CN107896234A - The method of transmitting message, Modbus communication networks and equipment in Modbus communication networks - Google Patents
The method of transmitting message, Modbus communication networks and equipment in Modbus communication networks Download PDFInfo
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- CN107896234A CN107896234A CN201711483731.6A CN201711483731A CN107896234A CN 107896234 A CN107896234 A CN 107896234A CN 201711483731 A CN201711483731 A CN 201711483731A CN 107896234 A CN107896234 A CN 107896234A
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- node device
- module
- framing
- host
- message
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Classifications
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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
- H04L69/06—Notations for structuring of protocol data, e.g. abstract syntax notation one [ASN.1]
-
- 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
-
- 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
-
- 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
-
- 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
Abstract
The embodiment of the invention discloses a kind of method of the transmitting message in Modbus communication networks, Modbus communication networks and equipment.The method of transmitting message in Modbus communication networks of the embodiment of the present invention, including：Agreement framing module and the transport module that the initialization module of host node device determines to enable in host node device according to the configuration information of host node device, and the agreement framing module enabled from the initialization module of node device according to the configuration information determination from node device from node device；When obtaining message to be transmitted, the agreement framing module that host node device enables by transmitting message framing, and by the transport module that host node device enables to from node device send framing after message；After the transport module enabled from node device receives the message after framing, the agreement framing module enabled from node device parses the message after framing according to the analysis mode of this module definition.The embodiment of the present invention reduces the implementation complexity and development difficulty of Modbus protocol stacks.
Description
Technical field
The present embodiments relate to the communication technology, more particularly to a kind of side of the transmitting message in Modbus communication networks
Method, Modbus communication networks and equipment.
Background technology
Modbus agreements are the bus protocols that first, the whole world is really used for industry spot, are used extensively in industry control industry,
Including ModbusRTU, ModbusTCP and ModbusASCII.ModbusASCII messages can pass through serial ports, such as RS232/
RS422/RS485 is transmitted, and can also be transmitted, can also can also be passed by GPRS transmission by ZigBee by Ethernet
It is defeated；ModbusRTU can be transmitted by serial ports, such as RS232/RS422/RS485, can also be transmitted by Ethernet,
It can also can be transmitted by GPRS transmission by ZigBee；Equally, ModbusTCP can pass through serial ports, such as RS232/
RS422/RS485 is transmitted, and can also be transmitted, can also can also be passed by GPRS transmission by ZigBee by Ethernet
It is defeated.
Design Modbus protocol stacks realize that the method for code is at present, for passing through Serial Port Transmission ModbusASCII messages
Model Design realize code, code is realized for the Model Design by Serial Port Transmission ModbusRTU messages, for passing through
The Model Design of GPRS transmission ModbusRTU messages realizes code, the pattern for transmitting ModbusRTU messages by ZigBee
Code is realized in design, is realized code for transmitting ModbusTCP design of EDI messages by Ethernet, by that analogy, that is, is directed to
A kind of one section of code of Model Design.
Inventor has found during the present invention is realized：Such design method, not only Code Design repetitive rate is very high,
Moreover, also need to be updated the code of equipment, for example, equipment is using by Serial Port Transmission ModbusRTU messages, if
It is replaced by by GPRS transmission ModbusRTU messages, then designer, which needs to redesign, passes through GPRS transmission ModbusRTU
The design code of message, then equipment reload the design code by GPRS transmission ModbusRTU messages.In addition, with hard
The variation of part equipment and the variation of transmission means, it may appear that new transmission means, so change and demand is more and more, need
Design fresh code.
The content of the invention
The embodiment of the present invention provide a kind of method of the transmitting message in Modbus communication networks, Modbus communication networks and
Equipment, to reduce the implementation complexity of Modbus protocol stacks and development difficulty, the design iterations of code are reduced, improve design effect
Rate.
In a first aspect, the embodiments of the invention provide a kind of method of the transmitting message in Modbus communication networks, including：
The initialization module of host node device determines the host node device according to the configuration information of the host node device
In the agreement framing module that enables and transport module, and from the initialization module of node device according to described from node device
The agreement framing module enabled described in configuration information determination from node device, wherein, each equipment includes multiple agreement framings
Module and multiple transport modules, each agreement framing module define a kind of framing mode of Modbus protocol types and each agreement
The framing mode that framing module defines is different, and each transport module defines a kind of host-host protocol and each transport module defines
Host-host protocol it is different；
When the agreement framing module that the host node device enables obtains message to be transmitted, the host node device
The agreement framing module enabled according to the framing mode of this module definition by the transmitting message framing, the message after framing
Including purpose from node device address, and the transport module enabled by the host node device is according to this module definition
Host-host protocol to it is described from node device send the framing after message；
After the transport module enabled from node device receives the message after the framing, send to it is described from
The agreement framing module that node device enables, the agreement framing module enabled from node device is according to this module
The analysis mode of definition parses the message after the framing.
