CN109088882A - A kind of method, apparatus, network controller and the system of data transmission - Google Patents
A kind of method, apparatus, network controller and the system of data transmission Download PDFInfo
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- CN109088882A CN109088882A CN201811103420.7A CN201811103420A CN109088882A CN 109088882 A CN109088882 A CN 109088882A CN 201811103420 A CN201811103420 A CN 201811103420A CN 109088882 A CN109088882 A CN 109088882A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/08—Protocols for interworking; Protocol conversion
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/18—Multiprotocol handlers, e.g. single devices capable of handling multiple protocols
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/22—Parsing or analysis of headers
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Abstract
The invention discloses a kind of data transmission methods, device, network controller and system, the described method includes: whether detect in the various communication interfaces has communication interface to receive data packet, when thering is communication interface to receive data packet in detecting the various communication interfaces, received data packet is parsed, to obtain the data format and data content of the data packet, according to transformational relation preset between different data format and standard data format, it is the standard data format by the Data Format Transform of the data packet, the data content is packaged according to the standard data format, the data packet obtained after encapsulation is sent to the host computer by the standard communication interface.Pass through the method, a variety of different communications protocol are converted into a kind of preset standard agreement, the equipment for realizing different communications protocol need to only be realized by a network controller and host computer to be communicated, and greatly reduces communication cost, and facilitate later maintenance.
Description
Technical field
The present invention relates to data processing field, more particularly to the method, apparatus of data transmission a kind of, network controller with
And system.
Background technique
With the extensive use of various electronic equipments and electromechanical equipment, the type of electronic equipment and electromechanical equipment is also increasingly
It is more, and the manufacturer of these equipment is produced not necessarily all using same communications protocol come production equipment, so corresponding to various set
Standby communications protocol can also have nothing in common with each other.
In the related technology, if two or more is communicated or needed using the equipment of different communications protocol
If being communicated with host computer, a gateway must be just set up therebetween, such as two kinds use different communications protocol
Equipment need when being communicated with host computer just to may be implemented to communicate in host computer and two gateways of erection between the two respectively,
So user usually buys the identical equipment of communication protocol when purchase is using equipment at present, in order to using a gateway with
Host computer realizes communication.But it is smaller to result in user that face may be selected in this way, and in practice, in order to complete different function
Can, user needs to buy different equipment, be difficult so that the communications protocol of these equipment be it is same, so user just need for
Gateway is respectively configured to realize communication in these equipment, causes communication cost very high.And the maintenance of gateway can only be manufactured by gateway
Quotient is responsible for, and causes later maintenance very inconvenient.
Summary of the invention
In view of the above problems, the present invention provides method, apparatus, network controller and the system of a kind of data transmission, solution
The prior art of having determined needs to set up many gateways because the different equipment of communications protocol is communicated come the problem of realization.
The present invention is achieved through the following technical solutions:
A kind of data transmission method, is applied to network controller, and the network controller has various communication interfaces and mark
Quasi- communication interface, the network controller are connected by a kind of equipment of communication interface communications protocol corresponding to support, the net
Network controller also passes through the standard communication interface and connect with host computer, this method comprises:
Whether detect in the various communication interfaces has communication interface to receive data packet；
When thering is communication interface to receive data packet in detecting the various communication interfaces, to received data packet
It is parsed, to obtain the data format and data content of the data packet；
According to transformational relation preset between different data format and standard data format, by the data format of the data packet
Be converted to the standard data format；
The data content is packaged according to the standard data format；
The data packet obtained after encapsulation is sent to the host computer by the standard communication interface.
Further, the method also includes:
Detect whether the standard communication interface receives the data packet that the host computer is sent, which includes data
Content and destination address；
When detecting that the standard communication interface receives the data packet that the host computer is sent, to received number
It is parsed according to packet, to obtain the data format and data content of the data packet；
According to the destination address in the data packet, the equipment that the host computer needs to operate is determined；
According to transformational relation preset between different data format and standard data format, by the data format of the data packet
Be converted to the data format for the equipment that the host computer needs to operate；
The data format of equipment for needing to operate according to the host computer to the data content and the destination address into
Row encapsulation；
The data packet obtained after encapsulation is sent to the equipment that the host computer needs to operate.
