JPH10301763A - Program preparation supporting device for digital controller - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the program preparation supporting device of a digital controller in which drawing management and revision management can be simplified, the efficiency of controller design, the exclusion of the overlap inputting work of drawing information, the reduction of manufacturing man-hours, and smooth movement from design to maintenance can be realized. SOLUTION: In this supporting device, a program to be executed by a controller is logic-designed and automatically generated by executing logic monitoring, parameter adjustment, and logic change as a maintenance work. In this case, this device is provided with a display means 20 for displaying a screen including each kind of symbol prepared at the time of logic design, inputting means 21 for inputting the specification of a free format and free layout to the screen, and inputting at least each kind of symbol, and communicating means 29 for operating communication with the controller. The I/F of design, preparation, and maintenance work is operated on a common screen.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention performs a series of maintenance operations for designing, creating, and maintaining logic (including process control logic and sequence logic) of a controller including a digital controller for process control. The present invention relates to a program creation support device for a digital control device.

In particular, the present invention implements a maintenance work interface (I / F) on a display screen of a common design drawing, thereby improving the efficiency of controller design, eliminating and creating duplication of drawing information. Reduce man-hours and
The present invention relates to a program creation support device for a digital control device that realizes a smooth transition from design to maintenance.

[0003]

2. Description of the Related Art Generally, in the field of process instrumentation and the like, since downsizing and low cost of computers are required, commercially available general-purpose software (S / W) is incorporated. However, since the control system as a whole requires a great deal of cost to create design drawings and creation drawings, sufficient cost reduction has not been realized.

In particular, as the scale of the control system increases, the establishments that perform the basic design and the detailed design differ, so that the information to be interfaced for each design is often duplicated, and a large amount of time is required for creation. become.

[0005] Conventionally, a program creation support device for designing, creating and maintaining a digital control device for the purpose of process control has been disclosed in, for example, Japanese Patent Application Laid-Open No. 6-16.
Various proposals have been made with reference to JP-A Nos. 8011, 6-168110 and 6-230804.

[0006] In this type of program creation support device for a digital control device, a drawing when designing the logic of the controller (digital control device) and a drawing (such as a ladder diagram) for generating a language for the controller to understand the logic are provided. Are used as program drawings (hereinafter simply referred to as “drawings”).

[0007] These drawings are input to the controller via a CAD screen or the like. However, the description area of various symbols in the screen on which the drawings are displayed and the format of various symbols used are strictly specified. I have.

FIG. 11 is an explanatory view showing a screen on which a drawing used for conventional program creation support is displayed. In the figure, various symbols, that is, logic symbol parts Y1 and Y2 are described in the center of the screen G1. The logic description area 14 is designated.

On both sides of the logic description area 14, I / F signal display areas 15 and 16 for displaying input / output signals for a controller (not shown) are designated.

A parameter display area 17 for displaying a list of parameters to be used is specified at the side end of the screen G1. Here, the parameter display area 17
Is set in the screen G1, but another screen (not shown)
May be set to

Further, at the lower part of the screen G1, a format description area 18 in which a figure number, a signature, etc. are described.
And the revision area 19 in which the revision content at the time of the design change is described.
Is specified.

In this case, the logic description area 14, I /
The F signal display areas 15 and 16 are specified at fixed positions, respectively, and the size of each area is set to a fixed size in advance irrespective of the complexity of the logic.

It is to be noted that such drawings are individually present in various drawings such as CAD drawings and ladder drawings, and usually several hundred or more are used for one control program.
When the control target is a nuclear reactor or the like, several hundred controllers are required for one reactor, and the number of ladder drawings is 5 to 6 for one design drawing. Since it is divided, the increase in the number of drawings is immeasurable.

The designer performs a logic design for the controller using the screen G1 as shown in FIG. 11, and the designer confirms the validity of the created logic design to some extent on the screen G1. After that, it is confirmed by actually executing the logic in the controller.

In addition, regarding a range of influence when a process input / output card inserted / removed into / out of the controller fails or an output signal affected when a specific input signal becomes abnormal, a designer or a person in charge of maintenance Screen G
Check on 1 above.

Further, when a digital input card is inserted into or removed from the controller while the power supply of the controller is in operation, when the digital input card is inserted into the controller, the input signal of the digital input card is displayed on the screen G1 in advance. Output signal is disconnected from the outside.

Similarly, when the analog input card is inserted into the controller while the power supply of the controller is in operation,
The output signal related to the input signal of the analog input card is separated from the outside on the screen G1 in advance.

