JP5687563B2 - Plant control logic design support apparatus, program, and plant control logic design support method - Google Patents

Description

  Embodiments of the present invention relate to, for example, a plant control logic design support apparatus, a program, and a plant control logic design support method.

  Design and manufacture of software called control logic (hereinafter referred to as control logic or control logic diagram) for controlling plant control equipment such as pumps and valves in plant control devices that control power plants and chemical plants -There is a plant control logic design support device as a device for maintenance.

  In recent plant control logic design support apparatuses, CAD (Computer Aided Design) has been introduced, and it has become common to design, manufacture, and maintain control logic using CAD.

  With the introduction of CAD, it has become common to print out a control logic diagram drawn using CAD as it is and use it as a document for the software of the plant control device. For this reason, the control logic has been managed in units of sheets so as to be convenient for printing.

  The control logic designed and manufactured using such a plant control logic design support device is converted into an executable file that can be executed by the plant control device main body called compilation, and then downloaded to the plant control device. The

  However, in such a conventional plant control logic design support device, the range described in the control logic diagram printed out from the plant control logic design support device is limited to the software of control logic that is to be executed and processed by the plant control device. Generally limited to a range.

  This can be said to be natural because the plant control logic design support device is designed, manufactured, and maintained for the software of control logic to be executed by the plant control device.

  On the other hand, from a broad perspective of a plant control system, the components for controlling the plant are not only control logic software, but also plant control equipment such as pumps, fans, valves, and temperature, pressure, flow rate, etc. Field equipment such as various sensors is also an important component.

Further, an interface connecting these field devices and the plant control device is also an important component from the viewpoint of a plant control system. In other words, the plant control system functions only when software called control logic and hardware called field equipment are combined.
By designing software information and hardware information expressed in separate documents on the same CAD sheet, the design and maintainability of the interface part between the control logic and the field device are improved. There is technology.

JP 05-265734 A

  Conventionally, in order to draw a symbol related to software (illustration information) and a symbol related to hardware on the same CAD sheet and download the data of the generated CAD sheet to the plant control device, it is necessary to extract only the software information. There is a problem that this software information extraction requires complicated processing.

  In addition, in the conventional case, whether the connection state between symbols of hardware and software drawn on a CAD sheet is appropriate can be determined even by a new operator by examining the hardware name and the contents of the software control logic. Although it can be determined, it is necessary to determine whether the connection state between each other is appropriate considering the combination of the control logic specific to the hardware to be controlled and the control logic of the software that controls the hardware. Requires experience and knowledge.

  In addition, software control logic includes basic condition signals (hereinafter referred to as “core conditions”) for hardware to be controlled by software, such as “operation commands” and “stop commands” for the hardware to be controlled. ) And other condition signals that are not inherently related to hardware control, such as “electrical failure” and “during maintenance” (hereinafter referred to as “incidental conditions”). However, since all these conditions are mixed in the same CAD sheet and the signals are called, there is a case where an error in the condition signal is caused.

  In general, hardware to be controlled for industrial use is broadly classified into rotating equipment such as pumps and fans and valves. There are various types of valves such as electric valves, solenoid valves, piston valves, and control valves. There are various types of signals that should be input by the control device. Handling hardware information that is comprehensively equipped with this wide range of signals results in input of unnecessary interface information, which makes maintenance and change management complicated. In addition, it is conceivable that a human error may occur in which a symbol indicating hardware information and a symbol indicating software are incorrectly combined and designed.

  The problem to be solved by the present invention is that not only the software instruction word symbol of plant control logic but also all the devices to be controlled can be covered when designing the plant control logic by arranging the objects on the CAD screen. To provide a plant control logic design support device, a program, and a plant control logic design support method capable of improving the productivity and maintainability of a plant control system by setting a common hardware instruction word symbol .

The plant design support apparatus according to the embodiment includes a hardware symbol storage unit, a software symbol storage unit, a drawing unit , a CAD data storage unit, and a determination unit . The hardware symbol storage unit stores hardware symbols for displaying the operation specifications of the hardware to be controlled in the form of symbols. The software symbol storage unit stores software symbols for displaying control logic for controlling the hardware in the form of symbols. The drawing unit displays a screen for creating a CAD-format drawing, and the hardware symbol storage unit and the software symbol storage unit respectively correspond to hardware corresponding to the arrangement and connection of the symbol on the screen. The symbols and software symbols are read out, and the symbols are arranged and connected according to the operation, and CAD data representing the entire control configuration to which the symbols are connected is generated. The CAD data storage unit can store the CAD data. The determination unit determines the appropriateness of the connected hardware symbol and software symbol in the CAD data created by the drawing unit based on a predetermined determination condition, and determines the CAD data determined to be appropriate If the data is stored in the CAD data storage unit and determined to be inappropriate, a notification is made that an error exists in the CAD data.

