JP2003084813A - Editing device for ladder circuit and its editing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently search a desired circuit and to quickly display only the circuit necessary for the development of a ladder circuit to easily recognize the same. SOLUTION: The ladder circuit 100 satisfying a searching condition 110 is searched, the search result information 130 indicating whether the circuit is the ladder circuit satisfying the condition or not is produced, the ladder circuit 100 is converted into a constituent element 120, the search result information 130 is held while linked with the constituent element 120, the constituent element 120 linked with the search result information 130 is converted into each ladder circuit 100, and the converted ladder circuits 100 are respectively divided into the ladder circuit 100 satisfying the searching condition 110 of the search result information 130 and the ladder circuit 100 not satisfying the condition.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ladder circuit editing apparatus applicable to a ladder circuit programming apparatus in a programmable controller (PLC), and an editing method thereof.

[0002]

2. Description of the Related Art Conventionally, a developer of a ladder circuit scrolls a screen on which the ladder circuit is displayed or searches for an instruction or an address in order to display a circuit including a specific instruction or address of a ladder program. The function was used to jump to the relevant location and display it.

[0003]

In the conventional search method described above, there are many circuits in which the circuit to be displayed is far away from the current display position, or many circuits include the address to be searched. In such a case, many key operations are required to display the target circuit, resulting in poor work efficiency.

In addition, on the screen, not only the necessary circuits but also the unnecessary circuits are displayed in the same expression system, which makes it difficult to recognize the necessary circuits.

Therefore, an object of the present invention is to perform a desired circuit search efficiently and to quickly display and easily recognize only a circuit necessary for developing a ladder circuit, and an editing apparatus for a ladder circuit. , And to provide an editing method thereof.

[0006]

The present invention is an apparatus for extracting and displaying a desired ladder circuit, and a plurality of ladder circuits, and an input means for inputting search conditions for each of the ladder circuits, and Retrieval means for retrieving a ladder circuit that matches the input search condition and generating search result information that indicates whether or not the ladder circuit matches the search condition, and first converting the ladder circuit into a constituent element. Converting means, holding means for holding the search result information generated by the search in association with the converted component, and component elements held in association with the search result information for each ladder circuit. Display means for displaying the converted ladder circuits by distinguishing the converted ladder circuits into ladder circuits that match the search conditions of the search result information and ladder circuits that do not match the search conditions. By comprising a constitute editing apparatus of the ladder circuit.

The present invention is a method for extracting and displaying a desired ladder circuit, which comprises inputting a plurality of ladder circuits and search conditions for each ladder circuit, and matching the input search conditions. Searching for a ladder circuit to be generated, generating search result information indicating whether or not the ladder circuit matches the search condition, converting the ladder circuit into a constituent element, and the search generated by the search. A step of holding result information in association with the converted constituent element; a step of converting the constituent element held in association with the search result information into each ladder circuit; and each of the converted ladder circuits. And a step of displaying the ladder circuits that match the search condition of the search result information and the ladder circuits that do not match the search conditions, thereby providing a method for editing the ladder circuit. .

The present invention is a program for extracting and controlling display of a desired ladder circuit, the program being recorded in a computer-readable recording medium, a plurality of ladder circuits, and A step of inputting a search condition for each ladder circuit, a step of searching a ladder circuit that matches the input search condition, and generating search result information indicating whether or not the ladder circuit matches the search condition. A step of converting the ladder circuit into a component, a step of holding the search result information generated by the search in association with the converted component, and a step of holding the search result information in association with the search result information. A step of converting the constituent element into each ladder circuit, and matching each of the converted ladder circuits with a ladder circuit that matches the search condition of the search result information. By comprising the step of displaying in distinction with no ladder circuit, it provides an editing control program of the ladder circuit.

The present invention is a medium in which a program for extracting a desired ladder circuit and controlling display is recorded.
The control program causes a computer to input a plurality of ladder circuits and search conditions for each of the ladder circuits, searches for a ladder circuit that matches the input search conditions, and uses the ladder circuits that match the search conditions. Generating search result information indicating whether or not there is, converting the ladder circuit into a constituent element, and holding the search result information generated by the search in association with the converted constituent element,
The ladder circuit that does not match the ladder circuit that matches the search condition of the search result information is converted into each ladder circuit, and the converted ladder circuit that is associated with the search result information and held A medium on which an edit control program for the ladder circuit is recorded is provided by displaying the edit control program separately.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below with reference to the drawings.

(Outline) First, an outline of the present invention will be described. The present invention has various ladder circuits and means for inputting search conditions such as an instruction type and an address, and according to the search conditions, a ladder circuit that matches the search conditions and a ladder circuit that does not match the entire program. Is provided, and search result information (information indicating that the circuit is a matched circuit or a circuit that is not matched) is associated with the search result information (a circuit that matches and a circuit that does not match) and held.

Further, according to the present invention, when displaying a ladder circuit, a means for switching the display method is provided for each ladder circuit, and the stored search result information is combined with the ladder circuit that matches the search condition. The feature is that the display method is distinguished from the ladder circuit which is not displayed.

