JPH10111703A - Programming device for programmable controller - Google Patents

Abstract

PROBLEM TO BE SOLVED: To immediately recognize an operand which the user of a programming device inputs by viewing by selecting either a label or an address so as to display it at the time of displaying the operand on the display device. SOLUTION: The programming device 1A generating, correcting and displaying the program of a programmable controller is provided with a label/ address selection means 4 for selecting by which system of the label or the address the operand is displayed at the time of displaying it used for a program on the display device 11. Data on the operand which is read by using a program read part 33A from a program storage part 31 storing the program is converted into the selected system and is displayed on the display device 11 based on data stored in the label/address selection means 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a programming device for creating and displaying a program module in a programmable controller.

[0002]

2. Description of the Related Art FIG. 2 is a block diagram showing a configuration of a programming device. In this figure, 1 is a programming device, 2 is a programmable controller, and the programming device 1 comprises a processing unit 13, a display device 11, an input device 12, a storage unit 14, and an interface unit 15. Since the programmable controller 2 is not directly related to the present invention, the illustration and description of its specific configuration will be omitted.

A processing unit 13 is an operation unit of a programming device mainly including a CPU. The processing unit 13 receives data input from an input device 12 such as a keyboard,
The content is displayed on the display device 11, data is exchanged with the storage unit 14 that stores various data, and data is exchanged with the programmable controller 2 via the interface 15.

FIG. 3 is a functional block diagram showing the programming device of FIG. 2 for each function. In this figure, abbreviations are used to simplify the drawings, but each abbreviation is shown in Op. Is an operand, Pr. Is a program,
L represents a label, and A represents an address. The correspondence with FIG. 2 is that the program storage unit 31 and the L / A allocation storage unit 36 are provided in the storage unit 14 of FIG. The input unit 34 and the L / A assignment input unit 38 are functions of the input device 12 in FIG. 2, and the user of the programming device 1 operates the input device 12. Op. And O of L / A assignment data
p. Input to the input unit 34 and the L / A allocation input unit 38 is performed by this user. Pr. Editing unit 32, Pr. The reading unit 33 and the L / A assignment writing unit 37 are both processing units 13
This is a function included in the software that is operated on.
The programming device 1 may be a dedicated device generally called a loader, or a versatile personal computer may be used. In the case of a personal computer, the main body and the display device 11 may be separate from each other, and a frame surrounding other blocks except for the display device 11 in the rectangular frame indicating the programming device 1 in the figure is such a frame. 3 shows a portion corresponding to the main body of the personal computer in the case.

[0005] When a user of the programming device 1 corrects or creates a program, the user is required to make the program in Op. The operand is character-input via the input unit 34, and the input data is Pr. The program is stored in the program storage unit 31 via the editing unit 32, and the Pr. Read unit 33, Pr. While the contents are displayed on the display device 11 via the display unit 35, the correction or creation work proceeds.

[0006] The programming languages for the programmable controller include SFC (System Function Chart) and FB (Func
tionBlock) There is something called a diagram. In the ladder diagram, a program is generated by defining various circuit elements constituting the control circuit as symbols, inputting the symbols and connecting them to form a circuit. Operands indicate data for distinguishing symbols, control variable data, etc. One operand corresponds to the address of the storage unit that stores these data, and it is also possible to input using this address. Yes, but in practice the address is a string of numbers that makes it difficult for the user to distinguish, so the name given to this address, a character string usually expressed as an alphanumeric character called a label, is used instead of the address . One label corresponds to one operand and, of course, one address. Since the label is an alphanumeric character, it is possible to adopt an alphabetic character that makes it easy for the user to determine what the operand means.

Although FIG. 3 shows that only operands are input as data for creating a program, actually, data for creating another ladder diagram such as the aforementioned symbols is input. In the present invention, only the operands are described, so only the functions related to the operands are described. In addition, since operands are used in programming languages other than the above-described ladder diagrams, the present invention is also applied to these languages.

Addresses and labels of operands used for program creation are input as label / address assignment data (L / A assignment) shown in FIG.
8. L / A assignment storage unit 3 via L / A assignment writing unit 37
6 is stored. The user inputs operands during the process of creating or modifying a program, either by label or by address. By detecting a difference in the form of a character string, Pr. The editing unit 32 knows where the operand was input. If the operand was input by label, it is written as it is in the program storage unit 31. If the operand was input by address, the data in the label / address allocation storage unit 36 is deleted. The label corresponding to the input address is searched for and written into the program storage unit 31.

The display of the operand by the display device 11 is as follows.
When the Pr. The operand is read together with the symbol and the like by the reading unit 33 and Pr. The data is sent to the display unit 35 and displayed on the display device 11. Therefore, even if the user inputs the operand by the address, it is displayed on the display device 11 by the label.

[0010]

As described above, even when a user inputs an operand by an address, the display device 1 can be used.
Since a label is displayed on the number 1, the user cannot visually check the display device 11 to determine whether the input address is correct. Therefore, it is necessary to check the correspondence between the label and the address prepared in advance while looking at the correspondence list, and there is a problem that the efficiency of the program creation and correction work is low.

