JP2000018506A - Boiler controller - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily confirm a preset value while contribing to reduce cost by eliminating mechanical switches. SOLUTION: This boiler controller is provided with a microcomputer 20 instructing a control procedure to a boiler, an operation button 24 inputting information into the microcomputer 20, a program memory 22 in which a control program through which the microcomputer 20 outputs instructions to the boiler body 1 is stored, and a data memory 26 storing a plurality of setting values for presetting one of selectable procedures of programs stored in the program memory 22, when there are selectable programs. The data memory 26 is provided with a memory area 28 for standard set values, storing a set value in the initial condition and a memory area 27 for storing a present set value.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a computer for instructing a control procedure to a boiler, an operation unit for inputting information to the computer, and a program storing a control program for the computer to instruct the boiler. A boiler control device, comprising: a memory; and a data memory for storing a plurality of set values for setting which of the program procedures stored in the program memory is to be selected when there is an option. About.

[0002]

2. Description of the Related Art FIG. 3 shows a prior art of such a boiler control device. The control device 2 controls the boiler main body 1, and includes a microcomputer (computer) 20 for instructing the boiler main body 1 to perform a control procedure,
A display device 21 such as T, a program memory 22 storing a control program, and switches 23a, 23b,.
.. 23n. Switch 23a ...
Is a mechanical switch for setting which is to be selected when there is an option in the program procedure, and is called a dip switch. The options include a target temperature set value and a pressure set value. Such a set value is stored in each switch 23a.
Is operated and a predetermined program is executed based on the selected set value.

[0003] The problem of this prior art is that switches are required as many as the number of set values to be set, which leads to an increase in manufacturing cost and an increase in the size of the apparatus. FIG. 4 shows a conventional technique that solves such a problem.

In this improved prior art, a plurality of set values for setting which is to be selected when there is an option in a program procedure stored in a program memory are stored instead of a switch. Data memory 25
Is provided. In the data memory 25, the set values 25a, 2
.. 25n are written as data, and these set values 25a, 25b.
Correspond to the switches 23a, 23b... 23n. To rewrite the set value, the microcomputer 20
By operating the operation button 24 functioning as an operation unit connected to the, each set value is sequentially called and set to either ON or OFF. According to this configuration, the data memory 2
The provision of 5 is advantageous in that the mechanical switch can be eliminated, thereby preventing the production cost and the size of the device from being increased.

[0005]

However, if each set value is rewritten from the initial state, the operator has to refer to the manual with one hand to confirm it, which is very troublesome. Cost. In particular, since the confirmation is performed while sequentially calling each set value while operating the operation button 24, if the number of setting items increases, there is a problem that a large amount of time is required for confirmation, and there is room for improvement.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to provide a boiler control device capable of easily confirming set values while reducing costs by eliminating mechanical switches. To provide.

[0007]

In order to achieve the above object, a boiler control device according to the present invention comprises: a computer for instructing a control procedure to a boiler; an operation unit for inputting information to the computer; A program memory storing a control program for instructing the boiler, and a plurality of settings for setting which is to be selected when there is an option in a program procedure stored in the program memory A boiler control device comprising a data memory for storing a value,
The data memory includes a standard set value storage area for storing set values in an initial state, and a current set value storage area for storing current set values.

According to this configuration, the data memory has at least a standard set value storage area and a current set value storage area. In the standard setting value storage area, initial setting values are written, and data is in a fixed state. The current set value is written in the current set value storage area. Therefore, since both the current set value and the set value in the initial state are written as data, the changed set value can be easily confirmed by comparing these.

As a preferred embodiment of the present invention, the apparatus further comprises a display unit connected to the computer, and a set value comparing means for comparing the set value in the initial state with the current set value. An example of displaying the total number on the display unit is given.

According to this, the set values in the initial state and the corresponding ones of the current set values are sequentially compared, and the different ones, that is, the total number of the set values and the states that have changed from the initial state are displayed. To be displayed. Various actions can be taken by the operator recognizing the displayed total number. For example, if all the setting values have been changed from the initial state, the check is performed in order from the beginning.

As another preferred embodiment of the present invention, an item number of a set value having a different value between the set value in the initial state and the current set value is displayed on the display unit. As a result, it is possible to immediately know which item has been changed without checking the manual.

Other features and advantages of the present invention will become apparent from the following description of embodiments with reference to the drawings.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS <Structure of the Present Embodiment> FIG. 1 is a block diagram showing an embodiment of the present invention, and portions having the same functions as those of the prior art described above are given the same reference numerals.

The major feature of this configuration is that the data memory 26
And has two areas, a current setting value storage area 27 and a standard setting value storage area 28. In the current setting value storage area 27, the current setting values 27a, 27b
.. 27n are written in the standard setting value storage area 28, and initial setting values 28a, 28b. The data written in the standard setting value storage area 28 is in a fixed state and cannot be rewritten. On the other hand, initial setting values 28a, 28b,.
n is written in the current setting value storage area 27 as the current setting values 27a, 27b... 27n. Here, the initial setting value 28a and the current setting value 27a correspond to each other, and the initial setting value 28n corresponds to the current setting value 27n in the following order.

<Description of Set Value Confirmation Procedure> Next, a procedure for confirming the set value will be described with reference to the flowchart of FIG. First, it is checked whether or not the operation button 24 has been pressed (# 10). If the operation button 24 has been pressed, the corresponding current setting values 27a, 27b,.
.. 27n and the initial set values 28a, 28b... 28n are sequentially compared (# 20). And the current set value 2
.. 27n and initial setting values 28a, 28
... 28n are displayed on the display unit 21 composed of a monitor (# 30). Next, it is checked again whether or not the operation button 24 has been pressed down (# 40). If there is a press down, the item number of the setting value having a different value between the current setting value 27a and the initial setting value 28a is displayed on the display unit 24. It is displayed (# 50). This allows
The operator can specifically know what item has been changed. Next, it is checked whether or not all setting values have been checked (# 60). If there are still unchecked setting values, they are also compared and checked in order. If all are checked, the routine ends.

In the case of replacing the control device, it is only necessary to change the item of the set value which has been checked and changed from the initial state for the new control device. The advantage also arises.

[Brief description of the drawings]

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

FIG. 2 is a flowchart showing the operation of the embodiment.

FIG. 3 is a block diagram showing a control device according to the related art.

FIG. 4 is a block diagram showing an improved control device according to the prior art.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Boiler main body 2 Control device 20 Microcomputer 21 Display unit 22 Program memory 23a, 23b, 23n Switch 24 Operation button (operation unit) 25 Data memory 25a, 25b, 25n Set value 26 Data memory 27 Current set value storage area 27a, 27b, 27n Current set value 28 Standard set value storage area 28a, 28b, 28n Initial set value

Claims (3)

[Claims] A computer for instructing a control procedure to a boiler; an operation unit for inputting information to the computer;
A program memory for storing a control program for the computer to instruct the boiler; and a program memory for setting which is to be selected when there is an option in a program procedure stored in the program memory. A boiler control device comprising: a data memory that stores a plurality of set values; the data memory includes a standard set value storage area that stores an initial set value, and a current set value storage that stores a current set value. A control device for a boiler, comprising: an area; A display unit connected to the computer; and a set value comparison unit for comparing the set value in the initial state with the current set value, wherein a total number of different set values is displayed on the display unit. The control device for a boiler according to claim 1, wherein A display unit connected to the computer; and a set value comparison unit configured to compare the set value in the initial state with the current set value, wherein the set value in the initial state and the current setting are further included. The boiler control device according to claim 1, wherein an item number of a set value having a value different from the value is displayed on the display unit.