JPH0535310A - Constant setting device - Google Patents

Abstract

PURPOSE:To easily execute tests and control by easily storing and restoring a set value at a certain point of time. CONSTITUTION:This device is equipped with a final request storage part 7 to store all the constant set values at that time according to the set value storage request of a constant setting control panel 1, change history storage part 8 to record difference from preceding stored data each time of storage, and restorage parts 2 and 3 to return current setting to the set value stored at a certain point of time according to the final request storage part 7 and the change history storage part 8.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a constant setting device for setting a system constant in, for example, a power source device for driving an electric motor.

[0002]

2. Description of the Related Art FIG. 4 is a block diagram showing a conventional constant setting device. In the figure, 1 is a constant setting operation panel as a man-machine interface, and 2 is an RO that stores programs for performing constant calculation and control calculation.
M and 3 are interconnected with the constant setting operation panel 1 and the ROM 2, and a CPU 4 for executing a program stored in the ROM 2 is interconnected with the CPU 3 and constant setting values set by the constant setting operation panel 1. An EEPROM for storing the data is connected to the CPU 3, a RAM area for storing the result of converting the constant setting value set by the constant setting operation panel 1 for control calculation, and 6 is a control target interconnected with the CPU 3. It is a device.

Next, the operation will be described. When the controlled device 6 is, for example, a power source device for driving an electric motor and it is desired to change the gain of the speed control unit (not shown), the constant setting operation panel 1 is first operated to set the gain constant to be changed. Next, the CPU 3 makes a change for the setting calculation with respect to the set value, and when the change is normally completed,
The setting value is stored in the constant setting value storage EEPROM 4, and the converted value is stored in the constant conversion result storage RAM area 5. Further, the CPU 3 uses the new data stored in the constant conversion result storage RAM area 5 to control the controlled device 6 according to the program in the ROM 2.

[0004]

Since the conventional constant setting device is configured as described above, many constant set values are changed and set values at a certain point are changed, for example, when a control test is performed. When you want to restore, it is necessary to memorize the change history for all the changed constants and return them one by one from the constant setting operation panel, so there is a lot of trouble and it is easy to cause human error. was there.

The present invention has been made in order to solve such a problem, and provides a constant value setting device which can easily restore a set value at a certain point of time and can be easily tested and adjusted. The purpose is to get.

[0006]

SUMMARY OF THE INVENTION A constant setting device according to the present invention comprises a final request storage unit for storing all constant set values at that time in a RAM area in response to a man-machine interface setting value storage request, and a memory buffer. Change history storage section that leaves a record of the difference from the previously stored data in the RAM area each time it is stored, and the current setting from the last request storage section and the change history storage section at the request of the man-machine interface. And a restoring unit that restores the set value stored at a certain point in time.

[0007]

According to the present invention, the constant setting value at a required time is stored in the RAM area in response to the storage request from the constant setting operation panel, and the RAM area storing the change history at the desired time and all the constant setting values stored at the end. By restoring the constant at a desired time from, a certain control state can be instantly and accurately reproduced.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing an embodiment of a constant setting device according to the present invention. In the figure, 1 to 6 are shown in FIG.
The same as the conventional example. 7 is interconnected with the CPU 3, RAM area for storing all constant setting values at the last storage request, and 8 is interconnected with the CPU 3,
This is a change history storage RAM area that stores the difference between the previous time and the current time each time it is stored.

Next, the operation will be described. FIG. 2 is a flow chart for explaining the operation when there is a storage request from the constant setting operation panel 1 in the embodiment of the present invention, and FIG. 3 similarly shows the operation when there is a restore request from the constant setting operation panel 1. It is a flowchart figure explaining.

First, when there is a storage request for the current set value from the constant setting operation panel 1, it is judged in step ST1 in FIG. 2 whether or not this request is the first time, and when it is the first time, a comparison is made. Since there is nothing, the number assigned to the information for the difference is initialized to 0 in step ST4 and is not stored in the change history storage RAM area 8. On the other hand, if it is not the first request, first, in step ST2, the number assigned to the different information is increased.
Next, in step ST3, the EEP for saving the current constant set value.
The set value stored in the ROM 4 is compared with the data in the RAM area 7 for storing all constant set values at the time of last storage in which the set values of all constants when the previous storage request was made are compared, and different data is compared. In contrast, information such as which constant is different and what its value is is numbered and stored in the change history storage RAM area 8. Furthermore, step ST5
Then, regardless of whether it is the first storage request or not, the setting value data currently stored in the EEPROM 4 for storing constant setting values is stored in the last storing all constant setting values R
The data is stored in the AM area 7, and the processing for a series of storage requests is completed.

Next, in FIG. 3, when there is a request from the constant setting operation panel 1 to restore the set value of the number specified for the number added to the information for the difference, step ST1
1, the change history saving RAM based on the data stored in the RAM area 11 for saving all constant set values at the time of final storage
The history information stored in the area 8 is sequentially traced to restore all constant set values for the designated number. For example, when the number assigned to the current difference information is 10 and the designated number requested to be restored from the constant setting operation panel 1 is 7, history information stored in the change history storage RAM area 8 By sequentially restoring the set values in the order of 10 → 9 → 8 → 7, it becomes possible to restore the data of all constant set values for the desired designated number. Next, step ST12
Then, the restored data is stored in the EEPROM 4 for storing constant set values.
Stored in, and conversion for the control calculation is performed on the set value restored in step ST13, and a series of restoration processing ends.

[0012]

As described above, according to the present invention, the last-request storage unit that stores all constant set values at that time in response to a man-machine interface set value storage request, and the previously stored data for each storage Connected to the change history storage unit, the final request time storage unit and the change history storage unit, and the final request time storage unit and the change history storage unit at the request of the man-machine interface. Since it has a restoring unit that restores the current setting to the setting value stored at a certain time point, the constant setting value at a required time point can be easily stored and restored, and the specific control state of the controlled device can be instantaneously set. It can be created, and all storage and restoration is done by a program, and since the change history storage RAM area is only different from the previously stored data, the RAM area can be small. An effect that can be realized.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention.

FIG. 2 is a flow chart for explaining the operation when there is a storage request in the embodiment of FIG.

FIG. 3 is a flow chart for explaining the operation when there is a restoration request in the embodiment of FIG.

FIG. 4 is a block diagram showing a conventional constant setting device.

[Explanation of symbols]

 1 constant setting operation panel 2 ROM 3 CPU 4 constant setting value storage EEPROM 5 constant conversion result storage RAM area 6 controlled device 7 final storage all constant setting value storage RAM area 8 change history storage RAM area

Claims (1)

What is claimed is: 1. A difference between a last-request storage unit that stores all constant setting values at that time in response to a man-machine interface setting value storage request, and the previously stored data for each storage. A change history storage unit that stores points, a final request time storage unit, and a change history storage unit are connected, and a current state is output from the final request time storage unit and the change history storage unit at the request of the man-machine interface. A constant setting device comprising: a restoring unit that restores a setting to a setting value stored at a certain time.