KR101948722B1 - Method for changing setting value of electric power equipments - Google Patents

Abstract

The present invention relates to a method for changing a setting value of electric power equipment, capable of easily checking whether the setting value of the electric power equipment has been changed to the same setting value that a user wants to change. The method for changing a setting value of electric power equipment according to one embodiment of the present invention, which is performed in a master communication module connected to a plurality of slave communication modules through a serial communication network, includes the steps of: transmitting a data request signal including a predetermined communication address and receiving a response signal corresponding to the data request signal from a slave communication module corresponding to the communication address using the serial communication network; determining whether communication between the master communication module and the slave communication module is established normally on the basis of the data request signal and the response signal; transmitting the first setting value to the slave communication module, in which a setting value change event occurs to receive the first setting value from a user, among slave communication modules in which communication is normally established; receiving a second setting value corresponding to the first setting value stored in the slave communication module from the slave communication module in which the setting value change event has occurred; and determining whether the first setting value and the second setting value are the same.

Description

[0001] The present invention relates to a method of changing a set value of an electric power device,

The present invention relates to a method for changing a set value of a power device.

Recently, a plurality of power devices are monitored in real time by using a data transmission method using a Modbus RTU (Remote Terminal Unit) communication protocol based on the RS-485 communication standard in an industrial field.

Serial communication using RS-485 based Modbus RTU communication protocol includes communication between master and slave communication modules, and up to 247 slave communication modules can be connected. At this time, the communication address of the serial communication may be set to an address of 1 to 247 for each slave communication module.

In the Modbus serial communication, the master communication module receives a response signal from the slave communication module in response to a request signal transmitted sequentially according to the communication address through a data polling method.

The master communication module can change the setting value of the slave communication module by sending a request signal including the setting value of the slave communication module to the slave communication module.

If a set value change error occurs due to communication line noise during the data communication process for changing the setting value between the master communication module and the slave communication module, damage to the power equipment or damage to property or property may occur.

In order to prevent such set value change errors, an error check method using CRC (Cyclic Redundancy Check) data included in a Modbus protocol frame is used. However, only an error check method using CRC data may cause a problem I can not resolve the value change error.

1 is a view for explaining a conventional method of changing a set value of an electric power system.

1, the PC Manager 10 is connected to a plurality of human machine interfaces (HMI) 20, 20_1 and 20_n, and the HMI 20 includes a plurality of power devices 30, 30_1, 30_2, 30_n are connected to the communication. Communication between the HMI 20 and the plurality of power devices 30, 30_1, 30_2, and 30_n includes serial communication using the RS-485 based Modbus RTU protocol.

At this time, the PC Manager 10 may include a device or a program capable of monitoring or controlling a plurality of power devices through a plurality of HMIs. Further, the HMI 20 includes a display unit and may include a device or a program capable of monitoring or controlling a plurality of power devices. The power device 30 may include an electronic motor protection relay (EMPR).

In addition, the HMI 20 or the PC Manager 10 may include a master communication module, and the power device 30 may include a slave communication module.

In the serial communication between the HMI 20 and the plurality of power devices 30, 30_1, 30_2, and 30_n, the communication addresses of the plurality of power devices 30, 30_1, 30_2, Can be set. For example, in an industrial field, a set value or a measured value of the power device 30 may include a plurality of set values or metrics for controlling the operation of the motor, or for measuring the operation of the motor.

When a plurality of power devices 30, 30_1, 30_2, and 30_n that manage the same motor in the same power system are installed in the MCC (motor control center), a maximum of 100 identical set values are supplied to the plurality of power devices 30 and 30_1 , 30_2, and 30_n, respectively.

Further, there has been a problem in that, in the MODBUS serial communication, the user has to individually input the communication address for each power device in order to connect the communication between the plurality of power devices 30, 30_1, 30_2, 30_n and the master communication module .

On the other hand, when the setting value of the power device 30 is changed, there is a need for the user to individually confirm whether the set value of the power device 30 has been accurately changed by the setting value that the user wants to change.

An object of the present invention is to provide a power device setting value change method that can easily confirm whether a set value of a power device has been changed to the same set value to be changed by a user.

Another object of the present invention is to provide a power device setting value changing method for easily changing a set value of a plurality of power devices collectively in a master communication module managing a plurality of power devices.

It is another object of the present invention to provide a method of changing a set value of a power device that automatically connects communication of a power device without directly inputting a communication address by a user.

The objects of the present invention are not limited to the above-mentioned objects, and other objects and advantages of the present invention which are not mentioned can be understood by the following description and more clearly understood by the embodiments of the present invention. It will also be readily apparent that the objects and advantages of the invention may be realized and attained by means of the instrumentalities and combinations particularly pointed out in the appended claims.

In order to achieve the above object, a power device set value changing method of the present invention is a power device set value changing method performed in a master communication module connected with a plurality of slave communication modules and a serial communication network, Receiving a data request signal including a determined communication address and receiving a response signal corresponding to the data request signal from the slave communication module corresponding to the communication address; Determining whether or not the communication between the master communication module and the slave communication module is normally established; transmitting, to the slave communication module in which a set value change event is received from the slave communication module, Transmitting a value, Receiving a second set value corresponding to the first set value stored in the slave communication module from a slave communication module in which a value change event has occurred, and determining whether the first set value and the second set value are identical .

The step of determining whether the first set value and the second set value are identical may include determining whether the set value or the set value of the first set value and the second set value are the same have.

The determining whether or not the first set value and the second set value are identical may further include determining whether the set value change event is generated based on whether the first set value is equal to the second set value, And determining whether or not the set value change success is determined.

The determining whether or not the first set value and the second set value are identical may further include determining whether the set value change event occurs when the first set value and the second set value are equal to each other, And marking the change as successful.

A slave communication module having the same model information as that of the slave communication module in which the set value change event has occurred and a slave communication module having different model information from the slave communication module, And may further include a step of distinguishing.

The transmitting of the first set value may include changing the set value of the slave communication module having the same model information as the model information of the slave communication module in which the set value change event has occurred to the first set value can do.

The step of transmitting the first set value may further include setting a set value of the slave communication module input from the user among the slave communication modules having the same model information as the model information of the slave communication module in which the set value change event has occurred, 1 < / RTI > set value.

