JPH04335401A - Device and method for generating automatically sfc language - Google Patents

Abstract

PURPOSE:To shorten the SFC program development time by executing an automatic analysis of time chart information and generating automatically SFC language. CONSTITUTION:A peripheral equipment 2 of a sequencer is constituted of a central processing unit (CPU) 8 for controlling each part of the equipment 2, respectively, a system program memory 9 for storing a program required for an arithmetic processing of the central processing unit 8, or a result of operation after the arithmetic processing, a work area memory 10 for storing various information inputted by an input device 12, an auxiliary storage device 11, an input device 12 such as a keyboard, etc., and a display device (CRT) 13 for displaying the information. In such a constitution, time chart exclusive paper information is displayed on the display device 13, and by using the displayed time chart exclusive paper information, editing information of a migration condition, an operation output and a time chart, etc., is inputted by the input device 12 such as a keyboard, etc. Subsequently, by executing an automatic analytic processing, based on this input information, SFC language is generated.

Description

[Detailed description of the invention]

0001

[Field of Industrial Application] The present invention relates to an automatic SFC language generation device for automatically generating an SFC language by inputting SFC language generation information to a time chart dedicated paper displayed on a display means such as a display device in a programmable controller. It concerns the method.

0002

[Prior Art] FIG. 8 is an explanatory diagram showing the creation work of a conventional SFC language. In the diagram, 1 is a time chart showing sequence control operations and a time chart describing input/output conditions (transition conditions and operation outputs). 2 is a peripheral device of the sequencer operated by SFC language editing software; 3 is written on the time chart sheet by a person intervening between the time chart sheet 1 and the sequencer peripheral device 2. Shows the work behavior of analyzing information.

Next, the operation will be explained. In FIG. 9, an operator writes input/output conditions and a time chart on a time chart dedicated paper 1 (S4). Next, Figure 10
, time chart dedicated paper 1 by the operator
analysis is performed. The main contents are the execution conditions of each line,
Calculate the execution output, start time and execution time from the time chart (S5), and calculate the context of each line from the time chart (S5).
It is determined which line is executed before the current line is executed, or which line is executed after the current line is finished, and the lines are rearranged (S6). Next, in FIG.
Based on the above analysis results, the SFC language editing software on the peripheral device 2 of the sequencer is used to manually edit the SFC language.
A language is created (S7).

0004

[Problem to be Solved by the Invention] Conventional SFC language program creation is performed using the steps described above.
Manual analysis of time chart paper and SFC
There is a problem in that a lot of time is required for editing work using editing software, which impedes speedy work. Furthermore, the operator must understand the SFC language, and as a result, there is a problem in that the number of operators who can generate the SFC language is limited.

[0005] This invention was made in order to solve the above-mentioned problems, and it is an automatic SFC language that automatically analyzes time chart information, automatically generates an SFC language, and shortens SFC program development time. The object of the present invention is to obtain a generating device and a method thereof.

[0006]

[Means for Solving the Problems] The SFC language automatic generation device according to the present invention includes a storage means for storing time chart dedicated paper information, and a display means for displaying the time chart dedicated paper information stored in the storage means. and the time chart dedicated paper information displayed on the display means,
An input means for inputting SFC language generation information, a storage means for storing the SFC language generation information input from the input means, and a control means for automatically generating the SFC language based on the SFC language generation information stored in the storage means. It is equipped with the following.

[0007] Furthermore, the SFC language automatic generation method according to the present invention cuts out one line of transition conditions and operation output, calculates the execution conditions and execution output of each line from the input/output conditions for each line, and generates a time chart. Execute one line, calculate the execution start time and execution time of each line from the time chart for each line, and couple the above two data to obtain the execution conditions, execution output, execution start time,
Execute description format conversion to SFC language based on execution time to generate SFC language for each step, and rearrange the SFC language for each step based on the context condition of each step obtained from the time chart. When executed, the SFC language is generated.

