CN106656708A - Communication method and device based on communication protocol in master-slave mode - Google Patents
Communication method and device based on communication protocol in master-slave mode Download PDFInfo
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- CN106656708A CN106656708A CN201611108714.XA CN201611108714A CN106656708A CN 106656708 A CN106656708 A CN 106656708A CN 201611108714 A CN201611108714 A CN 201611108714A CN 106656708 A CN106656708 A CN 106656708A
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- 238000004891 communication Methods 0.000 title claims abstract description 101
- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000012544 monitoring process Methods 0.000 claims abstract description 23
- 238000004088 simulation Methods 0.000 claims description 3
- 230000006870 function Effects 0.000 description 14
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- 238000010586 diagram Methods 0.000 description 11
- 238000004590 computer program Methods 0.000 description 7
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L12/40006—Architecture of a communication node
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L2012/40208—Bus networks characterized by the use of a particular bus standard
- H04L2012/40228—Modbus
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Abstract
The invention provides a communication method and a device based on a communication protocol in a master-slave mode, which are applied to nodes based on the communication protocol in the master-slave mode, wherein the method comprises the following steps: receiving monitoring information; and setting the node state as a server state according to the monitoring information. Alternatively, it comprises: acquiring the address of a target server; and connecting to the target server according to the address of the target server, and setting the node state into a client state, so that the client has the function of the server at the same time, and a plurality of nodes based on a communication protocol in a master-slave mode can mutually read and write data.
Description
Technical field
The present invention relates to communication technical field, and in particular to a kind of communication means based on communication protocol under master slave mode and
Device.
Background technology
Modbus agreements are that ICP/IP protocol is that coverage rate is high in network using a kind of very wide communication protocol in industry
Communication protocol.
Modbus ICP/IP protocols are capable of achieving EPA data exchange.The strong point of both the above agreement is combined, it is real
Show that transmission range is longer, transmission data ability is higher and it is cheap to make use of general-purpose network component to reach exercise price
Purpose.Being widely recognized as of applying in industry is have also been obtained at present.
At present, modbus TCP/IP are mainly according to the one master and multiple slaves pattern of similar modbus agreements in network interface communication,
The namely pattern of the multiple slaves of main frame, usually slave to main frame send request and then main frame response, host broadcast,
The modes such as main frame roll-call.Fig. 1 is networking model schematic diagram between industrial equipment in prior art, as shown in figure 1, communication network structure
The two parts built：Server and client computer.Communication process：Client computer sends to server and asks, and sets up communication.Server is always
In listening state.
The content of the invention
In view of this, a kind of communication means based on communication protocol under master slave mode and dress are embodiments provided
Put, to solve prior art in can not mutually read data and to write between MODBUS TCP/IP main frames and MODBUS TCP/IP slaves
The problem of data.
For this purpose, embodiments providing following technical scheme：
According in a first aspect, embodiments provide a kind of communication means based on communication protocol under master slave mode,
The node based on communication protocol under master slave mode is applied to, including：Receive monitoring information；According to the monitoring information by node shape
State is set to server state.
Alternatively, node state is set to after server state according to the monitoring information, is also included：From based on master
The client computer read switch amount and/or analog quantity of communication protocol under slave pattern.
Alternatively, include from the client computer read switch amount and/or analog quantity based on communication protocol under master slave mode：Obtain
First configured information, wherein, first configured information is used for the length for indicating the initial address for reading data and reading data；
According to first configured information from the client computer read switch amount and/or analog quantity based on communication protocol under master slave mode.
According to second aspect, the embodiment of the present invention additionally provides a kind of communication party based on communication protocol under master slave mode
Method, is applied to the node based on communication protocol under master slave mode, including：Obtain the address of destination server；According to the target
The address of server is connected to the destination server, and node state is set into client state.
Alternatively, node state is set to after client state, is also included：From the destination server read switch
Amount and/or analog quantity；And/or, send switching value and/or analog quantity to the destination server.
Alternatively, include from the destination server read switch amount and/or analog quantity：The second configured information is obtained, its
In, second configured information is used for the length for indicating the initial address for reading data and reading data；Refer to according to described second
Show information from the destination server read switch amount and/or analog quantity；And/or, send switching value to the destination server
And/or analog quantity includes：The 3rd configured information is obtained, wherein, the 3rd configured information is used for the starting for indicating to send data
Address and the length of transmission data；Switching value and/or simulation are sent to the destination server according to the 3rd configured information
Amount.
