KR20160141965A - Profibus Communication System - Google Patents

Profibus Communication System Download PDF

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Publication number
KR20160141965A
KR20160141965A KR1020150077691A KR20150077691A KR20160141965A KR 20160141965 A KR20160141965 A KR 20160141965A KR 1020150077691 A KR1020150077691 A KR 1020150077691A KR 20150077691 A KR20150077691 A KR 20150077691A KR 20160141965 A KR20160141965 A KR 20160141965A
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KR
South Korea
Prior art keywords
communication
module
configuration information
setting tool
master device
Prior art date
Application number
KR1020150077691A
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Korean (ko)
Inventor
도필환
Original Assignee
엘에스산전 주식회사
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Application filed by 엘에스산전 주식회사 filed Critical 엘에스산전 주식회사
Priority to KR1020150077691A priority Critical patent/KR20160141965A/en
Publication of KR20160141965A publication Critical patent/KR20160141965A/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/40—Bus networks
    • H04L12/40006—Architecture of a communication node
    • 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
    • H04L2012/40221—Profibus

Abstract

A profibus communication system according to an embodiment of the present invention comprise: a communication setting tool setting communication of the profibus communication system; a master device carrying out the communication with a slave device according to a control signal of the communication setting tool and requesting a diagnostic data to the slave device; and the slave device transmitting system configuration information of the profibus communication system to the master device in response to the diagnostic data requesting of the master device, wherein the master device receives the system configuration information from the slave device and transmits the received configuration information to the communication setting tool, and the communication setting tool may receive and display the system configuration information.

Description

Profibus Communication System [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a PROFIBUS communication system, and more particularly, to a PROFIBUS communication system for diagnosing a system using Extended Diagnostic Data of a PROFIBUS protocol.

PROFIBUS is an abbreviation of Process Field Bus and is a field bus jointly developed by Bosch, Klockener-Moeller and Siemens in Germany. It is standardized as German Standard DIN 19 245, European Standard EN 50 170 and International Standard IEC 61158, It is a standard industrial communication protocol.

PROFIBUS is used for real-time communication between field devices in fields of production automation, process control, and building automation. Depending on the application, PROFIBUS-FMS (Fieldbus message Specification) for general automation, PROFIBUS-DP (Decentralized Periphery), and PROFIBUS-PA (Process Automation) used for process control automation. Profibus-DP, which is generally used for factory automation, is the most widely used.

Profibus-DP is an open industrial network that uses layers corresponding to the physical layer, the data link layer, and the user layer, and is designed so that the user can configure many functions through the user layer in order to optimize the performance. The physical layer mainly uses RS-485, but it also supports optical fiber and uses a specific transmission line that is strong against noise to protect the industrial site.

The network of the PROFIBUS-DP is composed of a master device and a plurality of slave devices for inputting and outputting data, and the communication between the master device and the slave devices is performed by a network setting (network configuration) information. The network setting information includes information on communication speed, input / output data, and the like of a plurality of slave devices to communicate with the master device of PROFIBUS-DP.

A communication setting tool is used for the network setting, and the room setting tool registers and uses the master device and the slave device in advance. In this case, there are integrated module and dedicated communication module. If all modules are used, it is possible to grasp at a glance the type of slave and its purpose in the communication setting tool. However, when a communication-dedicated module is used, it is not indicated in which system the module is configured. Therefore, the user has to search for a pre-written system configuration diagram or search for a place where the system is installed.

SUMMARY OF THE INVENTION The present invention has been proposed in order to solve the problems of the prior art as described above, and it is an object of the present invention to provide a PROFIBUS communication system in which all system configurations of a PROFIBUS communication system can be confirmed by a communication setting tool.

According to an aspect of the present invention, there is provided a PROFIBUS communication system comprising: a communication setting tool for setting communication of a PROFIBUS communication system; A master device communicating with the slave device according to a control signal of the communication setting tool and requesting the slave device for diagnostic data; And a slave device for transmitting system configuration information of the PROFIBUS communication system to the master device in response to a request for diagnostic data of the master device, wherein the master device receives the system configuration information from the slave device, And the communication setting tool can receive and display the system configuration information.

