JPH10161713A - Method for generating program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To generate a high quality program even without the knowledge of ladder sequence by displaying a condition defining table for defining on a display screen and generating the program of a sequencer through the use of the condition table. SOLUTION: In the condition table 22 of the condition defining table 9 on a sequencer program generating screen, it is defined that a controlled system Y0011 is set to be an on-state in an input area when an input X0004 is on and the input X0005 is off, for example, in the input area of an element to be a condition for controlling the controlled system and is set to be an off-state in the input area 28 unless the condition is established. When an input/output signal name with five characters is inputted from a keyboard, an operation becomes the one for selecting a necessary item from the list of an element object so that an input is facilitated and also an input mistake is reduced. Moreover, the condition table is the general one so that the sequencer program is generated without the special knowledge of ladder sequence.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to a method of creating a program for a programmable sequencer for controlling electric equipment.

[0002]

2. Description of the Related Art FIG. 5 shows a sequencer program creation screen shown on pages P4 to P29 of the "Mitsubishi general-purpose sequencer operating manual". In FIG. 5, 6
Is a program edit screen by the program creating device of the sequencer. 1 in this program edit screen 6
Reference numerals 2 and 3 denote input signals to the sequencer, and reference numerals 4 and 5 denote output signals from the sequencer. X0001, X0004, X0
005 is the name of the input signal. Y0001, Y001
1 is the name of the output signal.

Next, the operation will be described. In FIG. 5, when the input signal 1 is ON, the output signal 4 is turned ON.
It also shows that the output signal 5 is turned on when the input signal 2 is on and the input signal 3 is off. As a specific example, the input signal 1 is regarded as a failure signal and the output signal 4
Is a lamp lighting switch, when the failure signal 1 input to the sequencer is turned on, the lamp lighting switch 4 is turned on and output from the sequencer to turn on an external lamp to indicate occurrence of a failure. Failure signal 1 is OFF
Then, the lamp lighting switch 4 is turned off to turn off the lamp. Such a method of expressing a sequence is called a ladder sequence, and is a commonly used expression method. In such a conventional program creation method, a symbol such as 1 to 5 in the screen is input to the screen to create a program.

[0004]

In the conventional program creation method, a program is created as described above. Therefore, if a program description method called a ladder sequence as shown in FIG. The program could not be created. In addition, since input and output symbols are input from a keyboard, work efficiency is poor.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and enables a graphical user interface, allows easy creation of a sequencer program by defining complicated conditions, and enables a ladder sequence to be created. It is an object of the present invention to provide a program creating method capable of creating a high-quality sequencer program without any knowledge.

[0006]

According to a first aspect of the present invention, there is provided a program creating method, comprising: displaying a condition definition table on a display screen for defining under what conditions a controlled object is controlled to which state; A sequencer program is created using the condition table 22.

In the program creating method according to the second aspect of the invention, the condition definition table 9 includes input areas 23 and 24 for setting elements serving as conditions for controlling a control target, and the input areas 23 and 24 are set in the input areas 23 and 24. Input areas 25 and 26 for specifying the state of the element, and input areas 27 and 28 for specifying the state of the control target when the condition is satisfied / not satisfied
And characterized in that:

In the program creating method according to the third invention, each element in each of the condition tables 44 and 54 is ORed.
The condition tables 44 and 54 are connected by an AND condition.

According to a fourth aspect of the present invention, there is provided a program creating method comprising:
It is characterized in that the state of each element of the condition table is also defined as a transient state at the time of switching.

[0010] A program creation method according to a fifth invention is characterized in that:
A plurality of elements are arranged vertically and horizontally in the condition table 75, and an AND condition of the state of each element is defined in the horizontal direction.
It is characterized in that each line in the horizontal direction connected by a condition is defined by an OR condition.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiment 1 FIG. Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a diagram showing a sequencer program creation screen according to the program creation method according to the first embodiment. In the condition definition table 9 on the sequencer program creation screen of FIG. 1, reference numeral 21 denotes an input area to be controlled, 22
Is a condition table. The condition table 22 defines the condition under which the control target is controlled. The condition table 22 includes input areas 23 and 24 for elements serving as conditions for controlling the control target, and input areas 23 and 2.
Input areas 25 and 26 for designating the state of element 4
And an input area 27 for designating the state of the control target when the condition is satisfied, and an input area 28 for designating the state of the control target when the condition is not satisfied.
In the screen of FIG. 1, input X0004 is ON and input X0005
Is set to an ON state when the output Y0011 is OFF. When this condition is not satisfied, the output Y0
011 is set to OFF. Reference numeral 10 denotes a condition table No. displayed on the screen when there are a plurality of condition tables for the same control target. And an input area showing the total number of condition tables. No. 11 is the No. of the displayed condition table. Is a button for selecting the next page or the previous page of the currently displayed condition table. 1
Reference numeral 3 denotes a condition table call button, and reference numeral 12 denotes a condition table registration button. At the time of new creation, when the call button 13 is pressed, for example, the condition table 22 becomes blank, and preparation for registration of a control condition of a new control object can be performed. Next, the control target 21 is selected, and thereafter, the condition registration is sequentially performed. When one condition table 22 has been registered, when the registration button 12 is pressed, the condition table 22 is registered. If the condition table of the same control object is to be registered continuously, the call button 13 is pressed to continue the registration. The newly registered condition table for the same control target is as follows:
Thereafter, when the control target is newly called, the condition table No. of the same control target in the input area 10 is displayed. (Serial N
o. / Total number) column. Will be displayed as

