CN111107100A - Equipment for transmitting industrial protocol flow message - Google Patents

Equipment for transmitting industrial protocol flow message Download PDF

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Publication number
CN111107100A
CN111107100A CN201911398045.8A CN201911398045A CN111107100A CN 111107100 A CN111107100 A CN 111107100A CN 201911398045 A CN201911398045 A CN 201911398045A CN 111107100 A CN111107100 A CN 111107100A
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module
message
client
server
industrial protocol
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CN201911398045.8A
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CN111107100B (en
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杨昀桦
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Hangzhou DPTech Technologies Co Ltd
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Hangzhou DPTech Technologies Co Ltd
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/22Parsing or analysis of headers
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00Network arrangements or protocols for supporting network services or applications
    • H04L67/01Protocols
    • H04L67/02Protocols based on web technology, e.g. hypertext transfer protocol [HTTP]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/26Special purpose or proprietary protocols or architectures

Abstract

The application provides equipment for transmitting an industrial protocol flow message, which is provided with two network cards configured into two IP addresses of the same network segment, a management module, a server module and a client module are loaded, the server module is bound with a first network card, and the client module is bound with a second network card; the management module respectively starts the client module and the service module; the client module is used for establishing connection with the server module, generating a first message based on a specified industrial protocol, sending the first message to the server module and analyzing a second message sent by the server module; the server module analyzes the first message from the client module, executes the first message, generates a second message based on a specified industrial protocol, and sends the second message to the client module. The method can generate the industrial protocol flow to be applied to the application scene of the non-industrial environment without copying the industrial field, and only one device is needed to realize the server-client architecture for generating the industrial protocol flow, so that the environment is simple and convenient to build.

Description

Equipment for transmitting industrial protocol flow message
Technical Field
The present application relates to the field of industrial protocol application technologies, and in particular, to an apparatus for transmitting an industrial protocol traffic packet.
Background
An industrial protocol is a communication protocol applied to industrial automation, including many messages and services, and the application scope is related to manufacturing automation. At present, the application scenarios of the industrial protocol are not only limited to the industrial environment, but also applicable to the laboratory environment of colleges and universities, safety equipment manufacturers and other application scenarios, for example, the generated industrial protocol flow is applied to the experimental equipment, and the industrial control safety equipment is subjected to protection testing and the like. Due to the particularities of industrial environments, it is relatively difficult and impractical to completely replicate an industrial site to apply the resulting industrial protocol traffic to other application scenarios. In the related art, the main method for generating the industrial protocol flow is to manually start simulator software of a client and a server on two computers respectively, connect an object needing the industrial protocol flow to pass between the client and the server in series, and perform related operations on the client or the server respectively, so as to generate a corresponding industrial protocol flow passing object.
However, each time of packet sending and receiving operations of the industrial protocol needs two computers, the client and the server need to be operated manually, the environment is complex to build, and the client and the server need to be updated on the two computers when the client and the server need to be updated and upgraded in the later period.
Disclosure of Invention
In order to overcome the problems in the related art, the application provides an industrial protocol flow generating device.
The embodiment of the application provides equipment for transmitting an industrial protocol flow message, wherein the equipment is provided with two network cards which are configured to be two IP addresses of the same network segment, the equipment is loaded with a management module, a server module and a client module, the server module is bound with a first network card, and the client module is bound with a second network card;
the management module is used for respectively starting the client module and the server module when receiving an industrial protocol flow generation instruction;
the client module is used for establishing connection with the server module, generating a first message based on the specified industrial protocol, sending the first message to the server module and analyzing a second message sent by the server module;
the server module is used for establishing connection with the client module, analyzing a first message from the client module, executing the first message, generating a second message based on the specified industrial protocol, and sending the second message to the client module.
In an exemplary embodiment, the device further includes a control module bound to the second network card, and the management module is further configured to start the client module when receiving an industrial control instruction;
the client module is further configured to generate a third message based on the specified industrial protocol, and send the third message to the control module, so that the control module controls the connected external device.