According to the present invention, there is an advantage that the reliability of the set value change can be improved by easily checking whether the set value of the power device is changed equally by the set value to be changed by the user.

Further, according to the present invention, in the master communication module managing a plurality of power devices, setting values of a plurality of power devices can be easily changed collectively, thereby reducing the time required for changing setting values and improving work efficiency in an industrial field There is an advantage.

In addition, according to the present invention, there is an advantage that time and cost can be saved by automatically connecting the communication of the electric power device without directly inputting the communication address by the user.

The above and other objects, features and advantages of the present invention will be more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which: FIG.

1 is a view for explaining a conventional method of changing a set value of an electric power system.
FIG. 2 is a diagram for explaining a power device setting value changing method according to an embodiment of the present invention. Referring to FIG.
FIG. 3 is a diagram illustrating a detailed configuration of the master communication module included in FIG. 2. FIG.
FIG. 4 is a diagram illustrating a detailed configuration of a slave communication module included in FIG. 2. FIG.
5 is a flowchart illustrating a method of changing a set value of a power device according to some embodiments of the present invention.
6 is a flowchart illustrating a communication connection determination method according to some embodiments of the present invention.
7 is a flowchart illustrating a method of changing a power device set value according to an embodiment of the present invention.
8 is a flowchart illustrating a communication connection determination method according to an exemplary embodiment of the present invention.
9 is a flowchart illustrating a communication connection determination method according to another embodiment of the present invention.
10 is a flowchart illustrating a method of changing a set value of a power device according to another embodiment of the present invention.
11 is a view for explaining a data request signal and a response signal according to some embodiments of the present invention.
12 is a view for explaining a data request signal and a response signal according to an embodiment of the present invention.
13 is a view for explaining a data request signal and a response signal according to another embodiment of the present invention.
FIG. 14 is a view showing a power device setpoint change screen according to some embodiments of the present invention.
FIG. 15 is a diagram illustrating a power device setting value change screen according to an embodiment of the present invention.
16 is a view showing a power device set value change screen according to another embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention and the manner of achieving them will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. Is provided to fully convey the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

Although the first, second, etc. are used to describe various components, it goes without saying that these components are not limited by these terms. These terms are used only to distinguish one component from another. Therefore, it goes without saying that the first component mentioned below may be the second component within the technical scope of the present invention.

Unless defined otherwise, all terms (including technical and scientific terms) used herein may be used in a sense commonly understood by one of ordinary skill in the art to which this invention belongs. Also, commonly used predefined terms are not ideally or excessively interpreted unless explicitly defined otherwise.

Hereinafter, a method of changing the power device set value according to some embodiments of the present invention will be described with reference to FIG. 2 to FIG.

FIG. 2 is a diagram for explaining a power device setting value changing method according to an embodiment of the present invention. Referring to FIG.

Referring to FIG. 2, the power device setting value change system according to an embodiment of the present invention may include a master communication module 100 and a slave communication module 200.

The master communication module 100 includes a module, an apparatus, or a program for performing serial communication using an RS-485 based Modbus RTU communication protocol.

The master communication module 100 may include an electronic device for setting or changing a set value of a plurality of power devices or monitoring a plurality of power devices.

For example, the master communication module 100 may be a personal computer, such as a human machine interface (HMI), a computer, an Ultra Mobile PC (UMPC), a workstation, a netbook, a personal digital assistant (PDA) Such as a web tablet, a wireless phone, a mobile phone, a smart phone, an e-book, a portable multimedia player (PMP), a portable game machine, ) Device, a black box, or a digital camera, for example. However, the present invention is not limited thereto.

The master communication module 100 can exchange data with a plurality of slave communication modules 200, 200_1 and 200_n using a serial communication network. At this time, the transmission unit of a communication frame exchanged between the master communication module 100 and the slave communication module 200 can be transmitted in units of bits.

The master communication module 100 can transmit a data request signal to the slave communication module 200 using the serial communication network. At this time, the slave communication module 200 receiving the data request signal extracts the communication address of the data request signal, and transmits only the slave communication module 200 corresponding to the communication address to the master communication module 100 . However, the present invention is not limited thereto.

The master communication module 100 can transmit a data request signal including the set value of the power device to the slave communication module 200. [ For example, the slave communication module 200 may extract a communication address from the data request signal and transmit a response signal to the master communication module 100. At this time, the master communication module 100 can change the setting value of the power device including the slave communication module corresponding to the extracted communication address. However, the present invention is not limited thereto.

The slave communication module 200 includes a module, an apparatus, or a program for performing serial communication using an RS-485 based Modbus RTU communication protocol.

The slave communication module 200 may include an electronic device for controlling or monitoring the power device. For example, the slave communication module 200 may include an electronic motor protection relay (EMPR), an air circuit breaker (ACB), a molded case circuit breaker (MCCB), or a miniature circuit breaker (MCB) . However, the present invention is not limited thereto.

FIG. 3 is a diagram illustrating a detailed configuration of the master communication module included in FIG. 2. FIG.

3, a master communication module 100 according to an exemplary embodiment of the present invention includes a communication unit 110, a memory unit 130, a display unit 150, a controller 170, an interface unit 190, A connection determination unit 171, a data request signal generation unit 173, a normal response determination unit 175, a communication connection result comparison unit 177, a measurement value reading and writing unit 176, Section 178. The < / RTI > The components of the master communication module 100 shown in FIG. 3 are not essential, so that a master communication module 100 having more or fewer components can be implemented.

The communication unit 110 may include an electronic device, a module, or a program for exchanging data with the slave communication module 200 to perform a communication connection determination method according to an embodiment of the present invention. However, the present invention is not limited thereto.

For example, the communication unit 110 transmits a data request signal including a communication address to at least one slave communication module corresponding to a predetermined communication address using the serial communication network of the MODBUS RTU protocol, It is possible to receive a response signal corresponding to the phase data request signal.

The controller 170 may include any type of conventional processor, microprocessor, or processing logic for interpreting and executing instructions. The control unit 170 may execute instructions stored in the memory unit 130 to display graphical information for a graphical user interface (GUI) on an external input / output device such as a display coupled to a high speed interface.

