JP6289751B2 - Program generating apparatus, program generating method, and program generating program - Google Patents

Description

  The present invention relates to a program generation device, a program generation method, and a program generation program. In particular, the present invention relates to a program generation device, a program generation method, and a program generation program that generate a control program executed by the control device.

In recent years, there is a control system in which a plurality of control devices perform control in cooperation. A control system design tool is used to design such a control system. The control system design tool automatically generates a control program that causes a computer to calculate a control device model that formulates the mechanism in the control device or the role of an electrical signal, and executes a simulation in a virtual space. By executing such a simulation, the control system design tool can execute the verification of the arrangement of the control device and the verification of the control program in advance without performing verification using an actual machine.
In Patent Document 1, simulation processing for simulating the operation of a control device is executed in a simulation device that simulates the control device. The simulation apparatus transfers data stored in the shared memory of the CPU board to another simulation apparatus via the communication interface at an arbitrary timing when the simulation calculation process starts or is being executed. Therefore, data consistency between simulation apparatuses is ensured.

In order to make it easier for the user to specify the input / output data for controlling the control target device and the communication data transferred between the control devices, variable names, that is, labels are defined. A name resolution function for converting a variable name into a device storing an actual value is realized. This name resolution function allows label programming to create and edit control programs using variable names. A device is a real address of a memory in which an actual value is stored.
Patent Document 2 discloses a variable solution method in which a communication device acts as an intermediary between control devices and takes a correspondence between a variable name and a device when communicating between the control devices. With the method of Patent Document 2, communication data can be transferred using variable names without increasing PLC (Programmable Logic Controller) resources.

JP 2008-27225 A JP 2010-97624 A

  However, a PLC that executes a control program implemented in a C language program can access a device that stores input / output data that is sent to and received from an input / output device by specifying a variable name and communication data that is transferred between control devices. Absent. In such a PLC, it is necessary to access a device by using a dedicated device access function that is different for each device type. For this reason, in such a PLC, data cannot be exchanged between the input / output device and the communication device only by taking correspondence between the variable name and the device in which the actual value is stored. In such a PLC, it is necessary to describe in the control program a process for calling a dedicated device access function in accordance with a device that reads and writes data, and there is a problem that the number of development steps increases.

Also, when considering the design of a control system by rearranging the arrangement or connection order of control devices while performing simulations with the control system design tool, change the device that stores communication data according to the change in the connection order of control devices. There is a need to. Therefore, since it is necessary to rewrite the control program every time the device is changed, the development man-hours are further increased.
In addition, control target devices connected to input / output devices have different connection destination devices for each control device. For this reason, there is a problem that a control program for device access including a device access function calling process cannot be automatically generated from the control system design tool.

  It is an object of the present invention to reduce the number of man-hours for developing a control program by automatically generating an access program for accessing a device in order to handle input / output information input / output in / from a control device.

The program generation device according to the present invention includes:
A control program generation unit for generating a control program executed by the control device;
An information extraction unit that extracts variable names representing input / output information including at least one of input information input to the control device and output information output from the control device and used in the control program When,
An assigning unit that assigns a device identifier for identifying a device in which the input / output information represented by the variable name is stored, to the variable name;
An access program generating unit for generating an access program for accessing the device using the variable name and the device identifier;
A program synthesis unit for synthesizing the control program and the access program;

  In the program generation device according to the present invention, a variable name representing input / output information including at least one of input information input to the control device and output information output from the control device, and used in the control program An information extraction unit that extracts a device identifier and assigns a device identifier that identifies a device that is a storage area from which I / O information is read or a storage area to which I / O information is written to a variable name Unit, an access program generation unit that generates an access program that accesses a device using a variable name and a device identifier, and a program synthesis unit that synthesizes the control program and the access program. Automatically generate access programs to handle input / output information Can be, it is possible to reduce the number of development steps of the control program.

