JP3171363B2 - Programming device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a programming apparatus for simplifying a programming step (program input step) performed after designing an application program for a programmable controller (hereinafter abbreviated as PLC).

[0002]

2. Description of the Related Art Conventionally, in order to easily program a PLC, a PLC programming language (ladder, instruction list,
Instead of programming by FBC or the like, programming using SFC elements is performed. The SFC is a graphic element. The user understands the processing contents of various graphic elements (SFC elements), arranges the SFC elements on an editor, and connects them with graphic symbols (lines) to define a program. You. Programming is performed by compiling an array of defined SFC elements and graphic symbol data.

[0003]

In a conventional programming method using SFC elements, it is necessary for a user to describe all elements of an SFC program using graphics. Therefore, there is a problem that the amount of work is large, time is required, and there is a high possibility that an input error occurs.

Accordingly, an object of the present invention is to provide a programming device capable of easily creating a program without using an SFC element.

[0005]

In order to achieve such an object, the invention according to claim 1 is a method for converting tabular data.
Enter the executable program of the programmable controller
In a programming device for converting to a gram,
Each element of the data in the format
The table data array is replaced with the S
Exhibition to expand on the flow of processing in FC programs
Storage means for storing the open data; and
Deployment mesh of the same size as the size of the described table
And based on the expanded data, the tabular data
Expansion processing means for expanding data into the SFC program
And the SFC program expanded by the expansion processing means
Into an executable program for a programmable controller
Compiling means for compiling, the table form
The data of the formula is obtained when the programmable controller
Record that describes the external processing to be performed on the
And the programmable controller performs the external processing.
There is a transition record that describes the conditions to be executed.
The expansion data is stored in the step record.
The element in which a number is described is replaced with the S specified by the number.
The first to replace with step element of FC program
Data and the numbers in the transition record
The element described with the above, the SFC specified by the number
No. to replace with transition elements of the program
2 and the step record or the transaction
Must have a down arrow on the state record
Element to the link element of the SFC program
Third data for the step record or previous
Required that the numbers in the transition record
If the element immediately above the element is blank, the element immediately above the element
The element with the number on the left of
The numbered elements are selected by the SFC program.
Fourth data to be replaced with a fork element;
Record or the transition record
The element immediately below the element with the number or down arrow
Is blank, the number to the left of the element immediately below
The element where the letter is written is the merging destination, and the number or downward
The element with the arrow in it is combined with the SFC program.
Fifth data to be replaced with flow elements and the step
Before the elements jump instruction is described in the precoded
Replace with the jump element of the SFC program, and
The jump destination element described in the jump instruction is
Place in the step element with the connection element of the SFC program
And the sixth processing means for changing
Replaces all elements of the deployment mesh with blank elements
It is characterized by having initialization means for initializing .

According to a second aspect of the present invention, a programmable
Converting the controller's executable program into tabular data
In a programming device for performing inverse conversion, the program
The executable form program of the mable controller is
Compile to decompile to SFC program of the form
File processing means and each element of the SFC program in the table.
Replace with each element of the format data, and
Reverse the flow of processing in the system to the array of tabular data
Storage means for storing de-expanded data for decompression;
SFC program The same size as the figure format
Create a mesh for inverse expansion of
And decompiled by the decompile processing means.
Decompress the SFC program into the tabular data
Reverse-expansion processing means, wherein the tabular data is
The programmable controller executes externally
A step record describing the external processing and the program
The conditions for the external controller to execute the external processing are described.
And a transition record to be loaded.
Data, the step elements of the SFC program
Extracted from the step element in the step record
The first data for replacing the entered numbers with the listed elements.
Data and transition elements of the SFC program
Is the transition in the transition record.
Place the number extracted from the
Second data to be exchanged and the SFC program
Link element to the step record or the transition
Element with a down arrow in the action record
Third data to be replaced with the SFC program
The jump element of the ram is
A fourth instruction for replacing the jump instruction with the described element
And the expansion processing means includes the reverse expansion method.
Initialization method that initializes all elements of the hash to blank elements
It is characterized by having a step .