Alternatively, communication protocol is MODBUS ICP/IP protocols under the master slave mode.
According to the third aspect, the embodiment of the present invention additionally provides a kind of communication dress based on communication protocol under master slave mode
Put, be applied to the node based on communication protocol under master slave mode, including：Receiver module, for receiving monitoring information；First is arranged
Module, for node state to be set into server state according to the monitoring information.
Alternatively, described device also includes：First read module, in first setup module according to the prison
Listen information that node state is set to after server state, from the client computer read switch based on communication protocol under master slave mode
Amount and/or analog quantity.
Alternatively, first read module includes：First acquisition unit, for obtaining the first configured information, wherein, institute
State the first configured information for indicate read data initial address and reading data length；First reading unit, for root
According to first configured information from the client computer read switch amount and/or analog quantity based on communication protocol under master slave mode.
According to fourth aspect, the embodiment of the present invention additionally provides a kind of communication dress based on communication protocol under master slave mode
Put, be applied to the node based on communication protocol under master slave mode, including：Acquisition module, for obtaining the address of destination server；
Second setup module, for being connected to the destination server according to the address of the destination server, node state is arranged
For client state.
Alternatively, described device also includes：Second read module, for setting node state in second setup module
After being set to client state, from the destination server read switch amount and/or analog quantity；And/or, sending module is used for
After node state to be set to second setup module client state, to the destination server switching value is sent
And/or analog quantity.
Alternatively, second read module includes：Second acquisition unit, for obtaining the second configured information, wherein, institute
State the second configured information for indicate read data initial address and reading data length；Second reading unit, for root
According to second configured information from the destination server read switch amount and/or analog quantity；And/or, sending module includes：The
Three acquiring units, for obtaining the 3rd configured information, wherein, the 3rd configured information is used for the starting point for indicating to send data
Location and the length of transmission data；Sending module, switchs for being sent to the destination server according to the 3rd configured information
Amount and/or analog quantity.
Alternatively, communication protocol is MODBUS ICP/IP protocols under the master slave mode.
Embodiment of the present invention technical scheme, has the advantage that：
1. a kind of communication means based on communication protocol under master slave mode and device are embodiments provided, is applied to
Based on the node of communication protocol under master slave mode, monitoring information is received, node state is set to by server according to monitoring information
State, for example, in the client computer based on communication protocol under master slave mode after monitoring information is received, the client computer is arranged
For server state, so that the client computer has been provided simultaneously with the function of server, and then cause to lead to based under master slave mode
Can mutually read data between multiple nodes of letter agreement and write data.
2. a kind of communication means based on communication protocol under master slave mode and device are embodiments provided, is applied to
Based on the node of communication protocol under master slave mode, the address of destination server is obtained, be connected to according to the address of destination server
Destination server, by node state client state is set to, and for example, is being obtained based on the server of communication protocol under master slave mode
After getting the address of destination server, the destination server is connected to, the server is set into client state, so that
The function that the server has been provided simultaneously with client computer is obtained, and then is caused between the multiple nodes based on communication protocol under master slave mode
Data can mutually be read and data are write.
Description of the drawings
In order to be illustrated more clearly that the specific embodiment of the invention or technical scheme of the prior art, below will be to concrete
The accompanying drawing to be used needed for embodiment or description of the prior art is briefly described, it should be apparent that, in describing below
Accompanying drawing is some embodiments of the present invention, for those of ordinary skill in the art, before creative work is not paid
Put, can be with according to these other accompanying drawings of accompanying drawings acquisition.
Fig. 1 is networking model schematic diagram between industrial equipment in prior art；
Fig. 2 is a flow chart based on the communication means of communication protocol under master slave mode according to embodiments of the present invention；
Fig. 3 is networking model schematic diagram between industrial equipment according to embodiments of the present invention；
Fig. 4 is another flow process based on the communication means of communication protocol under master slave mode according to embodiments of the present invention
Figure；
Fig. 5 is nodal interface schematic diagram according to embodiments of the present invention；
Fig. 6 is a structural frames based on the communicator of communication protocol under master slave mode according to embodiments of the present invention
Figure；
Fig. 7 is a structural frames based on the communicator of communication protocol under master slave mode according to embodiments of the present invention
Figure.
