KR101810196B1 - Communication module in inverter - Google Patents

Communication module in inverter Download PDF

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Publication number
KR101810196B1
KR101810196B1 KR1020160025672A KR20160025672A KR101810196B1 KR 101810196 B1 KR101810196 B1 KR 101810196B1 KR 1020160025672 A KR1020160025672 A KR 1020160025672A KR 20160025672 A KR20160025672 A KR 20160025672A KR 101810196 B1 KR101810196 B1 KR 101810196B1
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KR
South Korea
Prior art keywords
register
inverter
address
storing
communication module
Prior art date
Application number
KR1020160025672A
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Korean (ko)
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KR20170103206A (en
Inventor
임재환
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엘에스산전 주식회사
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Priority to KR1020160025672A priority Critical patent/KR101810196B1/en
Publication of KR20170103206A publication Critical patent/KR20170103206A/en
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F9/00—Arrangements for program control, e.g. control units
    • G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
    • G06F9/30—Arrangements for executing machine instructions, e.g. instruction decode
    • G06F9/30098—Register arrangements
    • G06F9/30105—Register structure
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/40—Bus networks
    • H04L2012/40208—Bus networks characterized by the use of a particular bus standard
    • H04L2012/40215—Controller Area Network CAN

Abstract

The communication module of the inverter is started. The communication module of the present invention includes a first register for storing an address of an inverter register to be read or written, a second register for storing data to be read or written and a command for reading or writing And a third register for storing the second register.

Description

COMMUNICATION MODULE IN INVERTER < RTI ID = 0.0 >

The present invention relates to a communication module of an inverter.

Generally, an inverter used in factory automation (FA) communicates with other devices in various communication methods. Such factory automation communication methods include protocols such as PROFINET, MODBUS, and Ethercat.

PROFInet is an industrial open network standard for utilizing Ethernet communication technology, which is used as office communication infrastructure technology, as production automation technology. MODBUS is a serial communication protocol for PLC (programmable logic controller, PLC) Automation Technology 'and is an industrial Ethernet protocol.

In this way, for communication of the inverter, a separate communication module can be detachably attached to the inverter.

FIG. 1 is an exemplary diagram for explaining a manner in which a communication module is implemented in an inverter, and FIG. 2 is an exemplary diagram illustrating a connection relationship between the communication module and an inverter in FIG.

The communication module 200 is detachably installed in the inverter 100 and can communicate with the inverter 100 through the first communication unit 230 using a CAN (Controller Area Network) (HMI) 300 and the second communication unit 240 through an Ethernet method such as 100 Base TX.

In the inverter system configured as described above, the communication module 200 accesses the register of the inverter 100 via the CAN interface. In general, the inverter 100 includes hundreds of registers 110.

Since the data of the register 110 of the inverter 100 is accessed by the 1: 1 addressing method in the case of the conventional communication module 200, the communication module 200 sets the address of the register 110 of the inverter 100 to The same number of address registers 220 as the register 110 of the inverter 100 should be provided.

In this configuration, the control unit 210 interprets the address assigned to the communication packet and performs a read or a write operation on the register 110 of the corresponding inverter 100. That is, in order to read the data stored in the second register, the address register corresponding to the second register is checked, the address of the second register is read, and then the data of the corresponding register is read.

However, in the conventional system as described above, since the address relationship between the register 110 of the inverter 100 and the communication module 200 is 1: 1, the communication module 200 sets the address register in the register of the inverter 100 In addition, when the inverter 100 is changed, there is a problem that the register mapping of the changed inverter must be performed again.

An object of the present invention is to provide an inverter communication module capable of reducing the number of address registers of a communication module and accessing a register of an inverter without requiring address mapping even when the inverter is changed.

According to an aspect of the present invention, there is provided a communication module including: a first register for storing an address of an inverter register to perform writing; A second register for storing data to be written; A third register for storing a command for writing; And a controller for transmitting the address and data to the inverter according to a command stored in the third register using the address stored in the first register and the data stored in the second register.

The communication module of one embodiment of the present invention may further include a fourth register that stores a state resulting from the writing.

In one embodiment of the present invention, the control unit may store, in the fourth register, a status message for deleting the previous result after storing the address and data.

In one embodiment of the present invention, the control unit may specify a state of whether writing to the fourth register is successful or failed, according to a result of an operation received from the inverter.

According to another aspect of the present invention, there is provided a communication module including: a first register for storing an address of an inverter register to be read; A second register for storing the read data; A third register for storing a command for reading; And a controller for transmitting the address to the inverter according to a command stored in the third register using the address stored in the first register.