In another embodiment of the present invention, a plurality of controllers 170 may be used in conjunction with a plurality of memory units 130. In some embodiments, the controller 170 may be modified into a special purpose microprocessor by executing computer program instructions or by being programmed. The software may be distributed over a networked computer system and stored or executed in a distributed manner. The software and data may be stored on one or more computer readable recording media.

The control unit 170 may execute an operating system (OS) and one or more software applications executed on the operating system. In addition, the control unit 170 may access, store, manipulate, process, and generate data in response to execution of the software. One of ordinary skill in the art will appreciate that the control unit 170 may include a plurality of processing elements and / or a plurality of processing elements, ≪ / RTI > type of processing element.

For example, the control unit 170 may include a plurality of processors or one processor and one controller. Other processing configurations are also possible, such as a parallel processor. The software may comprise a computer program, code, instructions, or a combination of one or more of the foregoing, and may be configured to configure the controller 170 to operate as desired, ) Control unit 170 in response to the command.

The software and / or data may be in the form of any type of machine, component, physical device, virtual equipment, computer, Or may be embodied permanently, or temporarily, in a storage medium or device, or in a signal wave being transmitted. The software may be distributed over a networked computer system and stored or executed in a distributed manner. The software and data may be stored on one or more computer readable recording media.

The method according to an embodiment may be implemented in the form of a program command that can be executed through various computer means and recorded in a computer-readable medium. The computer-readable medium may include program instructions, data files, data structures, and the like, alone or in combination. The program instructions to be recorded on the medium may be those specially designed and configured for the embodiments or may be available to those skilled in the art of computer software. Examples of program instructions include machine language code such as those produced by a compiler, as well as high-level language code that can be executed by a computer using an interpreter or the like. The hardware devices described above may be configured to operate as one or more software modules to perform the operations of the embodiments, and vice versa.

The memory unit 130 may include a dynamic storage device for storing dynamic information and instructions for execution by the control unit 170, such as a random access memory (RAM). However, the present invention is not limited thereto.

In addition, the memory unit 130 may include a static storage device for storing static information and instructions for use by the control unit 170, such as a ROM (Read Only Memory). The memory unit 130 may be a volatile memory unit or a non-volatile memory unit. The memory portion 130 may also be another type of computer readable medium, such as a magnetic or optical disk.

The memory unit 130 may include a computer-readable recording medium storing one or more programs including instructions for causing the control unit 170 to perform operations when executing the communication connection determination method by the control unit 170. [ At this time, the memory unit 130 may include a communication protocol map (Map) of the Modbus RTU communication protocol.

The master communication module 100 or the slave communication module 200 can transmit a communication frame generated based on the communication protocol map. At this time, the communication frame may include a frame of a data request signal or a response signal. For example, the data request signal may include a communication address, a function code, a start address of request data, or a number of request data. The response signal may also include a communication address, a function code, a byte count of the response data, or a response data value.

For example, the communication protocol map may include a set value of the power device, a measured value of the power device, an accident history, or model information of the power device.

The display unit 150 may be a liquid crystal display (LCD), a thin film transistor liquid crystal display (TFT-LCD), an organic light emitting diode (OLED), a flexible display display, a 3D display, and an e-ink display.

The display unit 150 may include a touch screen panel that recognizes the input position and transmits the input to the system when the user touches the screen or touches the screen with a finger or a pen. The method of detecting the input may include a resistive film, a capacitance, an infrared ray or an optical type.

The display unit 150 may include a touch pad for sensing a touch. The display unit 150 or the touch pad may be configured to detect touch scrolling. However, the present invention is not limited thereto.

The display unit 150 may display different communication connection result messages according to the result of the comparison by the communication connection result comparison unit 177. [

The display unit 150 may display a communication connection result message including a connection amount error message if it is determined that the communication connection between the master communication module 100 and the at least one slave communication module 200 is abnormally connected.

The interface unit 190 may include a module or an electronic device for receiving an input signal from a user. For example, the interface unit 190 may include a touch pad, a mouse, a keyboard, a camera, or a speaker. At this time, the user can touch or click through a touch pad, a mouse or a keyboard, or input a gesture or voice using a camera or a speaker. However, the present invention is not limited thereto.

The interface unit 190 may receive a number or letter from a user or input a button displayed on the display unit 150. However, the present invention is not limited thereto.

The control unit 170 controls the communication connection between the master communication module 100 and the at least one slave communication module 200 according to the communication connection release command received from the user based on the connection quantity error message displayed on the display unit 150 Can be released.

For example, the control unit 170 may control the communication between the master communication module 100 and the at least one slave communication module 200 through the communication unit 110 according to the retry command received from the user based on the connection quantity error message. The communication connection can be retried.

The user can move a cursor or a pointer located in the object displayed on the display unit 150, for example, the list by scrolling the display unit 150 or the touch pad. Further, when the finger is moved on the display unit 150 or the touch pad, the path along which the finger moves may be visually displayed on the display unit 150. [ However, the present invention is not limited thereto.

The control unit 170 includes a communication connection determination unit 171, a data request signal generation unit 173, a normal response determination unit 175, a communication connection result comparison unit 177, a measurement value reading and writing unit 176, And a setting value reading and writing unit 178. [ However, the present invention is not limited thereto.

The data request signal generating unit 173 generates a data request signal based on the communication address and the function code of the slave communication module 200 to which the communication is to be connected based on the communication protocol map stored in the memory unit 130 (E.g., a stored function code), a data start address (e.g., a start address where the model information of the power device is stored), or a request data number (e.g., the number of model information bits of the power device) Lt; / RTI > However, the present invention is not limited thereto.

The normal response determination unit 175 can determine whether the response signal is normally responded based on the response signal received from the slave communication module 200. For example, if the master communication module 100 designates the byte length of the response signal and exceeds the predetermined byte length, it can be determined that the response is an abnormal response.

For example, when the master communication module 100 receives a response signal corresponding to the data request signal, it can determine that the response is a normal response. That is, if the type of the response signal matches the type of the response signal requested in the data request signal, it can be determined as a normal response. However, the present invention is not limited thereto.