In an exemplary embodiment, the server module, the client module, and the control module are implemented using a scripting language.
In an exemplary embodiment, the device stores a server-side script and a client-side script of at least one industrial protocol.
In an exemplary embodiment, the device is further loaded with an extensible toolset module for implementing extended functions of the client module or the server module.
In an exemplary embodiment, the device further stores a database, and the database is used for the server module to read or write information corresponding to the function code from the database according to the function code obtained through analysis after receiving and analyzing the first message, and generate the second message based on the corresponding information and send the second message to the client module.
In an exemplary embodiment, the management module comprises a WEB component for providing an interface for human-computer interaction.
In an exemplary embodiment, the industrial protocol traffic generation instruction is input by a user through the WEB component.
In an exemplary embodiment, the device is further provided with a monitoring module, the monitoring module is configured to monitor message contents transmitted by the first network card and the second network card, and send a monitoring result to the management module, and the WEB component is further configured to visually display the monitoring result.
In an exemplary embodiment, the WEB component is further configured to receive configuration data input by a user for updating the functions of the client module or the server module.
The technical scheme provided by the embodiment of the application can have the following beneficial effects:
the device for transmitting the industrial protocol flow message in the technical scheme integrates a client and a server which are required by generating the industrial protocol flow into the same device in a mode of binding two network cards, the device which needs to use the industrial protocol flow can be respectively accessed with the network card of the client and the network card of the server in the device, a management module of the device starts a client module and a server module when receiving an industrial protocol flow generation instruction, the client module is connected with the server module and can send a first message to the server module based on the specified industrial protocol, the server module receives and analyzes the first message and executes the relevant operation of the first message and returns a second message to the client module, and the communication interaction process between the client module and the server module based on the specified industrial protocol generates the flow of the specified industrial protocol, the industrial protocol traffic can be applied to devices which are connected with the network card of the client and the network card of the server and need to use the industrial protocol traffic. Therefore, the application of the industrial protocol flow to the application scene of the non-industrial environment can be realized without copying an industrial field, and compared with the related technology, the technical scheme only needs one device to realize the server-client architecture for generating the industrial protocol flow, the environment is simple and convenient to build, and only one device needs to be updated when the client and the server need to be updated and upgraded in the later period, so that the convenience is improved.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.
Fig. 1 is a schematic structural diagram of a device for transmitting an industrial protocol traffic packet according to an exemplary embodiment of the present application.
Fig. 2 is a schematic structural diagram of another apparatus for transmitting an industrial protocol traffic packet according to an exemplary embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
It is to be understood that although the terms first, second, third, etc. may be used herein to describe various information, such information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present application. The word "if" as used herein may be interpreted as "at … …" or "when … …" or "in response to a determination", depending on the context.
The following describes in detail an apparatus for transmitting an industrial protocol traffic packet according to the present application with reference to the accompanying drawings. The features of the following examples and embodiments may be combined with each other without conflict.
Fig. 1 is a schematic structural diagram of an apparatus for transmitting an industrial protocol traffic packet according to an exemplary embodiment of the present disclosure. As shown in fig. 1, the device 10 for transmitting an industrial protocol flow message is loaded with a management module 110, a server module 120, and a client module 130, the management module 110 is respectively in communication connection with the server module 120 and the client module 130, the device is installed with two network cards (140, 150), the two network cards are configured as two IP addresses of the same network segment, the server module is bound with the first network card 140, the client module is bound with the second network card 150, for example, the IP address of the first network card bound with the server module is configured as 192.168.1.1/24, and the IP address of the second network card bound with the client module is configured as 192.168.1.2/24. The device can generate industrial protocol flow to be applied to external devices respectively connected with the two network cards through communication interaction between the server module and the client module.
