JP3838783B2 - Boiler control device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention includes a computer that instructs a boiler on a control procedure, an operation unit that inputs information to the computer, a program memory that stores a control program that the computer instructs the boiler, and a program memory The present invention relates to a boiler control device including a data memory for storing a plurality of setting values for setting which one to select when there are choices in a stored program procedure.
[0002]
[Prior art]
FIG. 3 shows a related art of such a boiler control apparatus. The control device 2 controls the boiler body 1, and includes a microcomputer (computer) 20 for instructing the boiler body 1 to control procedures, a display device 21 such as a CRT, a program memory 22 storing a control program, a switch 23a, 23b,... 23n. The switches 23a,... Are mechanical switches for setting which one to select when there are options in the program procedure, and are called dip switches. Options include target temperature setpoints and pressure setpoints. Such setting values are selected by operating the switches 23a,..., And a predetermined program is executed based on the selected setting values.
[0003]
The problem with this prior art is that switches are required for the number of set values to be set, which increases the manufacturing cost and increases the size of the apparatus. FIG. 4 shows a conventional technique for solving such a problem.
[0004]
In this improved prior art, instead of a switch, a data memory 25 for storing a plurality of setting values for setting which one to select when there is an option in the program procedure stored in the program memory. Is provided. Setting values 25a, 25b,... 25n are written as data in the data memory 25, and these setting values 25a, 25b,... 25n are switches 23a, 23b,. Corresponds to 23n. In order to rewrite the set value, the operation button 24 functioning as an operation unit connected to the microcomputer 20 is operated, and each set value is sequentially called and set to either ON or OFF. According to this configuration, by providing the data memory 25, the mechanical switch can be eliminated, which is advantageous in terms of preventing manufacturing cost and increase in size of the apparatus.
[0005]
[Problems to be solved by the invention]
However, if each set value is rewritten from the initial state, it is necessary for the operator to check it while referring to the manual with one hand. In particular, since the confirmation is performed by calling each setting value in order while operating the operation button 24, there is a problem that it takes a lot of time for confirmation when the number of setting items increases, and there is room for improvement.
[0006]
The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a boiler control device capable of easily confirming a set value while reducing costs by eliminating a mechanical switch. It is.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, a control apparatus for a boiler according to the present invention includes a computer that instructs a boiler on a control procedure, an operation unit that inputs information to the computer, and a control program that the computer instructs the boiler. And a data memory for storing a plurality of setting values for setting which one to select when there is an option in the program procedure stored in the program memory. In the boiler control device, the data memory includes a standard set value storage area for storing a set value in an initial state and a current set value storage area for storing a current set value .
[0008]
According to this configuration, the data memory includes at least a standard set value storage area and a current set value storage area. In the standard set value storage area, set values in the initial state are written, and the data is in a fixed state. The current set value is written in the current set value storage area. Accordingly, since both the current set value and the initial set value are written as data, the changed set value can be easily confirmed by comparing them.
[0009]
Then, the control unit of the boiler according to the present invention comprises a connected display unit to the computer, the setting value comparison means for comparing the set value and the current value of the initial state, the said operating unit In step 1 , the total number of different set values is displayed on the display unit .
[0010]
According to this, by the operator's operation, the corresponding set value in the initial state and the corresponding set value in the current state are sequentially compared, and the total number of items that are different, that is, the set value value or state has changed from the initial state. Display on the display. Various actions can be taken by the operator recognizing the total number displayed. For example, if all set values have been changed from the initial state, the checks are performed in order from the beginning.
[0011]
Furthermore, the boiler control device according to the present invention has a set value that is different between the initial set value and the current set value in the second operation of the operation unit following the first operation . The item number is displayed on the display unit . That is, after the total number of different setting values is displayed in the first operation by the operator, the item number of the setting value corresponding to the total number of different setting values is displayed on the display unit by the second operation by the operator. Thus, the operator can specifically know what item has been changed, and can immediately know which item has been changed without examining the manual.
[0012]
Other features and advantages of the present invention will become apparent from the following description of embodiments using the drawings.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
<Configuration of this embodiment>
FIG. 1 is a block diagram showing an embodiment of the present invention, and parts having the same functions as those of the prior art already described are given the same reference numerals.
[0014]
A major feature of this configuration is the configuration of the data memory 26, which includes two areas, a current set value storage area 27 and a standard set value storage area 28. .. 27n are written in the current set value storage area 27, and initial set values 28a, 28b,... 28n are written in the standard set value storage area 28. . The data written in the standard set value storage area 28 is in a fixed state and cannot be rewritten. On the other hand, the initial setting values 28a, 28b,... 28n rewritten by operating the operation button 24 are written in the current setting value storage area 27 as the current setting values 27a, 27b,. Here, the initial setting value 28a corresponds to the current setting value 27a, and the initial setting value 28n corresponds to the current setting value 27n in the following order.
[0015]
<Description of set value confirmation procedure>
Next, a procedure for confirming the set value will be described using the flowchart of FIG. First, it is checked whether or not the operation button 24 is depressed (# 10). If the operation button 24 is depressed, the corresponding current setting values 27a, 27b,... 27n and initial setting values 28a and 28b are detected. ... Comparison with 28n is performed in order (# 20). .., 27n and the initial setting values 28a, 28b,... 28n are displayed on the display unit 21 including the monitor (# 30). . Next, it is checked whether or not the operation button 24 is depressed again (# 40). If there is a depression, the item number of the setting value that is different between the current setting value 27a and the initial setting value 28a is displayed on the display unit 24. Display (# 50). Thereby, the operator can know specifically what items are changed. Next, it is checked whether all set 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.
[0016]
When replacing the control device, it is only necessary to change the new control device for the setting value item that has been checked and changed from the initial state, so that it is easy to replace the control device. Also occurs.
[Brief description of the drawings]
FIG. 1 is a block diagram showing an embodiment of the present invention. FIG. 2 is a flowchart showing an operation of the embodiment. FIG. 3 is a block diagram showing a control device according to the prior art. Block diagram showing control device 【Explanation of symbols】
DESCRIPTION OF SYMBOLS 1 Boiler main body 2 Control apparatus 20 Microcomputer 21 Display part 22 Program memory 23a, 23b, 23n Switch 24 Operation button (operation part)
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 (1)

A computer for instructing a control procedure to the boiler, an operation unit for inputting information to the computer, a program memory in which a control program instructed by the computer to the boiler is stored, and stored in the program memory In a boiler control device having a data memory for storing a plurality of setting values for setting which one to select when there are options in the program procedure,
The data memory stores, as a current set value, a standard set value storage area for storing a set value in an initial state, and a set value in an initial state rewritten by an operation unit for performing a rewrite operation of the set value in the initial state. Current setting value storage area,
A display unit connected to the computer;
A set value comparing means for comparing the set value in the initial state with the current set value;
With
No. of the operation unit 1 To display the total number of different setting values on the display unit,
Said 1 In the second operation of the operation unit subsequent to the operation, an item number of a set value that is different between the set value in the initial state and the current set value is displayed on the display unit. Control device.

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