Optionally, the host node device initialization module to the host node device carry out initialization and it is described from
The initialization module of node device to described after node device initializes, in addition to：
It is described from node device when the agreement framing module enabled from node device obtains message to be transmitted
The agreement framing module enabled according to the framing mode of this module definition by the transmitting message framing, the message after framing
Including purpose host node device address, and by the transport module enabled from node device according to this module definition
Host-host protocol send the framing to the host node device after message；
After the transport module that the host node device enables receives the message after the framing, the master is sent to
The agreement framing module that node device enables, the agreement framing module that the host node device enables is according to this module
The analysis mode of definition parses the message after the framing.
Optionally, the host node device initialization module to the host node device carry out initialization and it is described from
The initialization module of node device to it is described initialized from node device before, in addition to：
The Modbus protocol types supported in each equipment according to the Modbus communication networks create the multiple agreement
Framing module, and the host-host protocol supported according to the Modbus communication networks creates the multiple transport module, it is described respectively to set
It is standby including the host node device and described from node device.
Optionally, in the framing mode from the agreement framing module that node device enables according to this module definition
Before the transmitting message framing, in addition to：
When the transport module enabled from node device listens to the connection request from host node device, institute
The transport module establishment enabled from node device and the connection of the host node device and hyphen handle_ID are stated, and
The handle_ID is informed into the agreement framing module enabled from node device；
It is described that the message received is distinguished by the handle_ID from the agreement framing module that node device enables
From host node device, and by the handle_ID to the message from host node device send feedback message.
Optionally, methods described also includes：
When the transport module enabled from node device determines the Joint failure between host node device, institute
The resource that the transport module enabled from node device discharges the connection is stated, will hyphen corresponding with the connection
Handle_ID is set to closing, and informs that handle_ID described in the agreement framing module enabled from node device is closed
Close.
Optionally, the transport module enabled sends the message after the framing, bag according to the host-host protocol of this module definition
Include：
The transport module enabled calls the hardware driving of corresponding hardware according to the host-host protocol of this module definition, to drive
The dynamic hardware sends the message after the framing.
Second aspect, the embodiments of the invention provide a kind of Modbus communication networks, including：Host node device and from node
Equipment, wherein, each equipment includes multiple agreement framing modules and multiple transport modules, and each agreement framing module definition is a kind of
The framing mode that the framing mode of Modbus protocol types and each agreement framing module define is different, each transport module
It is different to define the host-host protocol that a kind of host-host protocol and each transport module define；
Wherein, the host node device is used for the agreement framing mould for determining to enable according to configuration information by initialization module
Block and transport module；
It is described from node device be used for by initialization module according to configuration information determine the agreement framing module that enables and
Transport module；
The host node device is additionally operable to treat when the agreement framing module enabled by the host node device obtains
, will according to the framing mode of this module definition by the agreement framing module that the host node device enables during transmitting message
The transmitting message framing, the message after framing enable including purpose from node device address, and by the host node device
The transport module according to the host-host protocol of this module definition to it is described from node device send framing after message；
It is described to be additionally operable to receive described group by the transport module enabled from node device from node device
After message after frame, the agreement framing module enabled from node device is sent to, then by described from node device
The agreement framing module enabled parses the message after the framing according to the analysis mode of this module definition.
Optionally, it is described to be additionally operable to from node device when by the agreement framing module enabled from node device
When obtaining message to be transmitted, pass through the framing from the agreement framing module that node device enables according to this module definition
For mode by the transmitting message framing, the message after framing includes purpose host node device address, and is set by described from node
After the standby transport module enabled sends the framing according to the host-host protocol of this module definition to the host node device
Message；
The transport module that the host node device is additionally operable to enable by the host node device receives described group
After message after frame, the agreement framing module that the host node device enables is sent to, then pass through the host node device
The agreement framing module enabled parses the message after the framing according to the analysis mode of this module definition.
Optionally, the Modbus protocol types that each equipment is used to be supported according to the Modbus communication networks create described more
Individual agreement framing module, and the host-host protocol supported according to the Modbus communication networks creates the multiple transport module, institute
Stating each equipment includes the host node device and described from node device.
Optionally, it is described to be additionally operable to monitor when by the transport module enabled from node device from node device
During the connection request of arrival autonomous node equipment, created and the master by the transport module enabled from node device
The connection of node device and hyphen handle_ID, and by the handle_ID inform it is described enable from node device described in
Agreement framing module；Connect by described distinguished from the agreement framing module that node device enables by the handle_ID
The message received from host node device, and by the handle_ID to the message from host node device send out
Send feedback message.
Optionally, it is described to be additionally operable to determine when by the transport module enabled from node device from node device
During Joint failure between host node device, pass through the transport module enabled from node device and discharge the connection
Resource, hyphen handle_ID corresponding with the connection is set to closing, and inform the institute enabled from node device
Handle_ID described in stating agreement framing module is closed.
