JPH1145103A - Programming device, interruption processing describing method, programmable controller and recording medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a programming device having a user interface, with which an interruption range can be designated by simple operation and the designated interruption range can be recognized at a glance, and an interruption processing describing method for this programming device. SOLUTION: On the picture of a graphical user interface(GUI) displayed on a display device 4, an operator or the like prepares a main/sub control flow program from an input part 2. Further, the operator or the like performs the designating operation and setting input of the interruption range on the GUI picture. These control flow program, interruption range designation and setting contents are edited into prescribed format on an RAM 3 and stored in a storage device 5 (storage medium 5a) later.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for creating a sequence control program, and more particularly to a method for describing an interrupt process in the program.

[0002]

2. Description of the Related Art Conventionally, for example, in a programmable controller (hereinafter, referred to as a PC), there is a programming support tool (programming device) for creating a target sequence control program. Such programming devices are, for example, CR
It has a T, a CPU, a memory, an input unit (keyboard, touch pen, etc.), etc., and causes a program to be created by a graphical representation such as a ladder diagram or an FB (function block) diagram, or by using a command word. Things.

In the sequence control program, interrupt processing is described, for example, when it is desired to perform an operation of turning on an abnormal lamp when an abnormal operation state is detected by monitoring (monitoring) the operation of a device to be controlled. This is because, when an interrupt condition occurs within the interrupt range of the main control flow program, the execution of the main control flow program is interrupted, the sub-control flow program is executed, and the processing of this sub-control flow program (interrupt processing) After the end, the process returns to the main control flow program again. The interrupt range is determined by a prohibition instruction (for example, “D
I ") and a permission instruction (for example," EI ") for releasing the execution prohibition of the interrupt, which is a program range other than the interrupt prohibition range defined by the description. If the abnormal state is detected during the rotation control of the motor, an interrupt is generated and the process transits to the sub-control flow program, and the motor stops by the process (interrupt process) of the sub-control flow program. In addition, the abnormal lamp lights.

After the interruption processing, the processing transits to the main control flow program, and the processing is executed from the next position where the main control flow program is interrupted.

[0005]

As described above, in the conventional programming device, in order to set an interrupt range, a prohibition instruction for prohibiting execution of an interrupt and a permission instruction for releasing prohibition of execution of an interrupt are provided. It had to be described, the program creation work was troublesome, and the interrupt range could not be understood at a glance.

[0006] Furthermore, the overlap range can be specified by a simple operation.
Alternatively, nesting can be specified, and the specified interrupt range has not been made clear at a glance. Also,
It was not possible to return to any position in the main control flow program from the sub control flow program.

An object of the present invention is to specify an interrupt range by a simple operation, to have a graphical user interface that allows the specified interrupt range to be seen at a glance, and to further convert a sub control flow program to a main control flow program. The present invention is to provide a programming device capable of creating a program capable of returning to an arbitrary position, and an interrupt processing description method in the programming device.

[0008]

A first programming device according to the present invention is a programming device for creating a program for operating a programmable controller in a control flow diagram expression, wherein the program is used to control a control flow of a main process and a control of a sub process. A control flow creating means for creating a control flow diagrammatic representation separately from the flow, and transition to the sub-process when a specific event occurs in the control flow of the main process created by the control flow creating means And an interrupt range designating means for designating, in the illustrated representation, an interrupt range which is a range in which the interruption is permitted.

According to the first programming device,
Since the program is divided into a control flow of the main process and a control flow of the sub-process in the illustrated representation, and the interruption range is designated in the illustrated control flow of the main processing in the illustrated representation in the illustrated representation, An operator or the like can specify an interrupt range by a simple operation, and the specified interrupt range can be understood at a glance.

A second programming device according to the present invention is a programming device for creating a program for operating a programmable controller in a control flow diagram expression, wherein the program is divided into a main process control flow and a sub process control flow. A control flow creating means to be created in the flow diagram representation, and a return position from the control flow of the sub-process created by the control flow creation means to the control flow of the main process is designated to an arbitrary position in the diagram representation. Return position designating means.