1 is a block configuration diagram of a program generation device 100 according to Embodiment 1. FIG. FIG. 3 is a flowchart showing a program generation method in the program generation apparatus 100 according to the first embodiment. FIG. 3 is a diagram showing a control system model 1031 in the control system design unit 103 according to the first embodiment. The figure which shows extraction of the input-output information 203 in the information extraction part 105 which concerns on Embodiment 1. FIG. The figure which shows the relationship between the input / output information 203 and the device 230 in the information extraction part 105 which concerns on Embodiment 1. FIG. The figure which shows the synthetic | combination process of the control program 1041 and the access program 1083 by the program synthetic | combination part 110 which concerns on Embodiment 1. FIG. The block block diagram of the program generation apparatus 100a which concerns on Embodiment 2. FIG. The flowchart which shows a part of program generation process S100a of the program generation apparatus 100a which concerns on Embodiment 2. FIG. FIG. 10 is a block configuration diagram of a program generation device 100b according to a third embodiment. FIG. 10 is a flowchart showing a part of program generation processing S100b of the program generation device 100b according to the third embodiment. The block block diagram of the program generation apparatus 100c which concerns on Embodiment 4. FIG. FIG. 10 is a flowchart showing a part of program generation processing S100c of the program generation device 100c according to the fourth embodiment. The hardware block diagram of the program production | generation apparatus 100. FIG.

Embodiment 1 FIG.
*** Explanation of configuration ***
The program generation apparatus 100 according to the present embodiment includes a control system 300 that manufactures a product by controlling a production facility while each of a plurality of control apparatuses 200 connected via a network cooperates with another control apparatus 200. Used for design. The program generation device 100 is also referred to as a control system design device.
The control device 200 includes a power source for controlling production equipment such as a robot, a servo amplifier, and a processing machine in a factory, a PLC that executes a control program implemented by a C language program, an input device, an output device, a communication device, and the like. Are combined. The input device is a storage area of a memory corresponding to the input device. The output device is a storage area of a memory corresponding to the output device. The communication device is a storage area of a memory corresponding to the communication device.
The program generation device 100 is used when a user designs the control system 300. The model of the control device 200 is arranged and connected, and a control program is generated based on the result. Then, the program generation apparatus 100 verifies the operation of the control system 300 by executing a simulation of the generated control program in the virtual space.
The control device 200 and the program generation device 100 are connected via a network such as a USB (Universal Serial Bus) cable or Ethernet (registered trademark).

An outline of the program generation device 100 will be described.
The program generation device 100 arranges a control device model in which the control contents of the control device 200 are modeled, defines input / output information between the arranged control device models, and designs a control system model. Input / output information between control device models is defined by variable names used in the control program. Then, the program generation device 100 extracts a variable name representing the input / output information of the control device model from the design information of the control system model, and assigns a device to the extracted variable name. When the variable name represents input information, a read source device that reads the input information represented by the variable name is assigned to the variable name. When the variable name represents output information, a write destination device to which the output information represented by the variable name is written is assigned to the variable name. The program generation apparatus 100 automatically generates an input / output device access program and a communication device access program based on the variable name and device allocation information. Then, the program generation apparatus 100 inserts the automatically generated device access program for input / output and the device access program for communication into the control program.

The block configuration of the program generation device 100 according to the present embodiment will be described with reference to FIG.
The program generation device 100 includes an input reception unit 101, a model storage unit 102, a control system design unit 103, a control program generation unit 104, an information extraction unit 105, an allocation unit 106, a management file generation unit 107, an access program generation unit 108, a program A synthesis unit 110, a program storage unit 111, and a communication processing unit 112 are provided. The access program generation unit 108 includes an input / output access program generation unit 1081 and a communication access program generation unit 1082.

  The input receiving unit 101 receives an input instruction that the user inputs to the program generation device 100 using the input device. The input device is a mouse, a keyboard, or the like. The input instruction includes an operation instruction for arranging the control device model 201 that models the control device 200, an operation instruction for connecting the control device models 201, a write instruction for writing the control program 1041 to the control device 200, and the like.

  The model storage unit 102 stores a control device model 201 that models the function of the control device 200. The model storage unit 102 stores data defining functions that are control contents of the control device 200 as the control device model 201.

  The control system design unit 103 designs the control system 300 based on an input instruction from the user, and generates a control system model 1031 in which the design contents of the control system 300 are modeled. The control system model 1031 is design information of the control system 300. The user selects the control device model 201 using the input receiving unit 101 and the control system design unit 103, arranges the selected control device model 201, connects the arranged control device models 201 to each other, and controls the control system. 300 designs are implemented.