Optionally, each equipment is used for corresponding hard according to the host-host protocol of this module definition calling by the transport module enabled
The hardware driving of part, to drive the message after the hardware transmission framing, each equipment includes the host node device
With described from node device.
The third aspect, the embodiments of the invention provide a kind of equipment, the equipment includes：
One or more processors；
Storage device, for storing one or more programs；
When one or more of programs are by one or more of computing devices so that one or more of processing
Device is realized host node device as described in above-mentioned first aspect is any or passed from node device in Modbus communication networks
The method of defeated message.
Fourth aspect, the embodiments of the invention provide a kind of computer-readable recording medium, is stored thereon with computer journey
Sequence, realized when the program is executed by processor such as the host node device as described in above-mentioned first aspect is any or from node device
The method of transmitting message in Modbus communication networks.
The embodiment of the present invention is defined multiple Modbus agreements and multiple host-host protocols by different code modules respectively,
The agreement framing module and transport module enabled during instantiation according to configuration information determination, realize Modbus protocol stacks flexible group
Close, solving needs to develop different protocol stacks for different agreements and different transmission means in the prior art, causes generation
The problem of code repetitive rate is high, reduce the implementation complexity and development difficulty of Modbus protocol stacks.It is and more with hardware device
The variation of sample and transmission means, when the new transmission means of appearance, it is only necessary to increase the code module of new transmission means i.e.
Can, reduce the redesign amount of code.
Brief description of the drawings
Fig. 1 is the flow chart of the method for transmitting message in Modbus communication networks that the embodiment of the present invention one provides；
Fig. 2 is the Modbus protocol stack module composition schematic diagrams that the embodiment of the present invention one provides；
Fig. 3 is the structural representation for the Modbus communication networks that the embodiment of the present invention two provides；
Fig. 4 is the structural representation for the equipment that the embodiment of the present invention three provides.
Embodiment
The embodiment of the present invention is described in further detail with reference to the accompanying drawings and examples.It is understood that this
The specific embodiment of place description is used only for explaining the embodiment of the present invention, rather than the restriction to the embodiment of the present invention.In addition also
It should be noted that for the ease of describing, the part related to the embodiment of the present invention rather than entire infrastructure are illustrate only in accompanying drawing.
Fig. 1 is the flow chart of the method for transmitting message in Modbus communication networks that the embodiment of the present invention one provides, and is had
Body comprises the following steps：
Step 101, the initialization module of host node device determine host node device according to the configuration information of host node device
In the agreement framing module that enables and transport module, and from the initialization module of node device according to the configuration from node device
Information determines the agreement framing module that is enabled from node device, wherein, each equipment include multiple agreement framing modules with it is more
Individual transport module, each agreement framing module define a kind of framing mode of Modbus protocol types and each agreement framing module
The framing mode of definition is different, and each transport module defines the transmission association that a kind of host-host protocol and each transport module define
Discuss different；
Modbus communication networks are an industrial communication systems, pass through public line or local special by controller and computer
Formed with connection, can be applied to various data acquisitions and process monitoring.The code of Modbus protocol stacks is except defining data
Framing, packing and analysis mode, the relevant information of packet sending and receiving is also defined, for example, for passing through Serial Port Transmission ModbusRTU
The Model Design of message realizes code, and code is realized for the Model Design that ModbusRTU messages are transmitted by Ethernet, for
Code is realized by the Model Design of Serial Port Transmission ModbusTCP messages, set for transmitting ModbusTCP messages by Ethernet
Meter realizes code.
The Modbus protocol types that Modbus communication networks are supported include ModbusRTU, ModbusTCP with
ModbusASCII, the host-host protocol of support include Serial Port Transmission, Ethernet transmission, GPRS transmission and ZigBee transmission, Ethernet
Transmission is divided into TCP transmission and UDP transmission.Each equipment in the present embodiment (host node device i.e. in Modbus communication networks and from
Node device) include multiple agreement framing modules and multiple transport modules, each agreement framing module defines a kind of Modbus
The framing mode that the framing mode of protocol type and each agreement framing module define is different, wherein, an agreement framing
The module definition framing mode of ModbusRTU agreements, for example, its code includes preparing to need the data sent：Application data
And CRC check, the data that packing, framing and parsing receive；Another agreement framing module defines ModbusTCP agreements
Framing mode, for example, its code includes preparing to need the data sent：Application data, packing, framing are (according to TCP form groups
Frame) and the data that receive of parsing；Also an agreement framing module defines the framing mode of ModbusASCII agreements.Often
It is different that individual transport module defines the host-host protocol that a kind of host-host protocol and each transport module define, wherein, a transmission
Module definition Serial Port Transmission agreement, for example, its code includes opening serial ports, specify Serial Port Information (baud rate, verification mode,
Data bit, stop position), serial ports is sent, and serial ports is received；Another transport module defines Ethernet host-host protocol, for example, its code
Including establishing connection (establishing connection according to IP and port), Ethernet is sent, and Ethernet is received；Another defines transport module
GPRS transmission agreement, also a transport module define ZigBee host-host protocols.
