JP2009213333A - Inverter apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To set a plurality of parameter groups including parameters which are optionally selected by a user and easily select one of the plurality of parameter groups. <P>SOLUTION: An inverter apparatus 1 stores the plurality of parameter groups A to D in a data memory area 12 of a flash memory 10 incorporated in a microcomputer 2, and executes a parameter group reading process for reading a selected parameter group from the flash memory 10 and writing the parameter group in a RAM 9 and a writing process for writing the parameter group of the RAM 9 in a selected parameter group storing area of the flash memory 10. The inverter apparatus coordinates a setting value of the parameter read from the data memory area 12 with an address to write the parameter in an EEPROM 3. When a power is turned on, the inverter apparatus reads all parameters from the EEPROM 3 and writes them in the RAM 9. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an inverter device including a microcomputer that performs processing operations related to parameters.

  Since the inverter device is incorporated and used in equipment for various uses in various industries, it has a large number (for example, several hundreds) of parameters and can be operated in various ways. The parameter is a software setting item for determining the operation and function of the inverter device. The parameters of the inverter device are standard set values when the inverter device is shipped from the inverter manufacturer, so there are many parameters to use the inverter device built into each device in a state suitable for that device. It is necessary to select a required parameter from among the parameters and reset the value according to the application.

  In order to easily set parameters, the conventional inverter device has a function of displaying a group of a specific parameter group when a specific parameter is selected, a function of changing an initial value of the specific parameter, and the like. However, with these conventional functions, the degree of freedom is small, and when it is necessary to change parameters other than the predetermined parameters, the necessary parameters are selected from a large number of parameters other than the parameter group and the settings are changed. There was a need.

Recently, as disclosed in Patent Document 1, an inverter device has been proposed that has a function capable of adding and deleting arbitrary parameters and can configure a parameter group having a high degree of freedom. However, in the inverter device described in Patent Document 1, parameter data is stored in the EEPROM, and parameter groups that can be used for each application of the fan, the pump, and the winding device are also stored in the EEPROM. In such a configuration, in order to reduce the memory size of the EEPROM, there is only one parameter group to which parameters can be added and deleted.
JP 2003-259688 A

  The functions of the inverter device used in each device are limited, and when incorporating the inverter device into the device, for example, about 30 parameters may be set to values optimum for the device to be incorporated. If the types (types) of equipment to be incorporated are the same, the necessary parameters and their setting values will be the same. However, since equipment manufacturers usually produce multiple types of equipment, the inverter device has It is necessary to set parameter groups and initial values for each of a plurality of types.

  On the other hand, when the inverter device described in Patent Document 1 having only one parameter group in which parameters can be added and deleted is used, after the inverter device is incorporated into various types of devices, each type of device It is necessary to re-select the parameters necessary for the above and set the optimum initial values for each parameter.

  The present invention has been made in view of the above circumstances, and an object thereof is to provide an inverter device that can set a plurality of parameter groups including parameters that can be arbitrarily selected by a user and can easily select one of the plurality of parameter groups. There is to do.

In order to achieve the above object, an inverter device according to claim 1 comprises:
A rewritable non-volatile memory for storing a set value of each parameter in association with identification information for a plurality of parameters, and a plurality of parameter groups including one or a plurality of parameters selected from the plurality of parameters A flash memory in which a data storage area is set, and a microcomputer having a RAM that stores the plurality of parameters read from the nonvolatile memory and is referred to when an inverter operation is performed,
Parameter processing means for causing the microcomputer to execute a processing operation relating to the parameter,
Parameter group selection means for selecting a parameter group to be read or / and written from a plurality of parameter groups;
Among the parameters stored in the RAM, the identification information and setting values of the parameters constituting the parameter group are written in the data storage area of the flash memory reserved for the parameter group selected by the parameter group selection means Parameter group writing means;
A parameter group reading unit that reads identification information and setting values of parameters constituting the parameter group selected by the parameter group selection unit from the data storage area of the flash memory and writes the information to the RAM; .

