KR102050312B1 - Supporting method, apparatus and computer-readable medium of multi communication type and protocol between systems using embedded cpu included in programmable logic controller - Google Patents

Abstract

Provided is a technology, which uses an embedded CPU included in a PLC or the like essentially installed between upper and lower systems of an automatic control system to replace a function of the existing gateway, and supports a multi-communication mode and a multi-communication protocol to be adaptive with only the program settings, thereby enabling cost loss and universal use. In order to achieve the above purpose, according to one embodiment of the present invention, the method for supporting multi-communication and multi-protocol between systems using an embedded CPU included in the PLC comprises a project generation step, a first setting step, a second setting step, a third setting step, a first verification step, a fourth setting step, a fifth setting step, a second verification step, and a program installation step.

Description

SUPPORTING METHOD, APPARATUS AND COMPUTER-READABLE MEDIUM OF MULTI COMMUNICATION TYPE AND PROTOCOL BETWEEN SYSTEMS USING EMBEDDED CPU INCLUDED IN PROGRAMMABLE LOGIC CONTROLLER}

The present invention is a communication system between an upper system such as a HMI (Human Machine Interface) and an instrument, a control terminal, and other PLCs and sub-systems such as a digital to digital converter in an automatic control system in a field to which a programmable logic controller (PLC) is applied. It is to transfer sensing data from the lower system to the upper system by intermediating the control system, or to transmit control commands from the upper system to the lower system. Specifically, it is different depending on the communication method, communication protocol, and programming language applied differently according to each site. The present invention relates to a technology that supports communication for all communication and multi-protocols using an embedded CPU inside a PLC without applying a gateway.

The automatic control system refers to a system that performs control while changing the state of the system automatically within a preset value range of the devices to be controlled. To this end, the automatic control system becomes a control target and operates according to a control command and receives a sensing value from the subsystem and a sub system that refers to various equipments for measuring the control result or the surrounding environmental value required for control. It is configured to include a higher level system for performing monitoring and measurement on the system, generating control commands according to a set range or input values, and transmitting the control commands to the lower level system to perform control on the lower level system.

The upper system and the lower system constitute a server-client system to establish an automatic control system that automatically transmits and receives data between each system and automatically controls complex facilities. For example, remote monitoring functions such as substations, water purification plants, sewage treatment plants, and pump stations are provided. Build a system that includes

The automatic control system acquires the data of the module of the field cable or the protocol installed in the field equipment belonging to the lower system, and performs the automatic control of the subsystem by the control of the upper system such as HMI (Human Machine Interface). . Currently applied automatic control systems are operating by separately installing different communication gateways and protocol conversion gateways in the application of communication methods and communication protocols according to different communication environments and protocols different from those of lower systems and upper systems.

As a representative example, Korean Patent No. 10-0900882 et al. Discloses a technology for a gateway device adaptable to such different communication protocols. It includes technical features that allow gateway devices to convert different protocols from one another.

However, even in this case, since there is no choice but to install and operate a separate gateway separately, the problem of cost loss and the cumbersome operation is necessarily generated.

The present invention is to solve the above problems, using the embedded CPU included in the PLC, which is essentially installed between the upper and lower systems of the automatic control system to replace the function of the existing gateway, multiple communication method and multi communication The purpose of this program is to provide a technology capable of supporting loss of cost and general use by adaptively supporting the protocol by setting a program.

In order to achieve the above object, a multi-communication and multi-protocol support method between systems using an embedded CPU included in a PLC according to an embodiment of the present invention includes one or more processors and one or more memories for storing instructions executable by the processor. The present invention relates to a method for supporting multi-communication and multi-protocol between systems using an embedded CPU included in a PLC implemented as a computing device including an initial stage through a program tool driven in an embedded CPU module implemented in a PLC including the computing device. A project generation step of generating a first program for automatic control for each system according to an input; The embedded CPU module and the sub-system in accordance with a first input from an input means for a first communication scheme and a first protocol setpoint as a communication scheme and a protocol setpoint for data transmission and reception between the embedded CPU module and the subsystem; A first setting step of generating a first communication port and a first protocol which is a communication port and a protocol of the first protocol, and storing the first protocol in the first program; A second setting step of setting a variable for collecting data of the subsystem and a communication period for updating data; A third setting step of configuring logic according to an automatic control condition of a subsystem through the program tool and substituting real-time and virtual variables corresponding to the condition of the configured logic; A first verifying step of verifying integrity of the first program through compilation and virtual simulation of the first program after completion of the third setting step; According to the second input from the input means for the second communication method and the second protocol setting value as a communication method and protocol setting value for data transmission and reception between the embedded CPU module and the upper system, A fourth setting step of generating a second communication port and a second protocol, which are communication ports and protocols of the second protocol, and storing them in the first program; A fifth setting step in which the upper system goes through a process for setting data management criteria for collecting and managing data of the lower system; A second verifying step of verifying integrity of the first program through compilation and virtual simulation of the first program after completion of the fifth setting step; And a program installation step of downloading the first program whose integrity is confirmed by the second verifying step from the program tool to the embedded CPU through a network.

In the project generation step, it is preferable to select a program language corresponding to a system-specific environment according to an input by an input means.

The second setting step may include: a first storing step of generating a variable for collecting data of a subsystem, setting a variable type of a data tag type and storing the variable type in a program tool; And setting a first communication period for data update of the lower system, but setting a first communication period shorter than a second communication period, which is a data collection period for requesting a higher system set in advance for each specification of the upper system. It is preferable to include.

The first verifying step may be performed by compiling a first program configured according to completion of the third setting step by using the data tag type, the real-time variable, and the virtual variable of the sub-system. A first compilation step of testing whether the operation is normal; A first debugging step of performing debugging by entering a root of a first program in which an error occurs when an error occurs according to the progress of the first compilation step; And a first verification completion step of confirming integrity of the first program by controlling the logic and the value of each data configured in the third setting step by using the virtual simulation function in the program tool after performing the first debugging step. It is preferable to include;

In the fifth setting step, the data tag type with the lower system stored in the program tool may be mapped to the data tag type and real time data requested by the upper system by the second setting step.