Configuration information results from the configuration that user is carried out to host node device and from node device in advance, including respectively setting
The standby protocol type and host-host protocol enabled, for example, user's selection is by the way of ModbusRTU agreements+Serial Port Transmission, then it is first
What is enabled during beginningization in each equipment is exactly transmission mould corresponding to agreement framing module corresponding to ModbusRTU agreements and Serial Port Transmission
Block.
Step 102, when agreement framing module that host node device enables obtains message to be transmitted, host node device enables
Agreement framing module according to the framing mode of this module definition by transmitting message framing, the message after framing includes purpose from section
Point device address, and by the transport module that host node device enables according to the host-host protocol of this module definition to from node device
Send the message after framing；
Host node device sends message to from node device, can generate transmitting message by high-rise (for example, application layer),
When the agreement framing module that host node device enables gets the transmitting message, the framing by the module according to this module definition
Mode is by transmitting message framing, for example, host node device enables agreement framing module corresponding to ModbusRTU agreements, the module
Purpose is carried according to the framing mode of ModbusRTU agreements by transmitting message framing, and in the message after framing from node
The address of equipment, the transport module that then host node device enables is according to the host-host protocol of this module definition by the report after the framing
Text is sent to from node device, for example, host node device enables transport module corresponding to Serial Port Transmission, the module passes according to serial ports
Defeated agreement sends message.
After step 103, the transport module enabled from node device receive the message after framing, send to from node device
The agreement framing module enabled, the analysis mode parsing group from the agreement framing module that node device enables according to this module definition
Message after frame.
The transport module periodic receipt data enabled from node device, after message after framing is received, Ye Shitong
Cross caching to do transfer and be transferred to the agreement framing module enabled from node device, the transport module enabled from node device will
Message after framing is put into caching, and the agreement framing module enabled from node device calls above-mentioned reading file interface from caching
The message after framing is extracted, is then parsed according to the analysis mode of this module definition.
The technical scheme of the present embodiment, in the design code of an equipment, by multiple Modbus agreements and multiple transmission
Agreement is defined by different code modules respectively, the agreement framing module and biography enabled in instantiation according to configuration information determination
Defeated module, the flexible combination of Modbus protocol stacks is realized, solve needs for different agreement and different in the prior art
Transmission means develops different protocol stack, the problem of causing code redundancies high, reduces the implementation complexity of Modbus protocol stacks
And development difficulty.And with the variation of hardware device and the variation of transmission means, when there is new transmission means, only need
Increase the code module of new transmission means, reduce the design iterations amount of code.
On the basis of above-mentioned technical proposal, Fig. 2 is the Modbus protocol stack modules composition that the embodiment of the present invention one provides
Schematic diagram, data transfer is completed between agreement framing module and transport module by calling interface, and this of host node device connects
Mouth for example including：
int(*write_file)(struct ClientTransmitInstance*transmit,uint8_t*
buffer,int length)；
int(*read_file)(struct ClientTransmitInstance*transmit,uint8_t*
buffer,int length)；
void(*close)(struct ClientTransmitInstance*transmit)。
Wherein, Write is written document function name, and ClientTransmitInstance*transmit is input initial
What the change stage created, uint8_t*buffer is the buffer pointers for needing to write, and intlength is write-in length length,
Return is actually written into length, if writing failure, returns to -1.
Wherein, to read documentation function name, ClientTransmitInstance*transmit is being initialized read for input
The transmit examples that stage creates, uint8_t*buffer are the buffer pointers for needing to read, and int length are reading
Length length, actual read-out length is returned to, if reading failure, return to -1.
Wherein, close is release resource function.
In the present embodiment, the agreement framing module that host node device enables is after by transmitting message framing, by calling
Write interfaces are stated, the buffer pointers write as needed and write-in length are put into the message after framing in caching buffer,
Then the transport module that host node device enables calls above-mentioned read interfaces, and the buffer pointers read as needed and reading are grown
Spend in caching buffer and extract the message after framing, the hardware of corresponding hardware is called further according to the host-host protocol of this module definition
Driving, to drive the message after the hardware transmission framing, for example, the information of transmission means is com1 in configuration information,
Host node device enables transport module corresponding to Serial Port Transmission, and the hardware driving of com1 ports is called according to Serial Port Transmission agreement,
To drive com1 ports to realize, serial ports method and serial ports are received.Accordingly, the transport module that host node device enables is according to host-host protocol
After calling the hardware driving of com1 ports to receive message, by calling above-mentioned write interfaces that the message of reception is put into caching
In, the agreement framing module that then host node device enables is by calling above-mentioned read interfaces to extract the report of reception into caching
Text, the message of reception is parsed further according to the analysis mode of this module definition.