The following describes the implementation of generating industrial protocol traffic through communication interaction between a server module and a client module:
the management module 110 is configured to respectively start the client module and the server module when receiving an industrial protocol traffic generation instruction;
the client module 130 is configured to establish a connection with the server module, generate a first message based on the specified industrial protocol, send the first message to the server module, and analyze a second message sent by the server module;
the server module 120 is configured to establish a connection with the client module, analyze a first packet from the client module, execute the first packet, generate a second packet based on the specified industrial protocol, and send the second packet to the client module.
The device for transmitting an industrial protocol flow message of this embodiment integrates a client and a server, which are required to generate an industrial protocol flow, into the same device in a form of binding two network cards, the device requiring the industrial protocol flow can be respectively accessed to the network card of the client and the network card of the server in the device, a management module of the device starts a client module and a server module when receiving an industrial protocol flow generation instruction, the client module establishes a connection with the server module and can send a first message to the server module based on a specified industrial protocol, the server module receives and analyzes the first message and executes a related operation of the first message and returns a second message to the client module, and a communication interaction process between the client module and the server module based on the specified industrial protocol generates a flow of the specified industrial protocol, the industrial protocol traffic can be applied to devices which are connected with the network card of the client and the network card of the server and need to use the industrial protocol traffic. Therefore, the application of the industrial protocol flow to the application scene of the non-industrial environment can be realized without copying an industrial field, and compared with the related technology, the technical scheme only needs one device to realize the server-client architecture for generating the industrial protocol flow, the environment is simple and convenient to build, and only one device needs to be updated when the client and the server need to be updated and upgraded in the later period, so that the convenience is improved.
In an exemplary embodiment of the present application, the two network cards may be wired network cards. In another exemplary embodiment of the present application, the two network cards may be wireless network cards.
In an exemplary embodiment of the present application, the device further includes a control module bound to the second network card, and the management module is further configured to start the client module when receiving an industrial control instruction; the client module is further configured to generate a third message based on the specified industrial protocol, and send the third message to the control module, so that the control module controls the connected external device.
In this embodiment, the device may be used as a client in an industrial control system besides a function of generating an industrial protocol flow, when a management module of the device receives an industrial control instruction, only the client module is started, the client module may generate a third message based on a specified industrial protocol, and send the third message to the control module, the control module is further bound with the second network card, and the control module may send the control instruction to a connected external device through the second network card to control the external device, thereby implementing industrial control. For example, a Programmable Logic Controller (PLC) or other devices are controlled.
In an exemplary embodiment of the present application, the server module, the client module, and the control module are implemented using a scripting language. Such as the python scripting language, etc.
In an exemplary embodiment of the application, the management module starts a server-side script and a client-side script of a specified industrial protocol by calling a Linux kernel system function.
In an exemplary embodiment of the present application, the device stores a server-side script and a client-side script of at least one industrial protocol. Therefore, the corresponding server-side script and client-side script or client-side script can be called according to the specified industrial protocol information carried in the industrial protocol flow generation instruction or according to the specified industrial protocol information carried in the industrial control instruction, so as to realize the operation corresponding to the instruction. That is, the device can support the generation of traffic of a plurality of industrial protocols, and can also support industrial control based on a plurality of industrial protocols.
In an exemplary embodiment of the application, the device further stores a database, and the database is used for the server module to read or write information corresponding to the function code from the database according to the function code obtained through analysis after receiving and analyzing the first message, and generate the second message based on the corresponding information and send the second message to the client module. The function code may indicate a purpose of the message of an industrial protocol, e.g., reading or writing. After the server module receives and analyzes the first message sent by the client module based on the industrial protocol, the server module can determine to read or write information corresponding to the function code from the database according to the analyzed function code. In this way, the device has a database that better simulates the internal memory location of an external device (e.g., industrial control device). For example, when the server module analyzes that the first message sent from the client module is a function code message with a read start address of 0 and a value of 1 in terms of the number of addresses, the server module queries the database for a value corresponding to 0 in the table corresponding to the industrial protocol, and generates a second message from the corresponding value and returns the second message to the client, thereby completing one interaction. In an exemplary embodiment of the present application, the database is a MySQL database.