The condition table is set by the program creator while looking at a list of input / output signals and a program specification describing the sequence control specifications. After the setting, the sequence program is automatically generated by software developed in advance based on the information in the condition table. In this condition table, all states of the defined elements are connected by an AND condition, and when the condition of the condition table is true, it is defined as when the condition is satisfied, and when it is false, it is defined as when the condition is not satisfied. The definition of the OR condition is defined by a method of creating a plurality of definition tables of the same control target. That is, in the condition table, all of the states of the defined elements are connected by an AND condition, and between the condition tables is connected by an OR condition. By defining in this manner, the operating conditions of AND and OR of the same control target can be defined. For complex conditions, an intermediate condition is defined by designating an internal memory as a control target. By further using this defined intermediate condition, that is, the internal memory as an element of the condition table, a more complicated definition becomes possible.

Next, FIG. 2 shows an example of a change of the screen of FIG. In FIG. 2, reference numeral 31 denotes a state in which a list of control objects registered in advance is displayed when the right list button 21a is pressed to specify the control object 21. The control target 21 is selected and input from the list, for example, with a mouse. Reference numeral 32 denotes a state in which, when the right list button 23a is selected with a mouse in order to specify the element 23, a list of elements which are control conditions registered in advance is displayed. Select and enter the target element from this list with the mouse. Reference numeral 33 denotes a state in which when the right list button 25a is selected with the mouse to specify the state of the element 23, a state list of each element comes out. Reference numeral 34 denotes a state in which when the right list button 34a is selected with the mouse, a list for specifying the state of the control target is displayed when the condition is satisfied, and the state of the control target is selected from the list with the mouse and input. .

As described above, according to the first embodiment,
It becomes a method of creating a sequencer program using a condition table, and input / output signal names (example X0001)
Instead of inputting characters, necessary items are selected from a list of element objects, so that input is facilitated and input errors are reduced. In addition, since the condition table is a general condition table, a sequencer program can be created without specialized knowledge of the ladder sequence.

Embodiment 2 Although the first embodiment of FIG. 1 shows a method of selecting a definition target from a list, in the second embodiment, a method of directly inputting an input signal name (eg, X0004) from a keyboard instead of selecting an input signal is also used. Good. By doing so, the target may be input faster than selecting from the list. For example, when there are many selection targets in the list, in the first embodiment, the list display is scrolled to see the targets, and it takes time, but in such a case, the keyboard is directly used as in the second embodiment. If you input an object from, you can select and input quickly.

Embodiment 3 FIG. 3 is a diagram showing a sequencer program creation screen according to the program creation method according to the third embodiment. In FIG. 3, reference numerals 41 and 51 denote condition definition tables on a sequencer program creation screen. In the condition definition table 41, reference numeral 42 denotes an input area to be controlled;
Is the No. of the condition table displayed on the screen when there are a plurality of condition tables for the same control target. And an area indicating the total number of condition tables, and 44 is a condition table for defining under what condition the control target is controlled to which state. The condition table 44 includes input areas 45 and 46 for setting elements serving as conditions for controlling a control target, and an input area 4 for designating the states of the elements set in the input areas 45 and 46.
7, 48, an input area 49 for designating the state of the control target when the condition is satisfied, and an input area 50 for designating the state of the control target when the condition is not satisfied.
In the condition definition table 51 on the sequencer program creation screen, reference numeral 52 denotes an input area of a control target, and reference numeral 53 denotes a condition table No. displayed on the screen when there are a plurality of condition tables for the same control target. And an area indicating the total number of condition tables, and 54 is a condition table. The condition table 54 has input areas 55 and 56, input areas 57 and 58, an input area 59, and an input area 60 similar to the condition table 44. Also,
In FIG. 3, reference numeral 63 denotes a condition for turning on the control target Y0011, which corresponds to the condition tables 44 and 54. In Embodiment 1 of FIG. 1 described above, each element of the condition table is connected by an AND condition. In Embodiment 3, however, each element of the condition table is O
The condition table is connected by the R condition so that A
The connection is made under the ND condition. By doing so, in the case where the definition of the condition is mainly the OR condition, the condition can be often defined in the sheets of the same condition table, the number of sheets in the condition table can be reduced, and labor can be saved.

