JPH0519816A - System for editing sequence program - Google Patents

Abstract

PURPOSE:To improve the operativity in the edition of a sequence program by combining a ladder graphic form and a mnemonic form. CONSTITUTION:A graphic screen where only the ladder diagram is displayed or a mnemonic screen where a program in mnemonic form is displayed in addition to the ladder diagram is selected S1. When only one signal is edited, the edition is performed in the graphic screens S7-S9 and when plural signals are edited in one network, on the other hand, the program displayed in the mnemonic form is edited in the mnemonic screens S2-S6. Once the program displayed in the mnemonic form is edited, the ladder diagram corresponding to it is also edited. When it is judged that an escape (ECS) key is depressed, the editing process is completed at S11.

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 method for editing a sequence program on a screen, and more particularly to a sequence program editing method in which a ladder diagram format and a mnemonic format are combined.

[0002]

2. Description of the Related Art Conventionally, sequence program editing methods include a method of displaying a ladder diagram format program on a display screen of a programming device and a method of displaying a mnemonic format program on a command line.

The ladder diagram format is edited by placing a cursor on a display portion (element) of a signal such as a contact or a coil to be changed and converting a new address or symbol.

On the other hand, in the mnemonic format, a net program including a signal to be edited is designated by a key and is called on the command line to edit data of a desired signal.

[0005]

However, the ladder diagram format can edit only the signal currently designated by the cursor. Therefore, when editing a plurality of contacts and coils, it is necessary to repeat cursor alignment and key input, resulting in poor operability.

In the mnemonic form, the net number must be specified by key input in order to call the desired net, which is a problem that it is difficult to understand. Therefore, operability was poor.

The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a sequence program editing method with improved operability by combining a ladder diagram format and a mnemonic format. To aim.

[0008]

In order to solve the above problems, in the present invention, in a sequence program editing method for editing a sequence program on a screen, a ladder diagram format program is displayed on the screen, Designate a program to be edited on the ladder diagram format program, display a mnemonic format program corresponding to the designated ladder diagram format program on the same screen, and edit the mnemonic format program. A featured sequence program editing method is provided.

[0009]

When the desired program is specified on the ladder diagram format program, the mnemonic format program corresponding to the specified program is displayed on the same screen.
Edit. Therefore, while the desired program can be selected on the ladder diagram, specific editing can be performed in the mnemonic format.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 2 is a block diagram of a programming device for implementing the present invention. The programming device 1 mainly includes a processor 2. A program memory 3 and a data memory 4 are coupled to the processor 2 via a bus 5. The program memory 3 stores a system program for operating the programming device 1. The data memory 4 stores a sequence program created by the programming device 1. This sequence program is stored in the object format and is displayed on the screen in the mnemonic format and the ladder diagram format.

The sequence program is input from the keyboard 6 and displayed on the display device 7. Further, the sequence program can be edited with the mouse 8 or can be printed out on the printer 9. Further, the sequence program may be stored in the hard disk device 12 which is an external memory. The created or edited sequence program is sent from the data memory 4 to the ROM writer 11 via the interface 10 and written in the ROM there. If necessary, PM
It is also possible to read the ladder program from the RAM of the PMC without removing the ROM from the C (program machine controller). In this case, data is exchanged via the interface 13.

FIG. 3 is a schematic view of the keyboard 6 and the display device 7. On the display screen 7a of the display device 7, a sequence program or the like being created or edited is displayed. A menu display unit 70 is provided below the display screen 7a. The menus 71 to 78 displayed on the menu display unit 70 can be switched at any time according to the display content of the display screen 7a. Selection of these menus 71 to 78 is performed by the function key 60 of the keyboard 6. Each key 61 to 6 of this function key 60
8 and the menus 71 to 78 are in one-to-one correspondence with each other. For example, when the key 61 is pressed, the menu 71 is selected.

The keyboard 6 has a character key 81 and a ten key 8 for use in inputting and editing a sequence program.
2 and are provided. Further, the keyboard 6 is provided with a return key 83, an escape (ESC) key 84, a cursor key 85 and the like.