(Specific Example) Next, a specific example will be described. Hereinafter, in this example, an apparatus for programming a ladder circuit of a programmable controller (hereinafter referred to as PLC) will be described as an example.

(System Configuration) FIG. 1 shows a schematic configuration of an editing device for extracting and displaying a ladder circuit. This device is roughly divided into an input unit 1, a search unit 2, a conversion unit 3, a holding unit 4, and a display unit 5.

The input unit 1 inputs various ladder circuits 100 (here, circuit 1, circuit 2 and circuit 3) and a search keyword 110 as a search condition (that is, a specific instruction or address of a ladder program). It has a function to do.

The search unit 2 receives the input search keyword 1
It has a function of searching the ladder circuit 100 that matches 10 and generating search result information 130 that indicates whether or not the ladder circuit 100 matches the search keyword 110.

The conversion unit 3 performs a conversion process from each ladder circuit 100 into a constituent element 120 (that is, an instruction, an operand, etc.) and a conversion processing from the constituent element 120 held in the holding unit 4 into each ladder circuit 100. It has a function.

In the holding unit 4, the ladder circuit 100 is used by the conversion unit 3.
The component 120 converted by the above is compared and collated with the search result information 130 indicating whether or not the ladder circuit matches the search keyword 110, and these component 120
And the search result information 130 are associated and held for each circuit.

The display unit 5 includes a ladder circuit 10 in which the component 120 held in the holding unit 4 is converted by the conversion unit 3.
0 is displayed separately for the ladder circuit 100 that matches the search condition of the search result information 130 and the ladder circuit 100 that does not match the search condition. For example, the ladder circuit 100 that matches the target search condition is displayed by a solid line, and the ladder circuit 100 that does not match is displayed by a broken line.

(System Operation) Next, the operation of this system will be described. FIG. 2 is a flowchart illustrating a process of performing extraction display. Hereinafter, the steps S1 to S6 will be sequentially described.

(Step S1: Ladder Circuit / Search Condition Input Processing) In step S1, various ladder circuits 100 required for circuit design are input. Then, a search keyword 110 (search condition) necessary to search for a target circuit
Enter.

FIG. 3 shows an example of the ladder circuit 100. The ladder circuit 100 is configured as a network in which left and right buses 101 and constituent elements 120 such as instructions are connected by a line. The instruction includes an operand (PLC address or constant).

The ladder circuit 100 includes a busbar 10 on the left and right.
It is considered to be a group of circuits which are not connected to each other except 1. For example, the ladder circuit 100 includes a circuit 1, a circuit 2, and a circuit 3. Each circuit is composed of an instruction and an operand as a constituent element 120.

On the other hand, the developer of the ladder circuit 100 uses a specific command or address as the search keyword 110,
In many cases, a circuit is searched and displayed, and the displayed circuit is debugged. Therefore, by comparing the instruction or address for each circuit with the instruction or address used by the creator of the ladder circuit 100 as the search keyword 110. , It becomes possible to extract the circuit to be displayed.

(Step S2: Search Processing) Step S2
Then, the search result information 1 that indicates whether or not the ladder circuit 100 that matches the input search keyword 110 is searched and indicates whether the ladder circuit 100 matches the search keyword 110
Generate 30.

Here, an example of the search processing will be described.

When "Y10" is input as the search keyword 110 in the input unit 1 shown in FIG. 1 and the extraction process is executed in the search unit 2, the constituent element 120 of the ladder circuit 100 is searched for each circuit. This search reveals that the circuit 2 satisfies the search condition. Therefore, the extraction result of the circuit 2 is set to “include” and the other circuits are set to “not include”.

As a search condition, "TO AND
You may make it possible to perform a more complicated condition input by using a logical expression such as AND and OR to perform the search processing.

(Step S3: Conversion processing into constituent elements)
In step S3, the ladder circuit 100 is connected to the constituent element 120.
Convert to.

FIG. 4 shows the components 12 of the ladder circuit 100.
Indicates 0. For each circuit, there is a component 120 consisting of instructions and operands.

(Step S4: Hold Processing) Step S4
Then, the ladder circuit 10 that matches the search keyword 110
The search result information 130 indicating whether it is 0 is held in association with the converted component 120.

FIG. 5 shows an example of the holding unit 4 which stores the result of searching the component 120 and extracting it.

When the address Y10 is used as the search keyword 110 and the component 120 is searched, only the circuit 2 including the address Y10 is extracted. Therefore, the extraction result information 130 of the circuit 2 by this search is “included”.
become. On the other hand, since the circuit 1 and the circuit 3 do not include the address Y10, the extraction result information 130 is “not included”.

(Step S5: Conversion Process to Ladder Circuit) In step S5, the constituent element 120 held in association with the search result information 130 is stored in each ladder circuit 10.
Convert to 0.

(Step S6: Display Processing) Step S6
Then, the converted ladder circuits 100 are matched with the search keyword 110 of the search result information 130.
00 and the ladder circuit 100 that does not match are displayed separately.

Here, an example of distinguishing and displaying will be described.