On the basis of above-mentioned technical proposal, host node device is initialized in the initialization module of host node device
With the initialization module from node device to being initialized from node device after, in addition to：When what is enabled from node device
When agreement framing module obtains message to be transmitted, the framing from the agreement framing module that node device enables according to this module definition
For mode by transmitting message framing, the message after framing includes purpose host node device address, and by being enabled from node device
Transport module framing is sent to host node device according to the host-host protocol of this module definition after message；What host node device enabled
After transport module receives the message after framing, the agreement framing module that host node device enables is sent to, host node device opens
Agreement framing module parses the message after framing according to the analysis mode of this module definition.
As shown in Fig. 2 the Serial Port Transmission module that host node device enables is calling read interfaces to read framing from caching
After message afterwards, the hardware corresponding to serial ports that is configured according to the transmission means of Serial Port Transmission protocol definition and when calling initialization
Driving, message is sent to from node device.Equally, the Serial Port Transmission module that host node device enables is according to Serial Port Transmission agreement
Hardware driving corresponding to the transmission means of definition and the serial ports configured when calling initialization, receives the report sent from node device
Text, then, call write interfaces write-in caching.
As shown in Fig. 2 the GPRS transmission module that host node device enables is calling read interfaces to read framing from caching
After message afterwards, corresponding to the GPRS module that is configured according to the transmission means of GPRS transmission protocol definition and when calling initialization
Hardware driving, message is sent to from node device.Equally, the GPRS transmission module that host node device enables is according to Serial Port Transmission
Hardware driving corresponding to the transmission means of protocol definition and the GPRS module configured when calling initialization, is received from node device
The message of transmission, then, call write interfaces write-in caching.The transport module working method of other agreements is similar, no longer superfluous
State.
In the present embodiment, the method for message and the method class of above-described embodiment are sent from node device to host node device
Seemingly, here is omitted.
On the basis of above-mentioned technical proposal, in the agreement framing module enabled from node device according to this module definition
Framing mode by before transmitting message framing, in addition to：Carry out autonomous node when the transport module enabled from node device listens to
During the connection request of equipment, the transport module enabled from node device creates connection and hyphen with host node device
Handle_ID, and handle_ID is informed to the agreement framing module enabled from node device；The agreement enabled from node device
Framing module by handle_ID distinguish the message that receives from host node device, and by handle_ID to message
From host node device send feedback message.When the transport module enabled from node device is determined between host node device
During Joint failure, the resource of the transport module release connection enabled from node device will hyphen handle_ corresponding with connection
ID is set to closing, and informs that the agreement framing module handle_ID enabled from node device is closed.
It can also include in the interface from node device between agreement framing module and transport module：
int(*accpet_connection)(struct ServerTransmitInstance*transmit)；
Connection identifier handle_ID is distributed to new connection, inputs transmit examples, exports the handle_ID of distribution,
If without new connection, -1 is returned.
void(*close_handle)(struct ServerTransmitInstance*transmit,inthandle_
ID)；
Connection identifier handle_ID is set to closing, and input transmit examples are, it is necessary to the handle_ID closed.
Unlike host node device, need to monitor the instruction that multiple host node devices send from node device, when from
, it is necessary to create and the host node device when transport module that node device enables listens to the connection request from host node device
Connection, and by calling above-mentioned accpet_connection interfaces to create hyphen handle_ID；And work as from node device
When the transport module enabled determines the Joint failure between host node device, the transport module release enabled from node device should
The resource of connection, and by calling above-mentioned close_handle interfaces that handle_ID corresponding with the connection is set into closing.Phase
Answer, the agreement framing module enabled from node device is before above-mentioned write interfaces or read interfaces is called by calling
State accpet_connection interfaces and close_handle interfaces determine which current handle_ID is newly created, which is had
A little handle_ID can be used and which handle_ID has been closed, the agreement framing mould so enabled from node device
Block can is directed to the handle_ID that can be used and writes message into caching or extract message therefrom, due to Modbus nets
In network, host node device have it is multiple, from node device respectively with each host node device establish connect, from node device need pass through
Connection identifier handle_ID, which knows, to be received the message of main website from which connection and is known by connection identifier handle_ID
In which connection response message is sent out to main website.Handle_ID can be multiplexed in the present embodiment, if for example, handle_ID=5
It is closed, then next time, if new connection, then the handle_ID for distributing to the connection may be exactly 5.As for reality
Implication, for example, in tcp, it should be the socket of connection, then it is very possible different.Interface should shield this information, protocol groups
Frame module should be not felt by this information.