Specific embodiment
Technical scheme is clearly and completely described below in conjunction with accompanying drawing, it is clear that described enforcement
Example is a part of embodiment of the invention, rather than the embodiment of whole.Based on the embodiment in the present invention, ordinary skill
The every other embodiment that personnel are obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
In describing the invention, it should be noted that term " " center ", " on ", D score, "left", "right", " vertical ",
The orientation or position relationship of the instruction such as " level ", " interior ", " outward " be based on orientation shown in the drawings or position relationship, merely to
Be easy to description the present invention and simplify description, rather than indicate or imply indication device or element must have specific orientation,
With specific azimuth configuration and operation, therefore it is not considered as limiting the invention.Additionally, term " first ", " second ",
" the 3rd " is only used for describing purpose, and it is not intended that indicating or implying relative importance.
In describing the invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Company ", " connection " should be interpreted broadly, for example, it may be being fixedly connected, or being detachably connected, or be integrally connected；Can
Being to be mechanically connected, or electrically connect；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, can be with
It is the connection of two element internals, can is wireless connection, or wired connection.For one of ordinary skill in the art
For, above-mentioned term concrete meaning in the present invention can be understood with concrete condition.
As long as additionally, technical characteristic involved in invention described below different embodiments non-structure each other
Just can be combined with each other into conflict.
Embodiment 1
A kind of communication means based on communication protocol under master slave mode is provided in the present embodiment, is applied to based on principal and subordinate
The node of communication protocol under pattern, Fig. 2 is the communication means based on communication protocol under master slave mode according to embodiments of the present invention
A flow chart, as shown in Fig. 2 the flow process comprises the steps：
Step S201：Receive monitoring information；
Step S202：Node state is set to by server state according to the monitoring information.For example, based on master slave mode
The client computer is set to server state by the client computer of lower communication protocol after monitoring information is received, so that should
Client computer has been provided simultaneously with the function of server, and then cause between the multiple nodes based on communication protocol under master slave mode can be with
Mutually read data and write data.
By above-mentioned steps, in the case where monitoring information is received, by the node based on communication protocol under master slave mode
Equipment is server state, so that being provided simultaneously with server and client computer based on the node of communication protocol under master slave mode
Function, each node can monitor the data of other each nodes as server, access other each nodes as client computer
Carry out the read-write of data, realize without principal communication, i.e., it is many it is main it is many from communication mode, facilitate realize each industrial equipment it
Between data read and write.
Fig. 3 is networking model schematic diagram between industrial equipment according to embodiments of the present invention, as shown in figure 3, each node
Two parts fusion is done：Existing server capability has client functionality again.It is each that each node can monitor other as server
The data of node, other each nodes are accessed as client computer carry out the read-write of data.
After node state to be set to server state, the node just can read data from client computer, one
In individual alternative embodiment, from client computer read switch amount and/or analog quantity based on communication protocol under master slave mode, so as to side
Just the switching value and/or analog quantity of other nodes, have efficiently been got.
When node reads the switching value and/or analog quantity of other nodes, in one alternate embodiment, is obtained first
One configured information, wherein, the first configured information is used for the length for indicating the initial address for reading data and reading data, according to the
One configured information is from the client computer read switch amount and/or analog quantity based on communication protocol under master slave mode.So as to pass through this
One configured information, can get the switching value and/or analog quantity for wanting to obtain.
In another alternative embodiment, another kind of communication means based on communication protocol under master slave mode is additionally provided,
The node based on communication protocol under master slave mode is applied to, Fig. 4 is according to embodiments of the present invention based on communication under master slave mode
Another flow chart of the communication means of agreement, as shown in figure 4, the flow process comprises the steps：
Step S401, obtains the address of destination server；
Step S402, according to the address of destination server destination server is connected to, and node state is set into client computer
State.
By above-mentioned steps, when the address of destination server is got, the destination server is connected to, by node state
Client state is set to, for example, in the address that destination server is got based on the server of communication protocol under master slave mode
Afterwards, the destination server is connected to, the server is set into client state, so that communicating based under master slave mode
The node of agreement has been provided simultaneously with the function of server and client computer, and each node can monitor other each nodes as server
Data, other each nodes accessed as client computer carry out the read-write of data, realize without principal communication, i.e., it is many it is main it is many from it is logical
Letter mode, facilitates the data realized between each industrial equipment and reads and write.
