intelligent network-switching equipment (Intelligent Network Switch) arises at the historic moment.
In the standard architecture (Standard bone) 8 of legacy network switch, consult shown in Figure 1, mainly be on an intelligent network-switching equipment stacker framework (Stack), a plurality of network-switching equipments 81 independently separately are installed, 82,83,84,85, described each network- switching equipment 81,82,83,84,85 are installed on respectively separately independently in the housing, has separately independently circuit, CPU (central processing unit) and network job system etc., described each network- switching equipment 81,82,83,84, be respectively equipped with user's output/input interface (as: RS-232 interface) 811 on 85,821,831,841,851, for the webmaster personnel network monitor device of on this output/input interface, pegging graft, described each network-switching equipment is carried out network monitoring manage (Network Monitoring ﹠amp; Management), default and debug (System Configuration ﹠amp; Debugging) and operation such as software upgrading, so in the network-switching equipment of aforementioned conventional, be stacked in a plurality of network-switching equipments 81 on this frame, 82,83,84,85, be actually separately independently system, can be respectively to coupled network of relation device, carrying out network exchange handles, therefore, if the webmaster personnel want by a network monitor device, described each network-switching equipment is detected, just must be in regular turn with user's output/input interface 811 of its circuit socket to described each network-switching equipment, 821,831,841, on 851, could finish required monitoring one by one and handle.
Yet, in the intelligent network-switching equipment 9 of new development, consult shown in Figure 2, because in its device architecture, mainly be with main module (Master) 91 and a plurality of from module (Slave Module) 92,93,94,95... be mounted in the housing, so in fact comprise a plurality of network exchange modules 91 in this intelligent network- switching equipment 9,92,93,94,95..., this main module 91 and described wherein from module 92,93,94,95... comprise a circuit board respectively, then be respectively equipped with a CPU (central processing unit) on described each circuit board, network control circuit and network of relation software, and be mounted on the same frame, form single internet exchange system, in this internet exchange system, described from module respectively by the handshaking port 922 on it, 932,942,952, be connected with the handshaking port 912 on this main module, described handshaking port is in order to switching signal or packet between the CPU (central processing unit) that makes principal and subordinate's module, so can be general network I/O port (being so-called In-Band), also can be passage (channel independently, be so-called Out-Band), make this main module 91 can be to described from module 92,93,94,95... control processing, and described all the other network I/O ports from module, then can with other network of relation device line, carry out network exchange and handle.
In described intelligent network-switching equipment 9, owing to be installed on the interior main module 91 of housing and a plurality of from module 92,93,94,95..., though on the line, exist the line relation each other, but circuit on described each circuit board and element are then still independent separately, so the design and the manufacturer of this intelligent network-switching equipment 9, for making the webmaster personnel can be to described each main module 91 and a plurality of from module 92,93,94,95... monitor, must on described each module, install user's output/input interface (as: RS-232 interface) 911 respectively, 921,931,941,951..., and make described user's output/input interface 911,921,931,941,951... expose to outside the housing of described intelligent network-switching equipment 9, make the webmaster personnel can be with a network monitor device, be plugged to described each user's output/input interface 911 in regular turn, 921,931,941,951... on, could be one by one to described each module 91,92,93,94,95... finishing required monitoring handles.
Under this situation, because outside the housing of described each intelligent network-switching equipment, convex with many user's output/input interfaces, so a certain module generation problem in this intelligent network-switching equipment, or webmaster personnel desire is carried out monitoring management to a certain module, during operations such as default debug and software upgrading, very easily to the pairing user's output/input interface of this module, the problem of obscuring in the identification takes place, in addition, the outer described numerous user's output/input interface that is convexly equipped with of the housing of described each intelligent network-switching equipment, also increase the package program and the cost of part on foot, so how to design a kind of intelligent network-switching equipment that makes the shared identical user's output/input interface of all-network exchange module tool, promptly become an important topic that needs to be resolved hurrily in the intelligent network-switching equipment design.
Summary of the invention
In view of this, for improving described user's output/input interface that aforementioned conventional intelligent network-switching equipment housing is convexly equipped with outward, many shortcomings of being derived, the special intelligent network-switching equipment that proposes the shared identical user's output/input interface of tool of the present invention.