In an exemplary embodiment of the present application, the server-side script and the client-side script are implemented by Python + Socket. For example, for the Modbus industrial protocol, according to the specification of the message protocol, the main fields in the message are function codes, starting addresses, the number of addresses and values, and these fields can be used as variables to be input, and then the contents of the message are packed by using the struct.pack function, and the message is sent to the server module by the socket.send function; the server module receives the data packet from the client module through the socket.recv function, disassembles the packet by using struct.unpack to obtain actual message content, and analyzes the content of the main field. For example, if the analyzed function code is a read-type function code, reading corresponding information from the MySQL database, converting the read information into corresponding field information according to a protocol specification, packaging the whole message according to a flow of sending a packet by the client module, and sending the packaged message to the client module, wherein the client module analyzes the message after receiving the message returned by the server module in the same way, and finally obtains the requested information to complete the whole message interaction process. If the type of the write function code is analyzed, the packet sending and receiving principle is the same, the operation is different only for the database, if the type of the write function code is the write function code, the initial address, the number of the addresses and the value of the write server are analyzed from the request message, and the corresponding value is written into the database at the designated position. In an exemplary embodiment of the application, a Python standard database interface Python DB-API is used for operating the database, and a MySQL database is referred to, so as to implement operations of adding, deleting, and modifying the database.
In an exemplary embodiment of the present application, the control module is an industrial protocol tool script library, and the industrial protocol tool script library may store at least one industrial protocol tool script, and is connected to an external device through a second network card, so that an industrial control operation may be performed quickly in an industrial environment. For example, S7 PLC control, S7 PLC asset information scanning, profinet dcp device IP configuration, etc.
In an exemplary embodiment of the present application, the device is further loaded with an extensible toolset module, which is used for implementing an extended function of the client module or the server module. For example, the user can load scripts of the customized extension functions to the extensible toolset module according to requirements so as to extend and update the client module and the server module.
In an exemplary embodiment of the application, the management module includes a WEB component, and the WEB component is used for providing an interface for human-computer interaction.
In an exemplary embodiment of the present application, the industrial protocol traffic generation instruction is input by a user through the WEB component. In this way, a user can select an industrial protocol traffic generation function using the device through the WEB component. It should be understood that the industrial control command can also be input by a user through a WEB component.
In an exemplary embodiment of the present application, the WEB component is further configured to receive configuration data input by a user and used for updating the functions of the client module or the server module. For example, a script for adding an extended function by a user can load an extensible toolset module through WEB component import. For example, a streaming socket (SOCK-STREAM), a datagram socket (SOCK-DGRAM) or a RAW socket (SOCK-RAW) can be used for communication, and the extensible tool set module is imported through a WEB component.
In an exemplary embodiment of the present application, the device is further loaded with a monitoring module, the monitoring module is configured to monitor message contents transmitted by the first network card and the second network card, and send a monitoring result to the management module, and the WEB component is further configured to visually display the monitoring result. And the user can conveniently check the message content through the interface of the WEB component. For example, the message contents transmitted by the first network card and the second network card can be written into a document through the TCP Dump parameter, five-tuple and application layer message information are separated from the content in the document by adopting regular matching, and the processed application layer message information is displayed on the interface of the WEB component by using Java.
In an exemplary embodiment of the present application, the monitoring module is further configured to monitor a packet sending result of the first network card and the second network card. Therefore, the connection state of the client module and the server module can be obtained from the package sending result, and the connection state can be visually displayed at the lowest price through WEB, so that a user can monitor the connection state in real time.
In an exemplary embodiment of the present application, the device is further equipped with a configuration module, and the configuration module may be used to configure an IP address of a network card, an interface of a WEB component, and the like.