[0018]

As described above, the conventional program creation support device for a digital control device has a program drawing for designing the logic of the controller and a drawing (such as a ladder diagram) of the language of the logic separately. Therefore, there is a problem that the input operation of the design information is duplicated every time the creation is supported on the screen G1, and that the drawing management and the revision management are complicated.

Further, regardless of the complexity of the logic, the size and position of the logic description area 14 are fixed, and the sizes of the I / F signal display areas 15 and 16 in which the process input / output signals are described. Since the position and the position are fixed, there is a problem that it is not possible to represent control logic related information (for example, description of an external H / W (hardware), a switch, etc., and a connection diagram with the outside).

Further, since the designer checks the validity of the logic created on the screen G1 on the screen G1, the reliability of the design logic varies, and the same validity is obtained every time the logic is changed. However, there is a problem in that a logic check operation is required and a great deal of time is required for logic design.

Also, since the designer has checked on the screen G1 the influence range of the failure of the process input / output card of the controller, there has been a problem that much time is required.

Further, when an output signal related to a specific input signal is extracted and monitored, the output signal is extracted from the screen G1 by the designer or maintenance person, so that it takes a lot of time. There was a point.

The present invention has been made in order to solve the above-described problems. By performing the maintenance work I / F on a common screen, the efficiency of controller design can be improved.
Eliminating duplication of drawing information, reduction of man-hours,
It is another object of the present invention to provide a digital control device program creation support device that realizes a smooth transition from design to maintenance.

[0024]

According to the present invention, there is provided a program creation support apparatus for a digital control device, which designs a logic including a process control logic and a sequence logic for a controller including a digital control device for the purpose of process control. In a program creation support device for a digital control device that creates a program for causing a logic to be executed by a controller and performs maintenance of logic monitoring, parameter adjustment and change, a screen including various symbols created when designing the logic is displayed. Display means for displaying, input means for inputting free format and free layout specifications for the screen, and input means for inputting at least various symbols, and communication means for communicating with the controller, design,
The creation and maintenance work is performed based on the screen.

Further, the program creation support device of the digital control device according to the present invention includes extraction means for extracting various symbols from the logic description area of the controller in the design, creation and maintenance work, and the input means includes the logic description area. Is set on the screen, and the various symbols include logic symbol parts in the logic description area.

The logic description area in the program creation support device of the digital control device according to the present invention is defined by rectangular symbols, and the size and arrangement of the rectangular symbols are arbitrarily set via area setting means. Things.

Also, the program creation support device of the digital control device according to the present invention includes simulation means for executing functions of various symbols by using data values input from the input means, and the input means can arbitrarily set the data values. And data value setting means for setting the data value.

Further, the program creation support device of the digital control device according to the present invention includes a logic confirmation unit for confirming the validity of the logic on the screen based on the execution result of the simulation unit, and the display unit includes a logic confirmation unit. The confirmation result of the means is displayed on the screen.

Further, the simulation means in the program creation support device of the digital control device according to the present invention includes input signal designating means for designating a specific input signal, and the logic checking means comprises an output signal associated with the specific input signal. And display means for displaying a result of the output signal acquisition means corresponding to a specific input signal.

Further, the logic confirmation means in the program creation support device of the digital control device according to the present invention is for confirming the range of influence of the logic on the failure and omission of the process input / output card attached to / detached from the controller.

Further, the simulation means in the program creation support device of the digital control device according to the present invention includes output signal designating means for designating a specific output signal, and the logic checking means includes an input signal associated with the specific output signal. And display means for displaying the result of the input signal relating to a specific output signal in the input signal obtaining means.

Further, the program creation support device of the digital control device according to the present invention provides an extraction means for extracting various symbols from a logic description area of a controller in a design, creation and maintenance work, and a data value inputted from an input means. Simulation means for executing the functions of various symbols by using, and logic confirmation means for confirming the validity of the logic on the screen based on the execution result of the simulation means, and the input means displays the logic description area on the screen. Area setting means for setting, and data value setting means for arbitrarily setting a data value, the display means,
The confirmation result of the logic confirmation means is displayed in the screen.

[0033]

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiment 1 FIG. Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing a schematic configuration of a first embodiment of the present invention. In the figure, a controller 1 including a CPU is constituted by a digital controller for process control.

The program creation support device 2 of the controller 1 communicates with the controller 1 via a network 3 such as a LAN, designs a logic such as a process control logic and a sequence logic of the controller 1, and transmits the logic to the controller 1.