A purpose of the present invention, it is the object that uses this user's output/input interface by the software decision, utilize hardware to produce control signal again, with conducting or the disconnection action of controlling switching device on described each module, make the module of a certain pending control or debug, obtain the right of using and controlling this user's output/input interface, make this supervising device monitor to this module, set or debug, so a certain module generation problem in this intelligent device, or webmaster personnel desire is carried out monitoring management to a certain module, during operations such as default debug and software upgrading, unlikely on the pairing user's output/input interface of described each module of identification, the problem of obscuring.
Another object of the present invention, be only to need installing one user's output/input interface on this main module, can make other from the mode of module by transfer use and control, this user's output/input interface of shared use, not only can significantly reduce this user's output/input interface on this intelligent device, more can effectively simplify the circuit of described each module, further reduce this intelligent Design of device and manufacturing cost.
For reaching above-mentioned purpose, comprise in the intelligent network-switching equipment of the present invention: a main module, this main module is provided with user's output/input interface, one CPU (central processing unit), one control circuit and first switching device and second switching device, this CPU (central processing unit) respectively with one first switching device, second switching device and this control circuit are connected, this CPU (central processing unit) is by this control circuit reception or transfer data packets or signal, and control the conducting of this first and second switching device or disconnect action, this control circuit then by this first switching device, is connected with this user's output/input interface; And it is a plurality of from module, describedly respectively in module, all be provided with separately an independently CPU (central processing unit), one control circuit and the 3rd switching device, described respectively described each CPU (central processing unit) in the module is connected with one the 3rd switching device and this control circuit respectively, make this CPU (central processing unit) by this control circuit reception or transfer data packets or signal, and control the conducting of the 3rd switching device or disconnect action, this control circuit then is connected to aforementioned second switching device by the 3rd switching device, and is connected with this user's output/input interface by this second switching device.
So, detect a supervising device of being pegged graft on this user's output/input interface when main module, desire is monitored, is set a certain module or removes and stagger the time, the CPU (central processing unit) of described each module can be by the conducting or the disconnection of the described switching device of control, and will be to the use and the control of this user's output/input interface, this a certain module is given in transfer, and receives the signal that is transmitted by this user's output/input interface.
Description of drawings
Fig. 1 is the schematic appearance of conventional wisdom type stack network-switching equipment;
Fig. 2 is the schematic appearance of conventional wisdom type network-switching equipment;
Fig. 3 is the schematic appearance of intelligent network-switching equipment of the present invention;
Fig. 4 is the circuit framework synoptic diagram of the intelligent network-switching equipment of a most preferred embodiment of the present invention in original state;
Fig. 5 is a treatment scheme synoptic diagram of the intelligent network-switching equipment of this most preferred embodiment of the present invention;
Fig. 6 is another treatment scheme synoptic diagram of the intelligent network-switching equipment of this most preferred embodiment of the present invention;
Fig. 7 is the circuit framework synoptic diagram of intelligent network-switching equipment when control is transferred of this most preferred embodiment of the present invention;
Fig. 8 is that the intelligent network-switching equipment of this most preferred embodiment of the present invention is at the circuit framework synoptic diagram of finishing when being passed to control from module;
Fig. 9 is the circuit framework synoptic diagram of the intelligent network-switching equipment of another most preferred embodiment of the present invention.
Embodiment
The present invention is the intelligent network-switching equipment of the shared identical user's output/input interface of a kind of tool, consult shown in Figure 3, this intelligent network-switching equipment 1 comprises a casing, be separately installed with a main module 2 and a plurality of in this casing from module 3,4,5, this main module 2 and described wherein from module 3,4, comprise a circuit board on 5 respectively, consult shown in Figure 4, then be arranged with a CPU (central processing unit) 20 on described each circuit board, 30,40,50, control circuit 21,31,41,51 and related software, described from module 3,4,5 respectively by the handshaking port 301 on it, 401,501, be connected with the I/O port 201 on this main module 2, make the CPU (central processing unit) 20 of this main module 2 can be to described from module 3,4,5 CPU (central processing unit) 30,40,50 carry out operation management, form single system, described all the other I/O ports from module, then can with other relevant apparatus line, handle to carry out message exchange.
In a most preferred embodiment of the present invention, this intelligent network-switching equipment 1 can be an intelligent network-switching equipment, and set control circuit 21,31,41,51 and related software on it can be network control circuit and network of relation software.Especially it should be noted that at this, this most preferred embodiment only is a specific embodiment of the present invention, design of the present invention is not limited thereto, anyly be familiar with this skill person, with the technology that the present invention advocated, carry out any can think easily and variation or modification, or it is applied on other intelligent device, all must be encompassed in the claim of this case.