Further, the various communication interfaces include: RJ45 interface, RS232 interface, RS485 interface.
Further, the standard data format is the data format that user configures on the network controller.
A kind of data transmission device, is applied to network controller, and the network controller has various communication interfaces and mark
Quasi- communication interface, the network controller are connected by a kind of equipment of communication interface communications protocol corresponding to support, the net
Network controller also passes through the standard communication interface and connect with host computer, and described device includes:
First detection module, the first parsing module, the first conversion module, the first package module and the first transmission module；
Whether the first detection module has communication interface to receive data packet for detecting in the various communication interfaces,
And data packet is transferred to first parsing module；
First parsing module is used for when receiving data packet, is parsed to received data packet, with
First turn is given to the data format and data content of the data packet, and by the data format of the data packet and data content transmission
Change the mold block；
First conversion module is used for according to transformational relation preset between different data format and standard data format,
It is the standard data format by the Data Format Transform of the data packet, and by the data format and data of the normal data packet
Content transmission gives the first package module；
First package module will be sealed for being packaged according to the standard data format to the data content
The normal data packet installed is transferred to first transmission module；
First transmission module is used to send the normal data packet obtained after encapsulation by the standard communication interface
To the host computer.
Further, described device further include:
Second detection module, the second parsing module, the second conversion module, the second package module and the second transmission module；
Second detection module is used to detect whether the standard communication interface to receive the number that the host computer is sent
According to packet, which includes data content and destination address, and the normal data packet is transferred to second parsing module；
Second parsing module is used for when receiving the data packet that second detection module is sent, to received
Data packet parsed, to obtain the data format and data content of the data packet, second parsing module is according to the number
According to the destination address in packet, the equipment that the host computer needs to operate is determined, and by the data format and data of the data packet
Content transmission gives second conversion module；
Second conversion module is used for according to transformational relation preset between different data format and standard data format,
It is the data format for the equipment that the host computer needs to operate by the Data Format Transform of the data packet, and the host computer is needed
The data format and data content transmission for the equipment to be operated give second package module；
Second package module is used to need the data format of the equipment operated to the data according to the host computer
Content and the destination address are packaged, and need the data packet of the equipment operated to be transferred to the packaged host computer
Second transmission module；
Second transmission module, which is used to the data packet obtained after encapsulation being sent to the host computer, needs what is operated to set
It is standby.
A kind of network controller, the network controller include processor, and have various communication interfaces and standard traffic
Interface, equipment connection of each communication interface for communications protocol corresponding to supports in the various communication interfaces are described
For connecting with host computer, the processor is used for standard communication interface:
Whether detect in the various communication interfaces has communication interface to receive data packet；
When thering is communication interface to receive data packet in detecting the various communication interfaces, to received data packet
It is parsed, to obtain the data format and data content of the data packet；
According to transformational relation preset between different data format and standard data format, by the data format of the data packet
Be converted to the standard data format；
The data content is packaged according to the standard data format；
The data packet obtained after encapsulation is sent to the host computer by the standard communication interface.
Further, the processor is also used to:
Detect whether the standard communication interface receives the data packet that the host computer is sent, which includes data
Content and destination address；
When detecting that the standard communication interface receives the data packet that the host computer is sent, to received number
It is parsed according to packet, to obtain the data format and data content of the data packet；
According to the destination address in the data packet, the equipment that the host computer needs to operate is determined；
According to transformational relation preset between different data format and standard data format, by the data format of the data packet
Be converted to the data format for the equipment that the host computer needs to operate；
The data format of equipment for needing to operate according to the host computer to the data content and the destination address into
Row encapsulation；
The data packet obtained after encapsulation is sent to the equipment that the host computer needs to operate.
Further, the various communication interfaces of the network controller include: that RJ45 interface, RS232 interface, RS485 connect
Mouthful.
A kind of data transmission system, the system comprises host computer, network controller and the different communications associations of multiple supports
The equipment of view, the network controller have various communication interfaces and standard communication interface, and the network controller passes through one kind
The equipment of communication interface communications protocol corresponding to support connects, the network controller by the standard communication interface with it is described
Host computer connection, the network controller are used to execute any of the above-described data transmission method.