  According to this configuration, the rewritable non-volatile memory which is difficult to increase the memory capacity due to high cost, and stores the setting values of a plurality of parameters of the inverter device in association with the identification information like the conventional one. To do. On the other hand, a flash memory for storing data in a microcomputer that easily secures a sufficient memory capacity stores a plurality of parameter groups including one or a plurality of parameters selected from a plurality of parameters. The parameter group writing means reads the selected parameter group from the RAM and writes it to the data storage area of the flash memory, and the parameter group reading means reads the selected parameter group from the data storage area of the flash memory and writes it to the RAM. .

  According to the present invention, a plurality of parameter groups including parameters that can be arbitrarily selected by the user can be set together with the set values of the respective parameters, and one of the plurality of parameter groups can be easily selected and used.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a schematic configuration diagram relating to a control unit in the inverter device. A main circuit unit including a converter unit configured by connecting a diode in a three-phase bridge and an inverter unit configured by connecting a switching element in a three-phase bridge is not shown. The control unit of the inverter device 1 includes a microcomputer 2 (hereinafter referred to as a microcomputer 2), an EEPROM 3, a display unit 4 (corresponding to a display means) composed of, for example, a 4-digit 7-segment LED, and a drive circuit 5 for driving the display unit 4. , An operation unit 6 including a plurality of keys 6a to 6f, an input interface 7, and the like. The control unit composed of these is disposed on the printed wiring board and accommodated in the housing. FIG. 2 is a front view of the inverter device 1.

  In the microcomputer 2, in addition to the CPU 8, RAM 9, and flash memory 10 shown in FIG. 1, an A / D converter, a serial communication circuit, various timers / counters, various interface circuits, etc. (not shown) are configured in a single chip. The flash memory 10 is divided into a software memory area 11 in which a program is stored and a data memory area 12 (corresponding to a data storage area) in which data is stored.

  The software memory area 11 is a software storage area in which a control program for executing motor control processing, parameter setting change processing, display processing for the display unit 4, input / output processing via the operation unit 6 or the communication circuit, and the like is written. 11a is secured. A control program for performing parameter setting change processing, display processing, and input / output processing, together with the CPU 8, corresponds to parameter processing means for causing the microcomputer 2 to execute processing operations relating to parameters. In the data memory area 12, parameter group storage areas 12 a, 12 b, 12 c, and 12 d in which a plurality of (for example, four) parameter groups A, B, C, and D to be described later are stored in units of a predetermined size block Is secured.

  The EEPROM 3, which is a rewritable nonvolatile memory, stores the setting values of all the parameters of the inverter device 1 in association with the addresses. The parameter is a software setting item for determining the operation and function of the inverter device 1 in executing the control program. Since the inverter device 1 is mounted on various devices to enable various operations (operation states), the number of parameters reaches several hundreds. Each parameter is assigned, as identification information, an address (0000, 0001, 0002,..., 0999) and a title (F000, F001, F002,..., F999) corresponding to name data. In order to distinguish individual parameters, the address may be a continuous number, and the title may be a character, symbol or the like that can be displayed on the display unit 4.

  Next, the parameter setting changing operation among the operations of the inverter device 1 will be described with reference to FIGS. When power is supplied from a three-phase AC power source, the inverter device 1 operates by generating a necessary control power source by an internal power circuit. The CPU 8 of the microcomputer 2 starts the operation according to the flowchart shown in FIG. 3 when the power-on or the reset state associated with the reading / writing of the parameter group described later is released.

  First, in step S 1, “Init” indicating the initialization state is displayed on the display unit 4, and then all parameters are read from the EEPROM 3 and written to the RAM 9. Thereafter, in step S2, execution of various processes such as a motor control process, a parameter setting change process, a display process, a communication process, and an input / output process is started while referring to the parameters stored in the RAM 9. In step S3, the standard monitor mode is set, and the output frequency is displayed on the display unit 4. The operation / stop and setting of the command frequency are performed based on any one of the operation on the operation panel key, an external signal given to a terminal block (not shown), and a reception signal by serial communication. Here, a case where the operation panel key is operated will be described.

