JPH07287610A - Editing system of sequence program - Google Patents

Abstract

PURPOSE:To provide an editing system of a sequence program capable of changing the only one graphic element within a block. CONSTITUTION:Within a display screen 5, an SFC 5b is displayed. This SFC 5b is divided into plural blocks sectioned by a boundary line 5a and a graphic element is displayed for every block. An operator selects only one of the graphic elements displayed within the block and outputs a deletion command by a deletion command means 1. A deletion means 2 deletes the graphic element designated by a deletion command. The operator designates one of the blocks and outputs the additional command of the graphic element by an an additional command means 3. When an additional display means 4 receives an additional command, the means adds the graphic element to a designated block and displays the element. Thus, the only one graphic element within the block can be changed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sequence program editing system, and more particularly to a sequence function sequence (SFC) system sequence system capable of displaying a plurality of graphic elements in one block divided on a display screen. Regarding the program editing method.

[0002]

2. Description of the Related Art Generally, the expression format of a sequence program executed by a programmable controller (PC) includes a flow chart method in which the overall flow is easy to understand in addition to the expression formats such as logic description and ladder figure. In this flow chart method, a sequential function
There is a chart (hereinafter referred to as SFC) method.

In this SFC, various graphic elements represent the processing of each step, and the combination thereof represents the sequence program. The expressed operation program of each process is created by a logic description, a ladder program, or the like. The display screen of the SFC is divided into a plurality of virtually provided blocks, and various graphic elements are represented for each block. For graphic elements, like steps,
There are some graphic elements that can express only one graphic element in one block, and some graphic elements that can express two or more in one block such as transition and branch processing.

When a part of the SFC represented by the combination of these graphic elements is modified, the modification is carried out for each block. That is, after deleting all the graphic elements in the block in which the graphic element to be modified is displayed, a new graphic element is inserted into the block.

[0005]

However, in the conventional editing method, two or more graphic elements are displayed in one block, and only one of the plurality of graphic elements is changed. Even if there was, I had to delete everything in the block and insert a new graphic element again. Therefore, it is necessary to re-input graphic elements other than the graphic element to be changed.

As a result, there has been a problem that the operator has many operation procedures for correcting the SFC, and a lot of time is spent until the SFC is completed. The present invention has been made in view of the above circumstances, and an object thereof is to provide an editing method of a sequence program capable of changing only one graphic element in a block.

[0007]

According to the present invention, in order to solve the above problems, a sequence according to a sequential function chart (SFC) system capable of displaying a plurality of graphic elements in one block divided on a display screen. In the program editing method, delete command means for designating one graphic element in the block and outputting a delete command, delete means for deleting the graphic element designated by the delete command, and graphic designating the block Editing a sequence program, characterized by having additional command means for outputting a command to add an element, and additional display means for additionally displaying a graphic element in a designated block when the additional command is received. A scheme is provided.

[0008]

The delete command means outputs a delete command by designating only one graphic element in the block. The deleting means deletes the graphic element designated by the delete command. The additional command means outputs a command to add a graphic element by designating a block. Upon receiving the additional command, the additional display means additionally displays the graphic element in the designated block and displays it. As a result, only one graphic element in the block can be changed.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing a schematic configuration of the present invention. The display screen 5 is virtually delimited by a boundary line 5a. One area divided by the boundary line 5a is used as a block, and an SFC (sequential function chart) 5b displays each graphic element for each block. The operator selects only one of the graphic elements displayed in the block by the delete command means 1 using a keyboard, a mouse or the like and outputs a delete command. The deleting unit 2 deletes the graphic element designated by the delete command. As a result, even if multiple graphic elements are displayed in one block,
Only one graphic element can be deleted.

Further, the operator designates one of the blocks by the additional instruction means 3 using a keyboard, a mouse or the like, and outputs an instruction to add a graphic element. Upon receiving the additional command, the additional display means 4 adds the graphic element to the designated block and displays it. At this time, the additional display means 4
Check the processing contents of the graphic element already displayed in the block and the graphic element to be added, and add the graphic element at a position where there is no contradiction in the flow of processing. As described above, a graphic element can be newly added and displayed for a block in which one graphic element has been deleted.