Compared with the method that the existing equipment for realizing different communications protocol is communicated, a kind of data biography provided by the invention
A variety of different communications protocol are converted by defeated method, apparatus, network controller and system by a network controller
A kind of preset standard agreement, the equipment for realizing different communications protocol need to only be realized by a network controller and host computer
Communication, greatly reduces communication cost, and facilitate later maintenance.
Detailed description of the invention
By reading the following detailed description of the preferred embodiment, various other advantages and benefits are common for this field
Technical staff will become clear.The drawings are only for the purpose of illustrating a preferred embodiment, and is not considered as to the present invention
Limitation.And throughout the drawings, the same reference numbers will be used to refer to the same parts.In the accompanying drawings:
Fig. 1 is the flow chart of data transmission method of the present invention；
Fig. 2 is another flow chart of data transmission method of the present invention；
Fig. 3 is the schematic diagram of data transmission device of the present invention；
Fig. 4 is another schematic diagram of data transmission device of the present invention；
Fig. 5 is the schematic diagram of inventive network controller；
Fig. 6 is the schematic diagram of data transmission system of the present invention.
Specific embodiment
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing and specific real
Applying mode, the present invention is described in further detail.It should be appreciated that specific embodiment described herein is only to explain this
Invention, only a part of the embodiment of the present invention is not intended to limit the present invention instead of all the embodiments.
As shown in Figure 1, the flow chart 1 of data transmission method of the present invention, this method is applied to network controller, the network control
There are many communication interface and standard communication interfaces for utensil processed, are all integrated on network controller, wherein each communication interface
Can connect an equipment, the equipment of different communications protocol need with the connection of corresponding communication interface, standard communication interface with it is upper
Position machine connection, this method can specifically include following steps:
Step 101: whether thering is communication interface to receive data packet in detection various communication interfaces.
It when the equipment of different communications protocol is communicated, is completed by corresponding communication interface, if communication connects
Mouth does not correspond to, then communication interface can not receive data packet.
Step 102: when thering is communication interface to receive data packet in detecting various communication interfaces, to received number
It is parsed according to packet, to obtain the data format and data content of the data packet.
Include data content and data format in the data packet received, wherein includes address, school in data format
Test, specific character string etc., may be used to determine be which kind of communications protocol equipment data packet.
Step 103: according to transformational relation preset between different data format and standard data format, by the data packet
Data Format Transform is standard data format.
The different data format of preset in advance and the transformational relation of standard data format are integrated in network controller, wherein
Different data formats can all be done according to existing all data formats into the transformational relation, and certain standard data format can
To be a kind of self-designed data format of user, it is also possible to user and uses one of existing data format as standard
Data format.
Step 104: data content being packaged according to standard data format.
By different Data Format Transforms be setting standard data format after, by standard data format and data content weight
Newly it is encapsulated into the data packet of standard.
Step 105: the data packet obtained after encapsulation is sent to host computer by standard communication interface.
Normal data packet after encapsulation is transferred to host computer by standard communication interface, and host computer only need to read data i.e.
It can.
Optionally, referring to Fig. 2, another flow chart of data transmission method of the present invention, specifically further includes following steps:
Step 201: whether examination criteria communication interface receives the data packet of host computer transmission, which includes data
Content and destination address.
When user needs to operate a certain equipment, user can assign operational order, host computer by host computer
Receiving after operational order can include data content and target in the data packet to network controller transmission standard data packet
The address of equipment.
Step 202: when detecting that standard communication interface receives the data packet of host computer transmission, to received number
It is parsed according to packet, to obtain the data format and data content of the data packet.
The normal data packet received is parsed, to obtain the data format and data content of the normal data packet.
Step 203: according to the destination address in the data packet, determining the equipment that host computer needs to operate.
Network controller needs to be determined according to the destination address in normal data packet to need the equipment operated to be using which
A kind of communication protocol.
Step 204: according to transformational relation preset between different data format and standard data format, by the data packet
Data Format Transform is the data format for the equipment that host computer needs to operate.
The equipment for specifying communication protocol type, different data format and standard data format further according to preset in advance
Standard data format is converted to corresponding data format by transformational relation.