[0011] An object of the present invention is to solve such a problem, and when displaying an operand on a display device, either a label or an address is selected and displayed.
It is an object of the present invention to provide a programming device for a programmable controller, which allows an operator to immediately confirm an operand input by a programming device on a display device.

[0012]

According to the present invention, there is provided a programming device for creating, modifying, and displaying a program of a programmable controller when displaying operands used in the program on a display device. , A label / address selecting means for selecting a format to be displayed, a label or an address, and reading out from a program storing section for storing a program based on data stored in the label / address selecting means. By converting the data regarding the operands into a selected format and displaying the data on a display device,
The label can be displayed on the display device when the user inputs the operand with the label, the address when the address is input with the address, and the same format as the operand when inputting, so that the user can create or modify the program. In the operation, when inputting the operand in either format, the input operation of the operand can be performed while visually confirming on the display device.

Further, the label / address selection means is provided with a label / address to which data relating to label / address selection is inputted.
A label can be easily formed by comprising an address selection input section, a label / address selection storage section for storing the input data, and a label / address selection writing section for writing the input data to the label / address selection storage section. /
Address selection means can be realized.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on embodiments. FIG. 1 is a functional block diagram of a programming device showing an embodiment of the present invention. In FIG. 1, the same abbreviations as those in FIG. 3 are used, the same components are denoted by the same reference numerals, and similar components are denoted by subscripts A. Omit duplicate descriptions.
The programming device 1A shown in FIG. 1 adds a function of selecting whether to display a label or an address when displaying an operand on the display device 11 to the programming device 1 shown in FIG.

The elements added to the programming device 1A of FIG. 1 with respect to the programming device 1 of FIG. 3 are L / A
The label / address selection means 4 includes a selection input section 43, an L / A selection writing section 42, and an L / A selection storage section 41. The reading unit 33A. The user inputs L / A selection data in advance into the L / A selection input section 4.
3 and the input data is stored in the L / A selection storage unit 36 by the L / A selection writing unit 42. L
The / A selection data is used to select whether to display the operand on the display device 11 as a label or an address. It is common to select display of a label when the user inputs with a label, and display of an address when inputting with an address.

Regardless of whether the user inputs the operand by label or address, the operand is stored in the program storage unit 31 by the label as in the conventional apparatus. The display device 1 reads a program from the program storage unit 31 and
1 is displayed in Pr. The reading unit 33A refers to the data of the L / A selection stored in the L / A selection storage unit 41, and if it indicates a label display, reads the label stored in the program storage unit 31 as it is. Pr. If the address is displayed on the display unit 35 and indicates an address display, the label stored in the program storage unit 31 is obtained by referring to the data in the L / A allocation storage unit 36 to obtain an address corresponding to the label. Pr. It is sent to the display unit 35. The display device 11 has Pr. The display is performed based on the data sent from the display unit 35.

The user can visually confirm the operand in the same format as the operand at the time of input on the display device 11.

[0018]

According to the present invention, as described above, selection of whether to display operands by labels or addresses can be performed by inputting and storing label / address selection data in the label / address selection means. When inputting operands with labels, the label is also selected for display, and when inputting with addresses, the label is selected. This makes it possible to match the format of operands between input and display. Therefore, the user of the programming device can immediately confirm the correctness of the operand input by the user on the display device, so that the efficiency of the work of creating and modifying the program is improved. Furthermore, since it is easy to confirm correctness, the probability of incorrectly specifying the operand is reduced,
Not only is the work efficiency improved, but also the effect of improving the reliability of the program is obtained.

[Brief description of the drawings]

FIG. 1 is a functional block diagram of a programming device showing an embodiment of the present invention.

FIG. 2 is a block diagram showing a configuration of a conventional programming device.

FIG. 3 is a functional block diagram of the programming device of FIG. 2;

[Explanation of symbols]

1, 1A: programming device, 11: display device, 31
... Program storage unit, 32. Program editing unit (Pr.
Editing section), 33, 33A: program reading section (Pr. Reading section), 34: operand input section (Op. Input section), 3
5: Program display section (Pr. Display section), 36: Label / address allocation storage section (L / A allocation storage section), 37: Label / address allocation writing section (L / A allocation writing section), 38
… Label / address assignment input section (L / A assignment input section),
4 label / address selection means, 41 label / address selection storage unit (L / A selection storage unit), 42 label / address selection writing unit 42 (L / A selection writing unit), 43 label / address Selection input section (L / A selection input section)

Claims (2)

[Claims] In a programming device for creating, modifying, and displaying a program of a programmable controller, when displaying an operand used in the program on a display device, a label for selecting a format of a label or an address to be displayed. / Address selection means,
On the basis of the data stored in the label / address selection means, the data on the operand read from the program storage unit storing the program is converted into a selected format and displayed on a display device. Programmable controller programming device. A label / address selection input section for inputting data relating to label / address selection, a label / address selection storage section for storing the input data, and a label / address selection storage section for inputting the input data; 2. The programming device for a programmable controller according to claim 1, further comprising a label / address selection writing unit for writing in the label / address selection storage unit.