It is a figure which shows schematic structure of the plant control logic design support apparatus of 1st Embodiment. It is a figure which shows an example of the dialogue screen which performs hardware registration. It is a figure which shows the example of a drawing of the CAD sheet | seat which comprises a rotation apparatus control logic. It is a figure which shows the example of a drawing of the CAD sheet | seat which comprises an electric valve control logic. It is a figure which shows the example of a drawing of the CAD sheet | seat which comprises a solenoid valve control logic. It is a figure which shows the structure of the plant control logic design support apparatus of 2nd Embodiment. It is a figure which shows the content (determination condition) of the determination condition memory | storage part.

Hereinafter, embodiments will be described in detail with reference to the drawings.
(First embodiment)
FIG. 1 is a diagram illustrating a configuration of a plant control logic design support apparatus according to the first embodiment.
The plant control logic design support device of this embodiment is realized by a computer having an input device such as a CPU, a memory, a hard disk device, a mouse and a keyboard, a display device such as a monitor, and a communication interface for communicating with an external device. Is done.

  The basic functions of this plant control logic design support apparatus are realized by the CPU executing the process of the plant control logic design support program installed in the hard disk device. The plant control logic design support program is a type of Computer Aided Design (hereinafter referred to as “CAD”) software. By starting this program, the computer functions as a plant control logic design support device having the configuration shown in FIG. To do.

  That is, the plant control logic design support apparatus of this embodiment includes a software command word symbol storage unit 11, a hardware command word symbol storage unit 12, a control logic drawing unit 13, and hardware registration, as shown in FIG. Section 14, CAD data storage section 15, and compile & write section 16.

  The software instruction word symbol storage unit 11 stores software instruction word symbols having a control logic function for controlling hardware, which is original software. Specifically, the software instruction word symbol represents control logic for controlling hardware such as a motor-operated valve, a solenoid valve, and a rotating device. That is, the software instruction word symbol storage unit 11 stores software symbols for displaying control logic for controlling hardware in the form of symbols.

  The hardware instruction word symbol storage unit 12 stores hardware instruction word symbols having interface signals of hardware and control logic unique to the hardware as attribute information. That is, the hardware command word symbol storage unit 12 stores hardware symbols for displaying the operation specifications of the hardware to be controlled in the form of symbols.

  The control logic drawing unit 13 displays a sheet for drawing control logic by the CAD function (hereinafter referred to as “CAD sheet”) on the screen of the display device 17, and a hardware command word symbol and Alternatively, when an arrangement or connection operation is performed on the software instruction word symbol, the symbol is read from the software instruction word symbol storage unit 11 and the hardware instruction word symbol storage unit 12, respectively, and the read symbols are combined and arranged on the CAD sheet. By connecting (connecting) with a connection line, the screen is drawn so as to express that the software and hardware are interface-connected.

  That is, the control logic drawing unit 13 displays a screen (see FIGS. 3 to 5) for creating a CAD-format drawing, and the placement and connection operation of the symbol is performed on the screen, so that the hardware command is displayed. The corresponding hardware symbols and software symbols are read from the word symbol storage unit 12 and the software instruction word symbol storage unit 11, respectively, and the symbols are arranged and connected according to the operation, and the entire control configuration to which the symbols are connected is expressed. Functions as a drawing unit for generating CAD data to be generated.

  When the hardware instruction word symbol and the software instruction word symbol are connected with a signal line during the CAD sheet generation process, the control logic drawing unit 13 is set in the hardware instruction word symbol storage unit 12. When the operation specification of the hardware instruction word symbol conforms to the control logic of the software instruction word symbol, the signal line between the hardware instruction word symbol and the software instruction word symbol is connected.

  The hardware registration unit 14 displays the hardware registration screen 20 shown in FIG. 2 on the display device 17, and the hardware type such as a pump, a fan, or a valve is input or selected by the operator on the input device 10 (object such as a cursor). The information attached to the hardware-specific logic drawn in the hardware instruction word symbol is registered in the hardware instruction word symbol storage unit 12.