Step 205: needing the data format of the equipment operated to seal data content and destination address according to host computer
Dress.
Obtained data format is encapsulated together with data content and destination address, is encapsulated into needing to operate equipment
Data packet.
Step 206: the data packet obtained after encapsulation is sent to the equipment that host computer needs to operate.
In the equipment operated needed for packaged data packet is transferred to by corresponding communication interface.
Optionally, referring to Fig. 3, the schematic diagram of data transmission device of the present invention, the various communication interfaces on network controller
It include: the interface of RJ45 interface, RS232 interface, RS485 interface and other existing communication agreements, which includes:
First detection module, the first parsing module, the first conversion module, the first package module and the first transmission module；
First detection module is connect with each communication interface and the connection of the first parsing module, is used to detect each communication interface
In whether there is communication interface to receive data packet, if there is data packet, data packet is just transferred to the first parsing module.
First parsing module is connect with the first conversion module, is used for when receiving data packet, to received number
It is parsed according to packet, to obtain the data format and data content of the data packet, which kind of communications protocol which can be determined that
Equipment data packet, but specific data content is not parsed, later by the data format of data packet and data content transmission
To the first conversion module.
First conversion module is connect with the first package module, pre- for calling after receiving the data format of data packet
If different data format and standard data format between transformational relation, by the Data Format Transform of the data packet be setting mark
Quasi- data format gives the data format of normal data packet and data content transmission to the first package module later.
First package module is connect with the first transmission module, and standard data format and data content are packaged, and will
Packaged normal data packet is transferred to first transmission module.
First transmission module is connect with standard communication interface, for leading to the normal data packet obtained after encapsulation by standard
Communication interface is sent to host computer, for host computer reading.
Optionally, referring to Fig. 4, another schematic diagram of data transmission device of the present invention, the device further include:
Second detection module, the second parsing module, the second conversion module, the second package module and the second transmission module.
Second detection module is connect with standard communication interface and the second parsing module, is for examination criteria communication interface
The no data packet for receiving host computer transmission, which is normal data packet, which includes data content and purpose
The normal data packet is transferred to the second parsing module later by address.
Second parsing module is connect with the second conversion module, in the data packet for receiving the transmission of the second detection module
When, received data packet is parsed, to obtain the data format and data content of the data packet, the second parsing module
Also according to the destination address in the data packet, determine the equipment that host computer needs to operate, later by the data format of data packet and
Data content transmission gives the second conversion module.
Second conversion module is connect with the second package module, pre- for calling after receiving the data format of data packet
If different data format and standard data format between transformational relation, by the Data Format Transform of the data packet be it is described upper
Machine needs the data format of equipment operated, and the data format for the equipment that host computer is needed to operate and data content transmission to
Second package module.
Second package module is connect with the second transmission module, data format, the data of the equipment that host computer is needed to operate
Content and destination address are packaged, and need the data packet of the equipment operated to be transferred to the second transmission packaged host computer
Module.
Second transmission module is connect with each communications protocol interface, for the data packet obtained after encapsulation to be sent to host computer
The equipment for needing to operate.
Optionally, referring to Fig. 5, the schematic diagram of inventive network controller, network controller includes processor and interface
Collection modules, and there is various communication interfaces and standard communication interface, each communication interface in various communication interfaces is used for
The equipment of communications protocol corresponding to support connects, and various communication interfaces are connect with set of interfaces module, and set of interfaces module makes
Connection between various communication interfaces and processor becomes simple and direct, and standard communication interface with host computer for connecting, network-control
The processor of device is for completing following steps:
Step 101: whether thering is communication interface to receive data packet in detection various communication interfaces.
Step 102: when thering is communication interface to receive data packet in detecting various communication interfaces, to received number
It is parsed according to packet, to obtain the data format and data content of the data packet.
Step 103: according to transformational relation preset between different data format and standard data format, by the data packet
Data Format Transform is standard data format.
Step 104: data content being packaged according to standard data format.
Step 105: the data packet obtained after encapsulation is sent to host computer by standard communication interface.
The processor of the network controller is also used to complete following steps:
Step 201: whether examination criteria communication interface receives the data packet of host computer transmission, which includes data
Content and destination address.