According to the second programming device,
An operator or the like can specify a return position from the control flow of the sub-process to the control flow of the main process to an arbitrary position by a simple operation, and the return position can be known at a glance.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing the configuration of the programming device according to the present embodiment.

In FIG. 1, a CPU 1 is a central processing unit that controls the entire system of the programming device.
The input unit 2 is, for example, a keyboard, a mouse, a touch panel, or the like.

The RAM 3 is a memory having a storage area for temporarily storing setting contents of a control flow program input and set by an operator or the like. Display device 4
Is a display for displaying a GUI (graphical user interface) screen described later.

The storage device 5 is, for example, an HDD (hard disk device) in which at least an application program for creating a control flow program according to the present embodiment is stored. Or, for example, FDD (Floppy
A disk drive), a CD-ROM drive, or the like, and reads or writes a program or data stored in the storage medium 5a.
This is executed under the control of PU1. Storage medium 5
In a, at least an application program for creating a control flow program according to the present embodiment is stored in a format readable by the storage device 5 and executable by the CPU 1. The storage medium 5a is a portable storage medium that is independent of the apparatus main body and is portable. The storage medium 5a is, for example, an FD (floppy disk). Alternatively, MO (magneto-optical disk), CD
-It may be a ROM, a memory card, or the like. The program code of the application program is magnetically, magneto-optically, or electrically stored in these storage media.

FIG. 2 is a main flowchart for explaining the entire control flow program creation processing according to the present embodiment. Steps S1, S2, S3,
The details of the processing of S4 and S4 will be described later in detail with reference to the drawings.

According to the processing procedure shown in FIG. 2, a control flow program is created by an operator or the like. For the creation of the control flow program, for example, a program input method using an illustrated representation as shown in FIG. 5 is adopted. In this regard, the applicant of the present application filed Japanese Patent Application No.
No. 8598 is proposed. This Japanese Patent Application 8-88
The invention of No. 598 is based on, for example, “parts” (displayed on the display unit by the display control unit), operation commands (“rotation” command and “stop” command), and operation states (“failure” state). An object of the present invention is to propose a method of describing a control program so that an operation of an actual device can be intuitively imaged from a representation of the described control program by describing the control program.

In the creation of the control flow program, first, control processing contents are described separately in a main control flow program and a sub control flow program (step S).
1). The main control flow program and the sub control flow program are composed of a plurality of "elements" executed in time series.

When the creation of the main / sub control flow programs is completed, the main control flow program displayed on the display screen of the display device 4 as shown in FIG. 5, for example, as shown in FIG. Thus, the interrupt range (rectangular area surrounded by the broken line) 26 is designated. Also,
Switching to the display of the input screen as shown in FIG. 8, and the transition destination (sub-control flow program name) via this input screen
Is described (step S2). Subsequently, an interrupt condition for the interrupt range is described (step S3).

Next, a return position from the sub control flow program to the main control flow program is specified (step S4). Then, it is determined whether or not the operation of specifying the interrupt range is to be ended (step S5). If another interrupt range is to be specified subsequently (step S5, NO), the processes of steps S2 to S4 are repeated.

Information such as an interrupt range and an interrupt condition set and input by an operator or the like as described above is embedded in each control flow program as interrupt information for each element shown in FIG. It is. Each element and each piece of interrupt information corresponding thereto are linked by an element number. That is, although not specifically shown, the interrupt information shown in FIG. 3A has information of the corresponding element number.

The data of "monitoring number" in the interrupt information is usually set to the initial setting value "1", but the data of "monitoring number" is changed by the processing described below. There is.

When the specification of the interrupt range is completed (step S5, YES), it is next determined whether or not the interrupt ranges overlap in the main control flow program (step S6).