Wherein the slave device comprises: a CPU module for performing overall operations of the PROFIBUS communication system by performing an arithmetic operation according to a program stored in advance; A slave module including a necessary diagnostic data storage unit and an extended diagnosis data storage unit; And a plurality of expansion modules attached in series to the CPU module.

The system configuration information may include at least one of module related information including the location and type of the CPU module, the slave module, and the extension module.

The CPU module may include a module configuration storage unit for receiving and storing the system configuration information.

The extended diagnosis data storage unit may receive the system configuration information from the CPU module and store the system configuration information.

The communication setting tool may include a diagnostic data analyzer for analyzing the extended diagnostic data received from the master device and analyzing the types and order of modules constituting the system; An image generation unit configured to configure a whole image of a system to be displayed on a screen by using data analyzed by the diagnostic data analysis unit; And a display unit for displaying the image generated by the image generating unit.

Further, a diagnostic method of a PROFIBUS communication system according to an embodiment of the present invention

A diagnostic method of a PROFIBUS communication system comprising a master device and a plurality of slave devices communicating with the master device,

The master device sending a diagnosis request signal to the slave device; The slave device sending system configuration information to the master device in response to the diagnostic request signal; Receiving the system configuration information from the master device and transmitting the received system configuration information to a communication setting tool; And the communication setting tool may analyze the system configuration information and display the analyzed system configuration information on a screen.

The system configuration information may include at least one of module related information including the location and type of the CPU module, the slave module, and the extension module.

The step of transmitting the system configuration information to the master device may transmit the system configuration information stored in the extended diagnosis data storage of the slave device.

The step of displaying on the screen analyzing the extended diagnosis data from the master device and analyzing the types and order of modules constituting the system; Constructing an entire image of the system displayed on the screen using the analyzed data; And displaying the generated image.

According to the embodiment of the present invention, all the slave systems connected to the network can be identified on the PROFIBUS-DP communication setting tool.

Therefore, the user can write the program without needing to create the system diagram or check the module directly, and the communication system configuration time can be shortened.

1 is a view for explaining a conventional network setting concept.
2 is a diagram showing a sequence of a conventional network setting operation.
3 is a block diagram of a PROFIBUS communication system according to an embodiment of the present invention.
FIG. 4 illustrates an example of extended diagnostic data according to an embodiment of the present invention.
5 is a detailed block diagram of the communication setting tool 100 of FIG.
6 is a flowchart illustrating a diagnostic method of a PROFIBUS communication system according to an exemplary embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. The following detailed description is merely an example, and is merely an example of the present invention. Further, the principles and concepts of the present invention are provided for the purpose of being most useful and readily explaining.

Accordingly, it is not intended to provide a more detailed structure than is necessary for a basic understanding of the present invention, but it should be understood by those skilled in the art that the present invention can be embodied in various forms.

1 is a diagram for explaining a network setting concept of a conventional PROFIBUS DP. Here, reference numeral 30 denotes a master device, and reference numeral 42 denotes a plurality of slave devices. The master device 30 and the plurality of slave devices 42 are connected to the PROFIBUS 40 and are configured to transmit predetermined data to each other.

Reference numeral 20 denotes a communication setting tool. The communication setting tool 20 performs the network setting operation of the master device 30.

2 is a diagram showing a sequence of a conventional network setting operation. Referring to FIG. 2, in order to set the network of the PROFIBUS DP (hereinafter referred to as "PROFIBUS"), the user 10 first confirms network setting information of a plurality of slave devices 42 (S200). For example, network configuration information including address, communication speed information, and input / output data of a plurality of slave devices 42 is confirmed.

At this time, the user 10 may directly move to the installation place of the plurality of slave devices 42 to check the network setting information.

Then, the user 10 inputs the network setting information to the communication setting tool 20 (S202), and requests the application of the inputted network setting information when the input of the network setting information is completed (S204).