Next, a specific procedure of the sequence program editing method of this embodiment will be described. FIG. 4 is a diagram showing a graphic screen 91 which is one of the editing screens. The graphic screen 91 has a ladder diagram 86 and a menu display section 7.
It consists of 0 and. Also, the ladder diagram 86 and the menu display 7
A command line 87 is provided between 0 and 0.
In the ladder diagram 86, the desired net can be displayed by scrolling the screen. In the menu display unit 70, symbols such as contacts and coils necessary for graphic editing and other menus 71 to 78 are displayed. A mnemonic screen selection menu 77 and a graphic screen selection menu 78 are displayed on the menu display unit 70. Graphic screen 91 of FIG.
Is displayed by pressing the function key 68 in FIG. 3 and designating the graphic screen selection menu 78.

When it is desired to edit only the signal 86a, the cursor 88 is moved to the signal 86a. The cursor 88 can be set for each signal, that is, for each element of the ladder diagram. When it is desired to correct the data of the signal 86a from X12.3 to X12.5, the keyboard 6 inputs the data X12.5. This key input data is displayed on the command line 87. If you want to confirm this new data, press the return key 8
Press 3. As a result, the sequence in the data memory 4
The program is converted as shown and the data is fixed internally. Further, when it is desired to change the symbol of the signal 86a, any one of the menus 71 to 74 is selected. This selection is made by pressing the corresponding one of the function keys 61-64. As an example, the menu 72 is specified here. And to confirm this data, return key 8
Press 3. This internally edits the data. FIG. 5 is a diagram showing the edited graphic screen 91.
As can be seen from the figure, the data of the signal 86a and the representation of the symbol are also converted.

As described above, when the data of some signals is edited, it can be easily performed on the graphic screen 91. However, in the case of editing a plurality of signals of the same net, it is necessary to repeat cursor alignment, return key input, etc., and input errors are likely to occur. Therefore, in the present embodiment, when a plurality of signals of the same net are edited, the display screen 7a is switched to the mnemonic screen 92 for editing. That is, the function key 67 of the keyboard 6 is pressed to specify the mnemonic screen selection menu 77. As a result, the display screen 7a is switched from the graphic screen 91 to the mnemonic screen 92 of FIG. When switching to the mnemonic screen 92, the cursor 88 moves onto the command line 87. Also, the signal 86a
A net including a line is surrounded by a line 93, and the line 93 is highlighted.

The net program enclosed by the line 93 is displayed on the command line 87 as a mnemonic type program 89. The operator is the cursor 88
Correct the letter or number at the position. If the correction is not necessary, the cursor key 85 is used to move the cursor 88 to the position to be corrected next. For example, the data R X12.3 (READ X12.3) of the signal 86a is changed to R X.
12.5 (READX12.5), and the data A R2.3 (AND R2.3) of the signal 86b is AN R
To correct to 4.5 (AND.NOT R4.5), the cursor 88 is placed under the character or number to be converted, and new data is input by the character key 81 or the ten key 82. When confirming these new data, the return key 83 is pressed. This will convert the sequence program in the data memory 4 as shown,
Data is edited internally. When the cursor 88 is moved on the command line 87, the return key 83 may be kept pressed instead of the cursor key 85.

FIG. 7 is a diagram showing the mnemonic screen 92 after editing. As you can see from the figure, command line 8
7, the data of signals 86a and 86b of the ladder diagram 86 can be rewritten. In this way, to continue editing within the same net surrounded by the line 93, it is sufficient to perform continuous editing on the command line 87 and finally press the return key 83. Alternatively, the return key 83 may be pressed each time a character or number is keyed in one by one. If you want to edit the signal of another net, select the graphic screen 91 again,
The same operation may be performed. When you finish editing, ES
Press the C key 84 to finish.