Step 202: when detecting that standard communication interface receives the data packet of host computer transmission, to received number
It is parsed according to packet, to obtain the data format and data content of the data packet.
Step 203: according to the destination address in the data packet, determining the equipment that host computer needs to operate.
Step 204: according to transformational relation preset between different data format and standard data format, by the data packet
Data Format Transform is the data format for the equipment that host computer needs to operate.
Step 205: needing the data format of the equipment operated to seal data content and destination address according to host computer
Dress.
Step 206: the data packet obtained after encapsulation is sent to the equipment that host computer needs to operate.
Optionally, referring to Fig. 6, the schematic diagram of data transmission system of the present invention, which includes host computer, network controller
And equipment 1, equipment 2, the equipment 3 of the different communications protocol of three supports, network controller have various communication interfaces and standard
Communication interface, network controller are connected by a kind of equipment of communication interface communications protocol corresponding to support, and network controller is logical
It crosses standard communication interface to connect with host computer, the equipment of different communications protocol is by network controller, such as equipment 1, equipment in Fig. 6
2, equipment 3 is connect with network controller by corresponding communication interface respectively, as there are also other equipment can side by
Formula is connect with network controller, and above-described data transmission method is used after connection, realizes the communication with host computer, equally
Host computer is realized logical from the equipment of different communications protocol also by network controller using above-described data transmission method
News.
Data transmission method and device proposed by the invention, network controller and data transmission system can be applied
In energy station equipment, the monitoring of building equipment can also apply and be suitable for the place of this type at other, and the present invention is simultaneously unlimited
Make its range.
It should also be noted that, herein, relational terms such as first and second and the like are used merely to one
Entity or operation are distinguished with another entity or operation, without necessarily requiring or implying between these entities or operation
There are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant are intended to contain
Lid non-exclusive inclusion, so that the process, method for including a series of elements not only includes those elements, but also including
Other elements that are not explicitly listed, or further include the element intrinsic for this process, method.
Above to a kind of method, apparatus, network controller and the system of data transmission provided by the present invention, carry out
It is discussed in detail, used herein a specific example illustrates the principle and implementation of the invention, above embodiments
Illustrate to be merely used to help understand method and its core concept of the invention；At the same time, for those skilled in the art, according to
According to thought of the invention, there will be changes in the specific implementation manner and application range, in conclusion the content of the present specification
It should not be construed as limiting the invention.
Claims (10)
1. a kind of data transmission method, which is characterized in that be applied to network controller, the network controller has a variety of communications
Interface and standard communication interface, the network controller are connected by a kind of equipment of communication interface communications protocol corresponding to support
It connecing, the network controller also passes through the standard communication interface and connect with host computer, this method comprises:
Whether detect in the various communication interfaces has communication interface to receive data packet；
When having communication interface to receive data packet in detecting the various communication interfaces, received data packet is carried out
Parsing, to obtain the data format and data content of the data packet；
According to transformational relation preset between different data format and standard data format, by the Data Format Transform of the data packet
For the standard data format；
The data content is packaged according to the standard data format；
The data packet obtained after encapsulation is sent to the host computer by the standard communication interface.
2. the method according to claim 1, wherein the method also includes:
Detect whether the standard communication interface receives the data packet that the host computer is sent, which includes data content
And destination address；
When detecting that the standard communication interface receives the data packet that the host computer is sent, to received data packet
It is parsed, to obtain the data format and data content of the data packet；
According to the destination address in the data packet, the equipment that the host computer needs to operate is determined；
According to transformational relation preset between different data format and standard data format, by the Data Format Transform of the data packet
For the data format for the equipment that the host computer needs to operate；
The data format of the equipment operated is needed to seal the data content and the destination address according to the host computer
Dress；
The data packet obtained after encapsulation is sent to the equipment that the host computer needs to operate.
3. the method according to claim 1, wherein the various communication interfaces include: RJ45 interface, RS232
Interface, RS485 interface.
4. the method according to claim 1, wherein the standard data format is user in the network-control
The data format configured on device.