[0007]

[0008]

[0009]

[0010]

According to the present invention, table-format data is input and displayed, and is converted into an executable program that can be executed by the programmable controller. Can be programmed. Therefore, do not understand the SFC program in detail
Even if the user understands the description rules for the matrix table,
You can easily create SFC programs simply by entering characters in the table.
Can be achieved.

[0011] According to the present invention, display the PLC executable program by inversely converting the tabular data, PLC program already created as a tabular data
Since it is shown , the program can be easily changed. Also, the program in the PLC execution format is converted to
Since it is decompiled into an FC program and then decompressed into tabular data, it is easy to change the PLC program.

[0012]

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

FIG. 1 is a functional block diagram showing a functional configuration of the program creating apparatus of the present invention. In FIG. 1, 1 is
The same size as the size of the table containing the tabular data
Is a matrix table, which is a mesh for development, and is displayed on the screen of the program creation device of the present invention. Reference numeral 2 denotes a matrix description rule, which has a rule indicating the meaning of each element and the arrangement of the elements described in the matrix table 1. 3 expands
This is an expansion rule in which data is described, and has a rule for expanding the matrix described in the matrix table 1 to the SFC. Reference numeral 4 denotes a reverse expansion rule in which reverse expansion data is described , and has a rule for reverse expansion of the SFC program 7 into the matrix table 1. Reference numeral 5 denotes an expansion processing unit, which expands the matrix described in the matrix table 1 into the SFC program 7 based on the matrix description rule 2 and the expansion rule 3. Reference numeral 6 denotes a reverse expansion processing unit, which is an SFC program 7
To the matrix described in Matrix Table 1.

Reference numeral 7 denotes an SFC program which is stored in a memory and displayed on a display screen. Reference numeral 8 denotes a compile processing unit which compiles the SFC program into a PCL executable program. Reference numeral 9 denotes a decompile processing unit which decompiles the PCL executable program into the SFC program 7. The matrix description rule 2, the expansion rule 3, and the inverse expansion rule 4 are stored in a hard disk or the like of the program creating device.

After the user writes the elements of the matrix into the matrix table 1, the expansion processing unit 5 expands the matrix into the SFC program 7 based on the matrix description rule 2 and the expansion rule 3. Next, the compile processing unit 8
The C program is compiled to create the PLC executable program 10. The decompile processing unit 9 decompiles the PCL executable format program 10 into the SFC program 7. The inverse expansion processing unit 6 uses the inverse expansion rule 4 to
The SFC program 7 is converted into a matrix described in the matrix table 1. The transformed matrix is displayed to the user.

FIG. 2 shows a description example of the matrix table 1. In the figure, a step record 11 is a record for managing processing in each step by number. A step record 11 is always arranged in the first row of the matrix table. A transition record 12 describes conditions for executing the next step. The transition records 12 are arranged alternately with the step records 11.

One item in each column in the step record 11 is called a step cell 13. In the step cell 13, a number, a combination of a letter J and a number, or a downward arrow can be written. One item in each column in the transition record 12 is called a transition cell. A number or a downward arrow can be written in the transition cell 14.

The rules for describing each element in the matrix table, that is, the rules for describing the matrix, will be described with reference to FIGS. In these figures, the flow of the program processing is conceptually shown on the left side. The right side shows a matrix table corresponding to the program processing on the left side.

(1) When a number is successively input in the same column, processing corresponding to the number described in each step record is executed serially in accordance with the transition condition corresponding to the number described in each transition record. Is done. Such processing is called serial control.

(2) The downward arrow indicates that the process that has been transitioned to that cell is to be transitioned to the process described immediately below. If nothing is described in the cell above the cell with the downward arrow, the expansion processing unit 5 outputs an error when the data is expanded into the SFC program.

(3) A blank cell means that serial control in that column has been cut off. (4) When a number is described in an arbitrary step cell, a cell immediately above is blank, and a number is described in a left cell in the same record, a plurality of controls are started in parallel. Means

(5) When a number is described in a transition cell, the cell immediately above is blank, and a number is described in a left cell in the same transition record, various conditions described in the transition record are used. The process written thereafter is selectively executed. That is, the selection sequence is started.