  As shown in FIG. 2, the hardware registration screen 20 includes a device type column 21, a plant control device input signal column 22, a logic diagram column 23, a plant control device output signal column 24, and a confirmation. A button 25, a cancel button 26, and the like are provided.

  In the device type column 21, for example, device names such as an electric valve, a solenoid valve, and a rotating device are input. In the input signal column 22 from the plant control device, an ID that is an identifier of the input signal from the plant control device 2 such as D00001 and D00002 is input.

  In the logic diagram column 23, a logic diagram is drawn in which the object parts are combined and connected to each other by the operation of the object parts. In the field 24 of the output signal to the plant control device, an ID that is an identifier of the output signal to the plant control device 2, such as DI0004, DI0005, DI0006, DI0007, is input.

  The confirmation button 25 is an instruction button for confirming the contents of the input data and the drawing data, and is designated by a click operation by the operator. The cancel button 26 is a button for canceling the contents of input data and drawing data without saving, and is instructed by a click operation by the operator.

  After displaying the hardware registration screen 20 on the display device 17, the operator operates the input device 10 to select the hardware type from the hardware registration screen 20, and the input signal from the plant control device 2 is “open / open”. A separate signal name indicating whether the command is "close command" or "run / stop command" and whether the output signal to the plant control device 2 is "fully open / fully closed" or "running / stopped" Information is registered in the hardware instruction word symbol storage unit 12.

  Also, display the unique control logic drawn on the hardware instruction word symbol, and if there is a special specification in the control logic of the hardware alone, enter the contents as attached information as a hardware instruction word. Register in the symbol storage unit 12. The attached information is, for example, a condition that is not originally related to the hardware being controlled. The conditions are “fully open”, “fully closed”, etc. if the hardware is a valve, for example, and if it is a pump, the hardware is “running”, “stopped”, “during electrical failure”, etc. Information indicating the status of the wear (status information).

  The compiling & writing unit 16 can read the CAD data (data of the CAD sheet 31 illustrated in FIG. 3) stored in the CAD data storage unit 15 and execute the software instruction word and the hardware instruction word in the plant control device 2. The program is converted into an execution file, and the converted execution file is downloaded to the plant control device 2. That is, the compile & write unit 16 converts the CAD data stored in the CAD data storage unit 15 into an executable file that can be executed by the plant control device 2, and outputs the execution file to the plant control device 2.

  Since the hardware instruction word symbol is drawn by the same method as the software instruction word symbol, it can be operated as a simulator only by downloading to the plant control device 2.

  The CAD data storage unit 15 stores CAD data generated by the control logic drawing unit 13 in units of sheets. That is, CAD data can be stored in the CAD data storage unit 15.

  The compiling & writing unit 16 converts the CAD data stored in the CAD data storage unit 5 into an executable file that can be executed by the plant control apparatus 2, and the converted execution file is requested by the plant control apparatus 2 according to a request from the plant control apparatus 2. Download (send) to 2.

  Hereinafter, for the sake of simplicity, software for controlling plant equipment such as control logic or a control logic diagram is simply referred to as “software”, and includes plant control equipment such as pumps and valves, and these field equipment. Including the interface connecting the plant controller, it is simply called “hardware”.

  In this embodiment, hardware-specific logic is set with the same symbols as software symbols, and these symbols can be drawn on one CAD sheet, and the symbols are directly connected to each other, thereby connecting the incidental information. Allows expression.

Hereinafter, the operation of the plant control logic design support apparatus of the first embodiment will be described.
In the case of the first embodiment, the software instruction word symbol storage unit 11 stores many software instruction word symbols necessary for the control logic drawing unit 13. The software instruction word symbol represents the control logic for controlling hardware such as pumps and valves as in the past, and when the valve is stopped, the valve stop command is not output to the hardware. Control logic, such as locking, is stored inside the symbol.

  The hardware instruction word symbol storage unit 12 stores a hardware instruction word registered by a hardware information registration unit 14 described later.

  The control logic drawing unit 13 has a CAD function capable of drawing control logic by arranging object parts on the CAD sheet 2, and software instruction word symbols and hardware instruction words on the CAD sheet by the CAD function. A control logic including symbols is drawn and stored in the CAD data storage unit 15.

  An example of the CAD sheet on which the control logic is drawn by the control logic drawing unit 13 is shown in FIG.

