JPH04271404A - Programming device for programmable controller - Google Patents

Abstract

PURPOSE:To add individual comments by storing and outputting comments for display in relation to sequence instructions. CONSTITUTION:The device is provided with a designating means 1000 which designates a sequence instructions in a sequence program, an input means 1100 for comment input, a storage means 1200 where the inputted comment is stored in relation to the designated sequence instruction, and a read means 1300 which reads out the stored comment to display it at the time of displaying the sequence instruction of the sequence program. Thus, individual comments are added to contact instructions sharing a contact number, and comments are given to sequence instructions, to which comments cannot be added in a conventional device, on demand.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a programming device for creating a sequence program to be executed by a programmable controller.

0002

2. Description of the Related Art A programmable controller receives a signal (input contact signal) indicating an operating state from a device to be controlled and outputs a signal (output contact signal) instructing the operation of the device to be controlled based on a sequence program. When creating a sequence program for executing such processing using a programming device, a user inputs sequence commands from a keyboard input device. The programming device displays input sequence commands in the form of a sequence circuit diagram (referred to as a ladder diagram) as shown in FIG. Further, sequence instructions are stored in a user program memory inside the device in the form of instruction codes executable by the programmable controller.

[0003] The user specifies a contact number on the display screen with a cursor and inputs a comment for the contact number, ``manual'' in the example of FIG. 10, from a keyboard input device. The programming device stores comments in the user program memory in association with contact numbers.

[0004] When displaying a created user program,
When displaying a contact number, the programming device reads and displays a comment corresponding to the contact number in the user program.

[0005]

[Problems to be Solved by the Invention] However, when comments are stored in correspondence with contact numbers, the following problems occur.

1) Some sequence instructions include, for example,
1 When setting the ON/OFF of an input contact, there is a contact command that automatically inputs the A contact command and manually inputs the B contact command, and the same contact number is assigned to both the A contact command and the B contact command. If you enter a comment, a contact, b
The comment content is the same for both contact points. Another sequence command that has multiple contact commands for the same contact number is one that activates a contact connected to a certain contact when the level of that contact is on or off.

2) When there are two contacts sharing the same contact number as described above, if you want to print the sequence program as shown in Figure 11, leave the comment field blank,
You will have to handwrite your comments afterwards.

SUMMARY OF THE INVENTION In view of the above-mentioned points, an object of the present invention is to provide a programming device that allows comments to be individually added to contact commands on sequence programs that share contact numbers. .

[0009]

[Means for Solving the Problems] In order to achieve such an object, the present invention provides a programming device for a programmable controller that can display a created sequence program with comments attached thereto. a specifying means for specifying an instruction; an input means for inputting a comment; a storage means for storing the input comment in association with a sequence instruction specified by the specifying means; and displaying a sequence instruction of the sequence program. The present invention is characterized by comprising reading means for reading out a comment stored in the storage means corresponding to the sequence command for display.

0010

[Operation] In the present invention, since comments for display are stored in association with sequence commands, it is possible to attach individual comments to contacts that share a common contact number.

[0011]

Embodiments Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 shows the basic configuration of an embodiment of the present invention.

The programming device of this embodiment is a programming device for a programmable controller capable of displaying a created sequence program with comments added thereto, and includes a designating means 1000 for designating a sequence command in the sequence program; an input means 1100 for inputting a comment; a storage means 1200 for storing the input comment in association with a sequence command designated by the designation means 1000; and corresponding reading means 1300 for reading out comments stored in the storage means 1200 for display.

Prior to explaining the present invention, the system configuration of the programmable controller will be explained with reference to FIG.

The programming device 5 and the programmable controller 1 are connected by a transmission cable 2, and in addition to creating a sequence program in the programming device 5, startup instructions etc. to the programmable controller 1 are inputted from the keyboard input device 4, and the programmable The operating state of the controller 1 is monitored on the display 3. Further, the cam switch for specifying the automatic/manual a contact and the b contact described in the conventional example is connected to the programmable controller 1.

FIG. 3 shows a specific circuit configuration of the programming device 5 shown in FIG. 2 related to the present invention.

In FIG. 3, a central processing unit, a system program memory 11, a system work memory 12,
A user program memory, display 3, and keyboard input device 4 are connected to a common bus.

[0018] The CPU 10 is a system program memory 1.
1 and executes the following processing.

(1) In the program creation mode, the sequence command input from the keyboard input device 4 is created on the user program memory 13, and the display 3
displayed in the form of a ladder diagram.

(2) In the comment input mode, a comment input from the keyboard input device 4 is stored in the user program memory 13 in association with a sequence command, and the comment is read out when displaying the sequence program. At this time, the CPU 10 operates as a reading means of the present invention, and the keyboard input device 4 operates as a specifying means and an input means.

(3) Other control processing similar to the conventional one is executed.

The system program memory 11 is the CPU 1
A system program that defines the process to be executed by the computer 0 is stored, and a system program that defines the control procedure shown in FIG. 5 is also stored in the system program memory 11.

