CN106656773A - Communication system and method - Google Patents
Communication system and method Download PDFInfo
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- CN106656773A CN106656773A CN201611009840.XA CN201611009840A CN106656773A CN 106656773 A CN106656773 A CN 106656773A CN 201611009840 A CN201611009840 A CN 201611009840A CN 106656773 A CN106656773 A CN 106656773A
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- underlying device
- gateway device
- underlying
- information
- gateway
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/66—Arrangements for connecting between networks having differing types of switching systems, e.g. gateways
Abstract
The invention discloses a communication system and method. The system comprises ground-floor equipment, gateway equipment which is connected with the ground-floor equipment for acquiring information of the ground-floor equipment and sending the information of the ground-floor equipment to a host computer; and the host computer which is connected with the gateway equipment for receiving the information of the ground-floor equipment. According to the invention, the technical problems of slow communication speed and poor timeliness of a conventional communication system are solved.
Description
Technical field
The present invention relates to field of information transmission, in particular to a kind of communication system and method.
Background technology
The at present industrial collection to multiple 485 equipment in scene, be typically employed in host computer configure communication processor or
Person's serial server, is then gone by communication processor again to inquire the equipment of bottom 485 one by one in the way of poll.But this mode
Poor real, configurability are low, and in the case of a certain one malfunctions on a communication network, can cause communication system
Entirety or the paralysis of local, and and be difficult to judge its abort situation.
Slow for above-mentioned communication system communication speed, the problem of poor in timeliness not yet proposes at present effective solution.
The content of the invention
A kind of communication system and method are embodiments provided, it is slow at least to solve communication system communication speed, when
The technical problem of effect property difference.
A kind of one side according to embodiments of the present invention, there is provided communication system, including：Underlying device；Gateway device,
It is connected with the underlying device, for gathering the information of the underlying device；Host computer, is connected with the gateway device, is used for
The information of the underlying device is obtained from the gateway device.
Further, the gateway device includes multiple memory partitionings, each described memory partitioning and a bottom
Equipment has mapping relations.
Further, each described memory partitioning includes register, is set with the corresponding bottom by the register
It is standby to set up mapping relations.
Further, the gateway device also includes：Serial communication unit, is connected with the underlying device；Network interface communicates
Unit, is connected with the host computer.
Further, the serial communication unit is the information that the underlying device is obtained by industrial communication protocol.
Further, the gateway device also includes：Power supply, for providing working power for the gateway device.
Further, the underlying device is 485 equipment.
Another aspect according to embodiments of the present invention, additionally provides a kind of communication means, including：Gateway device gathers bottom
The information of equipment；Host computer obtains the information of the underlying device from the gateway device.
Further, the communication means, also includes：Configure to have with the underlying device in the gateway device and reflect
Penetrate the memory partitioning of relation.
Further, the memory partitioning bag that there are mapping relations with the underlying device is configured in the gateway device
Include：For each underlying device storage allocation subregion, wherein, each subregion includes register；Set up in each memory partitioning and deposit
Mapping relations between device address and corresponding underlying device, wherein, each described register sets for mapping corresponding bottom
Standby data content.
Further, the communication means also includes：When it is determined that the underlying device breaks down, by described upper
The content stored in the memory partitioning of the machine acquisition gateway device；Determine occur based on the content stored in the memory partitioning
The underlying device of failure.
In embodiments of the present invention, between underlying device and host computer, the gateway device in intermediate layer is set.Gateway device
It is connected with underlying device, gathers the information of underlying device, and the information of underlying device is sent into host computer.Host computer and net
Pass equipment connection, receives the information of the underlying device through gateway device transmission.Above-described embodiment, by underlying device with
The gateway device in intermediate layer is set between the machine of position, the information transfer between underlying device and host computer is allow by intermediate layer,
The information of underlying device is obtained by intermediate layer, and is sent to host computer, reduced the information between host computer and underlying device and pass mutual,
Just can be configured by gateway device from underlying device, making the configurability of communication system strengthens, be solved communication system communication
Speed is slow, the technical problem of poor in timeliness.