In the display process of the ladder circuit 100, based on the extraction result information 130 shown in FIG. 5, only the extracted circuits are displayed without displaying the unextracted circuits, or the extracted circuits are extracted. By displaying both the circuits and the circuits that have not been extracted, but by displaying the circuits differently, it is possible for the developer of the ladder circuit 100 to easily find only the circuits that are needed.

FIG. 6 shows a circuit display example when the address Y10 is searched as the search keyword 110.

By displaying the unextracted circuits 1 and 3 by dotted lines and by showing the extracted circuits 2 by solid lines, only the desired extracted circuit 2 can be easily recognized. . In addition to the distinction between the solid line and the broken line, display means such as color, blinking display, arrow notation, characters and symbols may be applied.

As described above, in the programming device for the ladder circuit of the programmable controller, the instructions constituting the program and the address which is the operand of the instruction are used as search conditions, and only the ladder circuits satisfying the search conditions are extracted and displayed. Alternatively, the display method is differentiated according to the condition content, so that the circuit search can be efficiently performed, and only the circuits necessary for the ladder circuit development can be quickly displayed and easily recognized. Become.

[0041]

As described above, according to the present invention,
By searching for a ladder circuit that matches the input search conditions, search result information indicating whether or not the ladder circuit matches is generated, and the ladder circuit is converted into a constituent element.
The search result information generated by the search is held in association with the converted constituent elements, the constituent elements held in association with the search result information are converted to each ladder circuit, and each converted ladder circuit is searched. Since the ladder circuits that match the information search conditions and the ladder circuits that do not match are displayed separately, you can display only the necessary ladder circuits by specifying the search conditions for circuit display. As a result, it is possible to improve operability and improve work efficiency without requiring a search operation for an instruction or an address many times as in the conventional case.

Further, according to the present invention, the method of displaying the circuits that match the search conditions and the circuits that do not match is different, and only the searched and extracted circuits can be displayed. The required circuit can be easily recognized.

[Brief description of drawings]

FIG. 1 is a block diagram showing an editing device for a ladder circuit according to an embodiment of the present invention.

FIG. 2 is a flowchart showing an extraction display process according to the present invention.

FIG. 3 is a block diagram showing an example of a ladder circuit.

FIG. 4 is a block diagram showing components of a ladder circuit.

FIG. 5 is a block diagram showing a configuration for holding a component and extraction result information.

FIG. 6 is a block diagram showing an example of a circuit display.

[Explanation of symbols]

1 Input section 2 Search section 3 converter 4 holding part 5 Display 100 ladder circuit 110 Search condition (search keyword) 120 components 130 Search result information

Claims (4)

[Claims] 1. A device for extracting and displaying a desired ladder circuit, comprising a plurality of ladder circuits, input means for inputting search conditions for each ladder circuit, and matching the input search conditions. Search means for searching the ladder circuit and generating search result information indicating whether or not the ladder circuit matches the search condition; first converting means for converting the ladder circuit into a constituent element; Holding means for holding the generated search result information in association with the converted constituent element, and second converting means for converting the constituent element held in association with the search result information into each ladder circuit. And a display unit for displaying the converted ladder circuits by distinguishing them between ladder circuits that match the search condition of the search result information and ladder circuits that do not match the search conditions. Ladder circuit editing device. 2. A method of extracting and displaying a desired ladder circuit, comprising a step of inputting a plurality of ladder circuits and search conditions of the respective ladder circuits, and a ladder matching the input search conditions. A step of searching the circuit and generating search result information indicating whether or not the ladder circuit matches the search condition; a step of converting the ladder circuit into a component; and a search result information generated by the search A step of holding the converted component in association with the converted component, a step of converting the component held in association with the search result information into each ladder circuit, and each converted ladder circuit, A method of editing a ladder circuit, further comprising a step of displaying a ladder circuit that matches a search condition of the search result information and a ladder circuit that does not match the search condition separately. 3. A program for extracting and controlling display of a desired ladder circuit, the program being recorded on a computer-readable recording medium, the plurality of ladder circuits and each of the ladder circuits. Inputting a search condition for a circuit, searching for a ladder circuit that matches the input search condition, and generating search result information indicating whether or not the ladder circuit matches the search condition, Converting a ladder circuit into a constituent element; retaining search result information generated by the search in association with the converted constituent element; and retaining a constituent element associated with the search result information. Is converted into each ladder circuit, and each converted ladder circuit does not match the ladder circuit that matches the search condition of the search result information. An edit control program for a ladder circuit, which comprises a step of displaying the ladder circuit separately. 4. A medium in which a program for extracting and controlling display of a desired ladder circuit is recorded, wherein the control program inputs a plurality of ladder circuits and search conditions for each ladder circuit to a computer. Then, by searching the ladder circuit that matches the input search condition, to generate search result information indicating whether or not the ladder circuit that matches the search condition, converting the ladder circuit to a constituent element, The search result information generated by the search is held in association with the converted component, the component held in association with the search result information is converted into each ladder circuit, and the conversion is performed. A ladder characterized in that each ladder circuit is displayed separately as a ladder circuit that matches the search condition of the search result information and a ladder circuit that does not match the search condition. Medium recording circuit editing control program.