The second verifying step may be performed by compiling a first program configured according to completion of the fifth setting step by using a data tag type, the real time variable, and the virtual variable with the upper system. A second compilation step of testing whether the program operates normally; A second debugging step of performing debugging by entering a root of a first program in which an error occurs when an error occurs according to the progress of the second compilation step; And verifying the integrity of the first program by controlling the logic and the value of each data configured in the first to fifth setting steps using a virtual simulation function in the program tool after performing the second debugging step. Comprising a second verification step; preferably.

Preferably, the upper system is a system in which a human machine interface (HMI) for monitoring the operation of at least the lower system and controlling the operation of the lower system is implemented.

The sub-system is preferably a system composed of at least a device operated in the field system, a device for measuring the field system, a programmable logic controller (PLC) and a digital to digital controller (DDC) for a device of the field system.

An apparatus for supporting multi-communication and multi-protocol between systems using an embedded CPU included in a PLC according to an embodiment of the present invention may be implemented as a computing device including at least one processor and at least one memory storing instructions executable by the processor. The present invention relates to an apparatus for supporting multi-communication and multi-protocol between systems using an embedded CPU included in a PLC, wherein the system-specific automatic control is performed according to an initial input through a program tool driven in an embedded CPU module implemented in a PLC including the computing device. Project generation unit for generating a first program for; The embedded CPU module and the sub-system in accordance with a first input from an input means for a first communication scheme and a first protocol setpoint as a communication scheme and a protocol setpoint for data transmission and reception between the embedded CPU module and the subsystem; A first setting unit for generating a first communication port and a first protocol and a first protocol of the communication port and a protocol, and storing the first protocol in the first program, a variable for collecting data of a subsystem, and a second setting for setting a communication period for updating data A sub-setting unit including a third setting unit configured to configure logic according to an automatic control condition of a sub-system through the program tool, and substitute real-time variables and virtual variables corresponding to the configured logic conditions; A subsystem verification unit for verifying integrity of the first program through compilation and virtual simulation of the first program after performing the function of the subsystem setting unit; According to the second input from the input means for the second communication method and the second protocol setting value as a communication method and protocol setting value for data transmission and reception between the embedded CPU module and the upper system, A fourth setting unit for generating and storing a second communication port and a second protocol, which are communication ports and protocols, in the first program, and a process for setting data management criteria for the upper system to collect and manage data of a lower system An upper system setting unit including a fifth setting unit configured to proceed; An upper system verifying unit verifying the integrity of the first program through compilation and virtual simulation of the first program after performing the function of the upper system setting unit; And a program installation unit for downloading the first program whose integrity is confirmed by the upper system verification unit from the program tool to the embedded CPU through a network.

According to the present invention, even if an embedded CPU included in a PLC in charge of communication between a higher system and a lower system uses a program tool executed by the CPU or a separate terminal, the communication method and communication protocol between the systems are different. By creating a project that is adaptable to this, and setting the control logic and communication method and communication protocol between each system and verifying the integrity thereof, there is no need to install a separate gateway matching each communication method and communication protocol. It is possible to cope with all communication methods and communication protocols without need.

As a result, the corresponding cost is greatly reduced in the communication between the multiple communication methods and the multi-protocol for the control, measurement, and monitoring between the systems of the automatic control system through the lower system and the upper system, and easily with only one program tool. It is possible to operate.

1 to 4 are flowcharts of a method for supporting multi-communication and multi-protocol between systems using an embedded CPU included in a PLC according to an embodiment of the present invention.
5 is a schematic configuration diagram of an automatic control system in which the present invention is implemented.
6 to 8 are configuration block diagrams of all or a part of components of a multi-communication and multi-protocol supporting apparatus between systems using an embedded CPU included in a PLC according to each embodiment of the present invention.
FIG. 9 is a view for explaining an example in which a system using an embedded CPU included in a PLC according to an embodiment of the present invention is applied. FIG.
10 is an example of an internal configuration of a computing device according to an embodiment of the present invention.

In the following, various embodiments and / or aspects are now disclosed with reference to the drawings. In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of one or more aspects. However, it will also be appreciated by one of ordinary skill in the art that this aspect (s) may be practiced without these specific details. The following description and the annexed drawings set forth in detail certain illustrative aspects of the one or more aspects. However, these aspects are exemplary and some of the various methods in the principles of the various aspects may be used and the descriptions described are intended to include all such aspects and their equivalents.

As used herein, “an embodiment”, “an example”, “aspect”, “an example”, and the like, may not be construed that any aspect or design described is better or advantageous than other aspects or designs. .

In addition, the terms "comprises" and / or "comprising" mean that such features and / or components are present, but exclude the presence or addition of one or more other features, components, and / or groups thereof. It should be understood that it does not.

In addition, terms including ordinal numbers such as first and second may be used to describe various components, but the components are not limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as the second component, and similarly, the second component may also be referred to as the first component. The term and / or includes a combination of a plurality of related items or any item of a plurality of related items.

In addition, in the embodiments of the present invention, unless otherwise defined, all terms used herein including technical or scientific terms are generally understood by those skilled in the art to which the present invention belongs. It has the same meaning. Terms such as those defined in the commonly used dictionaries should be interpreted as having meanings consistent with the meanings in the context of the related art, and ideally or excessively formal meanings are not defined clearly in the embodiments of the present invention. Not interpreted as

1 to 4 are flowcharts of a method for supporting multi-communication and multi-protocol between systems using an embedded CPU included in a PLC according to an embodiment of the present invention.