FIG. 2 is a schematic configuration diagram of an automatic programming device for implementing the present invention. In the figure, the automatic programming device includes a processor 11, a ROM 12, and an RA.
M13, graphic control circuit 14, display device 15, keyboard 16, tablet 17, hard disk device (HDD) 18, floppy disk device (FDD) 1
9, a plotter 20, and a printer / paper tape puncher (PTP) 21. These components are connected to other components via the bus 10.

The processor 11 controls the entire automatic programming device according to a system program stored in the ROM 12. The RAM 13 stores data such as cutting shapes, cutting conditions, attributes and layers set in each step.

The graphic control circuit 14 is the processor 1.
The display data from 1 is converted and sent to the display device 15. The display device 15 receives the display signal and displays the screen.
This causes the SFC to be displayed. A CRT or a liquid crystal display device is mainly used as the display device 15.

The keyboard 16 is provided with a function key for selecting a graphic element when editing the SFC, a delete key for deleting the graphic element, and the like. The keyboard 16 can be used to select a block containing a graphic element to be changed and a graphic element to be changed in the block. Further, the tablet 17 is used to input the cutting shape.

The hard disk device 18 stores the created sequential program and SFC data. The floppy disk device 19 drives the floppy disk 19a to read out a sequential program or the like, or to create or edit a sequential program.
The program can be written in the floppy disk 19a.

The created sequential program includes the plotter 20 and the printer / paper tape puncher 2.
It can also be output to 1. Next, a specific procedure of an SFC (sequential function chart) editing method by the automatic programming device having such a configuration will be described.

FIG. 3 is a diagram showing a display screen before SFC correction. The display screen 15a is provided with a boundary line 30 divided into three columns M1 to M3 and five rows N1 to N5. That is, the boundary line 30 divides the display screen 15a into 12 blocks. After that, the column number Mm,
The block with the row number Nn is represented by adding the column number and the row number of the block after the block, such as the block MmNn. For example, the block in column M3 and row N2 becomes block M3N2. The vertical length of each block is constant for each column. The vertical length of the column is set according to the block that requires the maximum vertical length for displaying the graphic element in the blocks of the column.

In each block, various graphic elements 32a to 32a are provided.
2l is displayed. For the graphic element, only one graphic element 32 can be displayed in one block like a step.
a, 32f, 32g, 32h, and 32l, and graphic elements 32b, 32c, 32d, and 32 that can be displayed in plural in one block like transition and branch processing.
e, 32i, 32j, 32k. Cursor 33
Can usually be moved in blocks.

Below the display screen 15a is provided a menu display section 150 for displaying various graphic elements. In this example, the graphic elements of step, transition, selective branching process (open), selective branching process (close), parallel branching process (open), and parallel branching process (closed) are displayed in the menus 151 to 156, respectively. Has been done. Graphic elements that cannot be displayed on one screen can be displayed by switching the pages.

A graphic element 32c, 3 showing parallel branch processing (open) in each block of the row N2 of the SFC.
A procedure for changing 2d and 32e to graphic elements indicating selective branching processing (open) will be described. Figure 4 below
~ Each procedure for changing the graphic element and the display screens 15b to 15g in the procedure will be described with reference to Fig. 9, but in Figs. Since they are the same, the same parts are designated by the same reference numerals and the description thereof is omitted.

FIG. 4 is a view showing the display screen 15b when the cursor is moved to the block to be changed. The operator operates the keyboard 16 to move the cursor 33a to the block M1N2.

FIG. 5 is a view showing the display screen 15c when the delete key is first input. The processor 11 recognizes that the two graphic elements 32b and 32c are displayed in the block M1N2, and when the delete key is input by the operator, the cursor 33b moves the graphic element 32 to the graphic element 32.
The screen is displayed so as to indicate only b.

FIG. 6 is a view showing the display screen 15d when the delete key is input for the second time. The processor 11
When the operator inputs the delete key for the second time, the cursor 33c is displayed on the screen so as to indicate only the graphic element 32c.

