JP2875135B2 - Program device for programmable controller - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a method for automatically creating an OR circuit by editing a ladder diagram on a screen by managing the ladder diagram in a matrix based on the minimum unit element, or for creating a vertical line or a horizontal line. The present invention relates to a programmable controller program device for calculating and adding a length.

[0002]

2. Description of the Related Art Heretofore, as a reference technical document related to the present invention, there is "a peripheral device of a programmable controller" disclosed in Japanese Patent Application Laid-Open No. 2-82301. This is due to the peripherals of the programmable controller
When programming a ladder diagram, when adding a plurality of coils, the number of times of operating a vertical line or a cursor movement key is reduced, and operability is improved.

FIGS. 11 and 12 show other conventional examples. In this case, the operator inputs the arrow key 24 a plurality of times to move the cursor 8 to a desired position to shift from the display screen state shown in FIG. 11 to the display screen state shown in FIG.

In addition, as reference technical documents related to the present invention, a "flow diagram creating apparatus" disclosed in Japanese Patent Application Laid-Open No. Hei 4-100105 and a "sequence generating apparatus" disclosed in Japanese Patent Application Laid-Open No. 59-191610 are disclosed. Apparatus "and" Sequence
There is a program editing method.

[0005]

However, the prior art as described above has the following problems. That is, in the "peripheral device of a programmable controller" disclosed in Japanese Patent Application Laid-Open No. 2-82301, a cursor is moved to a position where a vertical line is to be input, and a vertical line key is input. After the coil is added, there is a troublesome work of erasing unnecessary vertical line protruding portions by moving the cursor to the left end, resulting in poor workability. 11 and FIG.
Similarly, in the case of FIG. 2, since an operation of moving the cursor to the position where the cursor is to be moved is required, the operation is troublesome and the operability is poor.

The present invention has been made in view of the above, and when performing a programming operation using a screen on which a ladder diagram is displayed, the number of key operations is reduced, and the workability and operability are reduced. It is an object of the present invention to obtain a program device for a programmable controller that can improve the programming efficiency and improve the efficiency of programming work.

[0007]

Means for Solving the Problems] program controller program device according to the present invention is a program device for a programmable controller for executing a program by connecting to the Programmer Lama logic controllers, as the screen information being edited, constituting the program The smallest unit
Storage means for storing data elements of the coordinates and the device classification, a coil or operation instruction from the input element to determine, before
To the coordinates and device classification data stored in the storage means.
It is determined whether or not to create an OR circuit based on
And control means for calculating the length of a vertical line or a horizontal line to be added when the R circuit is created.

The control means moves the cursor position on the screen being edited to the left end where the elements constituting the program exist, based on the input information.

[0009]

A program device for a programmable controller according to the present invention manages a screen being edited in a matrix based on the minimum unit elements constituting the program, and inputs coils and arithmetic instructions based on the information. To automatically create an OR circuit for
When it is determined that an R circuit is to be created, the length of a vertical line or a horizontal line required to create an OR circuit is calculated and added.

Further, the program device for a programmable controller according to the present invention moves the cursor position at one time to the left end where the elements constituting the program exist on the line where the cursor exists based on the obtained information.

[0011]

【Example】

Embodiment 1 Hereinafter, an embodiment of a program device for a programmable controller according to the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing a schematic configuration of a program device for a programmable controller according to the present invention. In the figure, reference numeral 1 denotes a peripheral device used by being connected to a programmable controller, which is configured to function as a program device for a programmable controller. That is, the peripheral device 1 includes a keyboard 2 for inputting various types of information, and X,
A memory 3 for storing the Y coordinate and the classification, and whether or not to automatically create an OR circuit for the input coil or operation command is determined. Alternatively, the control unit 4 that calculates the length of the horizontal line is connected to an output device C that performs monitor display.
RT6.

FIG. 2 is an explanatory view showing an example in which a circuit input on the edit screen is divided into a matrix, 7 is a ladder diagram edit screen displayed on the CRT 6, and 8 is a CRT 6
The upper cursor. FIG. 3 is a data table showing an example of data held inside the programmable controller program device when the ladder diagram shown in FIG. 2 is created.

FIG. 4 shows the generated ladder diagram.
It is explanatory drawing which shows the example which inputs a coil key, 9 is a coil key. FIG. 5 is an explanatory diagram showing a display state after a coil key is input and vertical and horizontal lines are added. FIG. 6 is a flowchart illustrating a processing operation of the control unit 4 that determines whether to automatically create an OR circuit.
FIG. 7 is a flowchart showing a processing operation of the control unit 4 for calculating the length of the vertical line and the horizontal line added when the OR circuit is created.

Next, the operation will be described. First, FIG.
The circuit shown in FIG. 1 is created by inputting from the keyboard 2 based on a conventional method. In this state, in the peripheral device 1, as shown in FIG. 3, the X, Y coordinates and the classification of the elements constituting the program are stored in the memory 3.
Each data of device classification such as coordinates, Y coordinates, contact points, coils, lines, and operation commands is created and held by characters on the screen.

In the above, when a coil or an operation command is further input by a key without moving the cursor 8 as shown in FIG. 4, an OR circuit is performed on the input coil or the operation command based on the data. Is determined.

Next, a process of determining whether or not to create the above-described OR circuit by the control unit 4 will be described with reference to a flowchart shown in FIG. First, it is determined whether the input key is a coil or an operation command (S1).
0). If it is determined in step S10 that the command is a coil or an operation command, the Y coordinate of the cursor 8 is stored (S11), and the Y coordinate and the X, Y coordinates and classification of the elements constituting the program are held. Memory 3
It is determined whether or not there is a device at the same Y coordinate of the data held by (1) (S12). This step S12
When it is determined that there is no device at the Y coordinate, an OR circuit is created based on the flowchart shown in FIG. 7 (S13).