Prior to the description of the present invention, a method for supporting multi-communication and multi-protocol between systems using an embedded CPU included in a PLC according to each embodiment of the present invention is embedded in a PLC according to each embodiment of the present invention described below. It will be implemented by each configuration of a multi-communication and multi-protocol supporting apparatus between systems using a CPU. In addition, an apparatus for supporting multi-communication and multi-protocol between systems using an embedded CPU included in a PLC according to each embodiment of the present invention may include one or more processors and one or more memories for storing instructions that can be executed by the processor. The same as a computing device, or means a hardware or software configuration implemented in the computing device.

On the other hand, in the present invention, the multi-communication and multi-protocol supporting apparatus and computing device between the systems using the embedded CPU included in the PLC, preferably the same concept or embedded as the embedded CPU module implemented in a programmable logic controller (PLC) on the automatic control system It may be some terminal included in the CPU module and implemented. In addition, the multi-communication and multi-protocol support method between systems using the embedded CPU included in the PLC according to an embodiment of the present invention, the multi-communication and multi-protocol support apparatuses between the computing device, the system using the embedded CPU included in the PLC, etc. It will be implemented by, but specifically, each function will be performed through a program tool running on the embedded CPU module. That is, a system using an embedded CPU included in a PLC by inputting by an input means included in the PLC of a user to a program tool driven in an embedded CPU module and performing a function of a computing device as the program tool interfaces. It will be understood that multi-communication and multi-protocol support methods between the two are performed.

Referring to the above description, in the method for supporting multi-communication and multi-protocol between systems using an embedded CPU included in a PLC according to an embodiment of the present invention, the first device is driven by an embedded CPU module implemented in a PLC including a computing device. According to the initial input through the program tool is a project generation step (S10) for generating a first program for automatic control for each system is performed.

In the present invention, a program tool refers to a program that manages a corresponding interface when an interface is outputted to an output means according to a function of a CPU module. Generally, a program tool is a kind of interface. When a user checks this through an output means and performs a specific input through the input means, the program tool means a configuration that performs a function according to the input.

In performing the function of step S10, the initial input is a project corresponding to the upper system of the corresponding site and the sub-system which is the object of control, monitoring and measurement in the specific site to which the automatic control system is applied, that is, the automatic control system. Create a bulk program that contains only basic functions for the program to perform the function of the program, and the path where the project can be saved, that is, the path where the project should be stored so that the function of the automatic control system can be implemented in the embedded CPU module. It means the input to set. In the following description, all the inputs are automatically performed by the computing device, or in the case of inputs requiring a specific setting value such as initial input, it means that the input through the program tool according to the user's input to the above-described input means.

In addition, the initial input may include an input for selecting a program language suitable for the environment of the above-described automatic control system site. Automated control system site means any site where remote monitoring, measurement and automatic control of subordinate terminals to be controlled, such as substations, water treatment plants, sewage treatment plants, pump stations, reservoirs and other buildings, can be applied.

On the other hand, in the field of the automatic control system, as described above, the device is operated at least in the field system, which refers to various equipments that are controlled according to the control command and measure the control result or the surrounding environmental value required for the control. A sub-system consisting of a device that measures data, a programmable logic controller (PLC) and a digital to digital controller (DDC) for a device in the field system, and receives sensing values from the sub-system to monitor and measure the sub-system. And an HMI for generating a control command according to a set range or an input value and transmitting the control command to the subsystem to perform control on the subsystem, that is, at least monitoring the operation of the subsystem and controlling the operation of the subsystem. It can be configured to include the parent system on which the Human Machine Interface is implemented. The. In other words, the upper system and the lower system form a server-client system, and establish an automatic control system for automatically controlling complex facilities by transmitting and receiving data between the systems.

When the step S10 is performed, the embedded according to the first input from the input means for the first communication method and the first protocol setting value as the communication method and protocol setting value for data transmission and reception between the embedded CPU module and the sub-system, A first setting step S20 of generating a first communication port and a first protocol, which is a communication port and a protocol between the CPU module and the subsystem, and storing the first communication port and the first protocol, is performed.

In the present invention, the communication method with the subsystem is to determine the hardware communication method, for example, RS-232, RS-485, TCP / IP, UDP / with the subsystem including the controller and the PLC, DDC, etc. As a concept including a communication method such as IP, it may include various communication methods in addition to the communication method.

On the other hand, the communication protocol of the sub-system is a protocol such as DNP 3.0, IEC 61850, Modbus, BACnet, etc. with each instrument controller and PLC, DDC, etc. Concept.

Step S20 receives the setting values for the communication method and communication protocol capable of data transmission and reception for the sub-system among the above-described multi-communication method and the multi-communication protocol, and after checking this, through the input to the above-described program tool, It refers to a function of initially generating a communication port and a protocol for forming a communication network between hardware that executes a program generated by an embedded CPU module, that is, a program tool, and serves as a gateway for data transmission and reception.

After the step S20 is performed, a second setting step S30 of setting a variable for collecting data of the subsystem and a communication period for updating data is performed. In the present invention, since communication with the subsystem on the embedded CPU module on the PLC that does not require a universally available gateway, rather than communication with a predetermined subsystem through the installation of a specific gateway, the control of the subsystem, It is necessary to set a communication period for data update from the lower system according to the variable for monitoring and measurement and the communication period with the upper system.

Specifically, referring to FIG. 2, in the performing of the function of step S30, first, a variable for data collection is generated according to the type of a sub-system, and a variable type of a data tag type is set and stored in a program tool. The first storage step S31 is performed. Since the program tool sets the program to perform the function of the gateway, after setting the variable type of the variable generation and the data tag type for setting the first program, it corresponds to the program tool for data acquisition and database (DB) management. Save the value.

Subsequently, a first communication cycle for setting data of the lower system is set, but a first communication cycle setting step (S32) is set to be shorter than a second communication cycle, which is a data collection cycle for requesting a preset upper system for each specification of the upper system. Is performed. This is a technical feature that it is impossible to collect the latest data from the lower system when the first communication period that is the data collection period of the lower system is set longer than the second communication period that is the data collection period that the upper system requests.