The controller 1 receives measurement data signals D from various sensors 4.
Various actuators 5 are driven in response to the measurement data signal D.

The program creation support device 2 operates to automatically generate a program for causing the controller 1 to execute the created logic in the controller 1, confirming the logic (monitoring and adjustment), adjusting parameters and changing the logic, and the like. Is performed as a maintenance operation.

For this reason, the program creation support device 2
A display device 20 for displaying a drawing (to be described later) including various symbols created when designing the logic, a key input device 21 for inputting various symbols and the like, and a mouse 21a
And a drawing file 22 for storing various program data and the like, and a controller execution program file 23.

The key input device 21 and the mouse 21a are
A logic description area (to be described later) is set on the screen (drawing) in order to input various symbols as well as free format and free layout specifications on the screen (drawing) displayed on the display device 20. It comprises an area setting means and a data value setting means for arbitrarily setting a data value.

The program creation support device 2 includes a screen creation means 24 for creating a screen for performing various maintenance support work, and an extraction means 2 for extracting various symbols from the logic description area of the controller 1 in the maintenance support work.
5 and a compiling means 26 for compiling a diagram specification based on the extracted various symbols to create a target program.

Further, the program creation support device 2 simulates the function of various symbols using the input data values, and verifies the validity of the logic on the screen (drawing) based on the execution result of the simulation means 27. A logic checking unit 28 for checking and a communication unit 29 for communicating with the controller 1 via the network 3 are incorporated.

The logic confirmation means 28 acquires an output signal related to a specific input signal, and for example, a process input / output card (to be described later) which is attached to and detached from the controller 1.
Also check the range of influence of logic on failures and omissions. The display means 20 displays the result of the confirmation by the logic confirmation means 28 on the screen.

FIG. 2 is a block design drawing (hereinafter simply referred to as “drawing”) for supporting program creation displayed on the display device 20.
FIG. In FIG. 2, a logic description area 34 for describing various symbols such as logic symbol components Y4 and Y5 and other symbol components Y9 is set in a screen G2 in the form of a design drawing instead of a ladder drawing.

Each of the logic symbol parts Y4 and Y5 in the logic description area 34 is connected, for example, by a signal line L1. Here, the signal line L of the analog signal
1 is indicated by a broken line, and the signal line of the digital signal is indicated by a solid line.

The logic description area 34 corresponding to the target program of the controller 1 is defined by a rectangular symbol. The size and arrangement of the rectangular symbols in the logic description area 34 are determined by the designer's will.
An arbitrary position and size are set via the area setting means of the input device 21.

Above the logic description area 34, a process input card X1 and a process output card Z1 are described as signal information graphics (symbols). Between the process input / output cards X1 and Z1 and the logic description area 34, The I / F signals X2 and Z2 are described.

These process input / output cards X1, Z
1, and the graphics of the I / F signals X2 and Z2 are collectively referred to as process input / output symbol parts. Among them, the process input card X1 and the I / F signal X2 are process input symbol components, and the process output card Z1 and the I / F signal Z2 are process output symbol components.

In the lower part of the logic description area 34, similarly to the above, a format description area 38 for describing the figure number of the screen G2 and a revision area 39 for describing the content of the revision are set. . If necessary, the parameter display area (not shown) may be set on the same screen or another screen.

On the other hand, in the logic description area 34, various logic symbol components Y4 and Y5 are described, and, for example, symbol components (signal calling graphics) indicating a jump function to other drawings than the screen G2. Y9 and the like can be described.

A CAD or word processor S / W is used for the input operation of the screen G2 as shown in FIG. 2, whereby a signal line between each symbol and Japanese can be freely inputted. Various logic symbol components Y4, Y5, and the like can be attached.

These logic symbol components include a logic symbol component of an input card and an output card, a logic symbol component of an input signal and an output signal, and a basic element of logic (for example, AND, OR, +,-, proportional, timer). , Upper limit setting, lower limit setting, switch, flip-flop, etc.).

Further, for example, by connecting each logic symbol component Y4, Y5 with a signal line L1,
One logic symbol component Y4 and another logic symbol component Y5 can be associated with each other. Similarly, logic symbol components Y4 and Y5 and I / F signal Z
The two symbols and another symbol part Y9 can be associated with each other by connecting them with signal lines.

Therefore, the controller 1 can automatically generate a language for executing logic based on the connection state of the logic symbol components Y4 and Y5 and the meaning indicated by the logic symbol components Y4 and Y5. .