Fig. 3 is the structural representation for the Modbus communication networks that the embodiment of the present invention two provides, including：Host node device 11
With from node device 12, wherein, each equipment includes multiple agreement framing modules and multiple transport modules, each agreement framing mould
It is different that block defines the framing mode that a kind of framing mode of Modbus protocol types and each agreement framing module define, often
It is different that individual transport module defines the host-host protocol that a kind of host-host protocol and each transport module define；Wherein, the main section
Point device 11 is used for agreement framing module and the transport module for determining to enable according to configuration information by initialization module；It is described from
Node device 12 is used for agreement framing module and the transport module for determining to enable according to configuration information by initialization module；It is described
Host node device 11 is additionally operable to when the agreement framing module enabled by the host node device obtains message to be transmitted,
The transmission is reported according to the framing mode of this module definition by the agreement framing module that the host node device enables
Literary framing, the message after framing includes purpose from node device address, and the transmission enabled by the host node device
Module according to the host-host protocol of this module definition to it is described from node device send framing after message；It is described from node device 12
After being additionally operable to receive the message after the framing from node device by the transport module enabled, send to described
The agreement framing module enabled from node device, then pass through the agreement framing module root enabled from node device
The message after the framing is parsed according to the analysis mode of this module definition.
It is described to be additionally operable to enable from node device when by described from node device 12 on the basis of above-mentioned technical proposal
The agreement framing module obtain message to be transmitted when, pass through the agreement framing module root enabled from node device
According to the framing mode of this module definition by the transmitting message framing, the message after framing includes purpose host node device address,
And set by described from the transport module that node device enables according to the host-host protocol of this module definition to the host node
Preparation send the message after the framing；The host node device 11 is additionally operable to the transmission enabled by the host node device
After module receives the message after the framing, the agreement framing module that the host node device enables is sent to, then lead to
Cross after the agreement framing module that the host node device enables parses the framing according to the analysis mode of this module definition
Message.
On the basis of above-mentioned technical proposal, the Modbus that each equipment is used to be supported according to the Modbus communication networks is assisted
Discuss type and create the multiple agreement framing module, and according to the host-host protocol establishment that the Modbus communication networks are supported
Multiple transport modules, each equipment include the host node device 11 and described from node device 12.
It is described to be additionally operable to enable from node device when by described from node device 12 on the basis of above-mentioned technical proposal
Transport module when listening to the connection request from host node device, pass through the biography enabled from node device
The connection of defeated module creation and the host node device and hyphen handle_ID, and by the handle_ID inform it is described from
The agreement framing module that node device enables；Institute is passed through by the agreement framing module enabled from node device
State handle_ID distinguish the message that receives from host node device, and by the handle_ID to the message come
From host node device send feedback message.
It is described to be additionally operable to enable from node device when by described from node device 12 on the basis of above-mentioned technical proposal
The transport module determine and host node device between Joint failure when, pass through the biography enabled from node device
Defeated module discharges the resource of the connection, and hyphen handle_ID corresponding with the connection is set into closing, and informs described
Handle_ID described in the agreement framing module enabled from node device is closed.
On the basis of above-mentioned technical proposal, each equipment is used for the biography according to this module definition by the transport module enabled
Defeated agreement calls the hardware driving of corresponding hardware, to drive the message after the hardware transmission framing, each equipment bag
Include the host node device 11 and described from node device 12.
The Modbus communication networks that the embodiment of the present invention is provided can perform that any embodiment of the present invention provided
The method of transmitting message in Modbus communication networks, possess the corresponding functional module of execution method and beneficial effect.
Fig. 4 is the structural representation for the equipment that the embodiment of the present invention three provides, as shown in figure 4, the equipment can be above-mentioned
Host node device or include processor 20, memory 21, input unit 22 and output device from node device, the equipment
23；The quantity of processor 20 can be one or more in equipment, in Fig. 4 by taking a processor 20 as an example；Processing in equipment
Device 20, memory 21, input unit 22 can be connected with output device 23 by bus or other modes, with by total in Fig. 4
Exemplified by line connection.
Memory 21 is used as a kind of computer-readable recording medium, and journey is can perform available for storage software program, computer
Sequence and module, as corresponding to the method for transmitting message in Modbus communication networks in the embodiment of the present invention programmed instruction/
Module.Processor 20 is stored in software program, instruction and module in memory 21 by operation, so as to perform each of equipment
Kind application of function and data processing, that is, the method for realizing the above-mentioned transmitting message in Modbus communication networks.
Memory 21 can mainly include storing program area and storage data field, wherein, storing program area can store operation system
Application program needed for system, at least one function；Storage data field can store uses created data etc. according to terminal.This
Outside, memory 21 can include high-speed random access memory, can also include nonvolatile memory, for example, at least a magnetic
Disk storage device, flush memory device or other non-volatile solid state memory parts.In some instances, memory 21 can be further
Including network connection to equipment can be passed through relative to the remotely located memory of processor 20, these remote memories.It is above-mentioned
The example of network includes but is not limited to internet, intranet, LAN, mobile radio communication and combinations thereof.
Input unit 22 can be used for the numeral or character information for receiving input, and produce set with the user of equipment and
The relevant key signals input of function control.Output device 23 may include the display devices such as display screen.