Returning to the description of FIG. 1 again, when the function of step S30 is completed as described above, the logic according to the automatic control condition of the subsystem is configured through a program tool, and the real-time variables and the virtual corresponding to the condition of the configured logic A third setting step S40 of assigning a variable is performed.

Since the driving logic according to the automatic control condition for each subsystem is set differently, according to the logic configuration interface provided by the program tool, the user uses input means to configure the corresponding logic, that is, the control and measurement of each subsystem. And receiving and configuring the inputs that make up the detailed program code for monitoring, assigning specific real-time variable values for subsystem control, measurement and monitoring, and assigning virtual variables for compilation and simulation, etc. Will perform the steps.

Completion of the execution of step S40 will be understood as a concept of completing the Client Configuration for the client program, that is, the program with the subsystem of the first program, for example. Thereafter, when step S40 is performed, after completion of the third setting step S40, a first verification step S50 of checking the integrity of the first program is performed through compilation and virtual simulation of the first program.

Step S50 is a step of compiling, debugging, and simulating a gateway replacement program for data transmission and reception between the subsystem and the embedded CPU module, and among the components of the first program, control, measurement, and monitoring with the subsystem. It means the completion of the program part through verification of the integrity of the program.

Specifically, referring to FIG. 3, in the execution of step S50, the first program configured as the execution of the third setting step S40 is completed using the data tag type, the real time variable, and the virtual variable of the subsystem. The first compilation step S51 of testing whether or not the first program operates normally is performed through the compile.

Then, when an error occurs according to the progress of the compilation step (S51) for the corresponding part of the program, the first debugging step (S52) that enters the root (Root) of the error-produced first program and proceeds debugging Then, the user checks the error of the program code and the like, and debugs the program code using the program tool through the input means. For this purpose, when selecting an interface that outputs an error message and an error message that is output on the interface, the program enters the program root where the error (Error and / or Warning) occurs and outputs the code, and edits the code. The lights may be output through an interface inside the program tool or a separate screen.

Thereafter, after performing the first debugging step, the first verification completion step of checking the integrity of the first program by controlling the logic configured in the third setting step S40 and the value of each data using the virtual simulation function in the program tool. (S53) is performed. The virtual simulation function included in the interface in the program tool controls the automatic control logic and data values of the sub-system, that is, the client driver module, to check whether the program operates with various variable values.

That is, when the compilation of the first program with the subsystem is successfully completed through the step S52, the virtual variables for the control, the measurement and the monitoring of the subsystem are input, and the normal output value thereof is verified and verified. 1 The integrity of the program, that is, the verification of whether the control, measurement, and verification of the sub system through the data transmission and reception with the sub system of the first program are normally performed.

That is, through the function of S50 (including steps S51 to S53), as a program for data transmission and reception with a sub-system among the first programs, the compilation and integrity of the client program is verified.

Thereafter, similarly to the process of generating and verifying the integrity of the first program, that is, the client program with the lower system, the process of generating and verifying the integrity of the first program, that is, the server program, with the upper system is performed.

Returning to the description of FIG. 1, when the integrity of the client program of the first program is verified and the configuration of the corresponding program is completed, a second communication method and protocol setting value for data transmission / reception between the embedded CPU module and the upper system may be used. According to the second input from the input means for the communication method and the second protocol setting value, the second communication port and the second protocol, which is a communication port and protocol between the embedded CPU module and the host system, are generated and stored in the first program. A fourth setting step S60 is performed. This means performing almost the same function as step S20 described above.

Thereafter, a fifth setting step S70 is performed in which the upper system proceeds with a process for setting data management criteria for collecting and managing data of the lower system. In order to perform a normal function between the upper system and the lower system in response to the function of the step S30, the step S70 is the data that the upper system requests data tag type with the lower system stored in the program tool by the second setting step S30. It is desirable to perform the function of mapping the tag type and the real-time data.

Completion of the execution of the step S70 will be understood as a concept of completing the Server Configuration for the server program, that is, the program with the upper system of the first program, for example.

Thereafter, similarly to the first verifying step S50, after the completion of the fifth setting step S70, the second verifying step S80 of checking integrity of the first program through compilation and virtual simulation of the first program. Is performed. As mentioned in the description of the first verification step S50, the first program to be compiled and integrity-verified in the second verification step S80 is not a client program for the subsystem, but a part of the first program for the parent system. Although it is preferable that the server program is the above-described one program, it can be understood to include the concept of verifying the integrity of the first overall program including the client program which has been debugged and the integrity verification already completed for accurate integrity verification.

In detail, step S80 is similar to step S50, as shown in FIG. 4. First, as the execution of the fifth setting step S70 is completed by using a data tag type, a real-time variable, and a virtual variable with the upper system. A second compilation step S81 is performed to test whether the first program operates normally by compiling the first program, that is, the server program.

Thereafter, similarly to the step S52, when an error occurs according to the progress of the second compilation step, a second debugging step S82 is performed to enter the root of the first program in which the error occurs and perform debugging. Thereafter, similarly to the execution of the step S53, the logic and each data configured in the first setting step S20 to the fifth setting step S70 by using the virtual simulation function in the program tool after the execution of the second debugging step S82. The second verification completion step S83 of checking the integrity of the first program by controlling the value of is performed.

In other words, it should be understood that the above concept includes not only the above-described function for verifying the integrity of the server program but also the concept of performing virtual simulation and data control functions for verifying the integrity of the entire first program.

Returning to the description of FIG. 1 again, if the integrity of all the first programs is verified, downloading the first program whose integrity has been verified by the second verifying step S80 from the program tool to the embedded CPU via a network. By performing the program installation step (S90), according to the performance of the present invention through the embedded CPU module included in the PLC and the program tool therefor, without the gateway, data transmission and reception adaptively to all communication methods and communication protocols of the upper and lower systems The performance of the function to enable this is completed.