FIG. 7 is a view showing the display screen 15e when the deletion command is executed. The delete command is output when the operator inputs the return key of the keyboard 16. Upon receiving the delete command, the processor 11 deletes the graphic element at the position of the cursor (cursor 33c shown in FIG. 6). After the deletion, only the graphic element 32b is left in the block M1N2, and the cursor 33d points to the entire block M1N2.

FIG. 8 shows the display screen 1 after adding the graphic element.
It is a figure which shows 5f. The operator issues a command to add a graphic element to select (open) in the menu display unit 150.
It is output by inputting the software key corresponding to. When the processor 11 receives the additional command, it displays the graphic element 32m of the selected branch (open) in the block M1N2 pointed by the cursor 33e. At this time, the graphic element 32 added by the processor 11
The processing content of m is compared with the processing content of the graphic element 32b, and the graphic element 32m is added at a position where no contradiction occurs between the two processings. In this example, since the graphic element 32b is a transition and the graphic element 32m is a selective branch (open), the graphic element 32m is additionally displayed on the graphic element 32b.

As a result, the graphic element 32c representing the parallel branch processing (open) in the block M1N2 is changed to the graphic element 32m representing the selective branch processing (open). Row N
The correction is completed by changing the other columns of 2 to parallel branch processing (open) in the same manner.

FIG. 9 shows the SFC display screen 15 after the correction is completed.
It is a figure which shows g. In this figure, the parts other than the blocks M2N2 and M3N2 are the same as those in FIG. 8, so the same parts are designated by the same reference numerals and the description thereof is omitted. Graphic elements 32n and 32o indicating selective branching processing and graphic elements 32p and 32q indicating transition are displayed in the blocks M2N2 and M3N2, respectively.

As described above, when the SFC is modified, only the graphic element to be modified is selected and deleted. And because I made it possible to add another graphic element to that block,
The correction can be made for each graphic element in each block.
This eliminates the need to re-input even graphic elements that do not need to be changed, and the operator can reduce the work procedure when correcting the SFC. As a result, the operator
The time spent on FC correction can be shortened.

In the above embodiment, the implementation in the automatic programming device has been described, but it can be implemented in the same manner in a programmable controller having a sequence program editing function.

[0030]

As described above, according to the present invention, the SFC
Since only one graphic element in the block can be changed when the correction is performed, the time spent for the correction work of the SFC can be shortened.

[Brief description of drawings]

FIG. 1 is a block diagram showing a schematic configuration of the present invention.

FIG. 2 is a schematic configuration diagram of an automatic programming device for implementing the present invention.

FIG. 3 is a diagram showing a display screen before SFC correction.

FIG. 4 is a diagram showing a display screen when a cursor is moved to a block to be changed.

FIG. 5 is a diagram showing a display screen when a delete key is first input.

FIG. 6 is a diagram showing a display screen when a delete key is input a second time.

FIG. 7 is a diagram showing a display screen when a delete command is executed.

FIG. 8 is a diagram showing a display screen after adding a graphic element.

FIG. 9 is a diagram showing a display screen of an SFC after correction is completed.

[Explanation of symbols]

 1 Deletion Command Means 2 Deletion Means 3 Additional Command Means 4 Additional Display Means 5 Display Screen 5a Boundary Line 5b SFC

Claims (3)

[Claims] 1. In a sequence program editing method by a sequential function chart (SFC) method capable of displaying a plurality of graphic elements in one block divided on a display screen, one graphic element in a block is displayed. Delete command means for specifying and outputting a delete command; delete means for deleting the graphic element specified by the delete command; addition command means for outputting a command for adding a graphic element by specifying a block; and the add command And an additional display means for additionally displaying a graphic element in a designated block, and a sequence program editing method. 2. The sequence program editing method according to claim 1, wherein the deletion command means is configured to switch the graphic element to be selected in the block each time the delete key is input. . 3. The editing method of a sequence program according to claim 1, wherein the additional command means is configured to output a command to add a graphic element by selecting a menu.