Embodiment 4 In FIG. 1, the states of the respective elements of the condition table are set to ON and OFF. However, a method may also be used in which a transient state when the state is switched from ON to OFF or from OFF to ON can be defined as a state. For example, in FIG. 1, displaying ON / OFF or the like in the input area 25 indicates a transient state when switching from ON to OFF. With this method, it is possible to define control at a more subtle timing.

Embodiment 5 FIG. 4 is a diagram showing a sequencer program creation screen according to the program creation method according to the fifth embodiment. In FIG. 4, 71 is a condition definition table,
Reference numeral 72 denotes an input area to be controlled, in which Y0012 is selected in this case. 73 in the condition table 75 is the control target Y0
This is an input area for defining conditions for controlling 012, and defines each element. 74 is a control target Y0012
, And corresponds to the condition definition table 71. In the first embodiment, a plurality of condition tables are defined for the same control target. In the fifth embodiment, the table form is used to define the AN of the state of each element in the horizontal direction.
The D condition is defined, and the vertical direction is a method in which the OR condition of the AND condition is defined on a single condition table. Therefore, according to the fifth embodiment, it becomes easy to define a condition when the same condition increases for one control target.

[0019]

As described above, according to the first aspect of the present invention, a sequencer program is created using a condition table, so that a graphical user interface becomes possible, thereby shortening the program design time.
In addition, it is possible to easily create a sequencer program by defining a complex condition by combining a simple condition table and easily create a high-quality sequencer program without knowledge of the ladder sequence. .

According to the second aspect, the condition table includes an input area for setting an element serving as a condition for controlling the controlled object, an input area for designating a state of the element set in the input area, An input area for designating the state of the control target when the condition is satisfied / unsatisfied is provided, so that it is possible to provide a condition table that can achieve the effects of the first invention.

According to the third invention, each element of the condition table is O
Since the condition table is connected by the R condition and the condition table is connected by the AND condition, when the condition definition is mainly defined by the OR condition, the condition can often be defined in the sheet of the same condition table. Thus, the number of sheets in the condition table can be reduced, and the effect of saving labor can be obtained.

According to the fourth invention, the state of each element of the condition table is defined as a state when a transition is made, so that control at more delicate timing can be defined. The effect is obtained.

According to the fifth aspect, a plurality of condition tables are arranged vertically and horizontally on the display screen, and the AND of the state of each element in the horizontal direction is provided.
Since the condition is defined and the OR condition of each element connected by the AND condition is defined in the vertical direction, it becomes easy to define the condition when the same condition increases for one control target. The effect is obtained.

[Brief description of the drawings]

FIG. 1 is a diagram showing a sequencer program creation screen by a program creation method according to Embodiment 1 of the present invention.

FIG. 2 is a diagram showing a change state of a screen in the first embodiment.

FIG. 3 is a diagram showing a sequencer program creation screen by a program creation method according to Embodiment 3 of the present invention.

FIG. 4 is a diagram showing a sequencer program creation screen by a program creation method according to Embodiment 5 of the present invention.

FIG. 5 is a diagram showing a sequencer program creation screen according to a conventional program creation method.

[Explanation of symbols]

9, 41, 51, 71 Condition definition table 21, 23, 2
4,25,26,27,28,42,45-50,5
2, 55-60, 72, 73 input area, 23a, 2
5a, 34a List button, 22, 44, 54 Condition table.

Claims (5)

[Claims] 1. A program for displaying, on a display screen, a condition table for defining under what conditions a control target is controlled to which state, and using the condition table to create a sequencer program How to make. 2. The condition table includes an input area for setting an element serving as a condition for controlling a control target, an input area for specifying a state of an element set in the input area, and when the condition is satisfied / not satisfied. 2. The program creating method according to claim 1, further comprising an input area for specifying a state of a control target at the time. 3. The method according to claim 1, wherein each element of the condition table is connected by an OR condition, and the condition table and the condition table are connected by an AND condition. 4. The program creating method according to claim 1, wherein a state of each element of the condition table is defined as a state when a transition is made. 5. A plurality of condition tables are arranged vertically and horizontally on a display screen, an AND condition of the state of each element is defined in a horizontal direction, and an OR condition of each element connected by the AND condition is defined in a vertical direction. 3. The method according to claim 1, wherein the program is created.