According to the present invention described above, a communication method and a communication protocol between each system are mutually different using an embedded CPU included in a PLC in charge of communication between a higher system and a lower system using a program tool executed by the CPU or a separate terminal. Although different, the first program is generated as an adaptable project, and accordingly, the control logic and the communication scheme and communication protocols between the systems are set and the integrity verification thereof is performed. It is possible to cope with all communication methods and communication protocols without the need of installing a gateway.

As a result, the corresponding cost is greatly reduced in the communication between the multiple communication methods and the multi-protocol for the control, measurement, and monitoring between the systems of the automatic control system through the lower system and the upper system, and easily with only one program tool. It is possible to operate.

5 is a schematic configuration diagram of an automatic control system in which the present invention is implemented. In the following description, a description of overlapping parts with the description of FIGS. 1 to 4 will be omitted.

Referring to FIG. 5, in the automatic control system in which the present invention is implemented, the upper system 100 may be implemented as an HMI as described above, and may monitor / control / measure data acquisition and processing, DB management, and subsystem. And an interface 110 that performs other report management functions. At this time, the communication scheme 130 and the protocol 120 for this may be set for communication with the embedded CPU module 200 in which the above-described first program is installed.

On the embedded CPU module 200, other field solid line cable 260 is connected to be responsible for data transmission and reception. In addition, the Sever driver module 230 supporting the multi-communication method according to the communication method of the upper system 100, the Sever driver module 220 supporting the multi-protocol according to the protocol method of the upper system 100, data acquisition and Client TOOL module 240 that supports multi-protocol according to protocol method of sub-system 300, program tool 210 for installing and executing the first program capable of processing, LOGIC, DB management, VME IO module monitoring control measurement. It includes a client driver module 250 that supports multiple communication method according to the communication method of the subsystem 300.

The Sever driver module 230 that supports multiple communication methods includes substations, building automation, water purification plants, sewage treatment plants, pump stations, and drainage systems (HMI, 100) and RS-232, RS-485, TCP / IP, UDP /. Data collection functions such as monitoring, control, and measurement can be performed by communication methods such as IP, and the server driver module 220 that supports multiprotocol includes the host system 100 and DNP 3.0, IEC 61850, Modbus, and BACnet. Depending on the protocol, data collection such as monitoring, control, and measurement can be performed.

On the other hand, the client driver module 250 supporting the multi-communication method with the sub-system 300 is each instrument controller and field equipment 310 of the sub-system 300 such as PLC, DDC, RS-232, RS-485, Data collection such as monitoring, control and measurement and automatic control using LOGIC can be performed by communication method such as TCP / IP, UDP / IP, etc. The client driver module 240 supporting multiprotocol is each instrument controller and PLC. , Data collection such as monitoring, control, measurement, and automatic control using LOGIC can be performed according to the field equipment 310 of the sub-system 300 such as DDC and DNP 3.0, IEC 61850, Modbus, BACnet, and other protocols. .

6 to 8 are block diagrams of all or a part of components of a multi-communication and multi-protocol supporting apparatus between systems using an embedded CPU included in a PLC according to each embodiment of the present invention. In the following description, unnecessary description of parts overlapping with the description of FIGS. 1 to 5 will be omitted.

Referring to FIG. 6, a multi-communication and multi-protocol support apparatus (hereinafter, referred to as a support apparatus) between systems using an embedded CPU included in a PLC according to each embodiment of the present invention may be provided to, for example, the PLC 30. It may be implemented by being included in a CPU module which is executed by the program tool 20 itself which is performed by the embedded CPU module included in the embedded CPU module or by downloading the above-described first program from the program tool 20.

The support device 10 includes a project generation unit 11, which is initially generated by a program tool 20 driven by an embedded CPU module implemented in a PLC 30 including a computing device. A function of generating a first program for automatic control for each system according to an input is performed. That is, it will be understood as a configuration that performs all the functions mentioned in the description of step S10 of FIG.

As shown in FIG. 7, the subsystem setting unit 12 includes a first setting unit 121, a second setting unit 122, and a third setting unit 123, and specifically, the first setting unit 12. The unit 121 is a communication method and a protocol setting value for data transmission and reception between the embedded CPU module and the sub-system, and according to a first input from an input means for the first communication method and the first protocol setting value, A first communication port and a first protocol, which are communication ports and protocols with the subsystem, are generated and stored in the first program. That is, it will be understood as a configuration for performing all the functions mentioned in the description of the step S20 of FIG.

Meanwhile, the second setting unit 122 performs a function of setting a variable for collecting data of a lower system and a communication period for updating data. That is, it will be understood as a configuration that performs all the functions mentioned in the description of the step S30 of FIG. 1 and the steps S31 to S32 of FIG. 2.

The third setting unit 123 configures logic according to the automatic control condition of the sub system through the program tool, and performs a function of assigning a real time variable and a virtual variable corresponding to the condition of the configured logic. That is, it will be understood as a configuration that performs all the functions mentioned in the description of the step S40 of FIG.

The subsystem verification unit 13 performs a function of checking the integrity of the first program through compilation and virtual simulation of the first program after performing the function of the subsystem setting unit 12. That is, it will be understood as a configuration that performs all the functions mentioned in the description of the step S50 of FIG. 1 and the steps S51 to S53 of FIG. 3.

As shown in FIG. 7, the upper system setting unit 14 includes a fourth setting unit 141 and a fifth setting unit 142. Specifically, the fourth setting unit 141 includes an embedded CPU module. Communication port and protocol between the embedded CPU module and the host system according to a second input from the input means for the second communication method and the second protocol setting value as a communication method and protocol setting value for data transmission and reception with the host system. A second communication port and a second protocol are generated and stored in the first program. That is, it will be understood as a configuration for performing all the functions mentioned in the description of the step S60 of FIG.

On the other hand, the fifth setting unit 142 performs a function of proceeding a process for setting the data management criteria for the upper system to collect and manage the data of the lower system. That is, it will be understood as a configuration for performing all the functions mentioned in the description of the step S70 of FIG.