The system work memory 12 temporarily stores information used for arithmetic processing by the CPU 10 and information to be displayed on the display 3.

The user program memory 13 has a user program area and a comment area which operates as a storage means of the present invention, and creation and editing of sequence programs are performed on the user program area.

The comment area is associated with the storage address of the sequence instruction as shown in FIG. 4, and stores a comment table for up to two comments per one sequence instruction. The comment area also stores information indicating the number of comments used for display and the storage address of the comment table.

[0026] Comment creation processing in such a circuit will be explained.

With the mode selection screen A shown in FIG. 6 displayed on the display 3, the user presses the keyboard input device 4.
When the comment mode is selected by
Execute control procedures.

That is, after displaying display B in FIG. 6 on the display 3, the CPU 10 waits for a user's instruction regarding the number of comments from the keyboard input device 4 (step S10).
~S20).

For example, if the number of comments is “1” by the user,
When is selected, the CPU 10 determines the type and content of the number of input comments, and sets a storage area for a comment table for one comment. Specifically, a comment start address and a comment end address are set and stored in the comment area, and information on the number of comments is also set and stored in the comment area (steps S30→S40).

Next, the CPU 10 reads the created sequence command from the first address of the user program memory 13, and determines whether the sequence command is a contact-related command by code identification. When a contact-related command is detected in this manner, the CPU 10 displays the contact number defined in the command as shown in display C in FIG. 6 (steps S50→S60).

Next, the CPU 10 detects the sequence command specified by the cursor on the display screen, and sequentially stores the comment information input from the keyboard input device 4 in the comment table of the user program memory 13. (Step S70→S80).

The keyboard input device 4 at this time operates as the designation means and input means of the present invention.

By executing such processing, a comment is attached to each contact-related sequence command. Further, when displaying a sequence program, the number of comments stored in the comment area and the storage address range are referred to, and each time a contact-related sequence command is displayed, a corresponding comment is read and displayed by the CPU 10. The CPU 10 at this time operates as the reading means of the present invention.

As a result, since the sequence commands are different for contacts having a common contact number as shown in FIG. 7, comments can be displayed individually.

Note that if the number of comments is specified as two, two comments will be input after specifying the sequence command. The rest is the same as the storage process and display process for one comment, and detailed explanation will be omitted.

In this embodiment, comments are displayed for sequence commands related to contacts, but comments can be created corresponding to sequence commands, so for example, for sequence commands that instruct OR operations or AND operations. You can also add comments.

[0037] Also, the number of comments added to the sequence command is 1.
Since it is possible to display not only one contact but also two contacts, it is also possible to display various comments such as an explanation of the function of the contact and the device name.

In addition to this embodiment, the following examples are given.

1) In addition to this embodiment, the following method can also be used for inputting comments.

a) Display the created sequence program in the form of a ladder diagram as shown in FIG. 8, specify a sequence command by specifying the cursor on the display screen, and input a comment for this sequence command. In this case, a comment input mode key is provided on the keyboard input device 4 and the comment input mode is set by pressing this key.

b) Display the sequence program in the form of a programming language (mnemonic expression) as shown in FIG. 9, and input a comment regarding the sequence command specified by the cursor.

[0042]

[Effects of the Invention] As explained above, according to the present invention, not only can comments be attached individually to contact commands that share a contact number, but also comments can be added to other contact commands that are not conventionally possible. This has the advantage that comments can be added to sequence commands that could not be written as needed.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the basic configuration of an embodiment of the present invention.

FIG. 2 is a perspective view showing the system configuration of an embodiment of the present invention.

FIG. 3 is a block diagram showing a specific circuit configuration of an embodiment of the present invention.

4 is an explanatory diagram showing the contents stored in the user program memory 13 of FIG. 3. FIG.

FIG. 5 is a flowchart showing a control procedure executed by the CPU 10 in FIG. 3;

FIG. 6 is an explanatory diagram showing the contents of a display screen related to comment creation in the embodiment of the present invention.

FIG. 7 is an explanatory diagram showing a display example of a sequence program according to an embodiment of the present invention.

FIG. 8 is an explanatory diagram showing another method of inputting comments in the embodiment of the present invention.

FIG. 9 is an explanatory diagram showing another method of inputting comments in the embodiment of the present invention.

FIG. 10 is an explanatory diagram showing an example of displaying comments in a conventional example.

FIG. 11 is an explanatory diagram showing an example of printing a conventional sequence program.

[Explanation of symbols]

1 Programmable controller 2 Transmission line 3 Display unit 4 Keyboard input device 5 Programming device 10 CPU 11 System program memory 12 System work memory 13 User program memory

Claims (1)

[Claims] 1. A programming device for a programmable controller capable of displaying a created sequence program with comments attached thereto, comprising: a designation means for designating a sequence command in the sequence program; an input means for inputting a comment; and the input means for inputting a comment. storage means for storing the comments in association with the sequence commands designated by the designation means; and when displaying the sequence commands of the sequence program, the comments stored in the storage means corresponding to the sequence commands. A programming device for a programmable controller, comprising reading means for reading comments for display.