In one alternate embodiment, node state is set to after client state, reads from destination server and open
Measure and/or analog quantity pass.In another alternative embodiment, node state is set to after client state, to target clothes
Business device sends switching value and/or analog quantity.So as to the interaction that can complete switching value and/or analog quantity among multiple nodes.
Each node in order to read or sending switching value and/or analog quantity as desired, in one alternate embodiment,
The second configured information is obtained, wherein, the second configured information is used for the length for indicating the initial address for reading data and reading data,
According to the second configured information from destination server read switch amount and/or analog quantity.In another alternative embodiment, the is obtained
Three configured informations, wherein, the 3rd configured information is used for the length for indicating the initial address for sending data and sending data, according to the
Three configured informations to destination server sends switching value and/or analog quantity.
Communication protocol can include various communications protocols under above-mentioned master slave mode, for example, can assist for MODBUS TCP/IP
View.
The node for being provided simultaneously with server and client functionality is described with reference to Fig. 5.
Whole system is that the Qt platforms under Linux environment are completed.Communication is introduced below by concrete interface
Process and allomeric function.Fig. 5 top halfs are the parts as server, and Fig. 5 the latter half is the part as client computer.
(1) server section：
The listen in the upper left corner is first clicked on, makes itself to be in listening state.
Serverip parts are the ip addresses of server itself, and the setting of ip addresses can be carried out by the position in the upper right corner
Update.
The switching value and analog quantity of server itself can be updated the data by update bit and update word.
The data display of renewal is inside input status and input registers.
Two forms of right half part of server：Coil status and holding registers.It is for receiving visitor
Switching value that family machine is sent and analog data.
(2) client-part：
It is the bottom half at whole interface as shown in interface first as the part of client computer.The upper left corner can be arranged will be even
The server address for connecing, then clicks on connect and is attached.Read onlymode and read write mode are optional
, it is to have selected the switching value for reading destination server that the former acts on, and the latter's effect is to have selected the mould for reading destination server
Analog quantity.
There are two forms left half-court：Read status and read registers.The former is to read the destination server of coming
Switching value, the latter be read come destination server analog quantity.Two forms have start addr and bit count,
Its effect is respectively to arrange the initial address of reading data and arrange the length for reading data.Get bit are to start to obtain target
The instruction key of server switching value, get word are the instruction keys for starting to obtain destination server analog quantity.
There are two forms right half-court：Coil status and holding registers.The former is that client computer will be sent to
The switching value data of destination server, the latter is the analog data that client computer will be sent to destination server.Can pass through
Update bit update the data of the latter by update word updating the former data.Two forms have start
Addr and bit count, its effect is respectively to arrange the initial address of transmission data and arrange the length for sending data.Send
Bit is the instruction key for starting to send switching value, and send word are the instruction keys for starting to send analog quantity.
It is exactly above that simple declaration is exactly that each node itself is both come the introduction to individual node according to the interface designed
Server is again client computer, and it can obtain the data that other nodes are sent, it is also possible to allow other nodes to read the data of oneself,
And each node ip of itself and the ip to be connected can be carried out arranging.
As client-part when the ip of the destination server to be connected is arranged, multiple nodes can connect same mesh
Mark server can also be different, relatively more flexible.
Embodiment 2
A kind of communicator based on communication protocol under master slave mode is additionally provided in the present embodiment, and the device is used for real
Existing above-described embodiment and preferred embodiment, had carried out repeating no more for explanation.As used below, term " module "
The software of predetermined function and/or the combination of hardware can be realized.Although the device described by following examples is preferably with software
To realize, but hardware, or the realization of the combination of software and hardware is also may and to be contemplated.
A kind of communicator based on communication protocol under master slave mode is embodiments provided, is applied to based on principal and subordinate
The node of communication protocol under pattern, as shown in fig. 6, including：Receiver module 61, for receiving monitoring information；First setup module
62, for node state to be set into server state according to the monitoring information.
Alternatively, the device also includes：First read module, in the first setup module 62 according to the monitoring information
Node state is set to after server state, from the client computer read switch amount based on communication protocol under master slave mode and/
Or analog quantity.