The upper system verification unit 15 performs a function of checking the integrity of the first program through compilation and virtual simulation of the first program after performing the function of the upper system setting unit 14. That is, it will be understood as a configuration that performs all the functions mentioned in the description of the step S80 of FIG. 1 and the steps S81 to S83 of FIG. 4.

The program installation unit 16 performs a function of downloading the first program whose integrity has been verified by the upper system verification unit 15 from the program tool 20 to the embedded CPU via a network.

FIG. 9 is a view for explaining an example in which a system using an embedded CPU included in a PLC according to an embodiment of the present invention is applied.

Referring to FIG. 9A, in the building automatic control system, various devices for automatic control control constitute the upper system 101. The upper system 101 is connected to various terminals of the lower system 301 to be controlled, measured and monitored by the system 201 of the present invention instead of the gateway.

Referring to FIG. 9B, the present invention can be applied to a power management system. For example, on a SCADA system for water management, a water cooling system, and a system for communication security, the upper system 102 is connected to the sub-system 302 without control over the gate by the system 201 of the present invention. And monitoring.

Meanwhile, referring to FIG. 9C, various terminals including the upper system in the water purification plant may be connected to the terminals of the lower system or the various systems in the same class by the system of the present invention. That is, the present invention can be applied to both the upper and lower system configurations and multiple terminal connection systems connected by various communication methods and protocols by a network as shown in (a) to (c) of FIG. 9.

FIG. 10 illustrates an example of an internal configuration of a computing device according to an embodiment of the present disclosure. In the following description, a description of unnecessary embodiments overlapping with the description of FIGS. 1 to 9 will be omitted. Shall be.

As shown in FIG. 10, the computing device 10000 includes at least one processor 1100, a memory 11200, a peripheral interface 11300, an input / output subsystem ( I / O subsystem 11400, power circuit 11500, and communication circuit 11600 at least. In this case, the computing device 10000 may correspond to a user terminal A connected to the tactile interface device A or the computing device B described above.

The memory 11200 may include, for example, high-speed random access memory, magnetic disk, SRAM, DRAM, ROM, flash memory, or nonvolatile memory. have. The memory 11200 may include a software module, an instruction set, or other various data necessary for the operation of the computing device 10000.

In this case, accessing the memory 11200 from another component such as the processor 11100 or the peripheral device interface 11300 may be controlled by the processor 11100.

The peripheral interface 11300 may couple an input and / or output peripheral of the computing device 10000 to the processor 11100 and the memory 11200. The processor 11100 may execute a software module or an instruction set stored in the memory 11200 to perform various functions and process data for the computing device 10000.

Input / output subsystem 11400 may couple various input / output peripherals to peripheral interface 11300. For example, the input / output subsystem 11400 may include a controller for coupling a peripheral device such as a monitor or keyboard, a mouse, a printer, or a touch screen or a sensor, as necessary, to the peripheral interface 11300. According to another aspect, the input / output peripherals may be coupled to the peripheral interface 11300 without passing through the input / output subsystem 11400.

The power circuit 11500 may supply power to all or part of the components of the terminal. For example, power circuit 11500 may include a power management system, one or more power sources such as batteries or alternating current (AC), charging systems, power failure detection circuits, power converters or inverters, power status indicators or power sources. It can include any other components for creation, management, distribution.

The communication circuit 11600 may enable communication with another computing device using at least one external port.

Alternatively, as described above, the communication circuit 11600 may include an RF circuit to transmit and receive an RF signal, also known as an electromagnetic signal, to enable communication with other computing devices.

This embodiment of FIG. 10 is only an example of the computing device 10000, and the computing device 11000 may include some components shown in FIG. 10, or may further include additional components not shown in FIG. 10, or 2. It may have a configuration or arrangement that combines two or more components. For example, a computing device for a communication terminal in a mobile environment may further include a touch screen or a sensor, in addition to the components shown in FIG. 10, and various communication schemes (WiFi, 3G, LTE) in the communication circuit 1160. , Bluetooth, NFC, Zigbee, etc.) may include a circuit for RF communication. Components that may be included in computing device 10000 may be implemented in hardware, software, or a combination of both hardware and software, including integrated circuits specialized for one or more signal processing or applications.

Methods according to an embodiment of the present invention may be implemented in the form of program instructions that may be executed by various computing devices and may be recorded in a computer readable medium. In particular, the program according to the present embodiment may be configured as a PC-based program or an application dedicated to a mobile terminal. An application to which the present invention is applied may be installed in a user terminal through a file provided by a file distribution system. For example, the file distribution system may include a file transmitter (not shown) for transmitting the file at the request of the user terminal.

The apparatus described above may be implemented as a hardware component, a software component, and / or a combination of hardware components and software components. For example, the devices and components described in the embodiments are, for example, processors, controllers, arithmetic logic units (ALUs), digital signal processors, microcomputers, field programmable gate arrays (FPGAs), It may be implemented using one or more general purpose or special purpose computers, such as a programmable logic unit (PLU), microprocessor, or any other device capable of executing and responding to instructions. The processing device may execute an operating system (OS) and one or more software applications running on the operating system. The processing device may also access, store, manipulate, process, and generate data in response to the execution of the software. For convenience of understanding, one processing device may be described as being used, but one of ordinary skill in the art will appreciate that the processing device includes a plurality of processing elements and / or a plurality of types of processing elements. It can be seen that it may include. For example, the processing device may include a plurality of processors or one processor and one controller. In addition, other processing configurations are possible, such as parallel processors.

The software may include a computer program, code, instructions, or a combination of one or more of these, and configure the processing device to operate as desired, or process it independently or in combination. You can command the device. Software and / or data may be any type of machine, component, physical device, virtual equipment, computer storage medium or device for the purpose of interpreting or providing instructions or data to the processing device. It may be embodied permanently or temporarily. The software may be distributed over networked computing devices so that they are stored or executed in a distributed manner. Software and data may be stored on one or more computer readable recording media.