The embodiment of the present invention four also provides a kind of computer-readable recording medium, and the storage medium may be disposed at above-mentioned main section
Point device or from node device, is stored thereon with computer program, is used to perform one kind when the program is executed by processor
The method of transmitting message in Modbus communication networks, this method is as described in above-mentioned embodiment of the method, and here is omitted.
Certainly, a kind of computer-readable recording medium that the embodiment of the present invention is provided, its computer executable instructions is not
It is limited to method as described above operation, can also carry out that any embodiment of the present invention provided passes in Modbus communication networks
Associative operation in the method for defeated message.
By the description above with respect to embodiment, it is apparent to those skilled in the art that, the present invention
Embodiment can be realized by software and required common hardware, naturally it is also possible to realized by hardware, but in many cases before
Person is more preferably embodiment.Based on such understanding, the technical scheme of the embodiment of the present invention is substantially in other words to existing skill
The part that art contributes can be embodied in the form of software product, and the computer software product can be stored in computer
In readable storage medium storing program for executing, floppy disk, read-only storage (Read-Only Memory, ROM), random access memory such as computer
(Random Access Memory, RAM), flash memory (FLASH), hard disk or CD etc., including some instructions are causing one
Computer equipment (can be personal computer, server, or network equipment etc.) performs each embodiment of the embodiment of the present invention
Described method.
It is worth noting that, in the embodiment of above-mentioned Modbus communication networks, included unit and module are
Divided according to function logic, but be not limited to above-mentioned division, as long as corresponding function can be realized；Separately
Outside, the specific name of each functional unit is also only to facilitate mutually differentiation, is not intended to limit the invention the protection of embodiment
Scope.
Pay attention to, above are only preferred embodiment and the institute's application technology principle of the embodiment of the present invention.Those skilled in the art
It will be appreciated that the embodiment of the present invention is not limited to specific embodiment described here, can carry out for a person skilled in the art each
The protection domain that kind significantly changes, readjusts and substituted without departing from the embodiment of the present invention.Therefore, although passing through the above
Embodiment is described in further detail to the embodiment of the present invention, but the embodiment of the present invention is not limited only to above implementation
Example, in the case where not departing from design of the embodiment of the present invention, other more equivalent embodiments can also be included, and the present invention is implemented
The scope of example is determined by scope of the appended claims.
Claims (14)
- A kind of 1. method of the transmitting message in Modbus communication networks, it is characterised in that including：The initialization module of host node device determines to open in the host node device according to the configuration information of the host node device Agreement framing module and transport module, and from the initialization module of node device according to the configuration from node device The agreement framing module enabled described in information determination from node device, wherein, each equipment includes multiple agreement framing modules With multiple transport modules, each agreement framing module defines a kind of framing mode of Modbus protocol types and each agreement framing The framing mode of module definition is different, and each transport module defines the biography that a kind of host-host protocol and each transport module define Defeated agreement is different；When the agreement framing module that the host node device enables obtains message to be transmitted, the host node device enables The agreement framing module according to the framing mode of this module definition by the transmitting message framing, the message after framing includes Purpose is from node device address, and the transmission by the transport module that the host node device enables according to this module definition Agreement to it is described from node device send the framing after message；After the transport module enabled from node device receives the message after the framing, send to described from node The agreement framing module that equipment enables, the agreement framing module enabled from node device is according to this module definition Analysis mode parse the message after the framing.
- 2. according to the method for claim 1, it is characterised in that the host node device initialization module to the master Node device carries out initialization and the initialization module from node device to described after node device initializes, Also include：It is described to be enabled from node device when the agreement framing module enabled from node device obtains message to be transmitted The agreement framing module according to the framing mode of this module definition by the transmitting message framing, the message after framing includes Purpose host node device address, and pass through the transmission from the transport module that node device enables according to this module definition Agreement send the framing to the host node device after message；After the transport module that the host node device enables receives the message after the framing, the host node is sent to The agreement framing module that equipment enables, the agreement framing module that the host node device enables is according to this module definition Analysis mode parse the message after the framing.
- 3. method according to claim 1 or 2, it is characterised in that the host node device initialization module to institute State host node device carry out initialization and the initialization module from node device initialized to described from node device Before, in addition to：The Modbus protocol types supported in each equipment according to the Modbus communication networks create the multiple agreement framing Module, and the host-host protocol supported according to the Modbus communication networks creates the multiple transport module, each equipment bag Include the host node device and described from node device.
- 4. according to the method for claim 2, it is characterised in that in the agreement framing mould enabled from node device Root tuber according to the framing mode of this module definition by before the transmitting message framing, in addition to：When the transport module enabled from node device listens to the connection request from host node device, it is described from The transport module that node device enables creates the connection and hyphen handle_ID with the host node device, and by institute State handle_ID and inform the agreement framing module enabled from node device；The message received from the agreement framing module that node device enables by handle_ID differentiations comes from Host node device, and by the handle_ID to the message from host node device send feedback message.