Description of the drawings
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the application, this
Bright schematic description and description does not constitute inappropriate limitation of the present invention for explaining the present invention.In the accompanying drawings：
Fig. 1 is a kind of schematic diagram of communication system according to embodiments of the present invention；
Fig. 2 is the schematic diagram of a kind of optional communication system network architecture according to embodiments of the present invention；
Fig. 3 is the schematic diagram of a kind of optional gateway device according to embodiments of the present invention；
Fig. 4 is a kind of flow chart of communication means according to embodiments of the present invention；
Fig. 5 is the control schematic diagram of a kind of optional gateway device according to embodiments of the present invention.
Specific embodiment
In order that those skilled in the art more fully understand the present invention program, below in conjunction with the embodiment of the present invention
Accompanying drawing, is clearly and completely described to the technical scheme in the embodiment of the present invention, it is clear that described embodiment is only
The embodiment of a part of the invention, rather than the embodiment of whole.Based on the embodiment in the present invention, ordinary skill people
The every other embodiment that member is obtained under the premise of creative work is not made, should all belong to the model of present invention protection
Enclose.
It should be noted that description and claims of this specification and the term " first " in above-mentioned accompanying drawing, "
Two " it is etc. the object for distinguishing similar, without for describing specific order or precedence.It should be appreciated that so using
Data can exchange in the appropriate case, so as to embodiments of the invention described herein can with except illustrating here or
Order beyond those of description is implemented.Additionally, term " comprising " and " having " and their any deformation, it is intended that cover
Lid is non-exclusive to be included, and for example, process, method, system, product or the equipment for containing series of steps or unit is not necessarily limited to
Those steps clearly listed or unit, but may include clearly not list or for these processes, method, product
Or intrinsic other steps of equipment or unit.
Fig. 1 is a kind of communication system schematic diagram according to embodiments of the present invention, as shown in figure 1, the system includes：Bottom sets
Standby 11；Gateway device 13, is connected with underlying device, for gathering the information of underlying device, and the information of underlying device is sent
To host computer；Host computer 15, is connected with gateway device, for the information for obtaining underlying device from gateway device.
By above-described embodiment, between underlying device and host computer, the gateway device in intermediate layer is set.Gateway device with
Underlying device connects, and gathers the information of underlying device, and host computer obtains the information of underlying device from gateway device.Above-mentioned enforcement
Example, by arranging gateway device between underlying device and host computer, host computer can obtain underlying device from gateway device
Information, and without using communication manager poll obtain underlying device information, improve the ageing of information transfer, it is upper
The information of underlying device is obtained in the information that machine is stored from gateway device, is allow host computer in real time, easily to obtain bottom and is set
Standby information, accelerates information transfer efficiency, it is ensured that information transfer it is ageing, it is slow to solve communication system communication speed, timeliness
Property difference technical problem.
Alternatively, the equipment that underlying device is applied by industry spot, in industrial processes, the underlying device can be with
For gathering information, or carry out production work.
Alternatively, the host computer is the management level in industrial processes, for by the information of underlying device, the bottom of to
Layer equipment is monitored；Control instruction is can be sent out, to control the work of underlying device.
Alternatively, gateway device is used to do information exchange between host computer and underlying device, plays bridge beam action.Pass through
Gateway device gathers the information of underlying device, and host computer obtains the information from gateway device, for gateway device gathers information
With the species and type of transmission information, can be configured in host computer, allow what gateway device was arranged according to host computer
Type and species are communicated with host computer.
According to the above embodiment of the present invention, gateway device includes multiple memory partitionings, each memory partitioning and a bottom
Equipment has mapping relations.
Alternatively, multiple memory partitionings are configured in gateway device, each memory partitioning has with corresponding underlying device
There is mapping relations (e.g., one-to-one relation, that is, each underlying device has a letter dedicated for storing the equipment
The memory partitioning of breath), the independent memory partitioning for having each underlying device in gateway device is made, process in each memory partitioning
With the information of the underlying device that the memory partitioning has mapping relations.In this embodiment, according to memory partitioning and underlying device
Corresponding relation so that gateway device and underlying device have corresponding relation in message transmitting procedure, it is ensured that gateway device with
The accuracy and real-time of the information transfer of underlying device.
Wherein, register can include eight bit register, 16 bit registers, 32 bit registers and 64 bit registers, below with
64 bit registers make corresponding explanation to the present invention.In addition, each memory partitioning can be register, can be according to different
Chip confirming digit, the digit of register it is not always necessary that use 64 bit registers, in this regard, the present invention is not specifically limited.