Alternatively, the first read module includes：First acquisition unit, for obtaining the first configured information, wherein, first refers to
Show information for indicate read data initial address and reading data length；First reading unit, for referring to according to first
Show information from the client computer read switch amount and/or analog quantity based on communication protocol under master slave mode.
The further function description of above-mentioned modules is identical with above-mentioned correspondence embodiment, will not be described here.
Embodiment 3
Another kind of communicator based on communication protocol under master slave mode is additionally provided in the present embodiment, and the device is used for
Above-described embodiment and preferred embodiment are realized, repeating no more for explanation had been carried out.As used below, term " mould
Block " can realize the software of predetermined function and/or the combination of hardware.Although the device described by following examples is preferably with soft
Part is realizing, but hardware, or the realization of the combination of software and hardware is also may and to be contemplated.
The further function description of above-mentioned modules is identical with above-mentioned correspondence embodiment, will not be described here.
The embodiment of the present invention additionally provides another kind of communicator based on communication protocol under master slave mode, is applied to be based on
The node of communication protocol under master slave mode, as shown in fig. 7, comprises：Acquisition module 71, for obtaining the address of destination server；
Second setup module 72, for the address according to destination server destination server is connected to, and node state is set into client
Machine state.
Alternatively, the device also includes：Second read module, for arranging node state in second setup module 72
After for client state, from destination server read switch amount and/or analog quantity；And/or, sending module, for second
Setup module 72 is set to node state after client state, and to destination server switching value and/or analog quantity are sent.
Alternatively, second read module includes：Second acquisition unit, for obtaining the second configured information, wherein, second
Configured information is used for the length for indicating the initial address for reading data and reading data；Second reading unit, for according to second
Configured information is from destination server read switch amount and/or analog quantity；And/or, sending module includes：3rd acquiring unit, uses
In the 3rd configured information of acquisition, wherein, the 3rd configured information is used for initial address and the transmission data for indicating to send data
Length；Sending module, for sending switching value and/or analog quantity to the destination server according to the 3rd configured information.
Alternatively, communication protocol is MODBUS ICP/IP protocols under the master slave mode.
The further function description of above-mentioned modules is identical with above-mentioned correspondence embodiment, will not be described here.
Those skilled in the art are it should be appreciated that embodiments of the invention can be provided as method, system or computer program
Product.Therefore, the present invention can be using complete hardware embodiment, complete software embodiment or with reference to the reality in terms of software and hardware
Apply the form of example.And, the present invention can be adopted and wherein include the computer of computer usable program code at one or more
The computer program implemented in usable storage medium (including but not limited to magnetic disc store, CD-ROM, optical memory etc.) is produced
The form of product.
The present invention is the flow process with reference to method according to embodiments of the present invention, equipment (system) and computer program
Figure and/or block diagram are describing.It should be understood that can be by computer program instructions flowchart and/or each stream in block diagram
The combination of journey and/or square frame and flow chart and/or the flow process in block diagram and/or square frame.These computer programs can be provided
The processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing devices is instructed to produce
A raw machine so that produced for reality by the instruction of computer or the computing device of other programmable data processing devices
The device of the function of specifying in present one flow process of flow chart or one square frame of multiple flow processs and/or block diagram or multiple square frames.
These computer program instructions may be alternatively stored in can guide computer or other programmable data processing devices with spy
In determining the computer-readable memory that mode works so that the instruction being stored in the computer-readable memory is produced to be included referring to
Make the manufacture of device, the command device realize in one flow process of flow chart or one square frame of multiple flow processs and/or block diagram or
The function of specifying in multiple square frames.
These computer program instructions also can be loaded into computer or other programmable data processing devices so that in meter
Series of operation steps is performed on calculation machine or other programmable devices to produce computer implemented process, so as in computer or
The instruction performed on other programmable devices is provided for realizing in one flow process of flow chart or multiple flow processs and/or block diagram one
The step of function of specifying in individual square frame or multiple square frames.
Obviously, above-described embodiment is only intended to clearly illustrate example, and not to the restriction of embodiment.It is right
For those of ordinary skill in the art, can also make on the basis of the above description other multi-forms change or
Change.There is no need to be exhaustive to all of embodiment.And the obvious change thus extended out or
Among changing still in the protection domain of the invention.