FIG. 1 is a flow chart for explaining the processing procedure of the editing method of the sequence program of this embodiment. In this processing, the display screen 7a is the graphic screen 91.
Alternatively, it is started when the mnemonic screen 92 is selected. The number following S indicates the step number. [S1] It is determined whether or not the mnemonic screen 92 is selected, and if so, the process proceeds to step S2. If the graphic screen 91 is selected, the process proceeds to step S7. [S2] The net including the signal designated by the cursor 88 is surrounded by a line 93, and the line 93 is highlighted. [S3] The mnemonic type program 89 is displayed on the command line 87. [S4] Wait for data input. [S5] It is determined whether or not the data input by the key is internally edited, that is, whether the return key 83 is pressed after the data is input. If the return key 83 is pressed, the process proceeds to step S6. If not, that is, the function key 68 is pressed to switch the screen selection to the graphic screen 91 or the ESC key 84.
When is pressed to end the editing, step S10
Proceed to. [S6] The data key-inputted on the mnemonic screen 92 is internally edited. [S7] The cursor of the signal is designated, and the input of new data of the designated signal is waited for. [S8] It is determined whether or not the data input by the key is internally edited, that is, whether the return key 83 is pressed after the data is input. If the return key 83 is pressed, the process proceeds to step S9. If not, that is, the function key 67 is pressed to switch the screen selection to the mnemonic screen 92, or the ESC key 84.
When is pressed to end the editing, step S10
Proceed to. [S9] The data key-inputted on the graphic screen 91 is internally edited. [S10] It is determined whether the screen is selected by pressing the function key 67 or 68, and if so, the process returns to step S1. If not, the process proceeds to step S11. [S11] Determine whether the ESC key 84 has been pressed,
If it can be confirmed that the button has been pressed, the process ends, and if not, the process proceeds to step S12. [S12] It is determined that a key input error has occurred, and an alarm is displayed on the display screen 7a to inform the operator of that fact.
Return to step S5.

As described above, in the present embodiment, the selection of the signal to be edited is performed intuitively by making the selection on the graphic screen 91, and there are a plurality of signals to be edited in the same net as the selected signal. in case of,
By performing the editing on the mnemonic screen 92, key input is simplified. Therefore, operability is good.

[0021]

As described above, according to the present invention, when a desired program is designated on the ladder diagram format program, the corresponding mnemonic format program is displayed on the same screen. While the program can be selected on the ladder diagram, specific editing can be done in the mnemonic format. Therefore, the program selection is easy to understand and the key input for editing is easy, so that the operability is improved.

[Brief description of drawings]

FIG. 1 is a flowchart illustrating a processing procedure of a sequence program editing method according to an embodiment of the present invention.

FIG. 2 is a block diagram of a programming device for implementing the present invention.

FIG. 3 is a schematic diagram of a keyboard and a display device.

FIG. 4 is a diagram showing a graphic screen.

FIG. 5 is a diagram showing a graphic screen after editing.

FIG. 6 is a diagram showing a mnemonic screen.

FIG. 7 is a diagram showing a mnemonic screen after editing.

[Explanation of symbols]

1 programming device 2 CPU 3 program memory 4 data memory 7 Display 7a display screen 60 function keys 70 Menu display section 81 character key 82 Numeric keypad 83 Return key 84 Escape (ESC) key 85 cursor key 86 ladder diagram 87 Command line 88 cursor 89 Mnemonic format programs 91 Graphic screen 92 Mnemonic screen 93 lines

Claims (4)

[Claims] 1. A sequence program editing method for editing a sequence program on a screen, wherein a ladder diagram format program is displayed on the screen, and a program to be edited is specified on the ladder diagram format program. A mnemonic format program corresponding to the designated ladder diagram format program is displayed on the same screen, and the mnemonic format program is edited. 2. The editing of the sequence program according to claim 1, wherein when the mnemonic format program is edited, the display of the corresponding portion of the ladder diagram format program is changed to the edited content. method. 3. The screen can be switched between a graphic screen for designating a program to be edited on the program in the ladder diagram format and a mnemonic screen for editing the designated program. The editing method of the sequence program according to item 1. 4. The sequence program according to claim 3, wherein a net program including an element designated on the graphic screen is displayed on the command line in the mnemonic format on the mnemonic screen. Editing method.