If they overlap (step S6, Y
ES), in the main control flow program, update the interrupt information of the element at the location where the interrupt range overlaps. That is, the information of "monitoring number" in the interrupt information of this element is set to the number of interrupt ranges (for example, 2) including the element (step S7).

Next, it is determined whether or not the interruption range is nested (nested structure) (step S8). If nesting is being performed (step S8, YES),
In the main control flow program, the interrupt information of the element at the location where the interrupt range is nested is updated. That is, the information of “monitoring number” in the interrupt information of this element is set to the number of interrupt ranges (for example, 2) including the element (step S9).

FIG. 3 is a diagram showing information embedded in the main control flow program and the sub control flow program by the processing shown in FIG. 2. FIG. 3 (a) shows interrupt information 10, FIG. 3 (b) Is identification information 20.

The interrupt information 10 shown in FIG. 3A exists for each program element. The interrupt information 10 has, at its head, information of “monitoring number” 11 indicating the number of events to be monitored in the element. The “interruption range” 12, the “range name” 13, the “interruption condition” 14, the “set value” 15, the “sub-control flow name” 16, the “main control” It has interrupt information composed of information such as "flow name" 17 and "main control element number" 18. Each of these information will be described in detail later,
The content of the interrupt information 10 differs between the main control flow program and the sub control flow program. For example, the interrupt information 10 in the main control flow program does not have information such as the “main control flow name” 17 described above. The interrupt information 10 in the sub-control flow program includes the above-mentioned “interrupt condition” 14, “set value” 15, “sub-control flow name” 1
It does not have information such as 6.

FIG. 3 also shows elements other than the interrupt element.
A storage area for the interrupt information 10 shown in FIG. However, the interrupt information is not stored (undefined) in the storage area corresponding to the element for which the interrupt is not defined.

The identification information 20 shown in FIG. 3B is information for identifying each control flow program to be created from each other. When the interrupt processing in the main control flow program occurs, the sub-control flow program of the transition destination is identified. Identify,
This is information used to identify the return main control flow program in the transition destination sub-control flow program.

The identification information 20 is composed of "flow type" 21 and "flow name" 22. “Flow type”
Reference numeral 21 indicates whether the control flow program is main or sub, and "flow name" 22 indicates the name of the control flow program. The identification information 20 is embedded in the control flow program with the creation of the illustrated expression program of FIG. 5 described later.

Hereinafter, details of each process shown in the flowchart of FIG. 2 will be described with reference to FIGS. FIG.
5 is a flowchart illustrating a control flow program creation procedure in step S1 of FIG.

FIG. 5 is a diagram showing an example of the above-described graphic expression program (display screen of the display device 4) by the present applicant and created according to the flowchart of FIG.
Hereinafter, the control flow program creation processing in step S1 of FIG. 2 will be described with reference to FIGS.

In FIG. 4, first, the name of the main control flow program is described (step S11). Next, the processing content of the main control flow program will be described. (Step S12).

The above steps S11 and S1 in the illustrated representation
For example, as shown in FIG. 5A, when creating the processing program of No. 2, the flow name is described in the START position of the main control flow program. Furthermore, the processing content is described for each of the program elements A, B, C, and D. For example, “motor A” and “forward” are described as the processing contents of the element A, and “motor A” and “stop” are described as the processing contents of the element B. Here, each "element" corresponds to a "part" in the invention of Japanese Patent Application No. 8-88598, and "forward rotation", "stop", or "reverse rotation" to be described later is an "operation command". is there. Further, "motor A" or "lamp A" described later corresponds to the "label name" in the above invention.

Similarly, "motor A" and "reverse rotation" are described as the processing contents of the element C, and "motor A" and "stop" are described as the processing contents of the element D. In the main control flow program created as described above, FIG.
The identification information 20 of (b) is embedded. In this case, “main” is stored in the “flow type” 21 field. Further, the name described in the process of step S11 is stored in the field of “flow name” 22.