The display colors of the logic symbol components Y4, Y5, etc. on the display device 20 change according to the data sent from the controller 1 or the data in the program creation support device 2. It is displayed in "yellow" when the data signal is ON and in "green" when the data signal is OFF.

The logic symbol components Y4, Y
By the display change of 5, the current state of the internal logic of the controller 1 and the simulation state of the logic can be visualized.

Hereinafter, a procedure for automatically generating the program of the controller 1 from the free format and free layout screen G2 will be described with reference to the flowchart of FIG. 3 together with FIGS. As described above, the program creation support of the controller 1 is performed on the free format and free layout screen G2 created at the time of design.

First, by acquiring coordinates of a rectangle for defining the logic description area 34, the logic description area 34 is obtained in the screen G2 (step S).
1). At this time, a rectangle for defining the logic description area is selected from the input menu on the screen G2, and the symbol of this rectangle is pasted on the screen G2, and the arrangement of the rectangle and the ratio and size of the length and width can be arbitrarily changed. Set.

Next, the logic symbol parts Y4 and Y5 inside the logic description area 34 are extracted (step S).
2). Here, the extraction of the logic symbol components Y4 and Y5 includes the “ID” of the logic symbol components Y4 and Y5, the “tag number (identifier)” assigned to the logic symbol components Y4 and Y5, and the logic symbol components Y4 and Y5. Y
5 means that the "position coordinates" on the drawing are taken out from the screen G2.

Subsequently, the process input / output symbol components described outside the logic description area 34, that is, the symbols of the I / F signals X2 and Z2 of the controller 1, and the process input / output cards X1 and Z1 are extracted ( Step S3). The extraction result of the logic symbol components Y4 and Y5 inside the logic description area 34 is used for generating a logic program of the controller 1 (step S4).

Finally, the extraction results of the I / F signals X2 and Z2 and the process input / output cards X1 and Z1 are used to generate an I / O definition of the controller 1 (step S5).

Next, the specific operations of steps S2 to S5 will be described with reference to the detailed explanatory diagram of FIG. In FIG. 4, a screen G2 shows a control logic diagram relating to “tank water level”.

In screen G2, for example, “FYB1
The process input card X <b> 3 indicated by “01” uses the tank water level from the first sensor 41 as input data and “FYB10
The process input card X5 indicated by "2"
2 is used as input data.

The process input card X3 has an I / F signal X4 indicating the first tank water level indicated by the analog input “AI”.
It is introduced into the logic description area 34 as (input data). The process input card X5 also includes an I / F signal X6 indicating the second tank water level by the analog input “AI”.
It is introduced into the logic description area 34 as (input data).

On the other hand, for example, the process output card Z 3 indicated by “FYB 401” uses the outflow control amount of the first solenoid valve 51 as output data, and the process output card Z 5 indicated by “FYB 402” The outflow control amount is used as output data.

The process output card Z3 derives the outflow control amount for the first tank water level from the logic description area 34 as an I / F signal Z4 (output data) indicated by an analog output "AO". Also, process input card X
5 derives an outflow control amount for the second tank water level from the logic description area 34 as an I / F signal Z6 (output data) indicated by an analog output “AO”.

In the logic description area 34, various symbol parts Y7 to Y9 are described together with the logic symbol parts Y2, Y3, Y5 and Y6. here,
The meaning of each logic symbol component Y2, Y3 and Y5 is as described above.

The logic symbol component Y3 calculates the first and second water level differences via the logic symbol component Y5, and outputs tank level difference data. The logic symbol part Y6 turns on the output data when it exceeds a predetermined high water level.

For the symbol part Y9, for example, a proportionality ratio calculated in another drawing is introduced and input to the two logic symbol parts Y2. Symbol parts Y7, Y8
Sends the output data of each logic symbol component Y3, Y6 to another controller (not shown) via the network.

On the other hand, the process output card Z7 indicated by "DO001" uses the display contents of the alarm window 53 as output data, and outputs the high water level output data from the logic symbol part Y6 as an I / F indicated by a digital output "DO". It is derived from the logic description area 34 as a signal Z8 (output data).

By the above-described step S1 (see FIG. 3),
The logic description area 34 of the controller 1 is obtained,
In step S2, logic symbol components Y2 to Y6 and symbol components Y7 to Y9 are extracted from inside the coordinates of the logic description area 34.

