• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The present invention relates to the loader communication operation of the inverter as a motor drive device, and more particularly, to the inverter and loader and computer communication connection operation to operate the inverter and the loader and computer communication in one communication channel, the communication of the inverter loader In the connection operation method, the connection input signal is set to 0 when the inverter and the loader are connected, and the connection input signal is 1 when the inverter and the computer are connected. When the data is sent to the loader at regular intervals, the key state is input and processed, and the connection input signal state is 1, the slave mode enters the slave mode and waits for data reception from the computer. Is done.
    公开号:KR19980052674A
    申请号:KR1019960071693
    申请日:1996-12-24
    公开日:1998-09-25
    发明作者:김철오
    申请人:이종수；엘지산전 주식회사；
    IPC主号:
    专利说明:

    How to operate communication connection of inverter loader
    BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the loader communication operation of an inverter which is an electric motor drive device, and more particularly, to an inverter, a loader, and a computer communication connection operation for operating the inverter and the loader, and the computer communication in one communication channel.
    Recently, the use of inverters is increasing due to the rapid development of semiconductor technology and the economics and robustness of induction motors. In addition, as the cost of high-speed processors such as DSP (Digital Signal Processor), which is capable of high-speed processing, has decreased, high-level algorithms can be implemented in general-purpose inverters, thereby improving controllability. Thus, the unit price of the product can be lowered and downsized.
    In general, the loader is used for the operation of the inverter, the change of parameters, and the like, and serial communication is used to extend the distance between the inverter body and the loader. At present, not only communication with a loader but also communication connection with a higher level computer is becoming common.
    In the conventional inverter main body and the loader, as shown in FIG. 1, the transmission signal and the reception signal of the serial communication are connected by the loader communication porter 4, and the inverter main body 1 becomes the master, and the loader 2 becomes a slave at a predetermined interval. The display data is transmitted and the loader 2 is operated in response.
    FIG. 2 shows a structure in which the loader 2 and the computer 3 are simultaneously connected to the inverter main body 1, and in order to simultaneously connect the inverter 1, the inverter 1 becomes a master and is loaded through the loader communication port 4. In order to communicate with (2), and to communicate with computer 3 again, it should be provided in the form of communication option board with a separate port such as computer communication port 5 or have another communication port in the main body. .
    3 shows a structure in which the computer 3 is connected to the loader communication port 4 of the inverter 1 and used when there is only one communication port or two communication ports cannot be obtained to reduce the size of the inverter. .
    4 shows a data transmission / reception relationship in which the loader 2 responds when the inverter main body 1 of FIG. 1 becomes a master and transmits display data to the loader 2 at regular intervals. At this time, the inverter main body 1 becomes a master, sends desired display data to the loader 2, receives a response or key data from the loader 2, and processes it. In this way, the inverter main body 1 becomes a master so that even when there is a change in the inverter sequence, there is independence without changing the loader program.
    However, when the computer 3 is connected to the inverter main body 1 and operated, the loader communication port 4 and the computer communication port 5 separate from the loader communication port 4 should be provided as shown in FIG. When only one or two communication ports cannot be provided to reduce the size of the inverter, as shown in FIG. 3, the computer 3 must be connected to the loader communication port 4 and operated. At this time, as shown in FIG. 4, since the inverter main body 1 becomes a master and continuously transmits display data at a predetermined interval P, the computer 3 connected instead of the loader 2 uses the data to obtain desired data. You need to obtain the data you want by emulating the press of the key. At this time, in order to obtain desired data, a number of key emulations have to be performed, and the data is burdened with the program, which causes a problem of slowing down the processing speed.
    In the present invention, when the computer 3 is connected to the loader communication port 4 for processing, the program burden of the computer caused by the inverter 1 being a master and continuously transferring data, and the resulting decrease in processing speed, etc. In order to solve the problem of the inverter, the loader communication port (4) of the inverter 1 by using the loader (2) and the computer (3) easily implements the connection speed of the process, and only one communication port of the inverter In addition to reducing the size, it manages only one communication port, making it easier to manage the inverter communication program, and when the computer 3 is connected to the inverter 1, the computer 3 becomes the master, making it easier to implement computer programs. It is an object to make it possible to obtain desired communication data at high speed.
