JPH0245803A - Automatic preparing method for sequence program - Google Patents

Abstract

PURPOSE:To automatically prepare a sequence program and to save labor for the design and input of the sequence program by inputting input data such as the name of an input and output signal, etc., in a interaction form. CONSTITUTION:A data setting table is displayed on a CRTIA and the necessary signal name or data are inputted from a keyboard 1B according to the instruction of a message in the interaction form. The inputted data are automatically converted to the program language of a PC4 by the program. The converted sequence program is transmitted to the memory of the PC4, a user FD2 or a printer 5, etc. After writing is finished to the PC4, monitor or debug can be executed by an input device 1 with CRT as the ladder circuit of the PC4.

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a method for automatically creating a sequence program with a predetermined logic for detecting and diagnosing failures in mechanical equipment using a programmable controller (hereinafter referred to as PC). .

[Conventional technology 1 Conventionally, PCs have been used to control machinery and equipment, and to detect failures and
+11 failure detection/
Monitoring has been carried out by designing a sequence program for diagnosis and using this sequence program, or (2) by using a personal computer or the like with a data processing function. In method (1), it takes a long time to design the sequence program for fault detection and diagnosis, and if there are many typical circuits that differ only in input/output signals, it is necessary to input these circuits repeatedly. Ta.

In other words, since PC sequence programs usually differ depending on the ideology and personality of the designer who created them, when multiple mechanical equipment is installed, the processing and display method of detection and diagnosis results for each mechanical equipment may be different. If they are different, it is necessary to create and input programs with the same pattern one by one.

In addition, (2) a monitor using a personal computer, etc.
The monitoring method required the development of a program, which required a dedicated operator.

[Problems to be Solved by the Invention] According to the conventional method of automatically creating a sequence program for a PC, if the processing and display method of failure detection/diagnosis results differs for each mechanical equipment to be controlled, it is difficult to use the same pattern. The program has to be created and input one by one, and there are problems in that it takes a relatively long time to create the program, and the input work for the program is complicated.

This invention was made to solve the above-mentioned problems, and by inputting the signal name, etc. of the location where failure detection/diagnosis is to be performed, the cause, etc. into the data setting table displayed on the screen, It is an object of the present invention to provide a method for automatically creating a sequence program that can automatically create a sequence program whose logic is determined in advance and write it to a PC.

[Means for Solving the Problems 1] A method for automatically creating a sequence program according to the present invention is a program creation device having an input means and a display screen for creating a relay ladder sequence program used in a programmable controller that sequentially controls a controlled object. When creating the sequence program in which the logic of the relay ladder circuit is determined in advance, a means for displaying a data setting table on the display screen of the program creation device, and means to be set in the variable setting area of the data setting table. means for inputting input data from the input means of the program creation device; means for automatically creating the sequence program based on the set input data; and means for transmitting the sequence program to the memory of the programmable controller. It consists of a means for storing information.

[Operation 1] In the present invention, the program creation device displays a variable setting area of a data setting table on its display screen, and enters input data necessary for creating the shear rail ladder sequence program to be entered in the variable setting area. When input from the input means of the creation device, the sequence program is automatically created based on the input data, and the created sequence program is transferred to and stored in the memory of the programmable controller.

[Embodiment of the Invention] An embodiment of the present invention will be described below with reference to FIGS. 1 to 4.

FIG. 1 is a diagram showing a sequence program creation system using the automatic sequence program creation method according to the present invention.

In the figure (11 is CR as a program creation device)
Input device with T! It is called a PC peripheral device.

(2) is a floppy disk sheet (hereinafter referred to as FD), which is a software package for creating fault detection and diagnosis programs.
+31 is the floppy disk drive (hereinafter referred to as FDD) into which the above-mentioned FD (21) is inserted and the packaged software is loaded, which is installed in the input device with CRT. +41 is the control unit (4A), input/output crab unit. (4B), etc. PC 1 (5) is a printer capable of printing in a predetermined format, (6) C is the above CRT attendant device (1) and P] 41. Printer (5), etc. It is a signal cable with an R3232C connector to connect, and each of the above devices + 11
, f4), +51, etc. are respectively the above R5232
Equipped with a C interface. (8) is P C (4
This mechanical equipment (8) and the above-mentioned PC+41 are connected by a control signal line (7).

Next, regarding the operation of the sequence program creation system using the automatic sequence program creation method of the present invention shown in FIG. Enter the input data to be set, such as the name, from the keyboard (IB) as an input means of the input device with CRT (1), and press PC+4.
1 will be explained about the operation up to recording in the empty area of the program memory (not shown).
The relationship shown in the figure and the rail ladder circuit diagram will be explained.

FIG. 3 is an example of a data setting table (10) displayed on the input screen (IA) of the input device with CRT (1).

Input data input from the keyboard (IB) is written into the variable setting area (fit). Figure 4 is an example 1 of a rail ladder circuit diagram that is equivalent to the sequence program created by automatic conversion of the above input data based on the input data written in the variable setting area [111] shown in Figure 3. .

In other words, as shown in Fig. 4, the logic of the self-holding rule-ladder circuit consisting of normally open, normally closed input contacts XIO, Xl1, etc., output coil Y20, and self-holding output contact Y2O, etc. is fixed. It is equivalent to a circuit in which multiple circuits with the above logic are connected, although the variables such as input/output signal names are different, and when creating a rail ladder sequence program, input device with CRT f
A data setting table (1 entry) as shown in Fig. 3 is displayed on the CR7 display screen of il, and its variable setting area tt
t+, for example, XIO, 1, X11 . O,X15.
l, X16.0. All you have to do is input a notator such as Y20 according to the interactive message displayed simultaneously on the above screen.In addition, in the variable setting area Bttl in FIG. A value of .0 indicates a normally closed contact in the case of l;
A value of 0 indicates a normally closed contact.