  The control program generation unit 104 generates a control program 1041 that is executed by the control device 200. The control program generation unit 104 generates a control program 1041 for controlling the operation of the control device 200 in units of the control device 200 based on the control system model 1031 generated by the control system design unit 103.

The information extraction unit 105 is a variable name 202 representing input / output information 203 including at least one of input information 2031 input to the control device 200 and output information 2032 output from the control device 200, and is executed by the control program 1041. The variable name 202 to be used is extracted.
The information extraction unit 105 extracts a variable name 202 representing the input / output information 203 of the control device 200 based on the arrangement information of the control device model 201 arranged in the control system design unit 103 and the connection information between the control device models 201. To do. That is, the information extraction unit 105 extracts the variable name 202 representing the input / output information 203 of the control device 200 based on the control system model 1031 generated by the control system design unit 103.

As shown in FIGS. 3 and 4, the input / output information 203 of the control device 200 includes input information 2031 input to the control device 200 and output information 2032 output from the control device 200. Further, the variable name 202 of the input information 2031 is set as an input variable name 2021, and the variable name 202 of the output information 2032 is set as an output variable name 2022.
Further, the input / output information 203 of the control device 200 includes input / output data 2033 that is input or output by the control device 200 alone and communication data 2034 that is transferred between the control devices 200.
The information extraction unit 105 extracts the variable name 202 used in the control program 1041 generated by the control program generation unit 104 from the control system model 1031.

The assigning unit 106 assigns to the variable name 202 a device identifier 2301 that identifies the device 230 that is a storage area of the memory that stores the input / output information 203 represented by the variable name 202. The device 230 and the device identifier 2301 will be described later.
The assigning unit 106 assigns a device identifier 2301 to the variable name 202 representing the input / output information 203 based on an input instruction input from the user using the input receiving unit 101. For example, the allocation unit 106 displays the variable name 202 of the input / output information 203 extracted by the information extraction unit 105 on the display device, and the device identifier 2301 indicates the device name and device number to be allocated to the variable name 202 displayed by the user. Define as

  The management file generation unit 107 generates information in which the variable name 202 representing the input / output information 203 is associated with the device identifier 2301 as the management file 1071. The management file generation unit 107 generates the management file 1071 in the CSV format, for example.

  The access program generation unit 108 generates an access program 1083 for accessing the device 230 using the variable name 202 and the device identifier 2301. The access program generation unit 108 generates an access program 1083 using the variable name 202 and device identifier 2301 set in the management file 1071 and a device access function dedicated to the device 230 to be accessed.

The input / output access program generation unit 1081 generates, as the input / output access program 10833, the access program 1083 for the input / output data 2033 that is input or output by the control device 200 alone in the input / output information 203.
The input / output access program generation unit 1081 is based on the variable name 202 representing the input / output data 2033 in the input / output information 203 stored in the management file 1071, and the device name and device number assigned to the variable name 202. The input / output access program 10833 is generated. The input / output access program generation unit 1081 accesses an input / output device corresponding to the input / output data 2033 in the device 230. The input / output access program generation unit 1081 uses a dedicated function for generating the input / output access program 10833. The dedicated function is a dedicated device for reading the input / output data 2033 from the input device corresponding to the input / output data 2033 or writing the input / output data 2033 to the output device corresponding to the input / output data 2033. Is a function of The process of the input / output access program 10833 is a process of accessing an input / output device having a device identifier assigned to each variable name 202 of the input / output information 203 using a function dedicated to the corresponding input / output device.

The communication access program generation unit 1082 generates, as the communication access program 10834, the access program 1083 for the communication data 2034 transferred between the control devices 200 in the input / output information 203.
The communication access program generation unit 1082 performs communication based on the variable name 202 representing the communication data 2034 in the input / output information 203 stored in the management file 1071, and the device name and device number assigned to the variable name 202. Access program 10834 is generated. The communication access program generation unit 1082 uses a dedicated function for generating the communication access program 10834. The dedicated function is a function dedicated to the device for reading the communication data 2034 from the communication device corresponding to the communication data 2034 and writing the communication data 2034 to the communication device corresponding to the communication data 2034. The process of the communication access program 10834 is a process of accessing a communication device having a device identifier assigned for each variable name 202 of the input / output information 203 using a function dedicated to the device.