In most preferred embodiment, only be provided with user's output/input interface (as the RS232 interface) 25 on this intelligent network-switching equipment 1, consult Fig. 3 again, shown in 4, this user's output/input interface 25 is installed on the circuit board of this main module 2, and described each module 2,3,4, described each CPU (central processing unit) 20 in 5,30,40,50 respectively with its on described each network control circuit 21,31,41,51 are connected, described each module 2,3,4, in 5 and be respectively equipped with one and switch element 22,32,42,52, described each network control circuit 21,31,41,51 can pass through described each switching device 22,32,42,52, be connected with this user's output/input interface 25, wherein on the circuit board of this main module 2, and being provided with another switching device 23, this another switching device 23 is located at described respectively from module 3,4,5 with circuit that this user's output/input interface 25 is connected between.
In this most preferred embodiment, set described each switching device 22,32,42,52 and this another switching device 23 on described each module 2,3,4,5 can be a relay.Yet this only is one embodiment of the invention, and every other has the switching effect, and can be applicable to this element, should all belong to the alleged switching device of the present invention.Switching device 22,23 on this main module 2 is subjected to CPU (central processing unit) 20 controls of this main module 2, to carry out the change action of conducting or disconnection, described respectively described under 32,42,52 of switching devices from the module 3,4,5 are subjected to respectively respectively from CPU (central processing unit) 30,40,50 controls of module 3,4,5, the change action that carries out conducting or disconnection.
So, detect a supervising device of being pegged graft on this user's output/input interface 25 when main module 2, desire is monitored a certain module, set or remove and stagger the time, the CPU (central processing unit) 20 of this main module 2 can be by its above switching device 22 of control, 23 the conducting or the change action of disconnection, and will use and control the right of this user's output/input interface 25, this a certain module is given in transfer, this a certain module can be by controlling the conducting or the disconnection of switching device on it, and the signal that reception is transmitted by this user's output/input interface 25, or back-signalling makes this supervising device directly monitor this a certain module to this user's output/input interface 25, set or debug.
In this most preferred embodiment, when webmaster personnel desire to some from module (as label 4 from module), monitor, set or remove and stagger the time, earlier with a network monitor device, be plugged on outer this user's output/input interface (as: RS232 interface) 25 of the protruding housing that is exposed to this intelligent network-switching equipment 1, and by this user's output/input interface 25, this main module 2 is assigned a control command, because when original state, the use of this user's output/input interface 25 and control, belong to this main module 2, so this switching device 22 on this main module 2 is conducting state, this another switching device 23 then is off-state, consult shown in Figure 4 again, each element on this intelligent network-switching equipment 1 will be according to the following step, and that is correlated with controls processing, please consults Fig. 5 and shown in Figure 6 simultaneously:
(601) CPU (central processing unit) 20 of this main module 2 is by this network control circuit 21, when receiving this control command, receive use and the control of a requirement, be passed to other order from module with this user's output/input interface 25 with judging whether, if not, promptly continue step (602); If promptly continue step (603);
(602) by 20 pairs of orders of CPU (central processing unit) of this main module 2, directly handle, and return step (601) from this network monitor device;
(603) CPU (central processing unit) 20 of this main module 2 will produce a switching signal, and be sent to this switching device 22, make it be switched into off-state;
(604) CPU (central processing unit) 20 of this main module 2 will produce another switching signal, and be sent to this another switching device 23, make it be switched into conducting state, so, describedly respectively promptly may be connected, and obtain use and control this user's output/input interface 25 with this user's output/input interface 25 from module 3,4,5; At this moment, the state of each element on this intelligent network-switching equipment 1 will be as shown in Figure 7;
(605) then, the CPU (central processing unit) 20 of this main module 2 will produce a signal, be sent to described respectively from module 3,4,5, inform the object of pending monitoring, setting or debug, at this moment, because should be that this network monitor device is desired to monitor from module 4, the object of setting or debug, switched signal so should will produce one from module 4, and be sent to this switching device 42 on it, make it be switched into conducting state, consult shown in Figure 8ly, and be connected, obtain use and control this user's output/input interface 25 with this user's output/input interface 25; As for, other switching device 32,52 from the module 3,5 then remains on off-state;
(606) CPU (central processing unit) 20 of this main module 2 will be judged this from module 4, whether in a preset time, send back-signalling, if promptly continue step (607); If not, promptly continue step (610);