(6) If a number or a downward arrow is described in the step cell, the cell immediately below is blank, and a number or a downward arrow is described in the left cell on the same record, This indicates that one of the plurality of controls being executed ends in the cell.

(7) When a number or a downward arrow is described in the transition cell, the cell immediately below is blank, and a number or a downward arrow is described in the left cell on the same record, One ends with the transition cell.

(8) When Jn (n is a natural number) is described in the cell, it means jumping to n.

Referring to FIG. 6, a method of expanding the data described in matrix table 1 into an SFC program will be described.

(1) Prepare the same coordinate mesh as matrix table 1. All elements of the coordinate mesh are initialized with blank elements.

(2) A step cell in which a number is described is
The number is replaced with the SFC step element having the step number.

(3) Replace the transition cell in which the number is described with a transition element of the SFC having that number as the transition number.

(4) Replace the downward arrow with an SFC link element.

(5) If a number is written in the step cell or the transition cell, the cell immediately above is blank, and a number is written in the left cell on the same record, the cell above the left cell Is replaced with a selected branch element having a branch source. If the cell immediately above the left cell is also blank, it is replaced with a selective branch element whose source is the cell immediately above the left cell.

(6) If a number or a downward arrow is described in the step cell or the transition cell, the cell immediately below is blank, and if a number or a downward arrow exists in the left cell of the same record, the left or right arrow is displayed. Replace with a merging element that merges with the cell immediately below the cell. If the cell immediately below the left cell is also blank, it is replaced with a merging element that merges with the cell immediately below the left cell.

(7) The cell data described as Jn (n is a natural number) is replaced with a jump element whose jump destination step is n. The cell with the number n is a step element with a connection element.

(8) Elements of coordinates corresponding to blank cells are:
Do not operate.

(9) On the development mesh, the branching, merging, and connecting elements do not independently occupy one coordinate.

The programming device of the present invention creates an SFC program based on the data described in the matrix table by the above steps.

Referring to FIG. 7, a method of reversely developing an SFC program into matrix data will be described.

1. As shown in the upper part of FIG. 7, a table is described on the drawing of the SFC program. At this time, the branch and the merge are included in the transition element side and are handled as one coordinate. Also, a matrix table having the same size as the table superimposed on the SFC program is prepared. All the meshes of the matrix are initialized in advance with blank elements.

2. Extract only the numbers (numbers) contained in each element of the table and develop the numbers in the cells on the matrix table corresponding to each element.

3. J is added to the head of the number described in the expanded cell corresponding to the jump element.

4. The cell corresponding to the connecting element is indicated by a downward arrow.

5. The cell corresponding to the blank coordinates is not operated.

The programming device of the present invention creates an SFC program in a PLC execution format by the above steps.

The programming device of the present invention inputs and displays tabular data, develops it into a diagram-form SFC program based on the above-mentioned development rules, and then compiles the SFC program into a PLC execution format program.
Further, the program in the PLC execution format is decompiled into an SFC program in a diagram format, and the SFC program is decompressed into tabular data based on the above-described rule of decompression. S
Method of compiling FC program into PLC executable program, and converting PLC executable program to S
Since the method of decompiling into an FC program is well known, its description is omitted.

[0045]

As described above, according to the present invention,
An SFC program can be created only by inputting data to the matrix table. In particular, even if the user does not understand the SFC program in detail, if he / she understands the rules of description in the matrix table, it is easy to write the characters in the table and simply enter
FC programs can be created. Therefore, the load of the conventional driving operation using the graphic editor can be greatly reduced. Further, by simplifying the input data, the burden on the programmer for education can be reduced. Furthermore, it is possible to eliminate human errors such as input errors that occur during the programming operation, and to greatly increase the efficiency of the PLC application development operation.

[Brief description of the drawings]

FIG. 1 is a functional block diagram showing a functional configuration of a program creation device of the present invention.