The program synthesis unit 110 synthesizes the control program 1041 and the access program 1083.
The program synthesis unit 110 inserts the access program 1083 automatically generated by the access program generation unit 108 into the control program 1041 automatically generated by the control program generation unit 104. As described above, the access program 1083 includes the input / output access program 10833 and the communication access program 10834.

  The program synthesis unit 110 extracts a portion corresponding to the input to the control device 200 from the access program 1083 and inserts it into the header portion of the control program 1041. Further, the program synthesis unit 110 extracts a portion corresponding to the output from the control device 200 from the access program 1083 and inserts it into the footer portion of the control program 1041.

The program storage unit 111 stores the control program 1041 in which the access program 1083 is inserted by the program synthesis unit 110.
The communication processing unit 112 receives an input instruction using the input receiving unit 101 from the user, and writes the control program 1041 stored in the control program storage unit 111 to the control device 200. The communication processing unit 112 performs a process of writing the control program 1041 into the control device 200 via a network such as a USB cable or Ethernet (registered trademark).

*** Explanation of operation ***
Next, the program generation method and the program generation process S100 in the program generation apparatus 100 according to the present embodiment will be described with reference to FIGS.
FIG. 2 is a flowchart showing a program generation method in program generation device 100 according to the present embodiment.
FIG. 3 is a diagram showing a control system model 1031 in the control system design unit 103 according to the present embodiment.
FIG. 4 is a diagram showing extraction of the input / output information 203 in the information extraction unit 105 according to the present embodiment.
FIG. 5 is a diagram showing the relationship between the input / output information 203 and the device 230 in the information extraction unit 105 according to the present embodiment.
FIG. 6 is a diagram showing synthesis of the control program 1041 and the access program 1083 in the program synthesis unit 110 according to the present embodiment.

  FIG. 3 shows a case where the program generation apparatus 100 is used to design a control system 300 in which three control apparatuses 200 a, 200 b, and 200 c are connected by a control system network 500. As illustrated in FIG. 5, the control device 200 a includes a power supply 210, a PLC 220, and various devices 230 such as an input device X, an output device Y, and a communication device L. The device 230 is connected to a control target device 240 such as a sensor or a robot. The control device 200a controls the control target device 240 based on a control program executed on the PLC 220.

  FIG. 4 shows a case where the information extraction unit 105 extracts the variable name 202 of the input / output information 203 for each control device model 201 from the control system model 1031. As described above, the control system model 1031 is design information of the control system 300, and includes information on the control device model 201, connection information between the control device models 201, and the like.

  In FIG. 5, the control device 200 a receives a signal from the sensor by an input device (here, input device X) of the input device, and the PLC 220 performs arithmetic processing in the control program based on the input signal from the sensor. Execute. Further, the PLC 220 sets the result of the arithmetic processing in the output device of the output device (in this case, the output device Y), whereby the control target device 240 (for example, servo amplifier or robot) connected to the output device is connected. Etc.) is controlled.

  In some cases, data is transferred between the control device 200a and the other control devices 200b and 200c via the control system network 500. For example, there is a case of notifying the control device 200b of the next process that the processing in the control device 200a has been completed. In the communication device of the communication device (here, referred to as communication device L), the data of the communication device of each control device 200 is designated in advance by reading and writing data in a preset area for the control device 200a. It is updated (refreshed) at the specified period.

  Further, in order to access the input device X, the output device Y, and the communication device L, a dedicated function provided by the manufacturer of the PLC 220 is required. The program generation device 100 selects a function for accessing the device name assigned to the variable name 202 of the input / output information 203, and communicates with the input / output access program 10833 for accessing each device using the selected function. Access program 10834 is generated. FIG. 6 shows an example in which the program generation apparatus 100 inserts the input / output access program 10833 and the communication access program 10834 into the control program 1041.