According to the above embodiment of the present invention, each memory partitioning include 64 bit registers, by register with it is corresponding
Underlying device set up mapping relations.
In the above-described embodiments, the mapping relations of the register set up in memory partitioning and corresponding underlying device, it is upper
Machine is realized and the bottom when obtaining information by directly reading data from the memory partitioning with underlying device with mapping relations
The information exchange of layer equipment, improves the speed of data acquisition, it is ensured that the real-time of information transfer；May be used also using the mapping relations
So that gateway device obtains the information of underlying device with most fast approach, gateway device can be rapidly carried out with underlying device
Information transfer, it is ensured that the real-time of information transfer.
According to the above embodiment of the present invention, gateway device also includes：Serial communication unit, is connected with underlying device；Network interface
Communication unit, is connected with host computer.
Alternatively, serial communication unit, is that a kind of parallel data character that can be by reception from CPU be converted to continuously
Serial data stream is gone out, while the device that converting serial data streams are that parallel data character supplies CPU can will be received, it is complete
Unit into this function is serial communication unit.In this embodiment, gateway device adopts serial communication unit, by bottom
Come in the information gathering of equipment, then using network interface communication unit, host computer is transmitted by Ethernet.In underlying device and host computer
Communication process in, by gateway device, the data of the serial communication form of underlying device are converted to can be generalized machine-readable taking
Network interface communication format data, and without the need for carry out the conversion of data form on underlying device and host computer, be easy to bottom to set
The standby communications between host computer, make transmission more smooth, it is ensured that the real-time of its communication.
In the above-described embodiments, the conversion by gateway device to information type, allows host computer more easily to receive
The information of underlying device, so as to accelerate information transfer efficiency, it is ensured that information transfer it is ageing.
According to the above embodiment of the present invention, serial communication unit obtains the information of underlying device by industrial communication protocol.
Underlying device is used mostly industrial communication protocol and carries out information transfer, and serial communication unit is set by industrial communication protocol to bottom
Standby information carries out acquisition operation, acquisition of the serial communication unit to underlying device information can be made convenient, fast.
According to the above embodiment of the present invention, gateway device also includes：Power supply, for providing working power for gateway device.
Gateway device includes Switching Power Supply, can be by the conventional 24V Power converts of industry spot into corresponding reliable and stable voltage, as gateway
The operating voltage of equipment, in the course of the work, the power supply without the need for receiving underlying device or host computer, in communication process without
Including power information is supplied, so as to improve communication process in information transfer speed, it is ensured that the real-time of communication.
According to the above embodiment of the present invention, underlying device is 485 equipment.485 equipment are using the communication of RS-485 interfaces
Equipment, using RS-485 interfaces, the communication that can make equipment has a good noise immunity, long transmission range and multistation
The advantages of ability.Underlying device adopts 485 equipment, it is ensured that the accuracy of underlying device information transmission.
Fig. 2 is the schematic diagram of a kind of optional communication system network architecture according to embodiments of the present invention, as shown in Fig. 2
The system includes：Tension management layer 21, intermediate layer harvester layer 23 and infrastructure devices layer 25.
According to the above embodiment of the present invention, the network architecture of communication system is mainly used in industry spot, industry spot
The network architectureization points three layers, tension management layer, intermediate layer harvester layer and infrastructure devices layer can be divided into.Wherein, upper strata pipe
Reason layer can be host computer, and the host computer can be computer or mobile terminal, and the computer or mobile terminal have can be with
The screen of display information, host computer is got after the information of underlying device, and the information can be illustrated in the page of screen display
In face (such as webpage), infrastructure devices layer can be the equipment of bottom 485, and the gateway that intermediate layer acquisition layer is in above-described embodiment sets
It is standby.Gateway device is mainly used in industry spot, and the gateway device can be mapped to the storage content in the equipment of bottom 485
In the appropriate address of gateway device, can realize by the equipment of bottom 485 by industrial communication protocol (Modbus rtu protocols)
The information data collection of the equipment of bottom 485 comes up, and is supplied to host computer or webpage intuitively to show, plays bridge
Effect.It connects bottom and management level, realizes that management level are monitored to the Real-time Collection of underlying device.