Claims (14)
1. a kind of communication means based on communication protocol under master slave mode, is applied to the section based on communication protocol under master slave mode
Point, it is characterised in that include：
Receive monitoring information；
Node state is set to by server state according to the monitoring information.
2. method according to claim 1, it is characterised in that node state is set to by service according to the monitoring information
After device state, also include：
From client computer read switch amount and/or analog quantity based on communication protocol under master slave mode.
3. method according to claim 2, it is characterised in that read from the client computer based on communication protocol under master slave mode
Switching value and/or analog quantity include：
The first configured information is obtained, wherein, first configured information is used to indicate the initial address and receive data that read data
According to length；
According to first configured information from the client computer read switch amount based on communication protocol under master slave mode and/or simulation
Amount.
4. a kind of communication means based on communication protocol under master slave mode, is applied to the section based on communication protocol under master slave mode
Point, it is characterised in that include：
Obtain the address of destination server；
The destination server is connected to according to the address of the destination server, node state is set into client state.
5. method according to claim 4, it is characterised in that node state is set to after client state, is also wrapped
Include：
From the destination server read switch amount and/or analog quantity；And/or,
Switching value and/or analog quantity are sent to the destination server.
6. method according to claim 5, it is characterised in that from the destination server read switch amount and/or simulation
Amount includes：The second configured information is obtained, wherein, second configured information is used for initial address and the reading for indicating to read data
The length of data；According to second configured information from the destination server read switch amount and/or analog quantity；And/or,
Sending switching value and/or analog quantity to the destination server includes：The 3rd configured information is obtained, wherein, the described 3rd
Configured information is used for the length for indicating the initial address for sending data and sending data；According to the 3rd configured information to described
Destination server sends switching value and/or analog quantity.
7. method according to any one of claim 1 to 6, it is characterised in that communication protocol is under the master slave mode
MODBUS ICP/IP protocols.
8. a kind of communicator based on communication protocol under master slave mode, is applied to the section based on communication protocol under master slave mode
Point, it is characterised in that include：
Receiver module, for receiving monitoring information；
First setup module, for node state to be set into server state according to the monitoring information.
9. device according to claim 8, it is characterised in that described device also includes：
First read module, for node state to be set into service according to the monitoring information in first setup module
After device state, from client computer read switch amount and/or analog quantity based on communication protocol under master slave mode.
10. device according to claim 9, it is characterised in that first read module includes：
First acquisition unit, for obtaining the first configured information, wherein, first configured information is used to indicate to read data
The length of initial address and reading data；
First reading unit, for being read from the client computer based on communication protocol under master slave mode according to first configured information
Switching value and/or analog quantity.
A kind of 11. communicators based on communication protocol under master slave mode, are applied to the section based on communication protocol under master slave mode
Point, it is characterised in that include：
Acquisition module, for obtaining the address of destination server；
Second setup module, for being connected to the destination server according to the address of the destination server, by node state
It is set to client state.
12. devices according to claim 11, it is characterised in that described device also includes：
Second read module, after node state to be set to client state in second setup module, from described
Destination server read switch amount and/or analog quantity；And/or,
Sending module, after node state to be set to client state in second setup module, to the target
Server sends switching value and/or analog quantity.
13. devices according to claim 12, it is characterised in that second read module includes：Second acquisition unit,
For obtaining the second configured information, wherein, second configured information is used to indicate the initial address and receive data that read data
According to length；Second reading unit, for according to second configured information from the destination server read switch amount and/or
Analog quantity；And/or,
Sending module includes：3rd acquiring unit, for obtaining the 3rd configured information, wherein, the 3rd configured information is used for
Indicate the initial address for sending data and the length for sending data；Sending module, for according to the 3rd configured information to institute
State destination server and send switching value and/or analog quantity.
14. devices according to any one of claim 11 to 13, it is characterised in that communication protocol under the master slave mode
For MODBUS ICP/IP protocols.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611108714.XA CN106656708A (en) | 2016-12-06 | 2016-12-06 | Communication method and device based on communication protocol in master-slave mode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611108714.XA CN106656708A (en) | 2016-12-06 | 2016-12-06 | Communication method and device based on communication protocol in master-slave mode |
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