Then, the communication setting tool 20 transmits the network setting information to the master device 30 (S206). In this state, the user 10 requests the setting tool 20 to start network communication (S208). Then, the setting tool 20 requests the master device 30 to apply the communication start (S210), and the master device 30 transmits the request to the slave device 42, Based on the network setting information, through the PROFIBUS 40 (S212). The master device 30 stores communication setting data such as the slave station number and the size of the communication data. Therefore, when there is a communication start request from the communication setting tool 20, the master device 30 and the slave device 42 exchange communication data and diagnosis data of a predetermined size under the control of the master device 30. [

At this time, the diagnostic data is transmitted to the communication setting tool 20 through the master device 30 (S214).

The communication setting tool 20 uses the diagnostic data to display the current status of the slave module 42 on the screen.

The communication setting tool 20 registers and uses the master device 30 and the slave device 42 in advance. At this time, the slave device 42 may be a dedicated communication module that includes both a communication function and an input / output function and operates independently, and a dedicated communication module that uses a CPU and various extension modules according to the system. If the slave module is an integral type, it can be seen at a glance in the communication setting tool at a glance. However, in the case of a dedicated communication module, only the information of the module is displayed without indicating which system the module is configured in. Therefore, if multiple units of the same model are connected on the network, they are all displayed as the same image so that the user can not know the configuration information of the system. To check the configuration information, .

FIG. 3 illustrates a configuration of a PROFIBUS communication system according to an embodiment of the present invention.

Referring to FIG. 3, the PROFIBUS communication system includes a communication setting tool 100, a master device 200, and a slave device 300.

The communication setting tool 100 not only controls the master device 200 according to the network setting by the user's operation but also transmits the diagnosis request signal to the master device 200, Receives the signal and displays it on the screen. Therefore, the user can confirm the configuration of the communication system by checking the screen of the communication setting tool 100. [ The communication setting tool 100 may be installed in a computer. The communication setting tool 100 includes a diagnostic data analysis unit 110, an image generation unit 120, and a display unit 130, the details of which will be described later.

The master device 200 includes a CPU module 210 and a master module 220. The CPU module 210 performs an arithmetic operation according to a program stored in advance, and the master module 220 performs communication under the control of the CPU module 210. [

The slave device 300 includes a CPU module 310, a slave module 320, an input / output module 330, an A / D conversion module 340, and a motor speed detection module 350. That is, the slave device 300 includes a module other than the slave module 320. The CPU module 310 performs an arithmetic operation according to a previously stored program and controls the overall operation of the PLC system and the PROFIBUS communication system. And controls the operation of the slave module 320 and the other extension modules 330, 340, and 350. In addition, various modules can be installed depending on the purpose. The AD conversion module 340 converts an analog signal into a digital signal. The motor speed detection module 350 is a module for detecting the speed and position of the motor. It is called a hight speed counter (HSC).

The CPU module 310 includes a module configuration data storage unit 312 for receiving and storing information such as the location and type of all the extension modules including the slave module 320.

The slave module 320 includes a required diagnostic data storage unit 322 for storing essential diagnostic data and an extended diagnostic data storage unit 324 for storing extended diagnostic data.

The essential diagnostic data is defined in the PROFIBUS standard, and is literally data to be transmitted literally, such as an operation setting of the slave module, a master station number, and a slave unique number. The slave unique number refers to the unique number assigned to the slave model by the Profibus Association.

In this embodiment, the configuration information of the PLC (programmable logic controller), the location and type of the CPU module and each extension module, etc. are stored in the extended diagnostic data area. Information about. That is, in the essential diagnostic data storage unit 322, the master station number and the slave unique number are stored. In the extended diagnosis data storage unit 324, the type of CPU module, the type of the slave module, Is stored.

4 shows the configuration of the extended diagnostic data stored in the extended diagnostic data. As shown in the figure, the extended diagnosis data includes information on the CPU module, the slave, the input / output module, the AD conversion module, and the motor speed and position detection module.

5 is a detailed configuration diagram of the communication setting tool 100. As shown in FIG.

The communication setting tool 100 includes a diagnostic data analysis unit 110, an image generation unit 120, and a display unit 130.