Fig. 3 is the schematic diagram of a kind of optional gateway device according to embodiments of the present invention, as shown in figure 3, including:
MCU31, power supply function module 33, network interface communication module 35 and serial communication function module 37.
In this embodiment, MCU is micro-control unit one chip microcomputer, i.e. single-chip microcomputer.Communication gate equipment passes through
Power module provides working power for the normal operation of equipment, and serves as CPU, control serial communication modular and net using main MCU
Port communications module.Serial communication modular, is responsible for the data of the collection equipment of bottom 485, and according to industrial communication protocol (Modbus
Rtu protocol) enter row data communication.Network interface communication module, the underlying device information that serial ports is received is assisted by ethernet communication
During view (Modbus Transmission Control Protocol) uploads to host computer.Wherein network interface communication module is connecing of transmitting upwards of whole data acquisition
Mouthful, the informationization collection to shop equipment is capable of achieving by the interface, facilitate monitor in real time of the management level to scene.
In the above embodiment of the present invention, gateway device needs to be configured before work, and its configuration process can pass through
Browser or other special-purpose softwares enter function Access Gateway configuration interface.Carry out configuring the communication of RS-485 interfaces and the equipment of bottom 485
Parameter, the messaging parameter includes：Baud rate, check bit, data bit, stop position.The equipment of bottom 485 of collection needed for obtaining again
Address.Further, the number of institute's underlying device is counted.Alternatively, the equipment number of collection needed for system programming count is selected,
If each equipment one data of correspondence, counts the number of the data that need to be gathered.Alternatively, gateway device may be selected configuration 32
Individual underlying device.Further, it is that each underlying device configures a mapping address.Alternatively, configure each selected by gateway
The mapping address of the equipment of individual bottom 485, each one device address of mapping address correspondence.32 can be distributed inside gateway device
Memory partitioning, each subregion is 64 bit registers, and each register is used to map the data content of corresponding underlying device,
Alternatively, mapping relations are built according to the equipment of actual connection and the data register address of needs collection.
In the above embodiment of the present invention, according to the parameter for setting, led to each slave station equipment in the way of poll
Letter, because the gateway device has storage mapping function, each slave station needs the data register address of collection right
Answer a memory address of gateway.Simultaneously host computer only needs the parameter for reading gateway correspondence memory region to be capable of achieving and bottom
The interaction of 485 equipment.This gateway is not only easy to management compared with other gateway devices but also reliability stability is high.Solve in the past
Real-time communication is poor, configurability is low and when on network a certain one malfunctions can cause system entirety or local paralysis and
It is difficult to the drawbacks of judging its abort situation.When gateway device is broken down, only need to be in upper computer software or IE browser
In directly observe the Parameters variation in associated internal memory region, carry out on-line testing, you can judge bottom which equipment fault, subtract significantly
Glitch investigates workload, reduces maintenance cost, saves the time.
In another alternatively embodiment, the equipment of bottom 485 is connected into gateway device, by IE browser or on
The other software installed in the machine of position is configured to gateway device, after the configuration has been completed, it is possible to use the gateway device is realized
Collection to the information of the equipment of bottom 485, and after host computer reads corresponding information from gateway device, this is read
The information change of underlying device (such as slave station) be illustrated on screen, the information change can include the working condition of underlying device
Change.
Wherein, underlying device storage can store mass data, and these data can all be stored in the corresponding register of equipment
In, and gateway and the data of underlying device mapping are host computer, need the data for gathering underlying device correspondence register, by reflecting
Penetrating can make the data of some registers in gateway identical with the data of correspondence register in collection underlying device, the bottom of collection
The data and not all storage content of equipment.
According to embodiments of the present invention, there is provided a kind of embodiment of communication means, it should be noted that in the flow process of accompanying drawing
The step of illustrating can perform in the such as computer system of one group of computer executable instructions, and, although in flow process
Show logical order in figure, but in some cases, can be shown or described to perform different from order herein
Step.
Fig. 4 is a kind of flow chart of communication means according to embodiments of the present invention, as shown in figure 4, the method is including as follows
Step：
Step S402, gateway device gathers the information of underlying device.
Step S404, host computer obtains the information of the underlying device from the gateway device.