The process for creating the OR circuit will be described with reference to the flowchart shown in FIG. In the process of creating this OR circuit, the length of the vertical line or horizontal line to be added is calculated. In FIG. 7, first, the X coordinate of the leftmost character when the coil or the operation command is arranged so as to be connected to the right bus, is A, and the Y coordinate at the position where the cursor 8 is located.
The coordinates are set to B (S14). Thereafter, a value obtained by adding 1 to a Y coordinate having a value smaller than B and having a device classification other than “none” is set to A0 (S15). For example, in FIG. 5, B0 = 1 and A0 = 3.

Next, it is determined whether or not A0 = A (S16). In this step S16, when it is determined that A0 = A, as shown in FIG. 5, (A0,
A vertical line is added between (B0) and (A, B) (S17).
Conversely, if it is determined in step S16 that A0 ≠ A, a vertical line is added between (A0, B0) and (A0, B), and (A0, B) and (A, B)
(S18). Then, after performing the processing of step S17 or step S18, the present processing ends.

As described in the above embodiment, when an OR circuit is created for a coil or an operation command, a vertical line and a horizontal line necessary for creating the OR circuit are automatically added. The number of operations can be reduced, and efficiency in program development can be improved.

Embodiment 2 Next, a second embodiment will be described. The overall configuration of the present embodiment is the same as the configuration of the peripheral device 1 shown in FIG. FIG. 8 is an explanatory diagram showing an example immediately before a cursor movement key is input to a created ladder diagram. In the figure, reference numeral 19 denotes a cursor movement key. FIG. 9 is an explanatory diagram showing a state after the cursor movement key 19 has been input. FIG. 10 is a flowchart showing the operation when the cursor movement key 19 is pressed.

Next, the operation will be described. In the flowchart shown in FIG. 10, first, when the cursor movement key 19 is pressed in the state shown in FIG. 8, the X coordinate and the Y coordinate of the cursor 8 are first shown (A, B).
Is stored (acquired) (S20). Next, it is determined whether or not there is a device classification having the same X, Y coordinates in the data held by the memory 3 that holds the X, Y coordinates and the classification of the elements constituting the program with A, B (S21). . If it is determined in step S21 that there is no device classification, A is added until there is no device classification （(S22). Thereafter, as shown in FIG. 9, the cursor is moved to the point indicated by the added A and the preceding B (S
23), end this processing.

As described in the above embodiment, when a contact or the like is to be inserted into a coil serving as an OR circuit,
Since the cursor moves to the insertion position once by inputting the cursor movement key 19, the number of key operations can be reduced, and the efficiency of program development can be improved.

[0023]

As described above, according to the program device for a programmable controller according to the present invention,
The screen being edited is managed by a matrix based on the minimum unit elements constituting the program, and whether to automatically create an OR circuit for a coil or an operation command input based on the information is determined. And when it is determined that an OR circuit is to be created, the length of a vertical line or a horizontal line required to create an OR circuit is determined and added.
When the programming operation is performed using the ladder diagram screen, the number of key operations is reduced, the operability is improved, and the efficiency of the programming operation can be improved.

According to the program device for a programmable controller of the present invention, the control means
Based on the obtained information, the cursor position can be moved at one time to the left end where the elements constituting the program are located on the line where the cursor is located, so that when performing the programming work using the ladder diagram screen, the key The number of operations is reduced, the operability is improved, and programming work can be made more efficient.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a schematic configuration (Examples 1 and 2) of a program device for a programmable controller according to the present invention.

FIG. 2 is an explanatory diagram illustrating an example (embodiment 1) of dividing a circuit input on an editing screen into a matrix.

FIG. 3 is an explanatory diagram showing an example of data (embodiment 1) held inside the programmable controller program device when the circuit shown in FIG. 2 is created.

FIG. 4 is an explanatory diagram showing an example (Example 1) of inputting a coil key to a created ladder diagram.

FIG. 5 is an explanatory diagram showing a state (Example 1) after inputting a coil key and adding a vertical line and a horizontal line.

FIG. 6 is a flowchart illustrating an operation (first embodiment) of a process of determining whether to automatically create an OR circuit;

FIG. 7 is a flowchart illustrating an operation (first embodiment) of a process for obtaining lengths of vertical lines and horizontal lines to be added when an OR circuit is created.

FIG. 8 is an explanatory diagram showing an example (second embodiment) immediately before a cursor movement key is input to a created ladder diagram.

FIG. 9 is an explanatory diagram illustrating a state (second embodiment) after a cursor movement key is input.

FIG. 10 is a flowchart illustrating an operation when the cursor movement key is pressed (second embodiment).

FIG. 11 is an explanatory diagram showing an edit screen and an arrow key before a cursor is moved in the related art.

FIG. 12 is an explanatory view showing a conventional editing screen after moving a cursor.

[Explanation of symbols]

 1 Peripheral device 2 Keyboard 3 Memory 4 Control unit 6 CRT 7 Ladder edit screen 8 Cursor 19 Cursor movement key

Claims (2)

(57) [Claims] 1. A program device for a programmable controller which executes programming by connecting to a programmable controller, wherein the screen information being edited is
The coordinates and devices of the smallest unit elements that make up the program
Storage means for storing classification data, and discriminating coils and operation instructions from input elements ,
Control means for judging whether or not to create an OR circuit based on the coordinates and device classification data, and calculating the length of a vertical line or a horizontal line to be added when the OR circuit is created. Program device for programmable controller. 2. The program for a programmable controller according to claim 1, wherein said control means moves a cursor position on a screen being edited to a left end where an element constituting the program exists, based on input information. apparatus.