For convenience of explanation, Figures 3 and 4 above show an example of a self-holding circuit with a simple circuit configuration.・Depending on the factors of the diagnosis location, time-limited elements such as timers have been added, and the number of signal items that should be output by humans has also increased.
Although it is complicated, the principle is the same as in the case of FIGS. 3 and 4 above.

Next, the procedure for creating a sequence program for failure detection/diagnosis will be explained with reference to the flowchart shown in FIG.

First, in step [1011, F D +21, which is a program software package for fault detection and diagnosis, is inserted into F D D +31 in FIG. 1, and step f1
When loading is performed in step 021, a data setting table (IO) is displayed on the CRT+IAI in step (1031).

At the same time, an interactive message is displayed, so input necessary signal names and data from the keyboard + IB according to the instructions in the interactive message displayed on the CRT and fIAI in step 1041.

After confirming that all input has been completed in step (1051), step 06 shows the PC (4) used for control.
) by entering the model name, type, etc. of the step (
1071 is automatically converted into the corresponding PC (41) programming language using a program pre-installed in the software package, and a sequence program for fault detection and diagnosis of the rail ladder circuit is automatically created as shown in Figure 4. .

In step f1081, the completed sequence program for failure detection and diagnosis is stored in the memory of the PC+41 and the user FDt21. Transmits to a printer (5), etc.

That is, step (1091 is the RAM of PC+41
When writing to memory, after writing is completed, it can be monitored and depacked using the CRT input device [11] as a PC+41 ladder circuit.

Step (1101 is a user floppy FD (
2), and can be used for data diversion to another mechanical membrane 4i4 (not shown).

Step (fill) prints the input data in the same format as the data setting table (10) and allows you to visually confirm the input data.Create the glue ladder sequence program for the above failure detection and diagnosis for the target PC. When the process is completed, the process returns to step f1031, where another radar sequence program can be created.

A specific embodiment of this invention will be explained with reference to FIGS. 5 and 6.

Figure 5 is a specific example of the input data setting table mentioned above.
In this example, the XFF of the "Kidousingou" column (50), the "Dehai Sumei" column [511) X10. X11. Xl2. X
13. Each signal of X14 and o, o, o in the "Output" column
,o.

0. is input and set by the user. With only these input settings, the means according to the present invention can automatically create the sequence program shown in FIG. 6.

In Figure 6, the input setting of (50) in Figure 5 is (60
), the input setting (51) in FIG. 5 is converted to (61) and incorporated into the program. Other various symbols are automatically generated by the means of this invention.

Without the means according to the present invention, the user would have to design the entire circuit of FIG. 6 and then input it into the peripheral device to create a program.

However, according to this invention, the user can
The program shown in FIG. 6 can be created by simply setting (51), which has a great effect on saving labor in program creation.

In the above embodiment, a method for automatically creating a sequence program for fault detection/diagnosis was shown, but the method is not limited to creating the above sequence program for fault detection/diagnosis. It can also be used to automatically create control programs with many similar programs, and in this case as well, there is no need to enter the same pattern many times using the CRT input device to create a ladder circuit.

CRT [Sequence programs with the same pattern but different signal names can be easily created by simply inputting data such as signal names into the data setting table f101 on the IAI.

Furthermore, in the above embodiment, the program creation device is C
RT (IAI, keyboard as input method (2B)
Although a CRT-equipped input device (1) called a 20 peripheral device integrated with FDDf31 is used, similar effects can be obtained by using a personal computer or the like.

[Effect of the invention 1 As described above, according to the present invention, predetermined complex logic can be created by simply inputting input data such as input/output signal names in the variable setting area of the data setting table in an interactive manner. Sequence programs are automatically created, so even users without technical knowledge of PCs or electricity can easily create multiple rail ladder sequence programs with the same pattern of complex logic. In addition to saving labor in designing, it also saves labor in inputting programs because it eliminates the need to input all of the sequence programs.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing a sequence program creation system using the automatic sequence program creation method which is an embodiment of the present invention, and FIG. 2 is an example of the automatic sequence program creation method shown in FIG. 1. Figures 3 and 5 are data setting table diagrams displayed on the display screen, Figure 4 corresponds to the data setting table in Figure 3, and Figure 6 corresponds to the data setting table in Figure 5. FIG. 2 is a diagram showing an example of a relay ladder sequence circuit. In the figure, m is an input device with CRT, (IA) is a CRT
, flBl is the keyboard, (2) is a floppy disk sheet (FD), (31 is a floppy disk drive (FDD), f41 programmable controller, (4
A) shows the controller unit part, (4Bl shows the input/output crab knit part, (5) shows the blink, and (8) shows the mechanical equipment. Also, in the figure, the same reference numerals indicate the same or equivalent parts.

Claims (1)

[Claims] A program creation device having an input means and a display screen for creating a relay ladder sequence program used in a programmable controller that sequentially controls a controlled object is provided. means for displaying a data setting table on a display screen of the creation device; means for inputting input data to be set in the variable setting area of the data setting table from the input means of the program creation device; 1. A method for automatically creating a sequence program, comprising: means for automatically creating the sequence program based on the programmable controller; and means for transferring and storing the sequence program in the memory of the programmable controller.