By above-mentioned steps, between underlying device and host computer, the gateway device in intermediate layer is set.Gateway device and bottom
Layer equipment connection, gathers the information of underlying device, and the information of underlying device is sent into host computer.Host computer sets with gateway
Standby connection, receives the information of the underlying device through gateway device transmission.Above-described embodiment, by underlying device and host computer
Between the gateway device in intermediate layer is set, information transfer between underlying device and host computer is allow by intermediate layer, by
Interbed is obtained to underlying device information, and is sent to host computer, is reduced the information between host computer and underlying device and is passed mutual,
Just can be configured by gateway device from underlying device, making the configurability of communication system strengthens, be solved communication system communication
Speed is slow, the technical problem of poor in timeliness.
According to the above embodiment of the present invention, the communication means can also include：Configuration and underlying device in gateway device
Memory partitioning with mapping relations.
According to the above embodiment of the present invention, configuration and underlying device have the memory partitioning of mapping relations in gateway device
Including：For each underlying device storage allocation subregion, wherein, each subregion includes 64 bit registers；Set up each internal memory
Mapping relations in subregion between register address and corresponding underlying device, wherein, each register is used to map corresponding
The data content of underlying device.
According to the above embodiment of the present invention, communication means also includes：When it is determined that underlying device breaks down, by upper
The content stored in the memory partitioning of machine acquisition gateway device；The bottom broken down is determined based on the content stored in memory partitioning
Layer equipment.
Fig. 5 is the control schematic diagram of a kind of optional gateway device according to embodiments of the present invention, as shown in figure 5, including:
Step S502, opens gateway device.
Step S504, enters function Access Gateway and arranges interface by browser or other special-purpose softwares.The configuration page can be
Client or Webpage.
Step S506, configures the messaging parameter of RS-485 interfaces and the equipment of bottom 485.
Wherein, the messaging parameter includes：Baud rate, check bit, data bit and stop position.
Step S508, the address of the equipment of bottom 485 of collection needed for obtaining.
Step S510, counts the number of institute's underlying device.
Alternatively, the equipment number of collection needed for system programming count is selected, if each equipment one data of correspondence,
The number of the data that statistics need to be gathered.
Alternatively, gateway device may be selected 32 underlying devices of configuration.
Step S512, is that each underlying device configures a mapping address.
Alternatively, the mapping address of each equipment of bottom 485 selected by gateway is configured, each mapping address correspondence one
Device address.32 memory partitionings can be distributed inside gateway device, each subregion is 64 bit registers, and each register is used
In the data content for mapping corresponding underlying device, alternatively, according to the equipment and the data register of needs collection of actual connection
Mapping relations are built in device address.
Step S514, clicks on after all parameter configurations are good and submits to.
The mapping of underlying device and memory partitioning can be configured by above-mentioned steps, rear gateway device is restarted according to setting
Parameter, is communicated in the way of poll with each slave station equipment, because the gateway device has storage mapping function, often
One memory address of data register address all corresponding gateways of one slave station needs collection.Simultaneously host computer only needs to read net
The parameter for closing correspondence memory region is capable of achieving to be interacted with the equipment of bottom 485.This gateway is not only compared with other gateway devices just
In management, and reliability, stability are high, solve that conventional real-time communication is poor, configurability is low and when a certain section on network
Point breaks down can be caused the paralysis of system entirety or local and be difficult to the drawbacks of judging its abort situation.For gateway device goes out
During existing failure, the Parameters variation in associated internal memory region only need to be directly observed in upper computer software or IE browser, be carried out
Line is tested, you can judgement bottom is which equipment fault, greatly reduces malfunction elimination workload, reduces maintenance cost, saves the time.
The embodiments of the present invention are for illustration only, do not represent the quality of embodiment.
In the above embodiment of the present invention, the description to each embodiment all emphasizes particularly on different fields, and does not have in certain embodiment
The part of detailed description, may refer to the associated description of other embodiment.
In several embodiments provided herein, it should be understood that disclosed technology contents, can pass through other
Mode is realized.Wherein, device embodiment described above is only schematic, such as the division of described unit, Ke Yiwei
A kind of division of logic function, can there is an other dividing mode when actually realizing, such as multiple units or component can with reference to or
Person is desirably integrated into another system, or some features can be ignored, or does not perform.Another, shown or discussed is mutual
Between coupling or direct-coupling or communication connection can be INDIRECT COUPLING or communication link by some interfaces, unit or module
Connect, can be electrical or other forms.
