JPH06250708A - Method for checking sequence program of programming device - Google Patents

Abstract

(57) [Summary] [Purpose] To simplify the check processing of the sequence program and shorten the processing time. [Structure] The user can select the type of check items from the keyboard 1
3, and in response to this instruction, the CPU 10 performs a check process for only the instruction check item on the sequence program.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for checking a sequence program of a programming device which is executed in a programming device of a programmable controller for creating a sequence program executed by a programmable controller and checking the created sequence program.

[0002]

2. Description of the Related Art Conventionally, it is known that a programmable controller arithmetically executes a sequence program to automatically control electronic equipment. The sequence program is created by a programming device connected to the programmable controller. The sequence program can be modified even while the programmable controller is operating. When creating a sequence program, when the user inputs a sequence command from the keyboard, the sequence command is displayed in the form of a circuit diagram on the display screen of the display. The user sequentially inputs sequence commands while looking at the display screen to create a sequence program. The sequence command thus input is stored in the user program memory in the programming device.

On the other hand, when modifying the sequence program executed by the programmable controller, the sequence program is transferred from the programmable controller to the programming device. In the programming device, the sequence program is temporarily stored in the user program memory, and the sequence program is displayed in a graphic form on the display screen. Thereafter, as in the case of creating the sequence program, editing processing such as addition and deletion of the commands of the sequence program is performed. After the above-described sequence program creating process and correction process, the grammar check for all program instructions in the sequence program is performed on the programming device in response to a grammar check instruction from the user. This grammar check performs some checks such as whether the sequence command is written in the correct format, some program commands have the correct connection relationship with the adjacent program command, and whether there is a dual output command. is there. The sequence program after the syntax check is sent to the programmable controller.

It is also possible to store the created / corrected sequence program in a floppy disk, read the sequence program of the floppy disk on the programming device, and modify it to create a new sequence program.

[0005]

Conventionally, when a user gives a check instruction to a sequence program, the programming device targets all sequence instructions on the sequence program. Even if only one sequence instruction is changed, there is a problem that the program check takes time. For this reason, a program check method has been proposed in which the user specifies the range of checks on the sequence program. However, in this proposal, if a large number of check points are discontinuous, an operation for specifying the range is performed. There is still room for improvement in that it is complicated.

Therefore, in view of the above points, an object of the present invention is particularly suitable for checking a modified sequence program, and a novel method for checking a sequence program of a programming device capable of simplifying a user's instruction operation. To provide.

[0007]

In order to achieve such an object, the present invention provides a sequence program check method of a programming device for executing a plurality of types of check processing for a created sequence program, in which the programming is performed. It is characterized in that the type of check processing is instructed to the apparatus, and the programming apparatus selectively executes the check processing of the instructed type of content from the plurality of types of check processing.

[0008]

According to the present invention, unnecessary check processing is eliminated by instructing and executing the check processing corresponding to the type, and the processing time of the entire check processing is shortened.

[0009]

Embodiments of the present invention will now be described in detail with reference to the drawings.

Prior to describing the present invention, a programming device will be described. FIG. 2 shows the circuit configuration of the programming device.

In FIG. 2, a central processing unit (CP
U) 10 creates and edits a sequence program according to the system program in the system memory 11. In the system memory 11, in addition to a system program for creating a sequence program, a program area for storing a check program according to the present invention,
A work area for storing input / output information for the CPU 10 is provided. In the work area, program instructions to be changed input from the keyboard 13 and flag information according to the present invention are temporarily stored. This flag information indicates whether or not to execute the check for each check item in the 1/0 ON / OFF mode (see FIG. 3).

A sequence program is created and edited on the user program memory 12. Keyboard 13
The operation instruction and the program editing content for the CPU 10 are input from. The sequence program being created or edited is displayed on the display unit 15. The created and modified sequence program is transferred to the programmable controller via the I / O 14. The display 15 displays the information instructed by the CPU 10.

The program check processing executed in such a configuration will be described.

After creating the sequence program, the user instructs the keyboard 13 to check the created program. In response to this instruction, the CPU 10 executes the control procedure of FIG. First, the CPU 10 initializes all the flag information of the work area to 0. Then, the CPU 10 is shown in FIG.
The display 15 displays a menu as shown in FIG. Seeing this display, the user instructs the necessity of checking for each check item from the keyboard 13 (S10). After the user selects a check item (S20), the CPU 10 sets the flag information of the work area to 1/0 in response to this instruction (S30).

The CPU 10 secures a storage area for initial information and tables required for execution and check items required in the work area in the system memory 11 (S40). After such initial processing, the CPU 10 starts checking the sequence program in the user program memory 12. More specifically, the CPU 10 sequentially reads the sequence commands from the beginning of the sequence program and performs the check instructed to be executed (S50 to S60). At this time, C
The PU 10 confirms the flag information of the work area and executes the flag-on check (S100 to S12 in FIG. 5).
5). If an error is detected in the check processing, C
The PU 10 displays the error content on the display screen of the display device 15 (S70 to S75). When the selection check process is executed for all the sequence instructions on the sequence program in this way, the CPU 10 ends the control procedure of FIG. 4 and ends the check process.

As described above, in this embodiment, since the check items can be selected, the following check instruction can be given. For example, when creating a completely new sequence program, all errors are included, so select all check items. Further, when the created sequence program is partially modified, only the check items related to the modification instruction are selected. Therefore, the programming device does not need to execute unnecessary check processing as in the conventional case, and the time required for the check processing is shortened.

In addition to this embodiment, the following example can be implemented.

1) In this embodiment, the check item is selected according to the user's instruction to start the check process.
It is also possible to select the check items in advance.
In this case, when the power is turned on, the CPU 10 is caused to execute the processing procedure of S10 to S30 of FIG. 4 to create the flag information. When the user gives an instruction to start the check process, the flag information is displayed and after confirming the user,
The selection check process is performed in the procedure of S40 to S80 in FIG.

2) By adding the conventionally known check range designation mode and all-check item designation mode to the menu screen of FIG. 1, the user can select a suitable check process according to the check content.

3) The flag information indicating the check items for selection may be added to the sequence program.
In this case, the flag information is described in the comment area in the sequence program. When the check instruction is received, the flag information on the sequence program is changed to C
The PU 10 reads out and displays, and receives an instruction of a new check selection item from the user. This display allows the user to know the history of checking the sequence program to be modified.

[0021]

As described above, according to the present invention, since the user only needs to specify the necessary check items, the pointing operation is simple and the processing time is shortened.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing a display example of an embodiment of the present invention.

FIG. 2 is a block diagram showing a circuit configuration of a programming device according to an embodiment of the present invention.

FIG. 3 is an explanatory diagram showing contents of flag information.

FIG. 4 is a flowchart showing a processing procedure executed by a CPU 10 of FIG.

5 is a flowchart showing a processing procedure executed by the CPU 10 of FIG.

[Explanation of symbols]

 10 CPU 11 System Memory 12 User Program Memory 13 Keyboard 14 I / O 15 Display

Claims (1)

[Claims] 1. A method for checking a sequence program of a programming device that executes a plurality of types of check processes for a created sequence program, wherein a type of check process is instructed to the programming device, and the programming device is instructed. A method for checking a sequence program of a programming device, characterized in that the checking process of the specified kind contents is selectively executed from the plural kinds of checking processes.