  The CPU 8 determines key input in step S4. When the RUN key 6a is pressed, the motor accelerates to the operation command frequency and shifts to a constant speed operation (step S6). Thereafter, when the STOP key 6b is pressed, the motor decelerates and stops (step S7). When the up key 6e or the down key 6f is pressed in the standard monitor mode, the operation command frequency, which is one of the parameters stored in the RAM 9, is increased or decreased accordingly (steps S8 and S9). When the ENT key 6d is pressed after the up key 6e or the down key 6f, the set value of the operation command frequency stored in the RAM 9 is written into the EEPROM 3.

  When the MODE key 6c is pressed once in the standard monitor mode, the mode shifts to the parameter setting mode in step S5. The parameter setting mode is a mode for setting parameters as will be described in detail below. When the MODE key 6c is pressed once in the parameter setting mode, the state monitoring mode is entered. The state monitor mode is a mode for monitoring various set frequencies, output voltages, output currents, terminal information, and the like. When the MODE key 6c is pressed once in the state monitor mode, the mode returns to the standard monitor mode.

  Hereinafter, the parameter setting mode will be described. The parameter F900 at the address 0900 is a read command parameter provided to read the selected parameter group from the data memory area 12 (parameter group storage areas 12a to 12d) of the flash memory 10 to the RAM 9. The parameter F900 is also a display control parameter for switching between display for all parameters and display for only the parameters constituting the parameter group. The display processing by the CPU 8 corresponds to display control means in the present invention.

  If the CPU 8 determines in step S10 that the read command parameter F900 is set to 0 (that is, the read target parameter group is not selected), all the parameters are sequentially displayed according to the key operation as in the conventional configuration. This is displayed on the part 4 (step S11). That is, when 0 is set in the read command parameter F900, the parameter title “F000” having the smallest address among all parameters is displayed on the display unit 4 as shown in FIG. 4A, and then the up key 6e. Each time is pressed, the titles of parameters “F001”, “F002”,... Having the next largest address are sequentially displayed on the display unit 4. When the down key 6f is pressed, the title of the parameter having the next smallest address is displayed.

  When the ENT key 6d is pressed while the parameter title is displayed on the display unit 4, the set value of the parameter is displayed on the display unit 4 as shown in FIG. Here, when the up key 6e or the down key 6f is pressed, the value of the parameter stored in the RAM 9 is increased or decreased by a predetermined value, and when the ENT key 6d is subsequently pressed, the parameter stored in the RAM 9 is increased. Is written in the EEPROM 3. At this time, in order to indicate that the setting value has been changed and stored, the title of the parameter and the setting value are alternately displayed twice on the display unit 4 at predetermined intervals.

  If the ENT key 6d is pressed without pressing the up key 6e and the down key 6f while the parameter setting value is displayed on the display unit 4, the next address is displayed as shown in FIG. The title of the parameter it has is displayed on the display unit 4. Accordingly, when the parameter value is not changed, the ENT key 6d is repeatedly pressed, so that the title of the parameter, the value thereof, the title of the parameter having the next address, the value thereof, the title of the parameter having the next address, The display changes like that value.

  If the CPU 8 determines that any value from 1 to 4 is set in the read command parameter F900 in step S10 after the transition to the parameter setting mode, the process proceeds to step S12, and the RAM 9 forms a parameter group. A display process for displaying only the parameters is executed. The parameter group is a set of one or a plurality of parameters (29 in this embodiment) selected from a plurality of parameters.