The communication module of an embodiment of the present invention may further include a fourth register for storing a state as a result of reading.

In one embodiment of the present invention, the control unit may store, in the fourth register, a status message for deleting the previous result after storing the address.

In one embodiment of the present invention, the control unit may designate a state of whether or not the read is successful in the fourth register, according to the result of the operation received from the inverter.

In one embodiment of the present invention, when the data corresponding to the address is received from the inverter, the control unit may store data in the second register.

The present invention has the effect of making it possible to access the register of the inverter without reversing the mapping of addresses even when the mounted inverter is changed.

Therefore, it is possible to attach and detach to various inverters without changing the program of the communication module, so that the convenience of the user is improved.

1 is an exemplary diagram illustrating a manner in which a communication module is generally implemented in an inverter.
2 is an exemplary diagram for explaining a connection relationship between the communication module and the inverter of FIG.
3 is a block diagram schematically illustrating a communication module according to an embodiment of the present invention.
4 is a flowchart for explaining a writing operation of the control unit of the communication module of the embodiment of the present invention.
5 is a flowchart for explaining a reading operation of the control unit of the communication module according to the embodiment of the present invention.

While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and will herein be described in detail. It should be understood, however, that the invention is not intended to be limited to the particular embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

3 is a schematic diagram for explaining a communication module of an embodiment of the present invention, which is connected to the inverter 1.

As shown in the figure, the inverter 1 may be configured to include a plurality of registers 10. The inverter 1 includes various components such as a rectifier portion, a smoothing portion, and an inverter portion including a switching element, in addition to the plurality of resistors 10, but a description of components not related to the present invention will be omitted.

The communication module 2 of the embodiment of the present invention can communicate with the inverter 1 through the first communication unit 40 in a control area network (CAN) manner, for example, Lt; RTI ID = 0.0 > 50 < / RTI > For example, the communication module 2 of the present invention may be a PROFInet communication module, but the present invention is not limited thereto, and it can be a communication module defined by various protocols. It is obvious to those who have knowledge.

The communication module of the embodiment of the present invention may include a register unit 20 and a control unit 30. The register unit 20 includes an address register 21, A command register 22, a status register 24, and a command register 23. The communication module 2 of the embodiment of the present invention may further include various components in addition to the components described above, but a description of components not related to the present invention will be omitted.

The address register 21 may store the address of the register 11 of the inverter 1 to read or write. The address of the register 11 of the inverter 1 may be provided from an administrator server (not shown) connected by a network or may be provided by input by an administrator's human-machine interface (HMI). The address of the register 11 of the inverter 1 may be stored in the address register 21 of the communication module 2 in various manners, for example.

The data register 22 can store a read value or a write value when performing a read or a write. The command register 23 may store a command indicating whether to perform reading or writing. The status register 24 may store the status value of the result of the read or write operation.

As described above, the communication module 2 of the embodiment of the present invention does not include the address register mapped in the 1: 1 manner with the register 10 of the inverter 1 by employing the indirect addressing method, The address mapping is not performed separately even when the inverter is changed.

The control unit 30 reads the register 10 of the inverter 1 by a command received from a host device (not shown) via the second communication unit 50, for example, as a micro controller unit (MCU) Or write operation.

FIG. 4 is a flowchart illustrating a write operation of a control unit of a communication module according to an embodiment of the present invention, and FIG. 5 is a flowchart illustrating a read operation of a control unit of the communication module according to an embodiment of the present invention. In the description of the present invention, the PNU [1000] is the address register 21, the PNU [1001] is the data register 22, the PNU [1002] is the command register 23, 24). However, the present invention is not limited thereto.

4, the controller 30 stores the address of a register to be written into the address register PNU [1000] 21 in step S41, and the data register PNU [1001] 22 (Step S42).

Thereafter, the control unit 30 can store 0 in the status register PNU [1003] 24 (S43). Storing a '0' in the status register PNU [1003] (24) may mean deleting the previous result. However, the present invention is not limited to this number, and various numbers may be set in advance.

A write command can be stored in the command register PNU [1002] 23 (S44). In an embodiment of the present invention, the number corresponding to the write command may be designated as '1', but the present invention is not limited thereto.

Thereafter, the control unit 30 checks whether or not the completion flag received from the control unit (not shown) of the inverter 1 is stored in the status register PNU [1003] 24, (S45). The completion flag may be a value other than '0', and may be specified in various numbers depending on the system. That is, in one embodiment of the present invention, the completion flag may be set to '1' if the write operation is successfully performed in the designated register, or '-1' if the write operation is not successful . However, it should be understood that the present invention is not limited thereto.