Next, the name of the sub-control flow program is described (step S13). Next, the processing contents of the sub-control flow program will be described. (Step S1
4). By the above processing, for example, as shown in FIG. 5B, the flow name is described in the START position of the sub-control flow program. Further, the processing content is described for each of the program elements of the element E and the element F. For example, element E
"Motor A" and "stop" are described as the processing contents of "Lamp A" and "lighting" as the processing contents of the element F. Note that the processing of the element F is for turning on a lamp for notifying the occurrence of an abnormality.

In the sub-control flow program, the identification information 20 is stored in the same manner as in the main control flow program.
Is embedded. The identification information 20 embedded in each control flow program as described above identifies the control flow program of the interrupt destination or the return destination when the control flow program is executed on the PC and an interrupt process occurs. Used for

FIG. 6 is a flow chart for explaining the processing of step S2 in FIG. 2 (the description of the interrupt range). FIG.
FIG. 6 is a diagram illustrating an example of an operation of specifying an interrupt range for a main control flow program created as illustrated in FIG.

FIG. 8 is a diagram showing an example of an input screen (GUI) 30 for allowing an operator or the like to describe the name of the interrupt range specified as shown in FIG. 7 or to set an interrupt condition described later. is there.

The description of the interrupt range description processing will be described below with reference to FIGS. 6, 7, and 8. In FIG. 6, first, an interrupt range is specified in the main control flow program (step S21). For example, as shown in FIG.
In response to the main control flow program displayed on the display screen, a range 26 including the element A and the element B (a range surrounded by a broken line in the drawing) is specified by a range specifying operation using a mouse or the like. Specify as an interrupt range.

Next, by performing a predetermined key operation, etc., FIG.
Is displayed on the input screen 30 as shown in FIG. And
Through this input screen 30, the name of the interrupt range specified in step S21 is described, and a sub-control flow program to which a transition is made when an event that satisfies an interrupt condition described later occurs within this interrupt range. Is described (step S22). These descriptions are made by inputting into the “range name input area” 31 and the “flow name input area” 32 on the input screen 30 in FIG. 8, respectively.

FIG. 9 is a flow chart for explaining the processing of step S3 in FIG. 2 (the description of the interrupt condition). In the figure, first, when an input of an interrupt condition is performed by an operator or the like (this specification is performed in the “condition input area” 33 on the input screen 30 of FIG. 8), the specified interrupt condition Is determined (step S31).

The types of the interrupt conditions include the input screen 30 shown in FIG.
As shown in the above “condition input area” 33, the “timer”
Or, there are two types of “event”. When the "timer" executes the control flow program on the PC,
This is an interrupt that starts the timer from the beginning of the interrupt range and sets an interrupt condition when the timer exceeds a specified time. "Timer" in the "condition input area" 33 on the input screen 30
Is selected and designated, the operator or the like subsequently inputs the specified time of the timer into the input area of "time" 34 on the input screen 30 (step S32). The condition of the "timer" is that, for example, if the motor is operating normally, the processing of the elements A and B should end within the specified time, but the specified time is It is assumed that the motor continues to rotate forward even after it has passed.

On the other hand, the "event" is an interrupt condition for a case where an external event occurs within the interrupt range of the main control flow program (while the program within the interrupt range is being executed). “Condition input area” on the input screen 30
If “event” is designated as the interrupt condition in 33, the operator or the like subsequently enters, for example, an external event programmable controller (PC) in the input area of “event name (address)” 35 on the input screen 30. (The storage start address of the interrupt processing program when an external event occurs) is input (step S3).
3).

According to the processing of FIGS. 6 to 9 described above, FIG.
In the main control flow program shown in FIG. 7, the interrupt information 10 of the program elements A and B within the specified interrupt range
(FIG. 3A) is embedded. In this example, as shown in FIG. 7, since there is only one interrupt range for the elements A and B, the “monitoring number” 11 is “1”. If two or more interrupt ranges overlap a certain program element, the “monitoring number” 11 becomes “2” or more. This will be described later.