  Since the inverter device 1 is used by being incorporated into various types (types) of equipment, the parameters required for operation and the set values of the parameters are different for each type of equipment to be incorporated. Therefore, necessary parameters are selected according to each type (for example, four types), and the parameter groups A to D are configured together with the set values, and the data memory area 12 (parameter group) of the flash memory 10 of the microcomputer 2 is previously set. The data is written in the storage areas 12a to 12d). Then, by reading the parameter group suitable for the device in which the inverter device 1 is incorporated into the RAM 9 and operating it, the inverter device 1 can be used for various types of devices although it is a single inverter device 1.

  In the RAM 9, the parameters constituting the parameter group are designated by the values of 29 selection parameters (corresponding to the indirect designation parameters) having addresses 0901 (F901) to 0929 (F929) provided for indirect designation. Consists of parameters with addresses.

  FIG. 5 shows an example of data stored in the RAM 9 and the EEPROM 3. The data stored in the RAM 9 and the data stored in the EEPROM 3 are identical except when the ENT key 6d is not pressed after changing the parameter value. The first parameter constituting the parameter group in the RAM 9 is the parameter F001 at the address 0001 indicated by the setting value of the selection parameter F901 at the address 0901, and its value is 1. The second parameter constituting the parameter group is the parameter F101 of the address 0101 indicated by the setting value of the selection parameter F902 of the address 0902, and the value thereof is 11. The third parameter constituting the parameter group is the parameter F201 at the address 0201 indicated by the set value of the selection parameter F903 at the address 0903, and its value is 21. The 29th parameter constituting the parameter group is the read command parameter F900 of the address 0900 designated by the set value of the selection parameter F929 of the address 0929, and the value thereof is 1.

  When displaying the parameter group in step S12, the CPU 8 first displays the title “F001” of the parameter at the address 0001 designated by the set value of the selected parameter F901 on the display unit 4, as shown in FIG. Thereafter, each time the up key 6e is pressed, the titles “F101”, “F201”,..., “F900” of the parameters having addresses designated by the selection parameters F902, F903,. . When the down key 6f is pressed, the titles are displayed in the reverse order. Parameters other than those constituting the parameter group are not displayed. When the up key 6e is further pressed after displaying the title “F900” of the parameter having the address indicated by the setting value of the selection parameter F929, the parameter having the address indicated by the setting value of the selection parameter F901. The title “F001” may be displayed.

  Similarly to the case where 0 is set in the read command parameter F900, when the ENT key 6d is pressed while the title of the parameter is displayed on the display unit 4, the set value of the parameter is displayed on the display unit 4. At this time, when the up key 6e or the down key 6f is pressed, the value of the parameter is increased or decreased by a predetermined value. When the ENT key 6d is pressed, the value of the parameter stored in the RAM 9 is written to the EEPROM 3, and the title and setting value of the parameter are alternately displayed twice on the display unit 4 at a predetermined cycle. If the ENT key 6d is pressed without pressing the up key 6e and the down key 6f while the parameter setting value is displayed on the display unit 4, the title of the next parameter constituting the parameter group is displayed on the display unit. 4 is displayed.

  The CPU 8 proceeds to step S13 after the display processing of steps S11 and S12, and determines whether or not there is a transition to another mode. Here, when there is a mode change, the mode is shifted to, and when there is no mode change, the parameter setting mode is maintained and the process returns to step S10. In the parameter setting mode, the CPU 8 executes a parameter group reading process and a parameter group writing process which will be described later.

  Next, a parameter group reading process of reading out a selected parameter group from the parameter groups A to D stored in the parameter group storage areas 12a to 12d of the flash memory 10 of the microcomputer 2 and writing it to the RAM 9 will be described. FIG. 7 shows a memory map of the parameter group storage area 12a of the flash memory 10 for the data shown in FIG. In the parameter group storage area 12a, addresses and set values of 29 parameters constituting the parameter group A are stored. The same applies to the other parameter group storage areas 12b to 12d.