- 5. according to the method for claim 4, it is characterised in that methods described also includes：When the transport module that is enabled from node device determines the Joint failure between host node device, it is described from The transport module that node device enables discharges the resource of the connection, will hyphen handle_ corresponding with the connection ID is set to closing, and informs that handle_ID described in the agreement framing module enabled from node device is closed.
- 6. method according to claim 1 or 2, it is characterised in that the transport module enabled is according to the biography of this module definition Defeated agreement sends the message after the framing, including：The transport module enabled calls the hardware driving of corresponding hardware according to the host-host protocol of this module definition, to drive State hardware and send the message after the framing.
- A kind of 7. Modbus communication networks, it is characterised in that including：Host node device and from node device, wherein, in each equipment Including multiple agreement framing modules and multiple transport modules, each agreement framing module defines a kind of group of Modbus protocol types The framing mode that frame mode and each agreement framing module define is different, each transport module define a kind of host-host protocol and The host-host protocol that each transport module defines is different；Wherein, the host node device be used for by initialization module according to configuration information determine the agreement framing module that enables and Transport module；Agreement framing module and the transmission for being used to determine to enable according to configuration information by initialization module from node device Module；The host node device is additionally operable to when the agreement framing module acquisition enabled by the host node device is to be transmitted During message, by the agreement framing module that the host node device enables according to inciting somebody to action the framing mode of this module definition Transmitting message framing, the message after framing includes purpose from node device address, and the institute enabled by the host node device State transport module according to the host-host protocol of this module definition to it is described from node device send framing after message；It is described to be additionally operable to from node device after receiving the framing by the transport module enabled from node device Message after, send the agreement framing module enabled from node device to, then enabled from node device by described The agreement framing module message after the framing is parsed according to the analysis mode of this module definition.
- 8. Modbus communication networks according to claim 7, it is characterised in that described to be additionally operable to pass through from node device When the agreement framing module that is enabled from node device obtains message to be transmitted, enabled by described from node device For the agreement framing module according to the framing mode of this module definition by the transmitting message framing, the message after framing includes mesh Host node device address, and by it is described from the transport module that node device enables according to the transmission of this module definition assist Discuss the message after sending the framing to the host node device；After the transport module that the host node device is additionally operable to enable by the host node device receives the framing Message after, send the agreement framing module that the host node device enables to, then enable by the host node device The agreement framing module message after the framing is parsed according to the analysis mode of this module definition.
- 9. the Modbus communication networks according to claim 7 or 8, it is characterised in that each equipment is used for according to The Modbus protocol types that Modbus communication networks are supported create the multiple agreement framing module, and are led to according to the Modbus The host-host protocol that communication network is supported creates the multiple transport module, each equipment include the host node device and it is described from Node device.
- 10. Modbus communication networks according to claim 8, it is characterised in that described to be additionally operable to from node device when logical When crossing the transport module enabled from node device and listening to the connection request from host node device, by it is described from The transport module that node device enables creates the connection and hyphen handle_ID with the host node device, and by institute State handle_ID and inform the agreement framing module enabled from node device；Enabled by described from node device The agreement framing module by the handle_ID distinguish the message that receives from host node device, and pass through institute State handle_ID to the message from host node device send feedback message.
- 11. Modbus communication networks according to claim 10, it is characterised in that described to be additionally operable to from node device when logical When crossing the transport module that is enabled from node device and determining the Joint failure between host node device, by it is described from The transport module that node device enables discharges the resource of the connection, will hyphen handle_ corresponding with the connection ID is set to closing, and informs that handle_ID described in the agreement framing module enabled from node device is closed.
- 12. the Modbus communication networks according to claim 7 or 8, it is characterised in that each equipment is used for the biography by enabling Defeated module calls the hardware driving of corresponding hardware according to the host-host protocol of this module definition, to drive the hardware to send described group Message after frame, each equipment include the host node device and described from node device.
- 13. a kind of equipment, it is characterised in that the equipment includes：One or more processors；Storage device, for storing one or more programs；When one or more of programs are by one or more of computing devices so that one or more of processors are real Now the host node device as described in any in claim 1-6 or report is transmitted in Modbus communication networks from node device The method of text.
- 14. a kind of computer-readable recording medium, is stored thereon with computer program, it is characterised in that the program is by processor Host node device as described in any in claim 1-6 is realized during execution or from node device in Modbus communication networks The method of middle transmitting message.
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Application publication date: 20180410 Assignee: Kedong (Guangzhou) Software Technology Co., Ltd Assignor: Beijing Dongtu Technology Co., Ltd.|Beijing keyin Jingcheng Technology Co., Ltd Contract record no.: X2020980000255 Denomination of invention: Method for transmitting message in Modbus communication network, Modbus communication network and equipment License type: Exclusive License Record date: 20200218 |
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