When an interrupt range is specified in the "interrupt range" 12 as shown in FIG. 7, the start / end position of the interrupt range is detected, and data indicating this start / end position ( Element number) is stored. The “range name” 13 and the “sub-control flow name” 16 are input (described) in the “range name input area” 31 and the “flow name input area” 32 on the input screen 30 in FIG. 8, respectively. Information is stored.

The “interrupt condition” 14 stores one of the event / timer interrupt conditions specified in the “condition input area” 33. “Setting value” 15 includes
In the “time input area” 34 or the “condition input area” 33, the set value of the timer, the memory address, and the like input in the area are stored.

The above "monitoring number" 11 to "set value" 1
Information up to 5 is interrupt information embedded in the main control flow program. Interrupt information 1 shown in FIG.
Other information in 0 (sub control flow name 16 to main control element number 18) is interrupt information embedded in the sub control flow program.

FIG. 10 is a flowchart for explaining the processing in step S4 in FIG. FIG. 11 shows an input screen of an illustrated expression program for designating a transition position and a return position in the processing of FIG.

FIG. 12 is a view showing an input screen 40 for allowing an operator or the like to describe the name in the processing of FIG. Hereinafter, a description will be given with reference to FIGS. 10, 11, and 12.

In FIG. 10, first, a transition position to the main control flow program is designated in the sub control flow program (step S41). This is, for example, FIG.
As shown in FIG. 1 (b), a transition position (return position) to the main control flow program is input and designated in the sub-control flow program. In the figure, a transition position is designated between the element F and the element G, and a symbol (▽) indicating a return position in the main control flow is input as shown.

Next, in order to specify the return position in the main control flow, the interrupt range name specified in step S22 of FIG. A step name, which is a return position from the control flow program, is described (step S42). This description is stored in the input device 2
Is performed by switching the screen of the display device 4 to the display of the input screen 40 shown in FIG.

On the input screen 40 shown in FIG. 12, character strings of "range name:" and "step name:" are displayed, and their respective input regions, "range name input regions" 41, " An input area "42" of the step name is shown.

The "step name" is, for example, an element number in the main control flow program. The operator or the like completes the setting operation by inputting the data into each of the input areas 41 and 42 and then clicking the setting button 43 with a mouse. When the setting operation is interrupted, the cancel button 44 is clicked.

When the above setting operation is completed, the screen returns to the illustrated expression input screen shown in FIG. Then, the return position from the sub-control flow program at the transition destination in the interrupt processing is specified in the main control flow program (step S43 in FIG. 10).

In the example shown in FIG. 11A, a return position is specified between the element B and the element C. At this time, FIG.
In the sub-control flow program shown in (b), when the same symbol (▽) is input as shown in the figure, the two are associated with each other.

Finally, at the return position specified in step S43, the interrupt range name specified in step S22 in FIG. 6 and the step name described in step S42 are described (step S44 in FIG. 10). This is because the screen of the display device 4 is displayed as shown in FIG.
The input screen 40 is switched to the display of the input screen 40 shown in FIG. 7 and the data is written in the “range name input area” 41 and the “step name input area” 42, respectively.

In steps S42 and S44, unless the interrupt ranges overlap or are nested as shown in FIGS. Only the input may be performed.

By the above-mentioned processing, as shown in FIG. 11, for example, after the interruption processing is completed, returning from an arbitrary position in the sub-control flow program to an arbitrary position (designated return position) in the main control flow program. Can be.

FIG. 13 shows an example of a situation of specifying an interrupt range in which the determination processing in steps S5 and S7 in FIG. 2 is YES. FIG. 13A shows an example in which the interrupt ranges are specified redundantly, and FIG. 13B shows an example in which the interrupt ranges are specified by nesting.