(607) should will judge whether to receive use and the control of requirement from the CPU (central processing unit) 40 of module 4, transfer back the order of this main module 2, if not, promptly continue step (608) this user's output/input interface 25; If promptly continue step (609);
(608) should will handle the signal that receives by this network monitor device from the CPU (central processing unit) 40 of module 4, and return step (607);
(609) should will produce a back-signalling from the CPU (central processing unit) 40 of module 4, pass this main module 2 back;
(610) CPU (central processing unit) 20 of this main module 2 will produce a signal, be sent to this from module 4, require to produce one from module 4 and switch signal, be sent to this switching device 42 on it;
(611) this switching device 42 makes it be switched into off-state according to this switching signal, consults shown in Figure 4 again;
(612) CPU (central processing unit) 20 of this main module 2 will produce a switching signal, and be sent to this another switching device 23, make it be switched into off-state;
(613) CPU (central processing unit) 20 of this main module 2 will produce another switching signal, and be sent to this switching device 22, make it be switched into conducting state, so, this main module 2 promptly is connected with this user's output/input interface 25, and obtains use and control to this user's output/input interface 25 again.At this moment, the state of each element on this intelligent network-switching equipment 1 will be returned original state shown in Figure 4.
In another most preferred embodiment of the present invention, consult shown in Figure 9, for making this intelligent network-switching equipment at the research and development initial stage, can be with described respectively from module 3,4,5 are considered as independent device, research and develop, monitoring, processing such as setting or debug, also can be described respectively from module 3,4,5 network control circuit 31,41, install user's output/input interface 33 on 51 respectively additional, 43,53, only, described user's output/ input interface 33,43,53 described respectively from module 3,4,5 when being mounted in the housing of this intelligent network-switching equipment 1, also is installed in this housing.
According to the above, because this intelligent network-switching equipment passes through software, the object of this user's output/input interface is used in decision, utilize hardware to produce control signal again, with conducting or the disconnection action of controlling switching device on described each module, make the module of a certain pending control or debug, obtain the right of using and controlling this user's output/input interface, when a certain module being carried out operations such as monitoring management, default debug and software upgrading when webmaster personnel desire, unlikely on the pairing user's output/input interface of described each module of identification, obscure problem.In addition, owing to only need installing one user's output/input interface on the main module of this intelligent network-switching equipment, can make other from the mode of module by transfer use and control, this user's output/input interface of shared use, not only can significantly reduce this user's output/input interface on this intelligent network-switching equipment, more can effectively simplify the circuit of described each module, further reduce the design and the manufacturing cost of this intelligent network-switching equipment.
The above embodiment only is explanation technological thought of the present invention and characteristics, its purpose makes the personage who has the knack of this skill can understand content of the present invention and is implementing according to this, when not limiting claim of the present invention with it, promptly the equalization of doing according to disclosed spirit generally changes or modifies, and must be encompassed in the claim scope of the present invention.
Claims (6)
1, the intelligent network-switching equipment of the shared identical user's output/input interface of a kind of tool is characterized in that: comprise in this intelligent device:
One main module, this main module is provided with user's output/input interface, a CPU (central processing unit), a control circuit and first switching device and second switching device, this CPU (central processing unit) is connected with one first switching device, second switching device and this control circuit respectively, this CPU (central processing unit) is by this control circuit reception or transfer data packets or signal, and control the conducting of this first and second switching device or disconnect action, this control circuit then by this first switching device, is connected with this user's output/input interface;
A plurality of from module, describedly respectively in module, all be provided with separately an independently CPU (central processing unit), one control circuit and the 3rd switching device, described respectively described each CPU (central processing unit) in the module is connected with one the 3rd switching device and this control circuit respectively, make this CPU (central processing unit) by this control circuit reception or transfer data packets or signal, and control the conducting of the 3rd switching device or disconnect action, this control circuit then is connected to aforementioned second switching device by the 3rd switching device, and is connected with this user's output/input interface by this second switching device.