The communication connection determination unit 171 can determine whether communication between the master communication module 100 and the slave communication module 200 is normally established. For example, when the response signal received from the slave communication module 200 in the master communication module 100 is a normal response, it is determined that communication between the master communication module 100 and the slave communication module 200 is normally established .

The communication connection determination unit 171 determines whether the response signal received from the slave communication module 200 in the master communication module 100 is a normal response twice, It can be determined that the communication is normally connected. However, the present invention is not limited thereto.

The communication connection determination unit 171 can determine whether communication is established between the master communication module 100 and the slave communication module 200 based on the data request signal and the response signal.

For example, the communication connection determination unit 171 determines the number of slave communication modules 200 connected to the master communication module 100 based on the quantity of the slave communication module 200 (i.e., the first quantity) The master communication module 100 and the at least one slave communication module 200 can be determined to be normally connected to each other. For example, the communication connection determination unit 171 may determine that the communication connection between the master communication module 100 and the at least one slave communication module 200 is established when the size of the first quantity is larger or smaller than the size of the second quantity It can be judged that it is abnormally connected.

The communication connection result comparison unit 177 compares the quantity of the slave communication module 200 connected to the master communication module 100 and the quantity of the communication connection target quantity received from the user based on the determination result of the communication connection determination unit 171 You can compare sizes. However, the present invention is not limited thereto.

The measured value reading and writing unit 176 can exchange measured values of power devices including the slave communication module 200 with the slave communication module 200 through the communication unit 110. [ For example, the measured value may include current, voltage, load factor or strain rate.

The set value reading and writing unit 178 exchanges setting values of the power devices including the slave communication module 200 with the slave communication module 200 through the communication unit 110 or transmits the setting values of the power devices including the slave communication module 200, The setting value can be set. For example, the set value may include a current set value, a voltage set value, or an optional ground set value. However, the present invention is not limited thereto.

FIG. 4 is a diagram illustrating a detailed configuration of a slave communication module included in FIG. 2. FIG.

4, the slave communication module 200 according to an exemplary embodiment of the present invention includes a communication unit 210, a memory unit 230, a controller 250, and a response signal generator 270. The components of the slave communication module 200 shown in FIG. 4 are not essential, so that the slave communication module 200 having more or fewer components can be implemented.

The communication unit 210 may include an electronic device, a module, or a program for exchanging data with the master communication module 100 to perform a communication connection determination method according to an embodiment of the present invention. However, the present invention is not limited thereto.

The memory unit 230 may include a dynamic storage device for storing dynamic information and instructions for execution by the control unit 250, such as a RAM (Random Access Memory). However, the present invention is not limited thereto.

In addition, the memory unit 230 may include a static storage device for storing static information and instructions for use by the control unit 250, such as a ROM (Read Only Memory). The memory unit 230 may be a volatile memory unit or a non-volatile memory unit. The memory portion 230 may also be another type of computer readable medium, such as a magnetic or optical disk. At this time, the memory unit 230 may include a communication protocol map (Map) of the Modbus RTU communication protocol.

The slave communication module 200 can transmit a communication frame generated based on the communication protocol map. At this time, the communication frame may include a frame of a data request signal or a response signal.

For example, the data request signal may include a communication address, a function code, a start address of request data, or a number of request data. The response signal may also include a communication address, a function code, a byte count of the response data, or a response data value.

For example, the communication protocol map may include a set value of the power device, a measured value of the power device, an accident history, or model information of the power device.

The control unit 250 may include any type of conventional processor, microprocessor, or processing logic for interpreting and executing instructions. The control unit 250 may execute instructions stored in the memory unit 230 to display graphical information for a graphical user interface (GUI) on an external input / output device such as a display coupled to a high speed interface.

In another embodiment of the present invention, a plurality of control units 250 may be used with a plurality of memory units 230. In some embodiments, the control unit 250 may be modified into a special purpose microprocessor by executing computer program instructions or by being programmed. The software may be distributed over a networked computer system and stored or executed in a distributed manner. The software and data may be stored on one or more computer readable recording media.

One of ordinary skill in the art will recognize that the control unit 250 may include a plurality of processing elements and / or a plurality of processing elements, ≪ / RTI > type of processing element. For example, the control unit 250 may include a plurality of processors or one processor and one controller. Other processing configurations are also possible, such as a parallel processor.

In another embodiment of the present invention, a plurality of control units 250 may be used with a plurality of memory units 230. In some embodiments, the control unit 250 may be modified into a special purpose microprocessor by executing computer program instructions or by being programmed. However, the present invention is not limited thereto.

The response signal generation unit 270 extracts a communication address included in the data request signal received from the master communication module 100, and when a communication address corresponding to the slave communication module 200 is extracted, A response signal can be generated.

For example, the response signal generator 270 of the slave communication module 200 corresponding to the communication address " 1 " can generate a response signal only when the communication address extracted from the data request signal corresponds to " 1 & .

The response signal generation unit 270 generates a response signal based on the communication address and the function code of the slave communication module 200 based on the communication protocol map stored in the memory unit 230. For example, , A byte count (e.g., a byte count of the response signal), or a data value (e.g., model information of the power device). However, the present invention is not limited thereto.

5 is a flowchart illustrating a method of changing a set value of a power device according to some embodiments of the present invention.

5, the master communication module 100 transmits a data request signal including a predetermined communication address to the slave communication module 200 corresponding to the communication address using the serial communication network of the Modbus RTU protocol , And receives a response signal including the model information of the slave communication module 200 corresponding to the data request signal from the slave communication module 200 (S100).

Then, the master communication module 100 can determine whether communication between the master communication module 100 and the slave communication module 200 is normally established based on the data request signal and the response signal (S110). For example, the master communication module 100 can receive the model information and the setting values of the slave communication module 200 that the communication is normally connected.

Then, the master communication module 100 can receive the model information or the setting value of the second slave communication module in which the set value change event of the first slave communication module with normal communication is generated (S120). For example, the master communication module 100 receives the model information or setting value of the second slave communication module corresponding to the button input from the user among the buttons corresponding to the first slave communication module normally connected to the communication displayed on the display unit can do.

For example, the set value change event is generated when the user inputs a set value change screen of the slave communication module 200 for which the set value is to be changed in the display unit of the master communication module 100, or inputs a changed set value .