Method according to the embodiment is implemented in the form of program instructions that can be executed by various computer means may be recorded on a computer readable medium. The computer readable medium may include program instructions, data files, data structures, etc. alone or in combination. Program instructions recorded on the media may be those specially designed and constructed for the purposes of the present disclosure, or they may be of the kind well-known and available to those having skill in the computer software arts. Examples of computer-readable recording media include magnetic media such as hard disks, floppy disks, and magnetic tape, optical media such as CD-ROMs, DVDs, and magnetic disks, such as floppy disks. Magneto-optical media, and hardware devices specifically configured to store and execute program instructions, such as ROM, RAM, flash memory, and the like. Examples of program instructions include not only machine code generated by a compiler, but also high-level language code that can be executed by a computer using an interpreter or the like. The hardware device described above may be configured to operate as one or more software modules to perform the operations of the embodiments, and vice versa.

Although the embodiments have been described with reference to the limited embodiments and the drawings as described above, various modifications and variations are possible to those skilled in the art from the above description. For example, the described techniques may be performed in a different order than the described method, and / or components of the described systems, structures, devices, circuits, etc. may be combined or combined in a different form than the described method, or other components. Or even if replaced or replaced by equivalents, an appropriate result can be achieved. Therefore, other implementations, other embodiments, and equivalents to the claims are within the scope of the claims that follow.

Claims (10)