2, the intelligent network-switching equipment of the shared identical user's output/input interface of tool as claimed in claim 1, it is characterized in that: this main module and describedly from module, comprise a circuit board respectively, then be respectively equipped with this CPU (central processing unit) on described each circuit board, this control circuit, described from module can be respectively by the handshaking port on it, be connected with the I/O port on this main module, make the CPU (central processing unit) of this main module carry out operation management to described CPU (central processing unit) from module, form single system, described all the other I/O ports from module, then can with other relevant apparatus line, handle to carry out message exchange.
3, the intelligent network-switching equipment of the shared identical user's output/input interface of tool as claimed in claim 1 is characterized in that: set switching device on described each module can be a relay.
4, the intelligent network-switching equipment of the shared identical user's output/input interface of tool as claimed in claim 1 is characterized in that: this intelligent device also comprises a casing, is equiped with this main module and a plurality of from module in this casing.
5, the intelligent network-switching equipment of the shared identical user's output/input interface of tool as claimed in claim 4 is characterized in that: this user's output/input interface is protruding to be exposed to outside this casing.
6, the intelligent network-switching equipment of the shared identical user's output/input interface of tool as claimed in claim 4, it is characterized in that: describedly respectively from the control circuit of module, add user's output/input interface respectively, described user's output/input interface and describedly respectively all be loaded in this housing from module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02106112 CN1225694C (en) | 2002-04-03 | 2002-04-03 | Intelligent network-switching equipment having common same user output-input interface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02106112 CN1225694C (en) | 2002-04-03 | 2002-04-03 | Intelligent network-switching equipment having common same user output-input interface |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1448846A CN1448846A (en) | 2003-10-15 |
| CN1225694C true CN1225694C (en) | 2005-11-02 |
Family
ID=28680157
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02106112 Expired - Fee Related CN1225694C (en) | 2002-04-03 | 2002-04-03 | Intelligent network-switching equipment having common same user output-input interface |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1225694C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100354801C (en) * | 2004-12-29 | 2007-12-12 | 大同股份有限公司 | Bidirectional management process of sequence interface for electronic type computer switcher capable of remote management |
| US7533315B2 (en) * | 2006-03-06 | 2009-05-12 | Mediatek Inc. | Integrated circuit with scan-based debugging and debugging method thereof |
| CN103580672A (en) * | 2013-11-06 | 2014-02-12 | 航宇伟创科技(北京)有限公司 | Controllable input/output interface control circuit and use method thereof |
-
2002
- 2002-04-03 CN CN 02106112 patent/CN1225694C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1448846A (en) | 2003-10-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1288748B1 (en) | Controller and operating system | |
| CN102281254A (en) | Design system and method of server serial port | |
| CN101771292B (en) | Switching circuit based on priorities and multi-path power supply swtiching system containing same | |
| CN102918798A (en) | Cascaded power-over-ethernet system | |
| CN1225694C (en) | Intelligent network-switching equipment having common same user output-input interface | |
| US20050125527A1 (en) | Method of identifying and managing an electronic device | |
| CN1960276B (en) | Remote control system and method | |
| CN1753407A (en) | Communication adapter | |
| CN1567816A (en) | A remote power feeding equipment having remote control function | |
| CN110602821B (en) | POE power supply-based light control system, method and storage medium | |
| CN1941758A (en) | Modem and a method for controlling the same | |
| CN103901854A (en) | Hotel guest room control system with double systems coexisting | |
| CN1885674A (en) | Intelligent network low-voltage distribution and control system using bus technique | |
| CN101170780B (en) | Method for dual mode terminal to prevent from current backflow between two radio modules | |
| CN2932840Y (en) | A device for implementing connection between serial port equipment and Profibus-DP bus | |
| JP3913608B2 (en) | Intelligent type device that allows all intelligent type modules to share the same user input / output interface | |
| CN100504834C (en) | Method and device for controlling impact external-equipment interconnected bus interface board circuit | |
| CN1237433C (en) | Semiconductor integrated circuit and its interrupt request output method | |
| CN104702435A (en) | Method of realizing aps switching of network processor and network processor | |
| CN218217403U (en) | Communication protocol interface control system and electronic equipment | |
| CN2919703Y (en) | Communication adapter | |
| JP5514313B2 (en) | Multi-mode data card and calibration method thereof | |
| CN216623005U (en) | Embedded industrial controller based on GPIO | |
| CN211349081U (en) | PLC system power supply frequency conversion safety control cabinet | |
| CN105162731A (en) | LOSS signal-based energy-saving structure and energy-saving method for Ethernet switch |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20051102 |