<Control system design process S101>
In S <b> 101, the control system design unit 103 generates a control system model 1031 that is design information of the control system 300 based on the input instruction received by the input reception unit 101. The control system design unit 103 acquires the control device model 201 stored in the model storage unit 102, and generates a control system model 1031 in which an input variable name 2021 and an output variable name 2022 are defined for the acquired control device model 201. To do.

The control system design process S101 will be described using a specific example with reference to FIG.
First, the user uses the input receiving unit 101 to control the control device model 201a of the control device 200a, the control device model 201b of the control device 200b, and the control device 200c from the control device model 201 group stored in the model storage unit 102. The device model 201c is selected. Then, the user places the selected control device models 201 a, 201 b, 201 c in the control system design unit 103. Arrangement in the control system design unit 103 means that the user arranges the control device model 201 using the control system design screen displayed on the display screen by the control system design unit 103, for example.

Next, a variable name 202 corresponding to the input / output information 203 is defined for each of the arranged control device models 201. The variable name 202 includes an input variable name 2021 and an output variable name 2022.
In the control device model 201 a in FIG. 3, an input signal from the sensor is input as the input information 2031. In FIG. 3, the input signal from the sensor indicates that the input variable name 2021 is a sensor input. Further, the control device model 201a outputs three pieces of output information 2032 in which the output variable name 2022 is the process completion, the conveyance start, and the movement start, respectively. Among these, the output information 2032 with the output variable name 2022 being the conveyance start and the movement start is the input / output data 2033, and the output information 2032 with the output variable name 2022 being the process completion is the communication data transmitted to the control device 200b. 2034.
As described above, when it is necessary to exchange data between the control devices 200, the control device models 201 are connected for each data.

In FIG. 3, the output of the process completion of the control device model 201a and the input of the process start of the control device model 201b are connected. Further, the output of the process completion of the control device model 201b and the input of the process start of the control device model 201c are connected.
In this embodiment, only one data is transferred between the control device models 201. However, when a plurality of data is transferred between models, input / output of the model is connected by the number of the data. When data is exchanged between the control device model 201a and the control device model 201c, the input / output of the control device model 201a and the control device model 201c may be connected, and the control device model 201b may be connected to the control device model 201a. You may connect toward.

<Control program generation processing S102>
The control program generation unit 104 executes a control program generation process S102 that generates a control program 1041 executed by the control device 200.
The control program generation unit 104 automatically generates the control program 1041 based on the control system model 1031 designed by the control system design unit 103.

  For example, when the design of the control system 300 is completed, the user issues a generation instruction for the control program 1041 using the input receiving unit 101. When receiving the generation instruction, the control program generation unit 104 automatically generates the control program 1041 based on the control system model 1031. The control program 1041 generated here is generated for each PLC 220 of the control device 200. In the example of FIG. 3, the control program 1041 is generated separately for each of the control devices 200a, 200b, and 200c.

<Information extraction process S103>
The information extraction unit 105 executes an information extraction process S103 that extracts a variable name 202 that represents input / output information 203 that is input to or output from the control device 200 and that is used in the control program 1041.
The information extraction unit 105 extracts a variable name 202 representing the input / output information 203 in the control device model 201 from the control system model 1031. The information extraction unit 105 extracts an input variable name 2021 representing input information 2031 input to the control device 200 and used in the control program 1041. Further, the information extraction unit 105 extracts an output variable name 2022 that is used in the control program 1041 and is an output variable name 2022 representing the output information 2032 output from the control device 200.

The information extraction unit 105 extracts sensor input, process completion, conveyance start, and movement start as the variable name 202 representing the input / output information 203 of the control device 200a from the control system model 1031 of FIG. The sensor input is an input variable name 2021, and the process completion, transfer start, and movement start are output variable names 2022. The input / output information 203 representing sensor input, conveyance start, and movement start is input / output data 2033, and input / output information 203 representing process completion is communication data 2034.
The variable name 202 is set with an input / output type indicating input information 2031 or output information 2032. In FIG. 4, an input is set as the input / output type for the sensor input having the input variable name 2021. An output is set as an input / output type for the process completion, transfer start, and movement start, which are output variable names 2022.