  In the addresses 0000 and 0001 of the parameter group storage area 12a, a value corresponding to the address 0901 of the RAM 9 (value of the selection parameter F901 (parameter address)) and a value corresponding to the address of the RAM 9 indicated by the value (parameter) Is set). The addresses 0002 and 0003 of the parameter group storage area 12a include values corresponding to the address 0902 of the RAM 9 (value of the selected parameter F902 (parameter address)) and values (parameters) corresponding to the address of the RAM 9 indicated by the value. Is set). The same applies to the addresses 0004 to 0057 of the parameter group storage area 12a.

  FIG. 8 is a flowchart of the parameter group reading process. In the parameter setting mode, when any one of 1 to 4 is set in the read command parameter F900 of the RAM 9 and the ENT key 6d is pressed, the value of the read command parameter F900 stored in the RAM 9 is stored in the EEPROM 3 in step S21. Write. At this time, the title “F900” and the set value of the parameter are alternately displayed twice on the display unit 4 at a predetermined cycle. Thereafter, the process proceeds to step S22, and the addresses and values of the parameters constituting the parameter group (any one of A to D) selected by the value (any one of 1-4) of the read command parameter F900 are stored in the flash memory 10. Data is read from the data memory area 12 (any one of the parameter group storage areas 12a to 12d) and written into the RAM 9 and the EEPROM 3.

  For example, when the read command parameter F900 is 1, 29 address data read from the addresses 0000, 0002, 0004,..., 0056 of the parameter group storage area 12a are sequentially written to the addresses 9901 to 0929 of the RAM 9 and the EEPROM 3 to store the parameter group. The 29 values read from the addresses 0001, 0003, 0005,..., 0057 of the area 12a are written into the 29 addresses of the RAM 9 and the EEPROM 3. After writing, it is reset in step S23.

  Thus, when the parameter group number (corresponding to the identification information) is set in the read command parameter F900, the CPU 8 operates as parameter group selection means for selecting the parameter group having the number. Also, it operates as a parameter group reading means for executing a parameter group reading process from the flash memory 10 in response to the parameter group number being set in the read command parameter F900.

  Next, the addresses and values of parameters constituting the parameter group among the parameters stored in the RAM 9 are stored in the data memory area 12 of the flash memory reserved for the selected parameter group A to D (parameter group storage). A parameter group writing process for writing to any one of the regions 12a to 12d will be described. The parameter F999 at the address 0999 is a write command parameter for instructing which parameter group storage area 12a to 12d to write the parameter group stored in the RAM 9 (that is, which of the parameter groups A to D). .

  FIG. 9 is a flowchart of the parameter group writing process. In the parameter setting mode, when any value from 1 to 4 is set in the write command parameter F999 of the RAM 9 and the ENT key 6d is pressed, the value of the write command parameter F999 stored in the RAM 9 is set in step S31. Write to EEPROM3. At this time, the title “F999” and the set value of the parameter are displayed twice on the display unit 4 alternately at a predetermined cycle. Thereafter, the process proceeds to step S32, and the value (address) of the selection parameter F901 to F929 in the RAM 9 and the value stored in each address are selected by the value (any one of 1 to 4) of the write command parameter F999. Is written in one of the parameter group storage areas 12a to 12d.

  For example, when the write command parameter F999 is 1, the values from the addresses 0901 to 0929 in the RAM 9 are written in the addresses 0000, 0002, 0004,. In addition, the values (1, 11, 21,..., 1 in the example shown in FIG. 5) stored in the addresses indicated by the addresses 0901 to 0929 in the RAM 9 are respectively set to the addresses 0001 in the parameter group storage area 12a. , 0003, 0005, ..., 0057.

  Thereafter, the process proceeds to step S33, and the value of the write command parameter F999 (the number of the selected parameter group) is written into the read command parameter F900 of the RAM 9. After writing, it is reset in step S34. By changing the read command parameter F900, only the parameters constituting the parameter group are displayed when the mode is shifted to the parameter setting mode after reset is released.

  Thus, when the parameter group number (corresponding to the identification information) is set in the write command parameter F999, the CPU 8 operates as parameter group selection means for selecting the parameter group having the number. Also, it operates as parameter group writing means for executing a parameter group writing process to the flash memory 10 in response to the parameter group number being set in the write command parameter F999.