At this time, there are two logic symbol parts Y2 indicating the multiplication “×” and the LAG (time constant delay) operation “LA
G ", two logic symbol parts Y5 indicating addition" + ",..., Etc., on the screen G2.
6 is obtained.

These logic symbol parts Y2 to Y6
Among them, the logic symbol component Y2 indicated by “x” and the logic symbol component Y3 indicated by “+” are “2 input, 1 output” logic symbol components, and are “LA”.
The logic symbol component Y5 indicated by “G” is “1 input, 1
This is the logic symbol part of "output".

Here, one input terminal of the logic symbol component Y2 indicated by "x" is connected to the I / F signal X4 indicating the analog input "AI". In this connection, the other end (the last end in the case of a broken line) of the signal line L2 connected to the input end of the logic symbol component Y2 is a boundary of the logic description area 34. Therefore, it can be seen from the above-described step S3 that the I / F signal X4 indicated by “AI” is arranged near the boundary point at the other end of the signal line L2.

As a result, the I / F signal X
The signal data of No. 4 is one of the input data of the logic symbol part Y2 indicated by “x”. Further, it can be seen that the other input of the logic symbol part Y2 is the signal data of the symbol part Y9 indicated by the tag number “FAX001” at the end of the broken line. The signal data of the symbol part Y9 is data defined in other drawings than the screen G2.

Further, the I / F signal X4 has the tag number “F”
Process I / O card X to which "YB101" is assigned
It can be seen that it is connected to the information of No. 3. Therefore,
The data storage address of the I / F signal X4 is the tag number “F
Process I / O card X to which "YB101" is assigned
3 is uniquely determined.

Logic symbol part Y2 indicated by "x"
Multiplies two input data and outputs the result of the multiplication. The output data of the logic symbol part Y2 is “LA
G "as input data of the logic symbol part Y5. The output result of the LAG operation by the logic symbol part Y5 is an I / F indicated by an analog output I / F “AO”.
F signal Z4 and logic symbol component Y3 indicated by "+"
And the respective input data.

Next, the logic description area 34 in step S1 will be described with reference to FIGS.
A specific setting operation will be described. In FIG.
The logic description area 34A in the screen G2A is
A relatively large range is set at the center of A. In FIG. 6, the logic description area 34B in the screen G2B is set in a relatively small range above the screen G2A.

As shown in FIGS. 5 and 6, the controller 1
The size and arrangement of rectangular symbols for defining the logic description areas 34A and 34B can be arbitrarily specified.

Therefore, by providing a rectangular symbol part that defines the logic description area 34, the coordinates of the rectangle are obtained from the identifiers uniquely assigned to the various symbol parts Y2 to Y9 (see FIG. 4). The logic symbol parts Y2 to Y6 and the symbol parts Y7 to Y9 in the coordinates can be obtained.

As a result, the logic program of the controller 1 can be automatically generated using the free format and free layout screen G2 without any trouble as in the processing routine of FIG.

Next, the flowchart of FIG.
The operation of the simulation means 27 and the logic confirmation means 28 in FIG. 1 will be described with reference to FIGS.

In FIG. 8, the process value information A of the process input / output card comprises 48 bits (0 to 47).
It includes a data portion Da of 32 bits (0 to 31) and a control flag portion FL of 46 bits (32 to 47).

The eight bits of the control flag section F are divided into a selection bit F1 and an unreliable bit F for each bit.
2, settling mode F3, simulation mode F4, hold mode F5, adjustment mode F6, output stop mode F
7 and a card failure (card loss) bit F8 are respectively assigned.

Of the eight bits, the hold mode F5, the adjustment mode F6, the output stop mode F7, and the card failure (card dropout) bit F8 are used as process output data.

FIG. 9 shows each of the bits F1 to F1 in the control flag section F.
This shows the signal processing state of the process input / output card when F8 is set (ON). First, with reference to the processing routine of FIG. 7, an operation of identifying an output signal from a specific input signal sequentially using the connection of the logic symbol components on the screen G2 will be described.

In FIG. 7, first, a symbol of the process input / output card is selected, a specific input signal is designated (step S11), and the control flag section F of the designated input signal is designated.
Is turned on as shown in FIG. 9 (step S12).

Subsequently, in the logic analysis, when the selection bit F1 is input data of ON, the selection bit of the control flag portion of the output data of the logic symbol component is also turned ON (step S13). The above operation is repeated until the process input / output I / F signal at the boundary of the logic description area 34 of the controller 1 is reached (step S14).