[0008]

[Operation] Display the time chart dedicated paper information on the display device, use the displayed time chart dedicated paper information to input information editing such as transition conditions, operation outputs, and time charts using input means such as a keyboard, By performing automatic analysis processing based on the input information, SFC
A language is generated.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing a schematic configuration of an SFC language automatic generation device, and shows the internal configuration of a peripheral device 2 of a sequencer. The peripheral device 2 of the sequencer includes a central processing unit (CPU) 8 that controls each part of the device;
A system program memory 9 that stores programs necessary for arithmetic processing or arithmetic results after arithmetic processing, a work area memory 10 that stores various information input through an input device 12, an auxiliary storage device 11, a keyboard, etc. An input device 12 and a display device (CRT) for displaying information.
) 13.

FIG. 2 is an explanatory diagram showing the definition of an automatically generated SFC language program, and 14 is an n step 1
Transition condition A for executing step 5, 16 is step 15
The operational output 17 at the time of execution is a transition condition B indicating under what conditions the output ends the execution of step n 15.

FIG. 3 shows time chart-specific paper information and input examples that are displayed on the display device 13 in the peripheral device 2 of the sequencer and can be edited using the input device 12 such as a keyboard. In the time chart-specific paper information, 18 is a transition condition, 19 is an operation output, and 20 is a time chart showing when and for how long each row's operation is performed. FIG. 3(a) shows the editing content of the main program, and FIG. 3(b) shows the program editing content of block 1 in the main program.

Next, the automatic SFC language generation process will be explained. FIG. 4 is an explanatory diagram showing the conversion procedure to the SFC language. In the figure, the transition condition 18 is
When inputting the operation output 19 (hereinafter referred to as input A),
The described input A, which spans several lines, is divided (cut out) line by line (S21). The input/output conditions for each line divided by one line cutting operation are defined as the input condition as the execution condition and the output condition as the execution output (S22).
.

Next, the time chart 2 is displayed on the time chart dedicated paper displayed on the display device 13.
If you input 0, the written time chart 20 becomes 1.
The image is divided (cut out) line by line (S23). The time chart 20 for each line is divided by the line-by-line extraction operation, and the execution start time and execution time are calculated from the written position and the written length (S24).

Thereafter, the execution conditions and execution output of each line in step 22 are coupled with the execution start time and execution time of each line calculated in step 24 for each row of data ( S25). As a result, a description format conversion operation to the SFC language is performed based on the execution conditions, execution output, execution start time, and execution time of each line coupled in the coupling operation (S26), and the description format conversion operation An SFC language corresponding to each converted step is generated.

[0015] Also, based on the time chart 20 and the time chart of each line that has passed through step 23 above, for each line, which line will be executed after execution and which line will be executed next, is searched, and the context is determined. Analyze the conditions (S27)
. The analyzed context condition data of each step and the SFC of each step generated through step 26 above
Each step is rearranged based on the language (S28), and the final target SFC language is generated.

FIG. 5 shows the process of converting the description format into the SFC language in step 26 shown in FIG. 4. In the figure, the execution conditions, execution start time, execution time, and execution output are shown in FIG. The transition condition 8, operation output 9, and time chart 20 of each row are divided, and first,
The transition condition A14 shown in FIG. 2 is defined by ANDing both the execution condition and the execution start time (S29). Next, the transition condition B17 shown in FIG. 2 is defined based on the execution time (
S31). Furthermore, the operation output 16 shown in FIG. 2 is defined by the execution output (S30). After that, transition condition A14,
1 step SFC from operation output 15 and transition condition B17
The language is combined (S32) to generate a one-step SFC language.

FIG. 6 shows the memory configuration for automatically generating the SFC language developed in the peripheral device 2 of the main (a) and block 1 (b) in the main sequencer. condition, 34 is the execution output, 35 is the execution start time, 36 is the execution time, 37 is the previous line, which indicates which line is being executed before the local execution starts, and 0
means start. Further, 38 is the next line, which indicates which line will be executed after the current line is executed, and END means the end of a series of operations.

FIG. 7 shows an SFC language program after automatic SFC language generation executed for main (a) and block 1(b) shown in FIG.

Next, the operation will be explained. When automatically generating the SFC language from the time chart dedicated paper shown in FIG. 3, one line is cut out in step 21, the input condition in step 22 is set as the execution condition, and the output condition is set as the execution output, as shown in FIG. 6. The numerical values of the execution conditions 33 and execution output 34 are set.