  When parameter groups are set in the parameter setting mode of the inverter device 1, all the parameters can be displayed by setting the read command parameter F900 to 0, and necessary parameter addresses are set in the selection parameters F901 to F929. After setting, when the parameter group number (any one of 1 to 4) is written to the write command parameter F999, the microcomputer 2 is once reset.

  After resetting, set the parameter setting mode again. Since the number (1 to 4) of the parameter group is set in the read command parameter F900, only the parameters constituting the parameter group are displayed. Therefore, desired values are set in these parameters, and the parameter group number (any one of 1 to 4) is written in the write command parameter F999 again. As a result, the address of the parameter constituting the parameter group and its value are written in the selected parameter group storage area of the flash memory 10. This parameter group setting method is easier and more efficient than a method of searching for a desired parameter from among a large number of parameters while setting all parameters to be displayed and setting a value.

  Further, the inverter device 1 has an interface function of receiving parameter group data sent from the outside by a serial communication circuit and writing it into the data memory area 12 of the flash memory 10. After the writing, by writing a desired parameter group number in the read command parameter F900, a plurality of parameter groups can be selected and used by a simple method. Further, the manufacturer of the inverter device 1 may provide the parameter group data given by the manufacturer of the device in which the inverter device 1 is incorporated after being written in the data memory area 12 of the flash memory 10 in advance.

  As described above, the inverter device 1 of the present embodiment is configured to store a plurality of parameter groups A to D in the data memory area 12 of the flash memory 10 built in the microcomputer 2. Then, a parameter group reading process for reading the selected parameter group from the flash memory 10 and writing it to the RAM 9 and a parameter group writing process for writing the parameter group of the RAM 9 to the selected parameter group storage area of the flash memory 10 can be executed. It is configured.

  As a result, a large number of parameter groups can be stored in the flash memory 10 that is built in the microcomputer 2 and easily secures a large memory capacity at a low cost, and the parameter groups including necessary parameters are selectively read out to the RAM 9. Thus, one inverter device 1 can be used by being incorporated in various types of devices. In addition, since the value is stored in the data memory area 12 of the flash memory 10 together with the addresses of the parameters constituting the parameter group, it is not necessary to set an initial value.

  In the RAM 9, the parameter group is configured by parameters having addresses designated by the set values of selection parameters F901 to F929 provided for indirect designation. Since the selection parameters F901 to F929 are arranged at consecutive addresses 0901 to 0929, it is easy to set values (addresses) continuously.

  When the value of the read command parameter F900 is 0 (when the parameter group to be read is not selected), all parameters can be displayed and can be changed while sequentially displaying the values of all parameters. When the value of the read command parameter F900 is 1 to 4 (when a parameter group to be read is selected), only the parameter having the address specified by the selection parameters F901 to F929 can be displayed. Only the values of the selected parameters can be changed sequentially. If this function is used, only the parameters constituting the parameter group can be displayed, and the parameters can be easily set.

  The parameter setting values read from the data memory area 12 of the flash memory 10 are written to the EEPROM 3 in association with the addresses, and all parameters are read from the EEPROM 3 and written to the RAM 9 in the initialization process when the power is turned on. . Thereby, it is not necessary to read out the parameter group every time the power is turned on.

  If at least the read command parameter F900 is included in the parameters constituting the parameter group, the value of the read command parameter F900 can be changed to read another parameter group. When the value of the read command parameter F900 is set to 1 to 4, all the parameters can be displayed and changed by changing the value of the read command parameter F900 to 0. On the contrary, if the read command parameter F900 is not included in the parameters constituting the parameter group, the user cannot change to another parameter group, and the inverter device 1 displays only the parameter group. However, even in this case, it is possible to change to another parameter group by means of communication or the like.