  For example, when the hardware is a rotating device that uses a motor with a voltage source in a specific range as a power source, the control logic drawing unit 13 determines the hardware instruction word when the contact signal type of the rotating device matches the control logic. Connect the signal line between the symbol and the software instruction word symbol.

  The CAD sheet 31 in the example shown in FIG. 3 is an example in which the control logic of the rotating device is drawn, and the signal line C1 (A rotating device start command, A rotating device stop command, A rotating device forced stop, etc.) input from the left side. ), A software instruction word symbol A1 representing an operation such as logical sum or logical product, and a hardware instruction word symbol B1 representing the same operation as the software instruction word but represented by a different frame line from the software instruction word symbol The command logic symbols A1 and B1 are connected by the signal line C2 to configure the control logic of the rotating device, and the signal line C3 is arranged to output a signal indicating the calculation result of the control logic to the right side of the seat It was drawn.

  Although it may seem contradictory at first glance to express hardware operating specifications using software command symbols, for plant equipment such as pumps and valves, start command / stop command, open command / close command The operation command signal from the plant control device 2 as a command is considered as an input signal of hardware, and a signal indicating the state of the device such as an activated state / stopped state, a fully opened state / fully closed state, an electrical failure or maintenance is received from the hardware. It is understood that the hardware operation specifications can be expressed in the same form as the software control logic. The operation specifications of plant control equipment such as pumps and valves can also be expressed by command word symbols used in control logic such as flip-flops.

  Further, as apparent from the CAD sheet 31 of FIG. 3, it is expressed so that a part of the output signal of the hardware instruction word symbol is turned back to the input signal of the software instruction word symbol.

  This is called another sheet when a hardware incidental condition such as whether the controlled hardware is under electrical failure or maintenance is added to a part of the logical operation within the software instruction symbol. It shows that it can be expressed by one sheet without matching.

  In this way, from the control logic that has been expressed only by the software signal call so far, the software and hardware signal call is expressed by a single sheet in the same form.

  In other words, it can be said that the interface between software and hardware is expressed by one CAD sheet without calling another document or sheet.

  Furthermore, the signal input to the software instruction word symbol from the left side of the sheet is only the hardware core condition, and the hardware incidental condition is directly connected from the hardware instruction word symbol to the software instruction word symbol. Thus, the hardware core condition and the incidental signal classification are clearly distinguished.

  When the hardware is, for example, an electric valve or the like that uses an electric motor having a voltage source in a specific range as a power source, for example, in the process of drawing the CAD sheet 32 that constitutes the control logic including the electric valve as shown in FIG. The control logic drawing unit 13 connects the signal line C2 between the hardware command word symbol B2 and the software command word symbol A2 when the contact signal type of the motor-operated valve matches the control logic.

  In addition, when the hardware is, for example, an electromagnetic valve that is one of valve devices that open and close by operating air with the motor-operated valve, as shown in FIG. 5, a CAD sheet that constitutes a control logic including the electromagnetic valve. In the process of drawing 33, the control logic drawing unit 13 sets the signal line C2 between the hardware command word symbol B3 and the software command word symbol A3 when the type of the contact signal of the solenoid valve matches the control logic. Connecting.

  The CAD sheet 32 of FIG. 4 and the CAD sheet 33 of FIG. 5 are drawn using software instruction word symbols A2 and A3 different from the CAD sheet 31 of the drawing example of the control logic of the rotating device shown in FIG. However, regarding the hardware instruction word symbols, the hardware instruction word symbols B2 and B3 of the CAD sheet 32 in FIG. 4 and the CAD sheet 33 in FIG. It is drawn.

  This indicates that, if the number of input signals and output signals from the plant control device 2 are the same, it is possible to connect using different hardware command word symbols with different software command words.

  The hardware information registration unit 14 selects a hardware type such as a pump or a valve for the hardware command word symbol from the data of the CAD sheet 31 on which the control logic is drawn by the control logic drawing unit 13, and performs plant control. The meaning of the input from the apparatus and the output signal to the plant control apparatus 2 and information related to the hardware-specific control logic are written in the hardware instruction word symbol as auxiliary information.

  As described above, according to the first embodiment, the plant control logic design support apparatus can draw software and hardware information on one sheet by CAD. In addition, by selecting information about hardware from a plurality of hardware types, a wide variety of hardware types can be expressed as one hardware instruction word symbol.