FIG. 2 is an exemplary diagram of a matrix table 1.

FIG. 3 is an explanatory diagram for explaining a matrix description rule.

FIG. 4 is an explanatory diagram for explaining a matrix description rule.

FIG. 5 is an explanatory diagram for explaining a matrix description rule.

FIG. 6 is an explanatory diagram of a method of expanding data described in a matrix table 1 into an SFC program.

FIG. 7 is an explanatory diagram of a method of reversely developing an SFC program into matrix data.

[Explanation of symbols]

 Reference Signs List 1 matrix table 2 matrix description rule 3 expansion rule 4 inverse expansion rule 5 expansion processing unit 6 reverse expansion processing unit 7 SFC program 8 compile processing unit 9 decompile processing unit 10 PLC execution format program 11 step record 12 transition record 13 step cell 14 Transition cell

Claims (2)

(57) [Claims] 1. A programmer that inputs data in a table format and
Program to convert to the executable program of the
In the gramming device, each element of the tabular data is converted into a diagram- format SFC program.
Replace the data array in the tabular format with
Developed into the processing flow in the SFC program
Storage means for storing expanded data for storing data in the form of a table having the same size as the table in which the data in the table format is described.
Create a mesh for deployment of the size and based on the deployment data
And spreads the tabular data in the SFC program.
Expansion processing means to be opened and the SFC program expanded by the expansion processing means
The executable program of the programmable controller
Compilation processing means for compiling the program into a program, wherein the tabular data is stored in the programmable controller.
Steps to describe external processing that is executed by external
Record and the programmable controller
Transition record that describes the conditions for executing the copy process
And the expansion data is a numeral in the step record.
The element described with the above, the SFC specified by the number
First data to replace with step elements of the program
Data and the numbers in the transition record
The listed elements are replaced by the SFC profile identified by that number.
The second to replace the transition element in grams
Data and the step record or the transition
Element with a down arrow in the action record
Is replaced with the link element of the SFC program.
Third data for the step record or the
Elements with numbers in transition records
If the element immediately above is blank,
The element with the number on the left side is the branch source, and the number
Select branch of the SFC program with elements in which characters are described
Fourth data to be replaced with an element;
Record or number in the transition record
The element immediately below the element with the letter or down arrow is
If blank, the number to the left of the element immediately below
With the element marked with, the number or downward
Merge the elements marked with arrows with the SFC program
A fifth data for changing place it elements, said step
The element with the jump instruction in the record is
Replace with jump element of SFC program and before
The jump destination element described in the jump instruction
Replace with step element with connection element of FC program
And the expansion processing means includes: all elements of the expansion mesh.
Has an initializing means for initializing
Programming device to be featured. 2. An executable form of a programmable controller.
Program that converts programs back to tabular data
A program for executing the executable form of the programmable controller.
Decompiles the program into a graphical SFC program
Decompilation processing means for converting each element of the SFC program into
Replace with each element and process in the SFC program
To reverse-expand the flow of data into an array of tabular data
Storage means for storing the decompressed data, the SFC program having the same size as the figure format
Create a mesh for reverse expansion, based on the reverse expansion data
And decompiled by the decompile processing means.
Reversely expands the SFC program into tabular data
Reverse-expansion processing means, wherein the tabular data is stored in the programmable controller.
Steps to describe external processing that is executed by external
Record and the programmable controller
Transition record that describes the conditions for executing the copy process
And the reverse expansion data is a step of the SFC program.
The element in the step record in the step record.
Replace the number extracted from the element with the described element
First data and the transition of the SFC program
Transition element before the transition record
The number extracted from the transition element is described
Second data to be replaced with an element and the SFC
The link element of the program to the step record or previous
Down arrow in the transition record
Third data to be replaced with the replaced element,
The jump element of the FC program is stored in the step record
Jump instruction in has been replaced by a serial mounting the elements
And the expansion processing means includes all the elements of the reverse expansion mesh.
It is necessary to have initialization means to initialize elements to blank elements.
Characteristic programming device.