Finally, an output signal related to a specific input signal is obtained (step S15). Here, a data value is specifically set to a specific input signal, and the logic symbol component is executed (simulated) on the program creation support device 2 by the set value. At the time of executing this simulation, the settling mode F3 and the simulation mode F4 of the control flag section F of each input data (see FIG. 8)
Is used.

Here, when the settling mode F3 is set, as shown in FIG. 9, the data of the input signal is analog-related logic having a time element (for example, differentiation, integration,
In the execution of the logic of the delay time element, the simulation is performed ignoring the time element.

Thus, the validity of the stable logic state can be examined. In addition, when the simulation mode F4 is set, the validity of the logic can be examined by executing the logic including the temporal element.

Next, a description will be given of the operation of checking the range of logic influence on the failure or omission of the process input / output card. Here, a flowchart is not particularly shown,
The difference is that the unreliable bit F2 in the control flag unit F is used instead of the selection bit F1 described above (see FIG. 7).

First, an input signal assigned (assigned) to a failed or dropped process input / output card is extracted, and the unreliable bit F2 of the control flag section F of the corresponding input signal is turned on (see FIG. 9). . In addition, the unreliable bit of the logic symbol component to which this input signal is input is also O
Set to N.

Subsequently, the logic symbol components to which the output signals of the logic symbol components whose unreliable bits are turned on are inputted are sequentially obtained until the output is set to a signal to be output to the outside of the logic.

Further, by changing the color of the extracted logic symbol components, output signals, and signal lines between the logic symbol components (for example, changing the color to yellow), the abnormal logic and the locations of the input / output points are visualized. I do.

Thus, the logic description area 34 is set (step S1), and the logic symbol parts Y2 to Y
6 is used for generating a logic program (step S4), and the result of extracting other symbol parts (step S3) is used for generating an I / O definition of a controller (step S5). By performing the simulation (steps S11 to S15) and visualizing the results, the following advantages can be obtained.

That is, since the logic design drawing of the controller 1 and the logic language drawing are configured on the same screen G2, it is not necessary to repeatedly input design information for each drawing and the number of drawings required for program creation is reduced. Significant reductions simplify drawing management and revision management.

Further, since the size of the logic description area is variable according to the complexity of the logic, the area for describing information other than the logic is also variable, and there is no limit to the description form on the screen G2, and the degree of freedom is reduced. Expanding.

Further, since the validity of the logic is automatically confirmed by the simulation, a mistake in the logic design can be found at an early stage, and the reliability of the design logic is improved. In addition, even if the logic is changed, the work of confirming the validity of the changed logic is automatically performed, so that the time for logic design can be reduced.

Further, since the influence range of the failure of the process input / output card is automatically confirmed by simulation, even if the logic is changed, the work of checking the influence range by the changed logic is automatically performed, and the maintenance is performed. Work time can be reduced.

Further, since an output signal related to a specific input signal is automatically extracted from the screen G2, even if the logic is changed, the output signal is automatically extracted and the maintenance work time is reduced. can do.

Further, since the data is set from the control logic screen G2, the relationship with the logic can be easily recognized.

Embodiment 2 FIG. In the first embodiment, a case has been described in which an output signal related to a specific input signal is automatically extracted from the screen G2. However, an input signal related to a specific output signal is automatically acquired. It may be.

In the second embodiment of the present invention, simulation means 27 includes output signal designating means for designating a specific output signal, and logic checking means 28 receives input signal for acquiring an input signal related to the specific output signal. Including signal acquisition means. Further, the display means 20 is provided with the logic confirmation means 2.
8 to display the result of the input signal relating to a specific output signal by the input signal acquisition means.

Next, an operation of automatically acquiring an input signal related to a specified specific output signal according to the second embodiment of the present invention will be described with reference to a flowchart of FIG. First, a symbol of the process input / output card is selected on the screen G2, a specific output signal is specified (step S21), and the selection bit F1 of the control flag section F of the specified output signal is turned on (step S22). .

Next, when the selection bit F1 is the output data of ON, the selection bit of the control flag of the input data of the logic symbol part is also turned ON (step S23). The above operations are repeated until the process input / output I / F signal symbol at the boundary of the logic description area 34 of the controller 1 is reached (step S24).

Finally, an input signal related to a specific output signal is obtained based on the result of the repetition processing of step S24 (step S25). From the output signal specified in this way and the input signal acquired in connection with this, it is possible to examine the validity of the logic connection.