Further, the connection between the software instruction word symbol and the hardware instruction word symbol is arranged in the same CAD sheet so that the symbols are connected to each other, that is, the signal indicating the hardware core condition and the signal indicating the incidental condition are distinguished. The signal indicating the hardware core condition should be focused on the signal from the left side of the seat, and the occurrence of a connection error that erroneously calls the signal indicating the incidental condition is eliminated. Can do.
(Second Embodiment)
FIG. 6 is a diagram illustrating a configuration of a plant control logic design support apparatus according to the second embodiment. In the description of the second embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.

  As shown in FIG. 6, the plant control logic design support apparatus of the second embodiment includes a determination condition storage unit 18 and a hardware determination unit 19 in addition to the configuration of the first embodiment shown in FIG. doing.

  As shown in FIG. 7, the determination condition storage unit 18 is set with a determination condition indicating whether each combination of a software instruction word symbol and a hardware instruction word symbol is correct. In this example, for example, the combination of the rotating device control software and the rotating device hardware is set to “◯”, that is, the combination is possible. The combination of the motor-operated valve control software and the rotating equipment hardware is set to “x”, that is, the combination is impossible.

  The hardware determination unit 19 determines the appropriateness of the connected hardware symbol and software symbol in the CAD data created by the control logic drawing unit 13 based on a predetermined determination condition, and determines that it is appropriate. The CAD data stored in the CAD data storage unit 15 functions as a determination unit for notifying that there is an error in the CAD data when determined to be inappropriate.

  That is, the hardware determination unit 19 includes, among the CAD data created by the control logic drawing unit 13, the type of hardware to be controlled registered in the software symbol and the hardware registered in the hardware symbol storage unit. It is determined whether or not the type is a correct combination.

  More specifically, the hardware determination unit 19 refers to the determination condition in the determination condition storage unit 18 to determine whether an inappropriate combination of the software instruction word symbol and the hardware instruction word symbol is appropriate or inappropriate. When an inappropriate combination is detected, the contents of the inappropriate combination are output to the display device 17 to notify the operator.

  As a notification method, a message including the names of software instruction symbol and hardware instruction symbol in an inappropriate combination may be output. For example, the color of the connection point between symbols on the sheet is changed to, for example, red. You may specify it.

  Subsequently, the operation of the plant control logic design support apparatus of the second embodiment will be described. Differences from the first embodiment will be described.

  In the second embodiment, the hardware determination unit 19 takes in the CAD data created by the control logic drawing unit 13 and registers the hardware to be controlled and the hardware command word symbol registered in the software command word symbol. 7 is determined using the data in the determination storage unit 18 illustrated in FIG. 7 and the CAD data is stored in the CAD data storage unit 15 according to the determination result. Not stored.

  Here, for example, if the control target registered in the software instruction word symbol and the hardware selected by the hardware type in the hardware registration screen 20 illustrated in FIG. The data is transferred to the CAD data storage unit 15 as it is and stored.

  On the other hand, if the software instruction word symbol and the hardware instruction word symbol are different combinations, that is, an inappropriate combination, an error message is output to the display device 17, the error content is notified to the operator, and the CAD data storage unit 15 CAD data is not passed to (not stored).

  As described above, according to the second embodiment, plant control is performed by notifying the operator that the drawing data is read and the combination of hardware and software instruction word symbols is different before the CAD data is saved. The operator can be made aware before writing inappropriate control logic to the plant control device 2.

  As described above, according to the first and second embodiments described above, the compile-and-write unit 16 uses the hardware information registered as the attribute information in the hardware instruction word symbol and has an inappropriate combination with the software information. As a result, the input / output signal is not mistaken for hardware at the design stage of the plant control device 2. In addition, there is no need to return work after the design to eliminate mistakes.

  Furthermore, since it can be configured as a control logic including hardware information on the CAD sheet, the productivity and maintainability of the control logic can be improved.

  In other words, not only the software command symbol called plant control logic but also the common hardware command symbol that can cover all the devices to be controlled will improve the productivity and maintainability of the plant control system. Can do.

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

  Further, each component shown in the above embodiment may be realized by a program installed in a storage such as a hard disk device of a computer, and the program is stored in a computer-readable electronic medium: electronic media, The computer may realize the functions of the present invention by causing a computer to read a program from an electronic medium. Examples of the electronic medium include a recording medium such as a CD-ROM, flash memory, and removable media. Further, the configuration may be realized by distributing and storing components in different computers connected via a network, and communicating between computers in which the components are functioning.