Then, the master communication module 100 transmits the set value change event of the first slave communication module, which is normally connected, to the third slave communication module having the same model information as the model information of the second slave communication module It is possible to distinguish the fourth slave communication module having the model information (S130).

For example, the master communication module 100 may display a button corresponding to the third slave communication module on the display unit in a manner different from the button corresponding to the fourth slave communication module. At this time, the button corresponding to the third slave communication module can be activated so that the button can be input when the activation condition that can change the setting value is satisfied.

For example, the master communication module 100 distinguishes the first button among the buttons corresponding to the third slave communication module from the first button received from the user and the second button among the buttons corresponding to the third slave communication module Can be displayed. However, the present invention is not limited thereto.

Then, the master communication module 100 can change the setting value of the slave communication module selected from the user among the slave communication modules that are distinguished (S140). For example, the master communication module 100 may change the set value of the third slave communication module to the same value as that of the second slave communication module. At this time, the master communication module 100 can change the setting value of the third slave communication module corresponding to the button input from the user among the buttons corresponding to the third slave communication module to be the same as the setting value of the second slave communication module . However, the present invention is not limited thereto.

6 is a flowchart illustrating a communication connection determination method according to some embodiments of the present invention.

Referring to FIG. 6, the number "N" (where N is a natural number) of the communication connection target devices and the quantity "M" (where M is a natural number) of the power devices to which communication is connected are compared (S200). For example, the master communication module 100 can compare the quantity N input from the user with the quantity M of the power devices connected to the communication result of the communication connection attempt.

Then, if N and M are equal to each other (S210), the master communication module 100 may display a communication connection result including a normal connection message indicating that the communication is normally connected (S213).

Subsequently, the master communication module 100 can perform monitoring on the power device to which the communication is connected (S215). For example, if the quantity input by the user is equal to the number of power devices to which communication is connected, the master communication module 100 may determine that there are no missing or duplicated power devices.

If N is greater than M (S220), the master communication module 100 may display a communication connection result including the connection quantity error message (S240). If N is less than M (S230), the master communication module 100 may display the communication connection result including the connection quantity error message (S240). For example, the connection quantity error message may include a method of resolving the error. However, the present invention is not limited thereto.

Then, the master communication module 100 can release the communication connection between the master communication module 100 and the at least one slave communication module 200 according to the communication connection release command received from the user based on the connection quantity error message (S243). Alternatively, the master communication module 100 may retry the communication connection between the master communication module 100 and the at least one slave communication module 200 in accordance with the communication connection retry command received from the user based on the connection quantity error message (S245). However, the present invention is not limited thereto.

7 is a flowchart illustrating a method of changing a power device set value according to an embodiment of the present invention.

Referring to FIG. 7, the master communication module 100 transmits a data request signal to the slave communication module 200 and receives a response signal from the slave communication module 200 (S300). For example, the master communication module 100 transmits a data request signal including a predetermined communication address to the slave communication module 200 corresponding to the communication address using the serial communication network of the Modbus RTU protocol, The communication module 200 can receive a response signal corresponding to the data request signal.

For example, the data request signal may include a setting value of the power device including the slave communication module 200 or the slave communication module 200. At this time, the set value may include setting item or set value data. For example, the setting value may include a current setting value, a voltage setting value, or a frequency setting value.

Then, the master communication module 100 can determine whether communication between the master communication module 100 and the slave communication module 200 is normally established (S310). For example, the master communication module 100 can determine whether communication between the master communication module 100 and the slave communication module 200 is normally established based on the data request signal and the response signal. A detailed description of whether or not communication is normally established will be described later.

Subsequently, the master communication module 100 may transmit a data request signal including a first set value received from the user to the second slave communication module in which the set value change event of the first slave communication module with normal communication is established (S320). For example, the master communication module 100 transmits a data request signal including a set value and a communication address to the slave communication module 200 corresponding to the communication address, The set value of the slave communication module 200 can be changed.

According to an embodiment of the present invention, a third slave communication module having the same model information as the model information of the second slave communication module among the at least one first slave communication module, the fourth slave communication module having model information and different model information, Communication modules can be distinguished. However, the present invention is not limited thereto.

At this time, the master communication module 100 can collectively change the set value of the third slave communication module to the first set value. In addition, the master communication module 100 may collectively change the set value of the third slave communication module received from the user among the at least one third slave communication module to a first set value.

Subsequently, the master communication module 100 may receive a response signal including the changed second setting value of the second slave communication module from the second slave communication module (S330). For example, the master communication module 100 may receive a response signal including the setting value of the slave communication module 200 from the slave communication module 200. However, the present invention is not limited thereto.

Subsequently, the master communication module 100 may compare the first set value and the second set value (S340). For example, the master communication module 100 may determine whether the setting items or the setting values of the first set value and the second set value are the same. At this time, the master communication module 100 can determine whether the set value of the second slave communication module is successfully changed based on whether the first set value and the second set value are the same or not.

For example, when the first set value and the second set value are the same, the master communication module 100 can display on the display unit that the set value has been successfully changed with respect to the set value change of the second slave communication module. If the first set value and the second set value are not the same, the master communication module 100 can display on the display unit that the set value change of the second slave communication module has failed. However, the present invention is not limited thereto.

8 is a flowchart illustrating a communication connection determination method according to an exemplary embodiment of the present invention.

Referring to FIG. 8, the master communication module 100 generates a data request signal (S500), and the master communication module 100 transmits a data request signal to the slave communication module 200 (S505). For example, the master communication module 100 may generate a data request signal including a predetermined communication address, and may transmit a data request signal to the slave communication module 200 using the serial communication network of the Modbus RTU protocol .

At this time, the master communication module 100 can transmit a data request signal to the slave communication module 200 corresponding to the communication address of the slave communication module 200 corresponding to the communication address of 1 to 247.

For example, the master communication module 100 may sequentially transmit a data request signal to the slave communication module 200 corresponding to the communication addresses 1 to 247. However, the present invention is not limited thereto.

Next, the slave communication module 200 generates a response signal (S510), and the slave communication module 200 transmits a response signal to the master communication module 100 (S515). For example, when receiving the data request signal from the slave communication module 200, the slave communication module 200 can extract the communication address from the data request signal.