In FIG. 13A, an interrupt range a designates a range including an element A and an element B. Interrupt range b
Specifies a range including the element B and the element C. Therefore, in the element B, since the interrupt range a and the interrupt range b overlap, the processing of the step S6 in FIG.
The information of the “monitoring number” 11 of the interrupt information 10 of “1” is “2”. Further, in the interrupt information 10 of the element B, information on each of the two interrupt ranges a and b is stored.

In FIG. 13B, the interrupt range c specifies the range including the elements A, B, and C, and the interrupt range d specifies the range including the element B. In the element B, the interrupt range d is nested within the interrupt range c. Also in this case, the information of the “monitoring number” 11 of the interrupt information 10 of the element B becomes “2” and the interrupt information 10 of the element B Information of each of c and d is stored.

It should be noted that whether the interrupt ranges overlap or are nested is determined based on the information of “interrupt range” 12 in the interrupt information 10 of FIG. The determination is made based on whether or not the interrupt range is completely included.

FIGS. 14A and 14B are diagrams for explaining an example of processing for executing the control flow program created as described above on a PC. FIG.
The flow control flag 50 shown in FIG. 14A and the step information 60 shown in FIG. 14B are information used when the PC executes the control flow program.

Hereinafter, an example of processing for executing a control flow program using the flow control flag 50 and the step information 60 will be described. First, in the control flow program created as shown in FIG. 5, FIG. 7, FIG. 11, etc., a judgment process is performed between each element even if it is not particularly displayed on the display screen of the display device 4. For example, element A
The determination process between elements B is referred to as determination process AB, and the determination process between elements B and C is referred to as determination process BC. Further, an example in which the interrupt condition is monitored by a timer will be described.

First, when the processing of the element A is completed, in a determination processing AB, a timer is started, and processing of transferring the execution right from the processing of the element A to the processing of the element B is performed. Then, the processing of the element B is executed, and in the determination processing BC, the timer is monitored for completion (end). This is element B
Is searched using the element number (in this case, “element B”), and the interrupt condition 1 in the interrupt information 10 is searched.
5. This is performed based on the information of the set value 16.

If the timer is up before the processing of the element B is completed, the program to which the transition is made is determined from the information of the sub-control flow name 16 in the interrupt information 10, and the process proceeds to the interrupt processing. . At this time, the flow control flag 50 and the step information 60 shown in FIGS. 14A and 14B are used. For example, if it is determined in the determination process BC that the timer has expired as described above, the sub-control flow program of the interrupt destination is determined based on the interrupt information 10 of the element B as described above. Set the bit of the activation 51. As a result, the main control flow program is put on hold, and the execution right is passed to the sub control flow program.

On the other hand, the sub-control flow program constantly monitors the flow control flag 50, and starts processing (interrupt processing) when detecting that the bit of the activation 51 is set. Then, when the sub-control flow program ends the processing, the hold state of the main control flow program is released by setting a flag of the hold release 52 of the flow control flag 50. Further, the return flow position (element number) is read from the storage area of the main control element number 16 of the interrupt information 10 corresponding to the element F of the sub-control flow program, and this is read as the step information 60 shown in FIG. Write to. Then, the sub-control flow program stops executing.

The main control flow program is as follows:
A determination process is performed based on the flow control flag 50 and the step information 60, and when it is detected that the suspension has been released, the execution right is passed to the return flow position and the process is restarted.

[0070]

As described above in detail, according to the programming device of the present invention and the interrupt processing description method in this programming device, the interrupt range can be specified by a simple operation, and furthermore, the method can be simplified. The operator can specify the overlapping range or the nesting range of the interrupt range, so that the specified interrupt range can be understood at a glance.

Further, it is possible to return from the sub control flow program to any position in the main control flow program.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a configuration of a programming device according to an embodiment.

FIG. 2 is a main flowchart illustrating an entire control flow program creation process according to the embodiment;

3A and 3B are diagrams showing information embedded in a control flow program by the processing shown in FIG. 2, wherein FIG. 3A shows interrupt information and FIG. 3B shows identification information.