  DESCRIPTION OF SYMBOLS 1 ... Plant control logic design support apparatus, 2 ... Plant control apparatus, 11 ... Software command word symbol memory | storage part, 12 ... Hardware command word symbol memory | storage part, 13 ... Control logic drawing part, 14 ... Hardware information registration part, 15 ... CAD data storage unit, 16 ... compile & write unit, 17 ... display device, 18 ... judgment condition storage unit, 19 ... hardware judgment unit.

Claims (7)

A hardware symbol storage unit in which hardware symbols for displaying operation specifications of hardware to be controlled in the form of symbols are stored;
A software symbol storage unit storing software symbols for displaying the control logic for controlling the hardware in the form of symbols;
A screen for creating a drawing in CAD format is displayed, and the corresponding hardware symbol and software symbol are respectively displayed from the hardware symbol storage unit and the software symbol storage unit according to the arrangement and connection of the symbol on the screen. A drawing unit that generates CAD data expressing the overall control configuration to which the symbol is connected, and arranging and connecting the symbol according to an operation ,
A CAD data storage unit capable of storing the CAD data;
Of the CAD data created by the drawing unit, the appropriateness of the connected hardware symbol and software symbol is determined based on a predetermined determination condition, and the CAD data determined to be appropriate is the CAD data storage unit A plant control logic design support apparatus comprising: a determination unit that notifies that there is an error in the CAD data when it is determined to be inappropriate . The determination unit
In the CAD data created by the drawing unit, is the correct combination of the type of hardware to be controlled registered in the software symbol and the type of hardware registered in the hardware symbol storage unit? The plant control logic design support apparatus according to claim 1, wherein: It further comprises a compiling and writing unit that converts the CAD data stored in the CAD data storage unit into an executable file that can be executed by a control device that controls the hardware, and outputs the executable file to the control device. The plant control logic design support apparatus according to claim 1, wherein The drawing section
The plant according to claim 1, wherein a signal line between the hardware symbol and the software symbol is connected when an operation specification of the hardware set in the hardware symbol matches the control logic. Control logic design support device. The drawing section
The hardware is a rotating device that uses a motor with a voltage source in a specific range as a power source, a motorized valve that uses a motor with a voltage source in a specific range as a power source, and a valve device that opens and closes by operating air with this motor operated valve 5. The plant control logic design support apparatus according to claim 4, wherein the signal line is connected when a contact signal type of the rotating device, the motor-operated valve, and the valve device matches the control logic. . In a program for operating a computer,
The computer,
A hardware symbol storage unit in which hardware symbols for displaying operation specifications of hardware to be controlled in the form of symbols are stored;
A software symbol storage unit storing software symbols for displaying the control logic for controlling the hardware in the form of symbols;
A screen for creating a drawing in CAD format is displayed, and the corresponding hardware symbol and software symbol are respectively displayed from the hardware symbol storage unit and the software symbol storage unit according to the arrangement and connection of the symbol on the screen. A drawing unit that generates CAD data expressing the overall control configuration to which the symbol is connected, and arranging and connecting the symbol according to an operation ;
A CAD data storage unit capable of storing the CAD data;
Of the CAD data created by the drawing unit, the appropriateness of the connected hardware symbol and software symbol is determined based on a predetermined determination condition, and the CAD data determined to be appropriate is the CAD data storage unit A program that functions as a determination unit that notifies that there is an error in the CAD data when it is determined to be inappropriate . Save the hardware symbol for displaying the operation specifications of the hardware to be controlled in the form of a symbol in the hardware symbol storage unit,
Storing a software symbol for displaying the control logic for controlling the hardware in the form of a symbol in a software symbol storage unit;
A screen for creating a drawing in CAD format is displayed, and the corresponding hardware symbol and software symbol are respectively displayed from the hardware symbol storage unit and the software symbol storage unit according to the arrangement and connection of the symbol on the screen. , Arrange and connect the symbol according to the operation, generate CAD data representing the entire control configuration to which the symbol is connected ,
In the created CAD data, the appropriateness of the connected hardware symbol and software symbol is determined based on a predetermined determination condition, and the CAD data determined to be appropriate is stored in the CAD data storage unit. A plant control logic design support method characterized by notifying that there is an error in the CAD data when it is determined as appropriate .

Images