The present invention relates to a multi-communication and multi-protocol support method using an embedded CPU included in a PLC implemented as a computing device including at least one processor and at least one memory for storing instructions executable by the processor.
A project generation step of generating a first program for automatic control for each system according to an initial input through a program tool driven by an embedded CPU module implemented in a PLC including the computing device;
The embedded CPU module and the sub-system in accordance with a first input from an input means for a first communication scheme and a first protocol setpoint as a communication scheme and a protocol setpoint for data transmission and reception between the embedded CPU module and the subsystem; A first setting step of generating a first communication port and a first protocol which is a communication port and a protocol of the first protocol, and storing the first protocol in the first program;
A second setting step of setting a variable for collecting data of the subsystem and a communication period for updating data;
The program tool receives the input from the input means constituting the detailed program code for the control, measurement and monitoring of the subsystem to configure the driving logic according to the automatic control condition of the subsystem. A third setting step of configuring through the controller and substituting real-time variables corresponding to the conditions of the configured logic and virtual variables for compilation and simulation;
A first verifying step of verifying integrity of the first program through compilation and virtual simulation of the first program after completion of the third setting step;
According to the second input from the input means for the second communication method and the second protocol setting value as a communication method and protocol setting value for data transmission and reception between the embedded CPU module and the upper system, A fourth setting step of generating a second communication port and a second protocol, which are communication ports and protocols of the second protocol, and storing them in the first program;
A fifth setting step in which the upper system goes through a process for setting data management criteria for collecting and managing data of the lower system;
A second verifying step of verifying integrity of the first program through compilation and virtual simulation of the first program after completion of the fifth setting step; And
A program installation step of downloading a first program whose integrity is confirmed by the second verifying step from the program tool to the embedded CPU through a network;
The second setting step,
Generating a variable for data collection of the subsystem, setting a variable type of a data tag type and storing the variable in a program tool; And
A first communication period is set for updating data of the lower system, and the first communication period is higher than a second communication period, which is a data collection period requested by the upper system preset for data collection of the lower system by the specifications of the upper system. A first communication period setting step of setting a short time to collect the latest data from the subsystem; and
The first verification step,
Using the data tag type of the sub-system, the real-time variable and the virtual variable, test whether the first program operates normally by compiling the first program configured as the execution of the third setting step is completed. A first compilation step;
A first debugging step of performing debugging by entering a root of a first program in which an error occurs when an error occurs according to the progress of the first compilation step; And
A first verification completion step of verifying the integrity of the first program by controlling the logic configured in the third setting step and the value of each data by using the virtual simulation function in the program tool after performing the first debugging step; Including,
The fifth setting step,
Mapping the data tag type with the lower system stored in the program tool to the data tag type and real-time data requested by the upper system by the second setting step;
The second verification step,
Whether the first program operates normally by compiling the first program configured as the execution of the fifth setting step is completed using the data tag type, the real time variable and the virtual variable with the upper system. A second compilation step of testing;
A second debugging step of performing debugging by entering a root of a first program in which an error occurs when an error occurs according to the progress of the second compilation step; And
After performing the second debugging step, by using a virtual simulation function in the program tool to control the logic and the value of each data configured in the first to fifth setting step to verify the integrity of the first program Comprising 2; Completion step; Multi-communication and multi-protocol support method between systems using an embedded CPU included in the PLC comprising a.
The method of claim 1,
The project generation step,
A method for supporting multi-communication and multi-protocol between systems using an embedded CPU included in a PLC, characterized by selecting a program language corresponding to a system-specific environment according to an input by an input means.
delete delete delete delete The method of claim 1,
The upper system,
A method for supporting multi-communication and multi-protocol between systems using an embedded CPU included in a PLC, wherein the system is implemented with a Human Machine Interface (HMI) for monitoring at least the operation of the subsystem and controlling the operation of the subsystem.
The method of claim 1,
The subsystem is
Embedded CPU included in the PLC, characterized in that the system consists of at least a device operating in the field system, a device for measuring the field system, a programmable logic controller (PLC) and a digital to digital controller (DDC) for the device of the field system Method for supporting multi-communication and multi-protocol between systems.
The present invention relates to a multi-communication and multi-protocol supporting apparatus using an embedded CPU included in a PLC, which is implemented as a computing device including at least one processor and at least one memory storing instructions executable by the processor.
A project generation unit generating a first program for automatic control for each system according to an initial input through a program tool driven by an embedded CPU module implemented in a PLC including the computing device;
The embedded CPU module and the sub-system in accordance with a first input from an input means for a first communication scheme and a first protocol setpoint as a communication scheme and a protocol setpoint for data transmission and reception between the embedded CPU module and the subsystem; A first setting unit for generating a first communication port and a first protocol and a first protocol of the communication port and a protocol, and storing the first protocol in the first program, a variable for collecting data of a subsystem, and a second setting for setting a communication period for updating data In order to configure the driving logic according to the automatic control condition of the sub-system and the sub-system, input from the input means constituting the detailed program code for control, measurement, and monitoring of the sub-system is received and the logic according to the automatic control condition of the subsystem Real-time variables that are configured through the program tool and meet the conditions of the configured logic and A subsystem setting unit including a third setting unit which substitutes virtual variables for compilation and simulation;
A subsystem verification unit for verifying integrity of the first program through compilation and virtual simulation of the first program after performing the function of the subsystem setting unit;
According to the second input from the input means for the second communication method and the second protocol setting value as a communication method and protocol setting value for data transmission and reception between the embedded CPU module and the upper system, A fourth setting unit for generating and storing a second communication port and a second protocol, which are communication ports and protocols, in the first program, and a process for setting data management criteria for the upper system to collect and manage data of a lower system An upper system setting unit including a fifth setting unit configured to proceed;
An upper system verifying unit verifying the integrity of the first program through compilation and virtual simulation of the first program after performing the function of the upper system setting unit; And
And a program installation unit for downloading the first program whose integrity is confirmed by the upper system verification unit from the program tool to the embedded CPU through a network.
The second setting unit,
Create a variable for data collection of the subsystem, set the variable type of the data tag type (Data Tag Type) to store in the program tool, and set the first communication period for the data update of the subsystem, the upper system Set the first communication period to be shorter than the second communication period, which is a data collection period requested by the upper system preset by the specification of the lower system to collect the latest data from the lower system,
The subsystem verification unit,
Using the data tag type of the sub-system, the real-time variable and the virtual variable, test whether the first program operates normally by compiling the first program configured as the function of the third setting unit is completed. When an error occurs during compilation of the first program, the root of the first program in which the error occurs is debugged, and after the debugging is performed, the third program is executed by using a virtual simulation function in the program tool. Checking the integrity of the first program by controlling the logic configured in the setting unit and the value of each data,
The fifth setting unit,
Mapping a data tag type with a lower system stored in the program tool to a data tag type and real-time data requested by an upper system by the second setting unit;
The upper system verification unit,
Whether the first program operates normally by compiling the first program configured as the function of the fifth setting unit is completed using the data tag type, the real time variable, and the virtual variable with the upper system is completed. When the error occurs according to the compile process, the debugger enters the root of the first program in which the error occurs, and proceeds to debugging. After debugging, the first setting unit to the first through the virtual simulation function in the program tool. Multi-communication and multi-protocol support apparatus between systems using an embedded CPU included in the PLC, characterized by checking the integrity of the first program by controlling the logic configured in the fifth setting unit and the value of each data.
As a computer-readable recording medium,
The computer-readable recording medium stores instructions for causing a computing device to perform the following steps, the steps:
A project generation step of generating a first program for automatic control for each system according to an initial input through a program tool driven by an embedded CPU module implemented in a PLC including the computing device;
The embedded CPU module and the sub-system in accordance with a first input from an input means for a first communication scheme and a first protocol setpoint as a communication scheme and a protocol setpoint for data transmission and reception between the embedded CPU module and the subsystem; A first setting step of generating a first communication port and a first protocol which is a communication port and a protocol of the first protocol, and storing the first protocol in the first program;
A second setting step of setting a variable for collecting data of the subsystem and a communication period for updating data;
The program tool receives the input from the input means constituting the detailed program code for the control, measurement and monitoring of the subsystem to configure the driving logic according to the automatic control condition of the subsystem. A third setting step of configuring through the controller and substituting real-time variables corresponding to the conditions of the configured logic and virtual variables for compilation and simulation;
A first verifying step of verifying integrity of the first program through compilation and virtual simulation of the first program after completion of the third setting step;
According to the second input from the input means for the second communication method and the second protocol setting value as a communication method and protocol setting value for data transmission and reception between the embedded CPU module and the upper system, A fourth setting step of generating a second communication port and a second protocol, which are communication ports and protocols of the second protocol, and storing them in the first program;
A fifth setting step in which the upper system goes through a process for setting data management criteria for collecting and managing data of the lower system;
A second verifying step of verifying integrity of the first program through compilation and virtual simulation of the first program after completion of the fifth setting step; And
A program installation step of downloading a first program whose integrity is confirmed by the second verifying step from the program tool to the embedded CPU through a network;
The second setting step,
Generating a variable for data collection of the subsystem, setting a variable type of a data tag type and storing the variable in a program tool; And
A first communication period is set for updating data of the lower system, and the first communication period is higher than a second communication period, which is a data collection period requested by the upper system preset for data collection of the lower system by the specifications of the upper system. A first communication period setting step of setting a short time to collect the latest data from the subsystem; and
The first verification step,
Using the data tag type of the sub-system, the real-time variable and the virtual variable, test whether the first program operates normally by compiling the first program configured as the execution of the third setting step is completed. A first compilation step;
A first debugging step of performing debugging by entering a root of a first program in which an error occurs when an error occurs according to the progress of the first compilation step; And
A first verification completion step of verifying the integrity of the first program by controlling the logic configured in the third setting step and the value of each data by using the virtual simulation function in the program tool after performing the first debugging step; Including,
The fifth setting step,
Mapping the data tag type with the lower system stored in the program tool to the data tag type and real-time data requested by the upper system by the second setting step;
The second verification step,
Whether the first program operates normally by compiling the first program configured as the execution of the fifth setting step is completed using the data tag type, the real time variable, and the virtual variable with the upper system. A second compilation step of testing;
A second debugging step of performing debugging by entering a root of a first program in which an error occurs when an error occurs according to the progress of the second compilation step; And
After performing the second debugging step, using the virtual simulation function in the program tool to control the logic configured in the first to fifth setting steps and the value of each data to check the integrity of the first program; Comprising 2 verification step; Computer-readable recording medium comprising a.

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