The unit as separating component explanation can be or may not be it is physically separate, it is aobvious as unit
The part for showing can be or may not be physical location, you can with positioned at a place, or can also be distributed to multiple
On unit.Some or all of unit therein can according to the actual needs be selected to realize the purpose of this embodiment scheme.
In addition, each functional unit in each embodiment of the invention can be integrated in a processing unit, it is also possible to
It is that unit is individually physically present, it is also possible to which two or more units are integrated in a unit.Above-mentioned integrated list
Unit both can be realized in the form of hardware, it would however also be possible to employ the form of SFU software functional unit is realized.
If the integrated unit is realized using in the form of SFU software functional unit and as independent production marketing or used
When, during a computer read/write memory medium can be stored in.Based on such understanding, technical scheme is substantially
The part for contributing to prior art in other words or all or part of the technical scheme can be in the form of software products
Embody, the computer software product is stored in a storage medium, including some instructions are used so that a computer
Equipment (can be personal computer, server or network equipment etc.) perform the whole of each embodiment methods described of the invention or
Part steps.And aforesaid storage medium includes：USB flash disk, read-only storage (ROM, Read-Only Memory), arbitrary access are deposited
Reservoir (RAM, Random Access Memory), portable hard drive, magnetic disc or CD etc. are various can be with store program codes
Medium.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (11)
1. a kind of communication system, it is characterised in that include：
Underlying device；
Gateway device, is connected with the underlying device, for gathering the information of the underlying device；
Host computer, is connected with the gateway device, for obtaining the information of the underlying device from the gateway device.
2. system according to claim 1, it is characterised in that the gateway device includes multiple memory partitionings, each institute
State memory partitioning and a underlying device has mapping relations.
3. system according to claim 2, it is characterised in that each described memory partitioning includes register, by described
Register sets up mapping relations with the corresponding underlying device.
4. system according to claim 2, it is characterised in that the gateway device also includes：
Serial communication unit, is connected with the underlying device；
Network interface communication unit, is connected with the host computer.
5. system according to claim 4, it is characterised in that the serial communication unit is to be obtained by industrial communication protocol
Take the information of the underlying device.
6. system according to claim 2, it is characterised in that the gateway device also includes：
Power supply, for providing working power for the gateway device.
7. system according to claim 1, it is characterised in that the underlying device is 485 equipment.
8. a kind of communication means, it is characterised in that include：
Gateway device gathers the information of underlying device；
Host computer obtains the information of the underlying device from the gateway device.
9. method according to claim 8, it is characterised in that also include：
The memory partitioning that there are mapping relations with the underlying device is configured in the gateway device.
10. method according to claim 9, it is characterised in that configure in the gateway device and the underlying device
Memory partitioning with mapping relations includes：
For each underlying device storage allocation subregion, wherein, each subregion includes register；
The mapping relations between register address and corresponding underlying device in each memory partitioning are set up, wherein, described in each
Register is used to map the data content of corresponding underlying device.
11. methods according to claim 9, it is characterised in that also include：
When it is determined that the underlying device breaks down, deposit in the memory partitioning that the gateway device is obtained by the host computer
The content of storage；
The underlying device for breaking down is determined based on the content stored in the memory partitioning.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611009840.XA CN106656773A (en) | 2016-11-16 | 2016-11-16 | Communication system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611009840.XA CN106656773A (en) | 2016-11-16 | 2016-11-16 | Communication system and method |
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| CN106656773A true CN106656773A (en) | 2017-05-10 |
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| CN201611009840.XA Pending CN106656773A (en) | 2016-11-16 | 2016-11-16 | Communication system and method |
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| CN110177030A (en) * | 2019-06-05 | 2019-08-27 | 国家工业信息安全发展研究中心 | Industrial gateway controls test method |
| CN111159092A (en) * | 2019-12-31 | 2020-05-15 | 北京力控华康科技有限公司 | Serial port communication system, method and device and electronic equipment |
| CN114697379A (en) * | 2020-12-25 | 2022-07-01 | 深圳Tcl数字技术有限公司 | Communication mode switching method, device, terminal equipment and storage medium |
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Application publication date: 20170510 |