<Assignment processing S104>
The allocation unit 106 executes an allocation process S104 that allocates a device identifier 2301 that identifies the device 230 in which the input / output information 203 represented by the variable name 202 is stored, to the variable name 202.
The assigning unit 106 assigns, to the input variable name 2021, a read source device identifier 23011 that identifies a read source device that is a read source of the input information 2031 represented by the input variable name 2021 as the device identifier 2301. The assigning unit 106 assigns, to the output variable name 2022, a write destination device identifier 23012 that identifies the write destination device that is the write destination of the output information 2032 represented by the output variable name 2022 as the device identifier 2301.

As shown in FIGS. 4 and 5, in the present embodiment, the sensor input from the sensor is read from the device number 1 of the input device X which is an input device. The transfer start signal output from the control device 200a is written in the device number 1 of the output device Y that is an output device, and the movement start signal output from the control device 200a is the output device Y that is an output device. Is written in device number 4. Further, a process completion signal transmitted from the control device 200a to the control device 200b is written in the device number 1 of the communication device L which is a communication device.
For example, the assigning unit 106 displays the variable name 202 representing the input / output information 203 extracted by the information extracting unit 105 on the display screen. The user uses the input receiving unit 101 to assign a device name 2302 and a device number 2303 as device identifiers 2301 to each of the variable names 202 displayed on the display screen.

  Specifically, the device name X and the device number 1 are assigned as the device identifier 2301 to the sensor input of the variable name 202. Upon completion of the process of the variable name 202, the device name L and the device number 1 are assigned as the device identifier 2301. At the start of conveyance of the variable name 202, the device name Y and the device number 1 are assigned as the device identifier 2301. At the start of movement of the variable name 202, the device name Y and the device number 4 are assigned as the device identifier 2301.

<Management file generation process S105>
The management file generation unit 107 creates a management file 1071 for storing information on the device name 2302 and device number 2303 assigned to the variable name 202 by the assignment unit 106, and manages the created management file 1071. The management file 1071 generated here is created as a CSV format file, and stores a variable name 202 representing the input / output information 203, a device name 2302 and a device number 2303 assigned to the variable name 202, separated by commas. However, the management file 1071 may be a file in a format different from the CSV format file. Further, the management file 1071 displays information stored by being opened by the assigning unit 106 so that the user can check the information, and the management file 1071 can be edited using the input receiving unit 101.

<Access program generation processing S106>
The access program generation unit 108 executes an access program generation process S106 for generating an access program 1083 for accessing the device 230 using the variable name 202 and the device identifier 2301.
The access program generation unit 108 generates, as an access program 1083, a read program 10831 that reads the input information 2031 using the input variable name 2021 and the read source device identifier 23011. A read source device identifier 23011 is a read source device from which the input information 2031 is read.
Further, the access program generation unit 108 generates a write program 10832 for writing the output information 2032 as the access program 1083 using the output variable name 2022 and the write destination device identifier 23012. The write destination device identifier 23012 is a write destination device to which the output information 2032 is written.

The access program generation process S106 includes an input / output access program generation process S1061 and a communication access program generation process S1062.
The input / output access program generation processing S1061 generates an input / output access program for the input / output data 2033. The communication access program generation process S1062 generates a communication access program related to the communication data 2034.

<Input / output access program generation processing S1061>
The input / output access program generation unit 1081 extracts the variable name 202 of the input / output data 2033 to which the input device X and the output device Y are assigned from the management file 1071 generated by the management file generation unit 107. The input / output access program generation unit 1081 classifies the extracted variable name 202 into input / output data 2033 to which the input device X is assigned and input / output data 2033 to which the output device Y is assigned. Since the function used when accessing each device differs depending on the type of the device, the variable name 202 of the input / output data 2033 to which the device name of the input device X is assigned is a function for accessing the input device X ( In the example of FIG. 6, an input / output device access program is generated using the getX function. Similarly, for the variable name 202 of the input / output data 2033 to which the device name of the output device Y is assigned, an input / output device access is performed using a function for accessing the output device Y (setY function in the example of FIG. 6). Generate a program.