Fig. 2 is a schematic structural diagram of another apparatus for transmitting an industrial protocol traffic packet according to an exemplary embodiment of the present application. As shown in fig. 2, the device 20 is equipped with a Linux system, in which a system management module 210, an industrial protocol transceiving module 220, and an industrial protocol extensible toolset module 230 are installed, the system management module 210 is communicatively connected to the industrial protocol transceiving module 220 and the industrial protocol extensible toolset module 230, respectively, and the industrial protocol transceiving module 220 is communicatively connected to the industrial protocol extensible toolset module 230. The device is equipped with two network cards configured as two IP addresses of the same network segment. Wherein:
the system management module 210 includes a monitoring sub-module 211, a system configuration sub-module 212, and a function configuration sub-module 213;
the industrial protocol transmitting and receiving module 220 comprises a service terminal module 221 and a client sub-module 222, wherein the service terminal module is bound with the first network card, and the client sub-module is bound with the second network card;
the industrial protocol extensible toolset module 230 comprises an industrial protocol client script library 231, an industrial protocol tool script library 232 and an extended script library 233.
Each module of this embodiment has the same function as the related module of the previous embodiment, and is not described herein again.
The foregoing description of specific embodiments of the present application has been presented. Other embodiments are within the scope of the following claims. In some cases, the actions or steps recited in the claims may be performed in a different order than in the embodiments and still achieve desirable results. In addition, the processes depicted in the accompanying figures do not necessarily require the particular order shown, or sequential order, to achieve desirable results. In some embodiments, multitasking and parallel processing may also be possible or may be advantageous.
Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the application being indicated by the following claims.
It will be understood that the present application is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the application is limited only by the appended claims.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as within the scope of the present disclosure as long as there is no contradiction between the combinations of the technical features.
The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the scope of protection of the present application.

Claims (10)

1. A device is used for transmitting an industrial protocol flow message and is characterized in that the device is provided with two network cards which are configured to be two IP addresses of the same network segment, the device is provided with a management module, a server module and a client module, the server module is bound with a first network card, and the client module is bound with a second network card;
the management module is used for respectively starting the client module and the server module when receiving an industrial protocol flow generation instruction;
the client module is used for establishing connection with the server module, generating a first message based on the specified industrial protocol, sending the first message to the server module and analyzing a second message sent by the server module;
the server module is used for establishing connection with the client module, analyzing a first message from the client module, executing the first message, generating a second message based on the specified industrial protocol, and sending the second message to the client module.
2. The device of claim 1, further comprising a control module bound to the second network card,
the management module is also used for starting the client module when receiving an industrial control instruction;
the client module is further configured to generate a third message based on the specified industrial protocol, and send the third message to the control module, so that the control module controls the connected external device.
3. The apparatus of claim 2, wherein the server module, the client module, and the control module are implemented using a scripting language.
4. The apparatus of claim 3, wherein the apparatus stores a server-side script and a client-side script for at least one industrial protocol.
5. The device of claim 1, further loaded with an extensible toolset module for implementing extended functionality of the client module or the server module.
6. The device according to claim 1, wherein the device further stores a database, and is configured to, after the server module receives and parses the first packet, read or write information corresponding to the function code from the database according to the function code obtained through parsing, and generate the second packet based on the corresponding information, and send the second packet to the client module.
7. The device of claim 1, wherein the management module comprises a WEB component for providing an interface for human-computer interaction.
8. The apparatus of claim 7 wherein the industrial protocol traffic generation instructions are entered by a user via the WEB component.
9. The device according to claim 7, wherein the device is further loaded with a monitoring module, the monitoring module is configured to monitor message contents transmitted by the first network card and the second network card, and send a monitoring result to the management module, and the WEB component is further configured to visually display the monitoring result.
10. The apparatus of claim 7 wherein the WEB component is further configured to receive user input configuration data for updating the functionality of the client module or the server module.
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