The diagnosis data analyzing unit 110 receives the extended diagnosis data from the master device 200 and analyzes the extended diagnosis data to identify the type of the CPU module 310, the slave module 320, and other extension modules of the slave device 300 Check the order and the modules that make up the system. The image generating unit 120 forms an entire image of the system to be displayed on the screen using the image of the module previously stored in the communication setting tool and the analyzed data, and the display unit 130 displays the image on the screen . The image configuration is configured so that the connection between the master device and the slave device and the types and order of the modules constituting the slave device are displayed as shown in the figure.

Hereinafter, the operation of the PROFIBUS communication system will be described.

First, when the user inputs a diagnostic command through an input unit (not shown) of the PROFIBUS communication setting tool, the communication setting tool 100 transmits a diagnostic request signal to the master device 200, and the master device 200 transmits the diagnostic request signal to the slave device 300). The slave device 300 transmits essential diagnostic data and extended diagnostic data stored in the storage units 322 and 324 to the master device 200. The master device 200 transmits the extended diagnostic data to the communication setting tool 100, And the communication setting tool 100 analyzes the type and position of the modules constituting the system to form an image and displays the image on the screen. Therefore, the user can easily identify the type and position of the module by checking the extended diagnosis data displayed on the screen without creating a system diagram or directly checking the module.

6 is a flowchart illustrating a diagnostic method of a PROFIBUS communication system according to an embodiment of the present invention.

First, the communication setting tool generates a diagnosis request signal according to a user's request (S60). The diagnostic request signal is transmitted to the master device (S61), and the master device requests the diagnostic data to the slave device again.

In response to the request for the diagnostic data, the slave device transmits the essential diagnostic data and the extended diagnostic data stored in the slave module to the master device (S62).

The communication setting tool analyzes the received extended diagnostic data and confirms the positions and types of the modules constituting the slave device (S63). After the analyzed data having been analyzed is used, a total image of the communication system is constructed (S64) and displayed on the screen (S65).

While the exemplary embodiments of the present invention have been described using specific terms, such description is for illustrative purposes only, and it is to be understood that the invention is not limited to the disclosed embodiments. And various alternatives, modifications, and alterations can be made within the scope.

Therefore, the embodiments described in the present invention and the accompanying drawings are intended to illustrate rather than limit the technical spirit of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments and accompanying drawings . The scope of protection of the present invention should be construed according to the claims, and all technical ideas within the scope of equivalents should be interpreted as being included in the scope of the present invention.

100: communication setting tool 110: diagnostic data analysis unit
120: image generating unit 130: display unit
200: master device 300: slave device
310: CPU module 320: Slave module
330: I / O module 340: AD conversion module
350: HSC module

Claims (6)

A communication setting tool for setting communication of the PROFIBUS communication system;
A master device communicating with the slave device according to a control signal of the communication setting tool and requesting the slave device for diagnostic data; And
And a slave device for transmitting system configuration information of the PROFIBUS communication system to the master device in response to a request for diagnostic data of the master device,
Wherein the master device receives the system configuration information from the slave device and transmits the system configuration information to the communication setting tool,
And the communication setting tool receives and displays the system configuration information.
3. The apparatus according to claim 2, wherein the slave device
A CPU module for performing overall operation of the PROFIBUS communication system by performing an arithmetic operation according to a program stored in advance;
A slave module including a necessary diagnostic data storage unit and an extended diagnosis data storage unit; And
And a plurality of expansion modules attached in series to the CPU module.
The system according to claim 2, wherein the system configuration information
And module related information including a position and a type of the CPU module, the slave module, and the extension module.
The apparatus of claim 2, wherein the CPU module
And a module configuration storage unit for receiving and storing the system configuration information.
5. The method of claim 4,
Wherein the extended diagnosis data storage unit receives the system configuration information from the CPU module and stores the system configuration information.
The communication system according to claim 1, wherein the communication setting tool
A diagnostic data analysis unit for analyzing the extended diagnosis data received from the master device and analyzing the types and order of modules constituting the system;
An image generation unit configured to configure a whole image of a system to be displayed on a screen by using data analyzed by the diagnostic data analysis unit; And
And a display unit for displaying the image generated by the image generation unit.


KR1020150077691A 2015-06-02 2015-06-02 Profibus Communication System KR20160141965A (en)

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