<Communication access program generation processing S1062>
The communication access program generation unit 1082 extracts the variable name 202 of the communication data 2034 to which the communication device L is assigned from the management file 1071 generated by the management file generation unit 107. The communication access program generation unit 1082 classifies the extracted variable name 202 into an input type and an output type. When the input / output type is input, the communication data 2034 represented by the variable name 202 means that a function for reading data received from another control device from the communication device L is used. When the input / output type is output, the communication data 2034 represented by the variable name 202 means that a function for writing data to be transmitted to another control device to the communication device L is used. A communication access program is generated using a function for accessing the communication device L. In the example shown in FIG. 6, since the process completion input / output type that is the variable name 202 of the communication data 2034 is output, the WriteData function for writing data to the communication device L is used. For example, when the input / output type is input, a ReadData function for reading data from the communication device L is used.

<Program synthesis processing S107>
The program synthesis unit 110 executes a program synthesis process S107 for synthesizing the control program 1041 and the access program 1083.
Program synthesizing unit 110 as shown in Figure 6, the header portion is inserted reading program 10831 of the control program 1041, it inserts a writing program 10832 in the footer part of the control program 1041.

The program synthesis unit 110 inserts the input / output access program 10833 and the communication access program 10834 into the header part and footer part of the control program 1041 executed on the PLC (controller) of each control device.
The program composition unit 110 inserts the input / output access program 10833 and the communication access program 10834 corresponding to the variable name 202 whose input / output type is input into the header portion of the control program 1041. Also, the program composition unit 110 inserts the input / output access program 10833 and the communication access program 10834 corresponding to the variable name 202 whose input / output type is output into the footer portion of the control program 1041.

As shown in FIG. 6, a read program 10831 “sensor input = getX (1)” is inserted in the header portion of the control program 1041. This read program 10831 obtains a value using the getX function from the storage area of the device number 1 of the input device X assigned to the sensor input, and substitutes the obtained value into a sensor input variable. This is the access program 10833.
Further, three write programs 10832 of “setY (1, transport start)”, “setY (4, start of movement)”, and “WriteData (process completion)” are inserted in the footer portion of the control program 1041. The “setY (1, transport start)” write program 10833 is an input / output access program 10833 that writes a value into the storage area of the device number 1 of the output device Y assigned to the transport start using the setY function. It is. The write program 10732 for “setY (4, movement start)” is an input / output access program 10833 for writing a value to the storage area of the device number 4 of the output device Y assigned to movement start by using the setY function. It is. The write program 10832 for “WriteData (process completion)” writes a value to the storage area (area for the control device 200a) of the device number 1 of the communication device L assigned to the process completion by using the WriteData function. This is a communication access program 10834.

<Control program storage process S108>
The program storage unit 111 stores the control program 1041 in which the access program 1083 is synthesized by the program synthesis unit 110.

<Communication processing S109>
The communication processing unit 112 receives an input instruction using the input receiving unit 101 from the user, and writes the control program 1041 stored in the program storage unit 111 in the PLC 220 of the control device 200. The communication processing unit 112 writes the control program 1041 to the PLC 220 of the control device 200 via a network such as a USB cable or Ethernet (registered trademark).
Note that the control program 1041 to be written is written as an executable code after compilation. However, the compilation may be performed in the program generation apparatus 100 or may be performed using another application.
In addition, the program generation device 100 performs simulation in the virtual space using the generated control program 1041, debugs the control program 1041, and transmits the control program 1041 to the PLC 220 in the control device 200 after the operation check is completed. Sometimes written.

*** Explanation of effects according to this embodiment ***
As described above, in the program generation device according to the present embodiment, the variable name of the input / output information is extracted from the control system model, and the device that is the storage area in which the input / output information is stored is identified for the extracted variable name. Assign a device identifier. Further, the program generation device generates an access program using a dedicated function for accessing the input / output device or the communication device based on the assigned device identifier (device name and device number). Then, the program generation apparatus automatically generates a control program in which the generated access program is inserted into the header part and the footer part. Therefore, according to the program generation device according to the present embodiment, it is possible to shorten the development period and cost of the control program.

  Further, in the program generation device according to the present embodiment, a management file in which a device identifier for identifying a device that is a storage area in which input / output information is stored is assigned to a variable name representing input / output information for each control device. Is generated. Therefore, according to the program generation device according to the present embodiment, the device access control program including the device access function call processing can be executed even if the connection destination device (the real address of the memory) is different for each control device. Can be generated automatically.