5. a kind of data transmission device, which is characterized in that be applied to network controller, the network controller has a variety of communications
Interface and standard communication interface, the network controller are connected by a kind of equipment of communication interface communications protocol corresponding to support
It connects, the network controller also passes through the standard communication interface and connect with host computer, and described device includes:
First detection module, the first parsing module, the first conversion module, the first package module and the first transmission module；
Whether the first detection module is used to detect in the various communication interfaces has communication interface to receive data packet, and will
Data packet is transferred to first parsing module；
First parsing module is used for when receiving data packet, is parsed to received data packet, to be somebody's turn to do
The data format and data content of data packet, and give the data format of the data packet and data content transmission to the first modulus of conversion
Block；
First conversion module is used for according to transformational relation preset between different data format and standard data format, by this
The Data Format Transform of data packet is the standard data format, and by the data format and data content of the normal data packet
It is transferred to the first package module；
First package module is used to be packaged the data content according to the standard data format, and will be packaged
Normal data packet be transferred to first transmission module；
First transmission module is used to the normal data packet obtained after encapsulation being sent to institute by the standard communication interface
State host computer.
6. device according to claim 5, which is characterized in that described device further include:
Second detection module, the second parsing module, the second conversion module, the second package module and the second transmission module；
Second detection module is used to detect whether the standard communication interface to receive the data packet that the host computer is sent,
The data packet includes data content and destination address, and the normal data packet is transferred to second parsing module；
Second parsing module is used for when receiving the data packet that second detection module is sent, to received number
It is parsed according to packet, to obtain the data format and data content of the data packet, second parsing module is according to the data packet
In destination address, determine the equipment that the host computer needs to operate, and by the data format and data content of the data packet
It is transferred to second conversion module；
Second conversion module is used for according to transformational relation preset between different data format and standard data format, by this
The Data Format Transform of data packet is the data format for the equipment that the host computer needs to operate, and the host computer is needed to grasp
The data format and data content transmission of the equipment of work give second package module；
Second package module is used to need the data format of the equipment operated to the data content according to the host computer
Be packaged with the destination address, and by the packaged host computer need the equipment operated data packet be transferred to it is described
Second transmission module；
Second transmission module is used to the data packet obtained after encapsulation being sent to the equipment that the host computer needs to operate.
7. a kind of network controller, which is characterized in that the network controller includes processor, and have various communication interfaces and
Standard communication interface, equipment company of each communication interface for communications protocol corresponding to supports in the various communication interfaces
It connects, for connecting with host computer, the processor is used for the standard communication interface:
Whether detect in the various communication interfaces has communication interface to receive data packet；
When having communication interface to receive data packet in detecting the various communication interfaces, received data packet is carried out
Parsing, to obtain the data format and data content of the data packet；
According to transformational relation preset between different data format and standard data format, by the Data Format Transform of the data packet
For the standard data format；
The data content is packaged according to the standard data format；
The data packet obtained after encapsulation is sent to the host computer by the standard communication interface.
8. network controller according to claim 7, which is characterized in that the processor is also used to:
Detect whether the standard communication interface receives the data packet that the host computer is sent, which includes data content
And destination address；
When detecting that the standard communication interface receives the data packet that the host computer is sent, to received data packet
It is parsed, to obtain the data format and data content of the data packet；
According to the destination address in the data packet, the equipment that the host computer needs to operate is determined；
According to transformational relation preset between different data format and standard data format, by the Data Format Transform of the data packet
For the data format for the equipment that the host computer needs to operate；
The data format of the equipment operated is needed to seal the data content and the destination address according to the host computer
Dress；
The data packet obtained after encapsulation is sent to the equipment that the host computer needs to operate.
9. network controller according to claim 7, which is characterized in that the various communication interfaces packet of the network controller
It includes: RJ45 interface, RS232 interface, RS485 interface.
10. a kind of data transmission system, which is characterized in that the system comprises host computer, network controller and multiple supports
The equipment of different communications protocol, the network controller have various communication interfaces and standard communication interface, the network-control
Device is connected by a kind of equipment of communication interface communications protocol corresponding to support, and the network controller passes through the standard traffic
Interface is connect with the host computer, and the network controller requires any data transmission method of 1-4 for perform claim.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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