At this time, the slave communication module 200 can transmit a response signal to the master communication module 100 when the communication address extracted from the data request signal matches the communication address of the slave communication module 200.

Then, the master communication module 100 determines whether a normal response is received (S520). For example, the master communication module 100 can determine whether or not the slave communication module 200 has a normal response based on the received response signal.

For example, if the master communication module 100 designates the byte length of the response signal and exceeds the predetermined byte length, it can be determined that the response is an abnormal response. For example, when the master communication module 100 receives a response signal corresponding to the data request signal, it can determine that the response is a normal response. That is, if the type of the response signal matches the type of the response signal requested in the data request signal, it can be determined as a normal response. However, the present invention is not limited thereto.

Then, the master communication module 100 transmits a data request signal to the slave communication module 200 (S525). Then, the slave communication module 200 generates a response signal (S530), and the slave communication module 200 transmits a response signal to the master communication module 100 (S535). For example, when the response signal received by the master communication module 100 is determined to be a normal response, the master communication module 100 can re-execute the step of transmitting the data request signal and determining whether the response is a normal response .

Then, the master communication module 100 determines whether communication is established (S540). For example, the master communication module 100 determines whether the master communication module 100 and the slave communication module 200 have received the response signal twice from the slave communication module 200, It is possible to determine whether or not the communication is normally established.

For example, when the response signal received from the slave communication module 200 in the master communication module 100 is a normal response, the master communication module 100 determines whether the response signal received from the master communication module 100 and the slave communication module 200 It can be determined that the communication is normally connected.

When the response signal received from the slave communication module 200 in the master communication module 100 is a normal response twice in succession, the master communication module 100 performs a normal response between the master communication module 100 and the slave communication module 200 It can be determined that the communication of the mobile station 100 is normally connected. However, the present invention is not limited thereto.

9 is a flowchart illustrating a communication connection determination method according to another embodiment of the present invention.

Referring to FIG. 9, the master communication module 100 attempts to establish a primary communication connection with the slave communication module 200 having a communication address N (for example, N is a natural number) address (S600).

For example, when the master communication module 100 first transmits a data request signal including the communication address 3 to the slave communication module 200 at the communication address 3, it can be referred to as a primary communication connection attempt .

Then, the master communication module 100 determines whether the response signal received from the slave communication module 200 having the communication address N address is a normal response (S610).

For example, the master communication module 100 may determine whether the response signal including the communication address 3 corresponding to the data request signal including the communication address 3 is a normal response.

For example, when the byte length of the response signal received by the master communication module 100 is within the predetermined byte length, it can be determined that the response signal is a normal response.

When transmitting a plurality of data request signals from the master communication module 100 and transmitting a response signal from the slave communication module 200 in the input / output waiting time between each data request signal transmission time, the master communication module 100, it can be determined that the response signal received in the input / output wait time is an abnormal response.

Then, if the response signal received by the master communication module 100 is a normal response, a secondary communication connection is attempted to the address N of the communication address (S615).

For example, when the response signal received in the primary communication connection attempt is a normal response, the master communication module 100 may attempt to establish a secondary communication connection to the same communication address as the primary communication connection attempt. At this time, the communication connection attempt can perform the same steps as the primary communication connection attempt.

For example, the primary and secondary communication connections may include one or two or one or two communication connections.

Then, in step S620, the master communication module 100 determines whether the response signal received from the slave communication module 200 at the communication address N address is a normal response. At this time, the determination of whether or not the response signal is a normal response may be the same as the first communication connection attempt. However, the present invention is not limited thereto.

If the response signal to the secondary communication connection attempt in the master communication module 100 is a normal response, it is determined whether the response signals of the primary and secondary communication connection attempts are the same (S625). For example, when the response signals of the first and second communication connection attempts are determined to be normal responses, the master communication module 100 determines whether the master communication module 100 and the slave communication module 200, It can be determined that the communication is normally connected. When the model information included in the response signals of the primary and secondary communication connection attempts is the same, it is determined that the communication between the master communication module 100 and the slave communication module 200 transmitting the response signal is normally connected Can

In an embodiment of the present invention, when all of the response signals in the primary and secondary communication connection attempts are determined to be a normal response, the master communication module 100 transmits the response signal to the slave communication module 200 ) And the master communication module 100 are normally connected to each other.

If the response signal in the primary and secondary communication connection attempts in the master communication module 100 is an abnormal response or the response signals in the primary and secondary communication connection attempts are not the same, (S630).

If the response signals of the primary and secondary communication connection attempts are identical in the master communication module 100, the communication connection success is displayed on the display unit (S630).

Then, in step S640, the master communication module 100 ends the communication connection attempt for the address N of the communication address, and determines whether the communication address N corresponds to 247.

If the communication address N does not correspond to 247 in the master communication module 100, a communication connection is attempted to the slave communication module 200 having the address N + 1 in operation S650. For example, the master communication module 100 may attempt to establish a communication connection to the communication address 2 after completing the communication connection attempt to the communication address 1 address. However, the present invention is not limited thereto.

10 is a flowchart illustrating a method of changing a set value of a power device according to another embodiment of the present invention.

10, a user can set a group of slave communication modules to change the set values among the slave communication modules 200 displayed in the display unit of the master communication module 100 according to the same type name or the same set value S700). For example, the group of slave communication modules for which the setting values are to be changed may include at least one slave communication module. However, the present invention is not limited thereto.

Then, the user can request a write of a set value to change the set value for the group of the slave communication module 200 set to change the set value (S710).

For example, the user may set the slave communication module 200 to have the same setting value as that of the slave communication module 200 that desires to change the set value with respect to the slave communication module group having the same type name as the slave communication module 200, You can make a request. At this time, the master communication module can transmit a data request signal including the communication address of the slave communication module to which the setting value is to be changed and the setting value to be changed to the slave communication module. However, the present invention is not limited thereto.

Subsequently, the master communication module 100 may determine whether a normal response is received based on the response signal received from the slave communication module 200 (S720). For example, the master communication module receives a response signal corresponding to a data request signal including a set value from the slave communication module, and can determine whether the setting value write has been normally performed through normal reception of the response signal. At this time, writing the setting value includes changing the existing setting value to the new setting value.