Further, it is possible to automatically confirm by simulation which input signal caused the abnormality of a specific output signal. Therefore, even if the logic is changed,
The cause confirmation work and the like based on the changed logic are automatically performed, and the maintenance work time can be reduced.

[0107]

As described above, according to the present invention, a logic including a process control logic and a sequence logic is designed for a controller including a digital control device for the purpose of process control, and the logic is executed by the controller. In the digital control device program creation support device that creates a program and performs logic monitoring, parameter adjustment and change as maintenance work,
Display means for displaying a screen containing various symbols created when designing logic, and input of free format and free layout specifications for the screen,
Input means for inputting at least various symbols;
A communication means for communicating with the controller is provided, and the I / F of the design, creation, and maintenance work is performed based on a common screen, so that drawing management and revision management are simplified, and controller design There is an effect that a program creation support device for a digital control device that achieves efficiency, eliminates duplication of drawing information, reduces the number of creation steps, and achieves a smooth transition from design to maintenance.

Further, according to the present invention, in the design, creation and maintenance work, there is provided extraction means for extracting various symbols from the logic description area of the controller, and the input means sets the logic description area on the screen. Means and various symbols include logic symbol parts in the logic description area, so controller design efficiency, elimination of duplication of drawing information, reduction of man-hours, and transition from design to maintenance Thus, there is an effect that a program creation support device for a digital control device that realizes a smooth transition is obtained.

Further, according to the present invention, the logic description area is defined by rectangular symbols, and the size and arrangement of the rectangular symbols are arbitrarily set via the area setting means, so that the logic complexity is increased. Since the logic description area is made variable in accordance with the above, there is no restriction on the description form on the screen, and there is an effect that a program creation support device for a digital control device that realizes efficient controller design is obtained.

Further, according to the present invention, there is provided simulation means for executing functions of various symbols using data values inputted from the input means, and the input means comprises data value setting means for arbitrarily setting data values. In addition, the validity of the logic is automatically checked, so that the reliability of the design logic is improved, and the design time when changing the logic can be shortened. Thus, there is an effect that a program creation support device for a digital control device that realizes a smooth transition is obtained.

Further, according to the present invention, there is provided a logic confirmation means for confirming the validity of the logic on the screen based on the execution result of the simulation means, and the display means displays the confirmation result of the logic confirmation means in the screen. Since the display is performed, there is an effect that a program creation support device for a digital control device that achieves efficient controller design and smooth transition from design to maintenance can be obtained.

Further, according to the present invention, the simulation means includes input signal designating means for designating a specific input signal, and the logic checking means obtains an output signal related to the specific input signal. Including, the display means, the output signal acquisition means to display the associated result of the output signal with respect to a specific input signal, thereby automatically confirm the range of influence when the logic change,
The maintenance work time can be shortened, and there is an effect that a program creation support device for a digital control device can be obtained in which the efficiency of controller design and the smooth transition from design to maintenance are realized.

Further, according to the present invention, the logic confirmation means automatically confirms the range of influence of the logic on the failure and omission of the process input / output card attached to / detached from the controller, thereby shortening the maintenance work time. Can,
This has the effect of providing a program creation support device for a digital control device that achieves efficient controller design and a smooth transition from design to maintenance.

Further, according to the present invention, the simulation means includes the output signal designating means for designating a specific output signal, and the logic checking means obtains the input signal related to the specific output signal. The display means displays the related result of the input signal with respect to the specific output signal in the input signal obtaining means, thereby automatically confirming the influence range when the process input / output card fails and the logic is changed. Thus, the maintenance work time can be shortened, and there is an effect that a program creation support device for a digital control device can be obtained in which the efficiency of controller design and the smooth transition from design to maintenance are realized.

According to the present invention, in the design, creation and maintenance work, the function of each symbol is extracted using the data value input from the input means and the extraction means for extracting various symbols from the logic description area of the controller. Simulation means for executing, and logic confirmation means for confirming the validity of the logic on the screen based on the execution result of the simulation means, input means, area setting means for setting a logic description area on the screen, and data Data value setting means for arbitrarily setting a value, wherein the display means displays the confirmation result of the logic confirmation means on a screen, thereby automatically controlling the influence range when the process input / output card fails and the logic is changed. , Simplified drawing management and revision management, and more efficient controller design Duplicate elimination of input work drawing information, reduce programming work, as well, the effect of programming support device of the digital control device which realizes a smooth transition to the maintenance from the design is obtained.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a schematic configuration of a first embodiment of the present invention.

