JPH0614460A - Setting value storing method - Google Patents

Abstract

PURPOSE:To continue a setting value indicating function at a setting operation and display unit even though an abnormal state occurs at an interface. CONSTITUTION:A display memory 5 is arranged at a setting operation and display unit 1, and setting data to be sent to a arithmetic portion 2 are branched and stored in the display memory 5. The setting operation and display unit 1 takes out setting data from the display memory 5 and displays the data. Thus, even though an abnormal state occurs at an interface 3, the function to display the setting values on the setting operation and display unit 1 is not lost.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a settling value storage method suitable for use in a voltage-reactive power control device for controlling the voltage and reactive power of each part of a power system.

[0002]

2. Description of the Related Art Conventionally, in a voltage-reactive power control device, a settling value is sent from a settling operation / display section to an arithmetic section through an interface, and the sent settling value is placed in an arithmetic section. In addition to being stored in the memory for use, the operation is performed based on the stored set value. That is, as shown in FIG. 3, from the settling operation panel or display (settling operation / display section) 1,
Enter the set value manually. Then, the settling operation / display unit 1 transfers the settling data (shown in the figure) to the calculation CPU (calculation unit) 2 via the communication system (interface) 3. The calculation unit 2 stores the sent settling data in the calculation memory 4. The settling value stored in the calculation memory 4 can be displayed in response to a request from the settling operation / display unit 1. That is, when there is a display request from the settling operation / display unit 1, the calculation unit 2 extracts the settling data from the calculation memory 4 and transfers it to the settling operation / display unit 1 via the interface 3. The settling operation / display unit 1 displays the transferred settling data as display data (shown in the figure).

[0003]

However, according to such a conventional voltage-reactive power control device, when an abnormality occurs in the interface 3 connecting the settling operation / display unit 1 and the arithmetic unit 2, the arithmetic memory 4 is used. It becomes impossible to display the settling value stored in the settling value on the display / display unit 1, and it becomes impossible to know what settling value is used.
Further, when the settling operation / display unit 1 displays, it takes time to transfer the settling value from the calculation unit 2 to the settling operation / display unit 1. When the number of settling items increases, the transfer data amount increases, so the display There was a problem that it took a long time.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve such a problem, in which a display memory is arranged in a settling operation / display unit and a settling value sent to a calculation unit is sent to the display memory. Is also stored.

[0005]

Therefore, according to the present invention, the settling value is stored in both the calculation memory arranged in the calculation unit and the display memory arranged in the settling operation / display unit.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The settling value storage method according to the present invention will be described in detail below.

FIG. 1 is a diagram showing a main configuration of a voltage-reactive power control device to which this settling value storage method is applied. In the figure, the same reference numerals as those in FIG. 3 denote the same or equivalent components, and the description thereof will be omitted.

In this voltage-reactive power controller,
The display memory 5 is placed in the settling operation / display unit 1,
The settling data to be sent to the calculation unit 2 is branched and stored in the display memory 5.

FIG. 2 is a flow chart showing a storage process and a display process of the set value. Based on this flowchart, the process of storing the set value and the process of displaying the set value will be described.

First, the process of storing the set value will be described. If settling is desired, the start of settling is selected according to the will of the human (step 201). Next, a settling start switch (not shown) is turned on (step 202), and a settling value is input from the settling operation / display unit 1 (step 20).
3). Then, the write switch (not shown) is turned on (step 204), and the set value is stored in the display memory 5 (step 205). Next, the range is checked to see if there is an abnormality in the input (step 206), and if there is no error, the operation start switch (not shown) is turned on (step 207). As a result, the settling data is transferred from the settling operation / display section 1 to the computing section 2 via the interface 3 (step 208). The calculation unit 2 receives the sent settling data (step 209) and stores it in the calculation memory 4 (step 210).

Next, the process of displaying the set value will be described. When it is desired to know the set value currently being operated, the display start is selected (step 201) and the display switch (not shown) is turned on (step 21) according to the intention of a human being.
1). As a result, the settling operation / display unit 1 takes out the settling data from the display memory 5 as display data (step 212), and displays the taken out display data (step 213). That is, the settling operation / display unit 1
Display memory 5 without using interface 3.
Immediately retrieve the settling data from and display it.

[0012]

As is apparent from the above description, according to the present invention, the settling value is stored in both the computing memory arranged in the computing section and the display memory arranged in the settling operation / display section. Therefore, if the settling value is fetched from the display memory and displayed, even if an abnormality occurs in the interface, the settling value display function of the settling operation / display unit can be continued. Also, it becomes possible to shorten the time required for displaying by omitting the operation of setting operation / transfer of the set value to the display unit via the interface. Even if the number of setting items is large, the display can be performed in a short time. Will be able to.

[Brief description of drawings]

FIG. 1 is a diagram showing a main configuration of a voltage-reactive power control device to which a settling value storage method according to the present invention is applied.

FIG. 2 is a flowchart showing a storage process and a display process of a settling value in this voltage-reactive power control device.

FIG. 3 is a diagram showing a main configuration of a voltage-reactive power control device to which a conventional settling value storage method is applied.

[Explanation of symbols]

 1 Setting operation / display section 2 Computing section 3 Interface 4 Computing memory 5 Display memory

Claims (1)

[Claims] 1. A settling value storing method for sending a settling value from a settling operation / display section to an arithmetic section via an interface and storing the sent settling value in an arithmetic memory arranged in the arithmetic section. A settling value storing method, wherein a display memory is arranged in the settling operation / display section, and a settling value to be sent to the calculation section is also stored in the display memory.