Then, if the response signal corresponding to the set value write is a normal response, the master communication module 100 may request the slave communication module 200 to read a set value (S730). For example, the master communication module may send a data request signal requesting the current set value of the slave communication module to the slave communication module, and may receive a response signal including the setting value from the slave communication module.

Then, the master communication module 100 may determine whether a normal response is received based on the response signal received from the slave communication module 200 (S740). For example, the master communication module receives a response signal including a set value from the slave communication module, and can determine whether a set value read has been normally performed through normal reception of a response signal. At this time, the setting value read (Read) includes bringing the current setting value of the slave communication module.

Then, when the response signal corresponding to the set value reading is a normal response, the master communication module 100 can compare the set value write value with the set value read value (S750). For example, the master communication module can compare the set value included in the data request signal requesting the set value write and the set value included in the response signal for the set value read request. At this time, it is possible to compare whether or not the set value is equal to the set value or the set value. However, the present invention is not limited thereto.

Then, the master communication module 100 may indicate whether the setting value is successfully written according to whether the set value is the same or not (S760). For example, when the set value of the set value write step and the set value read step are the same, the master communication module can display the result on the display unit as the successful write of the set value.

Then, the master communication module 100 can determine whether the setting value of the entire slave communication module included in the slave communication module group whose setting value is to be changed has been written (S770). For example, the master communication module may sequentially change the setting value of the slave communication module according to the communication address, and write the setting value when changing the setting value of the slave communication module corresponding to the last communication address. However, the present invention is not limited thereto.

11 is a view for explaining a data request signal and a response signal according to some embodiments of the present invention.

11, a data request signal 710 according to an embodiment of the present invention may include an address 711, a function code 713, a start address 715, and a request data number 717 .

Address 711 may include the communication address of the Modbus serial communication. The communication address may include a communication address having a natural number between 1 and 247. [ For example, one slave communication module 200 can be set to one communication address.

At this time, when one slave communication module 200 is connected to one communication address, the master communication module 100 can determine that the communication is normally connected. That is, when two or more slave communication modules 200 are connected to one communication address, the master communication module 100 can determine that the communication is abnormally connected.

The function code 713 may include a modbus function code included in the communication protocol map. For example, the function code 713 may be set to " 0x05 " to turn on / off the power device, " 0x04 " to read the measured value of the power device, " 0x03 &Quot; 0x06 "

The start address 715 may include an address at which the requested data is located in the communication protocol map. For example, when requesting the model information of the power device in the data request signal 710, the model information of the power device may be located at address " 0x53 " in the communication protocol map.

The number of requested data 717 may include the number of requested data in the data request signal 710. For example, when requesting current, voltage, and voltage measurements of a power device, the data request signal 710 may request three data.

The data request signal 710 may also include a CRC error check value.

The response signal 730 may also include an address 731, a function code 733, a byte count 735, and a data value 737.

The address 731 may include a communication address set in the slave communication module 200. At this time, one communication address may be set in one slave communication module 200.

The function code 733 may include a modbus function code included in the communication protocol map. For example, the function code 733 may be set to "0x05" for turning on / off the power device, "0x04" for reading the measured value of the power device, "0x03" for reading the set value of the power device, Quot; 0x06 "

The byte count 735 may include the total byte of the response signal 730. For example, the master communication module 100 can determine whether a response of the response signal 730 is normal using the byte count length.

The data value 737 may include the data value requested in the data request signal 710. For example, when requesting the model information of the power device from the data request signal 710, the slave communication module 200 transmits a response signal 730 including the model information to the data value to the master communication module 100 .

The response signal 730 may also include a CRC error check value. However, the present invention is not limited thereto.

12 is a view for explaining a data request signal and a response signal according to an embodiment of the present invention.

Referring to FIG. 12, the master communication module 100 can transmit the initial data request signal 810 to the slave communication module 200 corresponding to the communication address " 7 ". For example, the data request signal 810 includes a command to request the slave communication module 200 corresponding to the communication address " 7 " from the " 0x53 " can do.

In addition, the slave communication module 200 corresponding to the communication address 7, which has received the data request signal 810, can transmit the response signal 830 to the master communication module 100. For example, the response signal 830 transmits a total of 2 bytes in response to the function code " 0x03 " in the slave communication module 200 corresponding to the communication address " 7 & &Quot; can be included.

The master communication module 100 may transmit the secondary data request signal 850 when the initial response signal 830 is determined to be a normal response. The secondary data request signal may be the same as the initial data request signal 810.

The master communication module 100 determines that the master communication module 100 and the slave communication module 200 at the communication address 7 are in a normal state when both the primary response signal 830 and the secondary response signal 870 are determined to be normal responses. It can be determined that the communication of the mobile station 100 is normally connected. However, the present invention is not limited thereto.

13 is a view for explaining a data request signal and a response signal according to another embodiment of the present invention.

Referring to FIG. 13, a data request signal 910 according to an embodiment of the present invention includes an address 911, a function code 913, a start address 915, an address number 917, a byte count 918, And a data value 919.

Address 911 may include the communication address of the Modbus serial communication. The communication address may include a communication address having a natural number between 1 and 247. [ For example, one slave communication module may be set to one communication address.

The function code 913 may include a modbus function code included in the communication protocol map. For example, the function code may be set to "0x05" to turn on / off the power device, "0x04" to read the measured value of the power device, "0x03" to read the set value of the power device, Quot; 0x06 or 0x10 ".

The start address 915 may include an address where a set value to be changed is located in the communication protocol map when the set value is to be changed in the data request signal 910. [

The address number 917 may include the number of setting values to be changed in the communication protocol map when the setting value is to be changed in the data request signal 910. For example, the number of addresses may include two address numbers that change the current and voltage settings of the power device.

The byte count 918 may include a total byte count value of the set value when it is desired to change the set value in the data request signal 910. [

The data value 919 may include actual set value data to be changed when the set value is to be changed in the data request signal 910. [

The response signal 930 according to an embodiment of the present invention may include an address 931, a function code 933, a start address 935, and an address number 937.

The address 931 may include a communication address set in the slave communication module 200. At this time, one communication address may be set in one slave communication module 200.