    In order to achieve the above object, in the operating method of the present invention, the connection input signal is set to 0 when the inverter and the loader are connected, and the connection input signal is set to 1 when the inverter and the computer are connected. If is 0, the inverter main body is in master mode and sends data to the loader at regular intervals, receives and processes the key status. If the connection input signal status is 1, the inverter enters slave mode and waits for data reception from the computer. If it comes, it is made to respond to the request.
    1 is a diagram showing a connection between a conventional inverter and a loader.
    Fig. 2 is a diagram showing a connection between an inverter, a loader and a computer using two conventional communication ports.
    3 is a view showing a connection between an inverter and a computer using a conventional loader terminal.
    4 is a diagram illustrating data transmission and reception between a conventional inverter and a loader.
    5 is a view showing a connection between an inverter and a loader according to the present invention.
    Fig. 6 is a diagram showing a connection between an inverter and a computer according to the present invention.
    7 is a diagram showing data transmission and reception between an inverter and a computer of the present invention.
    8 is a flowchart of a communication process operating method of an inverter main body according to the present invention;
    9 is a view showing a connection between an inverter and a plurality of devices using a plurality of connection input signals according to the present invention.
    In the present invention, when the inverter 11 and the loader 12 are connected, the connection input signal is set to 0 as shown in FIG. 5, and when the inverter 11 and the computer 13 are connected, as shown in FIG. Set the signal to 1 state.
    In the state in which the inverter 11 and the loader 12 are connected, the inverter 11 becomes a master, has control of communication, and continuously transmits display data to the loader 12 at a predetermined interval as in the prior art and receives the state of the key. Different data is displayed according to the transmission.
    In addition, when the computer 13 is connected to the inverter 11, the inverter 11 becomes a slave and the control right of communication is lost. Therefore, the inverter 11 continuously waits until a communication request is received from the computer 13, and as shown in FIG. Similarly, when a request for reading data from the computer 13 comes, the inverter 11 sends data, performs a write operation on the request for writing data of the computer 13, and sends a response.
    8 shows the flow of the communication process of the inverter main body 11. When the connection input state is 0, it shows that the inverter main body 11 is connected to the loader 12. As shown in FIG. At this time, the inverter main body 11 enters the master mode, transmits data to the loader 12 at regular intervals, receives the key state from the loader 12, and processes it. When the connection input signal state is 1, the inverter main body 11 is connected to the computer 13. At this time, the inverter main body 11 enters the slave mode and waits for data reception from the computer 13, and when a request comes in, it responds to the request.
    According to the present invention, when the inverter 11 and the computer 13 are connected, unlike the conventional one, since the computer 13 becomes a master, since the desired data is selectively imported when necessary, software burden can be reduced. It is possible to improve the data processing speed.
    9 shows an example in which a plurality of connection input signals can be used to communicate with the other device 10 in addition to the loader / computer. To do it.
    In this case, the combination of the input signals when using two input signals and the corresponding connection device are shown in Table 1.
    Input combinationConnection device 0Loader OneFirst device 10Second device 11computer
    The present invention facilitates the connection between the loader and the computer by using the loader communication port of the inverter, thereby increasing the processing speed, and reducing the size of the inverter by using only one communication port, and managing only one communication port. The program management is easy and the computer becomes the master when the computer is connected to the inverter, making it easier to implement the computer program, so that the desired communication data can be obtained at high speed.
    权利要求:
    Claims (1)
    [1" claim-type="Currently amended] In the communication operation method between an inverter having a communication port and a peripheral device,
    After the inverter receives the connection input signal input from the peripheral device 10 through the communication port, the inverter operates itself as a master according to the level of the connection input signal described above, and transmits the peripheral device to the slave device. A method of operating a communication between an inverter and a peripheral device, comprising: operating as a master or operating a peripheral device which transmits a connection input signal to the inverter itself as a slave.
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    同族专利:
    公开号 | 公开日
    KR100304811B1|2002-01-09|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    1996-12-24|Application filed by 이종수, 엘지산전 주식회사
    1996-12-24|Priority to KR1019960071693A
    1998-09-25|Publication of KR19980052674A
    2002-01-09|Application granted
    2002-01-09|Publication of KR100304811B1
    优先权:
    申请号 | 申请日 | 专利标题
    KR1019960071693A|KR100304811B1|1996-12-24|1996-12-24|Communication connection managing method of inverter key pad|
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