  A title (name data) is attached to the parameter, and this title is displayed on the display unit 4, so that the user can easily identify the parameter. In the present embodiment, the title is generated by combining the letter “F” and a three-digit number, but the present invention is not limited to this.

The present invention is not limited to the embodiment described above and shown in the drawings. For example, the present invention can be modified or expanded as follows.
The number of parameter groups stored in the data memory area 12 of the flash memory 10 may be plural. The number of parameters constituting each parameter group may be one or more.

  The parameter groups A to D of the above embodiment all have 29 parameters, but dummy parameters may be included in the parameters constituting the parameter group. This dummy parameter is a non-existing address value of 1000, for example. When the value of the read command parameter F900 is set to 1 to 4, the CPU 8 displays only the parameter having the address designated by the selection parameters F901 to F929, but does not display the address that does not exist at this time. According to this configuration, the number of parameters constituting the parameter group can be substantially reduced, and the number of parameters to be displayed can be reduced accordingly.

The schematic block diagram of the control part of the inverter apparatus which shows one Embodiment of this invention Front view of inverter device Parameter setting change flowchart Figure showing the transition of display with key operation The figure which shows an example of the data memorize | stored in RAM and EEPROM 4 equivalent diagram The figure which shows an example of the data memorize | stored in the parameter group storage area of flash memory Flow chart of parameter group reading process Parameter group writing process flowchart

Explanation of symbols

  In the drawings, 1 is an inverter device, 2 is a microcomputer, 3 is an EEPROM (rewritable nonvolatile memory), 4 is a display unit (display means), 9 is a RAM, 10 is a flash memory, and 12 is a data memory area (data Storage area).

Claims (9)

A rewritable non-volatile memory for storing a set value of each parameter in association with identification information for a plurality of parameters, and a plurality of parameter groups including one or a plurality of parameters selected from the plurality of parameters A flash memory in which a data storage area is set, and a microcomputer having a RAM that stores the plurality of parameters read from the nonvolatile memory and is referred to when an inverter operation is performed,
Parameter processing means for causing the microcomputer to execute a processing operation relating to the parameter,
Parameter group selection means for selecting a parameter group to be read or / and written from a plurality of parameter groups;
Among the parameters stored in the RAM, the identification information and setting values of the parameters constituting the parameter group are written in the data storage area of the flash memory reserved for the parameter group selected by the parameter group selection means Parameter group writing means;
A parameter group reading unit that reads identification information and setting values of parameters constituting the parameter group selected by the parameter group selection unit from the data storage area of the flash memory and writes the information to the RAM; Inverter device.   2. The inverter device according to claim 1, wherein the parameter group reading means writes the set value of the parameter read from the data storage area of the flash memory in the nonvolatile memory in association with the identification information.   3. The RAM according to claim 1, wherein the parameter group includes a parameter having identification information instructed by a setting value of a specific indirect designation parameter provided for indirect designation. Inverter device. The parameter group selection means selects the parameter group having the identification information by setting the identification information of the parameter group in the write command parameter provided for performing the write command,
4. The parameter group writing means executes parameter group writing processing to the flash memory in response to setting of parameter group identification information in the write command parameter. The inverter apparatus in any one of. The parameter group selection means selects the parameter group having the identification information by setting the identification information of the parameter group in the read command parameter provided for performing the read command,
5. The parameter group reading means executes a parameter group reading process from the flash memory in response to setting of parameter group identification information in the read command parameter. An inverter device according to any one of the above. A display means,
The parameter processing means includes display control means for displaying only the parameters constituting the parameter group among the parameters stored in the RAM when displaying the identification information and set values of the parameters on the display means. The inverter device according to claim 1, wherein the inverter device is provided.   The display control means can display all the parameters stored in the RAM on the display means when a parameter group to be read is not selected by the parameter group selection means. 6. The inverter device according to 6.   6. The inverter device according to claim 5, wherein the parameters constituting the parameter group include at least the read command parameter.   9. The inverter device according to claim 1, wherein the identification information of the parameter includes an address or an address and name data.

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