The function code 933 may include a modbus function code included in the communication protocol map. For example, the function code may be set to "0x05" to turn on / off the power device, "0x04" to read the measured value of the power device, "0x03" to read the set value of the power device, Quot; 0x06 ".

The start address 935 may include an address where the changed setting value is located in the communication protocol map when the setting value is changed.

The address number 937 may include the number of setting values changed in the communication protocol map when the setting value is changed. However, the present invention is not limited thereto.

FIG. 14 is a view showing a power device setpoint change screen according to some embodiments of the present invention.

Referring to FIG. 14, the master communication module 100 may display a power device setup value change screen 150_1 on the display unit. For example, the user can input a setting value change menu of the slave communication module for which the set value of the slave communication module 200 whose communication is normally established with the master communication module 100 is to be changed. At this time, the user may change the setting value of the slave communication module to change the set value, and then change the set value to the same type name as the slave communication module to which the set value is to be changed (for example, the model name or the unique identification information of the slave communication module And a menu 150_a for selecting a plurality of slave communication modules having the slave communication module 150_a. Here, the slave communication module 200 may include a power device including a slave communication module (for example, an electronic motor protection relay (EMPR)). However, the present invention is not limited thereto.

FIG. 15 is a diagram illustrating a power device setting value change screen according to an embodiment of the present invention.

Referring to FIG. 15, the master communication module 100 may display a power device setup value change screen 150_2 on the display unit. For example, when the user changes the setting value of the slave communication module having the type name " MMP-CM-10A ", the button 150_b corresponding to the slave communication module whose setting value is changed is displayed on the display unit of the master communication module 100 ) Can be displayed separately from the other buttons. At this time, the button 150_c corresponding to the slave communication module having the same type name as " MMP-CM-10A " whose setting value has been changed can be activated to be input.

For example, the user can collectively change the same set values to a plurality of slave communication modules having the same "MMP-CM-10A" type name. At this time, the user can input a button corresponding to the slave communication module which wants to change the setting value among the activated buttons 150_c. When the user inputs a button, the activated button 150_c can display that it is selected by the user as a shade change or a button color change. Here, a method for the user to input the button displayed on the display unit may include a touch screen touch method or a mouse click method. However, the present invention is not limited thereto.

According to an embodiment of the present invention, when a button 150_b corresponding to a slave communication module for which a user has changed a set value is input for a predetermined time (for example, when the button 150_b is pressed while holding the button for 2 seconds or longer) , The button 150_c corresponding to the slave communication module having the same type name (for example, "MMP-CM-10A") as the slave communication module whose setting value is changed can be activated. However, the present invention is not limited thereto.

For example, when a user inputs a button of a plurality of slave communication modules that desire to change a set value collectively and then inputs an OK button, the same set values can be collectively changed to a plurality of slave communication modules. However, the present invention is not limited thereto.

16 is a view showing a power device set value change screen according to another embodiment of the present invention.

Referring to FIG. 16, the master communication module 100 may display a power device setup value change screen 150_3 on the display unit. For example, the master communication module 100 can display the button 150_d corresponding to the slave communication module which has attempted to change the setting value collectively, on the display unit, differently from other buttons. For example, the master communication module 100 may display the color or shade of the button differently.

For example, the master communication module 100 can distinguish between the button corresponding to the slave communication module for which the setting value has been changed and the button 150_e corresponding to the slave communication module for which the setting value has failed to be changed. At this time, the master communication module 100 can display the set value change completion button with the green button and the set value change failure button with the red button. However, the present invention is not limited thereto.

According to the present invention described above, there is an advantage that the reliability of the set value change can be improved by easily checking whether the set value of the power device is changed equally by the set value that the user intends to change.

Further, according to the present invention, in the master communication module managing a plurality of power devices, setting values of a plurality of power devices can be easily changed collectively, thereby reducing the time required for changing setting values and improving work efficiency in an industrial field There is an advantage.

Further, according to the present invention, there is an advantage that the user's convenience can be improved by displaying the power device of the same name as the set value change target power device with ease from other power devices.

In addition, according to the present invention, there is an advantage that time and cost can be saved by automatically connecting the communication of the electric power device without directly inputting the communication address by the user.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, You will understand. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive.

100: Master communication module
200: Slave communication module

Claims (7)

A method of changing a set value of an electric power system performed by a master communication module connected to a plurality of slave communication modules and a serial communication network,
Transmitting a data request signal including a predetermined communication address using the serial communication network and receiving a response signal corresponding to the data request signal from the slave communication module corresponding to the communication address;
Determining whether communication is normally established between the master communication module and the slave communication module based on the data request signal and the response signal;
Transmitting the first set value to a slave communication module in which a set value change event in which a first set value is input from a user among slave communication modules in which communication is normally established is generated;
Receiving a second set value corresponding to the first set value stored in the slave communication module from the slave communication module in which the set value change event has occurred;
Determining whether the first set value and the second set value are the same; And
A slave communication module having the same model information as the model information of the slave communication module in which the set value change event has occurred and the slave communication module having different model information from the slave communication module ≪ / RTI >
Wherein the step of transmitting the first set value comprises:
And changing the set value of the slave communication module having the same model information as the model information of the slave communication module in which the set value change event has occurred to the first set value
How to change power device setting values.
The method according to claim 1,
Wherein the step of determining whether the first set value and the second set value are identical,
Determining whether or not the setting items or the setting values of the first set value and the second set value are the same
How to change power device setting values.
3. The method of claim 2,
Wherein the step of determining whether the first set value and the second set value are identical,
Determining whether the set value change success of the slave communication module in which the set value change event has occurred is determined based on whether the first set value and the second set value are the same or not
How to change power device setting values.
The method of claim 3,
Wherein the step of determining whether the first set value and the second set value are identical,
And indicating that the set value change of the slave communication module in which the set value change event has occurred is successful if the first set value and the second set value are identical
How to change power device setting values.
delete delete The method according to claim 1,
Wherein the step of transmitting the first set value comprises:
And changing the set value of the slave communication module input from the user to the first set value among the slave communication modules having the same model information as the model information of the slave communication module in which the set value change event has occurred
How to change power device setting values.

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