FIG. 2 is an explanatory diagram schematically showing an example of a screen of a design drawing displayed according to the first embodiment of the present invention.

FIG. 3 is a flowchart showing an operation of automatically creating a logic program according to the first embodiment of the present invention.

FIG. 4 is an explanatory diagram specifically showing one example of a screen of a design drawing displayed according to the first embodiment of the present invention;

FIG. 5 is an explanatory diagram showing a logic description area variably set according to the first embodiment of the present invention;

FIG. 6 is an explanatory diagram showing a logic description area variably set according to the first embodiment of the present invention;

FIG. 7 is a flowchart showing an operation of acquiring an output signal related to an input signal according to the first embodiment of the present invention.

8 is an explanatory diagram showing a bit configuration of a control flag of process value information used for the operation in FIG. 7;

9 is an explanatory diagram showing the relationship between each bit value of a control flag in FIG. 8 and the operation in FIG. 7;

FIG. 10 is a flowchart showing an operation of acquiring an input signal related to an output signal according to Embodiment 2 of the present invention;

FIG. 11 is an explanatory diagram schematically showing an example of a screen of a logic drawing displayed by a program creation support device of a conventional digital control device.

[Explanation of symbols]

1 controller, 2 program creation support devices, 20
Display device, 21 key input device, 21a mouse, 2
5 extraction means, 27 simulation means, 28 logic confirmation means, 29 communication means, 34, 34A, 34
B Logic description area, G2, G2A, G2B screen, X1, X3, X5 Process input card, Z1, Z
3, Z5, Z7 Process output card, X2, X4, X
6, Z2, Z4, Z6, Z8 I / F signals, Y2 to Y6
Logic symbol parts, Y7 to Y9 symbol parts,
S11 input signal specifying means, S15 output signal obtaining means, S21 output signal specifying means, S25 input signal obtaining means.

Claims (9)

[Claims] 1. A logic including a process control logic and a sequence logic is designed for a controller including a digital control device for the purpose of process control, and a program for causing the controller to execute the logic is created. Monitoring, parameter adjustment and change of maintenance work in a digital control device program creation support device, a display means for displaying a screen including various symbols created at the time of the logic design, free format and Input means for inputting the specifications of the free layout, at least inputting the various symbols, and communication means for communicating with the controller, the design, creation and maintenance work based on the screen Characterized by doing Program creation support device for digital control devices. 2. In the design, creation and maintenance work, there is provided extraction means for extracting the various symbols from a logic description area of the controller, wherein the input means sets the logic description area on the screen. 2. The apparatus according to claim 1, wherein the various symbols include logic symbol parts in the logic description area. 3. The logic description area is defined by a rectangular symbol, and the size and arrangement of the rectangular symbol are arbitrarily set via the area setting means. A program creation support device for the digital control device described in the above. 4. A simulation device for executing functions of the various symbols by using data values input from the input device, wherein the input device includes a data value setting device for arbitrarily setting the data values. 2. The program creation support device for a digital control device according to claim 1, wherein: 5. A logic checking means for checking the validity of the logic on the screen based on an execution result of the simulation means, wherein the display means displays the checking result of the logic checking means in the screen. 5. The program creation support device for a digital control device according to claim 4, wherein the display is displayed. 6. The simulation means includes input signal designating means for designating a specific input signal; the logic checking means includes output signal acquiring means for acquiring an output signal related to the specific input signal; The apparatus according to claim 5, wherein the display unit displays a result of the output signal corresponding to the specific input signal in the output signal acquisition unit. 7. The digital control device according to claim 6, wherein the logic confirmation unit confirms a range of influence of logic on a failure and a dropout of a process input / output card attached to / detached from the controller. Support equipment. 8. The simulation means includes output signal designating means for designating a specific output signal; the logic checking means includes input signal acquiring means for acquiring an input signal related to the specific output signal; 6. The apparatus according to claim 5, wherein the display unit displays a result of the input signal acquisition unit relating the input signal to the specific output signal. 9. In the design, creation and maintenance work, an extracting means for extracting the various symbols from a logic description area of the controller, and a function of the various symbols is executed using a data value inputted from the input means. Simulation means for performing, and logic confirmation means for confirming the validity of the logic on the screen based on the execution result of the simulation means, wherein the input means sets the logic description area on the screen 2. The apparatus according to claim 1, further comprising: a setting unit, and a data value setting unit configured to arbitrarily set the data value, wherein the display unit displays a confirmation result of the logic confirmation unit on the screen. 3. Program creation support device for digital control devices.