A case where it is desired to write a frequency command which is one of the inverter parameters in the second register among the registers 10 of the inverter 1 will be described as an example.

When receiving a frequency command to be stored in the second register from an upper level control device (not shown), the control unit 30 stores the address of the second register to be written into the address register PNU [1000] 21, The data register PNU [1001] (22) can store the command frequency for writing.

The control unit 30 stores 0 in the status register PNU [1003] 24 and receives and stores 1 corresponding to the write command in the command register PNU [1002] 23, whereby the control unit 30 Address and data to the inverter (1) through the first communication unit (40). At this time, the address and the data may be transmitted in a predetermined format.

Thereafter, when the completion flag indicating success or failure received from the control unit (not shown) of the inverter 1 is stored in the status register PNU [1003] 24, the write operation can be terminated.

5, the control unit 30 stores the address of a register to perform the read operation of the inverter 1 in the address register PNU [1000] 21 (S51), and the state register PNU [1003] 0 " may be assigned to the entry 24 to delete the previously stored result (S52).

Thereafter, the control unit 30 can store the read command in the command register PNU [1002] 23 (S43). In an embodiment of the present invention, the number corresponding to the read command is '2', but the present invention is not limited thereto.

The control unit 30 checks whether or not there is a completion flag (a value other than 0) indicating the success or failure of reading received from the control unit (not shown) of the inverter 1 in the status register PNU [1003] If not, it can wait and read the value stored in data register PNU [1001] (22) when it is completed.

A case where it is desired to read the inverter slip frequency stored in the first register among the registers 10 of the inverter 1 will be described as an example.

When the control unit 30 receives a read command for reading the slip frequency of the inverter 1 stored in the first register from an upper level control device (not shown), the control unit 30 sets a register , And 0 can be assigned to the status register PNU [1003] (24).

Thereafter, the control unit 30 receives the data corresponding to the read command in the command register PNU [1002] (23) from the host controller (not shown) and stores the data in the register from the inverter 1 It is stored in the data register PNU [1001] 22 and the status register PNU [1003] 24 is checked to see if there is a completion flag (a value other than 0) received from the inverter 1, When completed, the sleep frequency stored in the data register PNU [1001] 22 can be read. The control unit 30 may transmit the data of the inverter 1 stored in the data register 22 to the host control unit through the second communication unit 50. [

As described above, in the communication module of the embodiment of the present invention, when the command is stored in the command register 23, the communication module instructs the command register 23 using the address of the address register 21 and the data of the data register 22 A control unit (not shown) of the inverter 1 accesses the register 10 to perform a read or a write operation and sends the result of the operation to the communication module (not shown) 2), the result can be assigned to the status register 24.

According to the communication module of the embodiment of the present invention, even when the mounted inverter is changed, it is possible to access the register of the inverter without reversing the mapping of addresses.

While the invention has been shown and described with reference to certain preferred embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. Accordingly, the true scope of the present invention should be determined by the following claims.

1: Inverter 2: Communication module
10: Register 21: Address register
22: Data register 23: Command register
24: status register 30:
40, 50:

Claims (9)

A communication module of an inverter for writing data into a register of any one of a plurality of inverter registers,
A first register for storing an address of one of the inverter registers to be written;
A second register for storing data to be written;
A third register for storing a command for writing;
A fourth register for storing a state of any one of the first register to the third register as a result of writing; And
Storing an address of an inverter register to perform the write in the first register, storing data to be written in the second register, and storing a status message in the fourth register to delete the previous result, A control unit for transmitting the address and data to the inverter according to a command stored in a third register and designating a flag indicating a state of success or failure to be stored in the fourth register according to an operation result received from the inverter Comprising a communication module.
delete delete delete A communication module of an inverter for reading data stored in an inverter register of any one of a plurality of inverter registers,
A first register for storing an address of any one of the inverter registers to be read;
A second register for storing the read data;
A third register for storing a command for reading;
A fourth register for storing a state of one of the first to third registers as a result of reading; And
A status register for storing an address of one of the inverter registers to perform the reading in the first register and a status message for deleting the previous result in the fourth register; To the inverter and designates a flag indicating a status of success or failure to be stored in the fourth register according to an operation result received from the inverter.
delete delete delete 6. The apparatus of claim 5,
And stores data received in the second register when data corresponding to the address is received from the inverter.
KR1020160025672A 2016-03-03 2016-03-03 Communication module in inverter KR101810196B1 (en)

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Application Number Priority Date Filing Date Title
KR1020160025672A KR101810196B1 (en) 2016-03-03 2016-03-03 Communication module in inverter

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KR101810196B1 true KR101810196B1 (en) 2017-12-18

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