Next, one line is cut out in step 23 from the time chart 20 shown in FIG.
The execution start time is calculated from the description position in step 4, and the execution time is calculated from the written length. As a result, the numerical values of the execution start time 35 and the execution time 36 shown in FIG. 6 are set.

Next, in step 27, for each line, a context condition is created by searching which line will be executed after execution and which line will be executed next. the result,
The previous row 37 and next row 38 shown in FIG. 6 are each set.

Through the above operations, all of the information input on the time chart dedicated paper shown in FIG. 3 is stored as numerical values in the work area memory 10 of the peripheral device 2 of the sequencer as shown in FIG.

Next, in step 26, description format conversion into the SFC language is executed. That is, as shown in FIG. 5, in step 29, the execution condition 33 of each row is
A transition condition A14 is defined by ANDing the execution start time 35, and then, in step 30, the operation output 16 is defined by the execution output 34, and furthermore, in step 31, the transition condition B17 is defined by the execution time 36. . Thereafter, in step 32, the one-step SFC language is combined based on the transition condition A14, the operation output 15, and the transition condition B17, and the one-step SFC language is generated.

Next, in order to set the context of the SFC language for one step, in step 27, a context condition for each step is generated from the previous line 37 and next line 38 shown in FIG. Based on this, in step 28, each step is rearranged to complete the SFC language. By repeating the above operations, the SFC shown in FIG.
A language program will be generated.

[0025]

[Effect of the invention] As explained above, SF according to this invention
According to the C language automatic generation device and its method, time chart dedicated paper information is displayed on a display device, and the displayed time chart dedicated paper information is used to input transition conditions, operation outputs, and time using input means such as a keyboard. Since the SFC language is generated by inputting editing information such as a chart and performing automatic analysis processing based on the input information, the SFC language can be automatically generated and the SFC program development time can be shortened.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the configuration of an SFC language automatic generation device according to the present invention.

FIG. 2 is an explanatory diagram showing definition of an automatically generated SFC language.

FIG. 3 is an explanatory diagram showing time chart-specific paper information (main (a), block 1 (b)) displayed on a display device.

FIG. 4 is an explanatory diagram showing the automatic generation process of the SFC language.

FIG. 5 is an explanatory diagram showing the description format conversion operation to the SFC language shown in FIG. 4;

FIG. 6 is a memory configuration in the work area memory 10 formed by information input from an input device (main (a)
, block 1(b)).

FIG. 7 is an explanatory diagram (main (a), block 1 (b)) showing a program created as a result of executing SFC language automatic generation processing based on the information shown in FIG. 6;

FIG. 8 is a block diagram showing the configuration of hardware that generates a conventional SFC language.

FIG. 9 is a flowchart showing a conventional SFC language generation operation.

FIG. 10 is a flowchart showing a conventional SFC language generation operation.

FIG. 11 is a flowchart showing a conventional SFC language generation operation.

[Explanation of symbols]

2. Sequencer peripheral equipment 8 Central processing unit 9 System program memory 10 Work area memory 11 Auxiliary storage device 12 Input device 13 Display device

Claims (2)

[Claims] 1. A storage means for storing time chart exclusive paper information, a display means for displaying the time chart exclusive paper information stored in the storage means, and a display means for displaying the time chart exclusive paper information displayed on the display means. On the other hand, S
An input means for inputting FC language generation information, a storage means for storing the SFC language generation information input from the input means, and a control means for automatically generating the SFC language based on the SFC language generation information stored in the storage means. An SFC language automatic generation device characterized by comprising: [Claim 2] Cut out one line of transition conditions and operation output, calculate the execution conditions and execution output of each line from the input/output conditions of each line, and cut out one line of the time chart to calculate the time of each line. Calculate the execution start time and execution time of each line from the chart, and convert the description format to SFC language based on the execution conditions, execution output, execution start time, and execution time of each line obtained by coupling the two data. to generate an SFC language for each step, and generate the SFC language by rearranging the SFC language for each step based on the context condition of each step obtained from the time chart. A method for automatically generating SFC language.