FIG. 4 is a flowchart illustrating a control flow program creation procedure in step S1 of FIG. 2;

FIG. 5 is a diagram showing an example of creating an illustrated expression program according to the flowchart of FIG. 4;

FIG. 6 shows a process of step S2 in FIG. 2 (designation of an interrupt range)
It is a flowchart explaining.

FIG. 7 is a diagram showing an example of an operation of designating an interrupt range for a main control flow program created as shown in FIG.

FIG. 8 is a diagram showing an example of an input screen for setting a name of an interrupt range, setting an interrupt condition, and the like.

FIG. 9 shows a process of step S3 in FIG. 2 (interrupt condition description)
It is a flowchart explaining.

FIG. 10 is a flowchart illustrating a process in step S4 of FIG. 2;

FIG. 11 shows an input screen of an illustrated expression program for designating a transition position, a return position, and the like.

FIG. 12 is a diagram illustrating an example of an input screen for describing a name and the like.

FIG. 13 is a diagram illustrating an example of overlapping and nesting of interrupt ranges.

FIG. 14 is a diagram illustrating an example of a process of executing a created control flow program on a PC.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 CPU 2 Input device 3 RAM 4 Display device 5 Storage device 5a Storage medium 10 Interrupt information 11 Monitoring number 12 Interrupt range 13 Range name 14 Interrupt condition 15 Set value 16 Sub-control flow name 17 Main control flow name 18 Main control Element number 20 Identification information 21 Flow type 22 Flow name 26 Interruption range 30 Display screen 31 Range name input area 32 Flow name input area 33 Condition setting area 34 Time input area 35 Event name input area 36 Setting (button 37) Cancel (button) 40 Input screen 41 Range name input area 42 Step name input area

Continued on the front page (51) Int.Cl. ⁶ Identification code FI G05B 19/05 W

Claims (7)

[Claims] 1. A programming device for creating a program for operating a programmable controller in a control flow diagram expression, wherein the control flow creates the program in a control flow diagram expression by dividing the program into a main process control flow and a sub process control flow. Creating means; and an interrupt range, which is a range in which a transition to the sub-process is permitted when a specific event occurs in the control flow of the main process created by the control flow creating means, is illustrated. A programming device, comprising: an interrupt range designating means for designating with (1). 2. When two or more interrupt ranges are specified by the interrupt range specifying means, the interrupt ranges overlap or nest with a certain element in a control flow of the main processing. The programming device according to claim 1, further comprising: a determination unit configured to determine whether the programming is completed. 3. A programming device for creating a program for operating a programmable controller in a control flow diagram expression, wherein the control flow creates the program in a control flow diagram expression by dividing the program into a main process control flow and a sub process control flow. Creating means; and return position designating means for designating a return position from the control flow of the sub-process created by the control flow creating means to the control flow of the main processing to an arbitrary position in the illustrated representation. A programming device, characterized in that: 4. A programmable controller for executing a program created by the programming device according to claim 1, 2 or 3. 5. An interrupt processing description method in a programming device for creating a program for operating a programmable controller in a control flow diagram expression, wherein the program is divided into a main process control flow and a sub process control flow. In the created control flow of the main process, an interrupt range, which is a range in which a transition to the sub-process is permitted when a specific event occurs, is designated by an illustrated expression. Interrupt processing description method characterized by the following. 6. A function of, when used in a computer, creating a program for operating a programmable controller in a control flow diagrammatic expression by dividing the program into a control flow of a main process and a control flow of a sub-process, and the created main process A function for designating, in the control flow, an interrupt range, which is a range in which a transition to the sub-process is permitted when a specific event occurs, in a graphical representation, and a program for realizing A recording medium recorded in a readable format. 7. A function for, when used in a computer, creating a program for operating a programmable controller in a control flow diagrammatic expression by dividing the program into a control flow of a main process and a control flow of a sub process, and the created sub process And a program for realizing a function of designating a return position from the control flow to the control flow of the main processing to an arbitrary position in the form of an illustration in a form readable by the computer.