Embodiment 2. FIG.
In the present embodiment, differences from the first embodiment will be mainly described.
In this embodiment, the same components as those described in Embodiment 1 are denoted by the same reference numerals, and the description thereof may be omitted.

*** Explanation of configuration ***
In the program generating apparatus 100 according to the first embodiment, the access program 1083 is a process of reading or writing data using a dedicated function for each variable name 202 representing the input / output information 203. However, in this embodiment, the continuity of device numbers is checked for the variable names 202 to which the same device name is assigned among the variable names 202 representing the input / output information 203, and the continuous input / output information 203 is collected. The program generation device 100a that can be read or written will be described.

FIG. 7 is a diagram showing a block configuration of the program generation device 100a according to the present embodiment.
The program generation apparatus 100a according to the present embodiment includes a device arrangement unit 113 and a device extraction unit 114 in addition to the block configuration of the program generation apparatus 100 of FIG.

  The device organizing unit 113 rearranges the variable names 202 having the same device name 2302 so that the device numbers 2303 are in numerical order. The device rearranging unit 113 generates a variable name list 2020 rearranged so that the device numbers 2303 are in numerical order. The device organizing unit 113 uses the management file 1071 to classify the variable name 202 into input / output type input and output, and sorts the variable name 202 of the same device name 2302 by the device number 2303.

The device extraction unit 114 extracts a plurality of variable names 202 from the variable name list 2020 based on the device numbers 2303 rearranged in numerical order.
The device extraction unit 114 checks the continuity of the device numbers 2303 for the variable name list 2020 rearranged in the device number order by the device organizing unit 113. The device extraction unit 114 extracts a plurality of variable names 202 from the variable name list 2020 based on the continuity check result of the device number 2303. If there are device numbers 2303 to be accessed within a certain range, the device extraction unit 114 instructs the access program generation unit 108 to read or write data using a single function.

  The access program generation unit 108 generates an access program 1083 that collectively accesses a plurality of devices 230 corresponding to a plurality of variable names 202. The plurality of devices 230 corresponding to the plurality of variable names 202 are the plurality of devices 230 that respectively store the plurality of input / output information 203 represented by the plurality of variable names 202.

*** Explanation of operation ***
FIG. 8 is a flowchart showing a part of the program generation processing S100a of the program generation device 100a according to the present embodiment.

  The program generation process S100a according to the present embodiment performs the same processes as the processes from S101 to S105 of the program generation process S100 described in the first embodiment and the processes from S107 to S109. Omitted.

After the management file generation unit 107 generates the management file 1071 in S105, the process proceeds to S1051.
In S1051, the device organizing unit 113 rearranges the variable names 202 having the same device name so that the device numbers are in numerical order, and generates a variable name list 2020 in which the device numbers are rearranged in numerical order. . First, the device organizing unit 113 classifies the variable name 202 set in the management file 1071 into input / output of input / output type. Next, the device organizing unit 113 classifies the variable name for each device type using the device name. For example, the device organizing unit 113 classifies the device into an input device X, an output device Y, and a communication device L. The device organizing unit 113 sorts the variable names 202 by device number for each classified type, and rearranges the variable names 202 so that the device numbers are in numerical order. Here, the variable name list 2020 indicates a variable name 202 to which the same device name is assigned and rearranged so that the device numbers are in numerical order.

In step S1052, the device extraction unit 114 extracts a plurality of variable names 202 from the variable name list 2020 based on the device numbers rearranged in numerical order.
The device extraction unit 114 checks the continuity of device numbers in the variable name list 2020 for each device type. Checking the continuity of device numbers means how many device numbers are to be read or written within a certain range of device numbers (for example, 1 to 16, 17 to 32, 33 to 48,...). It is to check if there is. As a result of checking, if a plurality of device numbers are assigned within a certain range, the access program generation unit 108 is instructed to read or write data using a single dedicated function. To do.

In S106a, the access program generation unit 108 generates an access program 1083 that accesses the plurality of devices 230 corresponding to the plurality of variable names 202 with one function.
When the device type corresponding to the variable name list 2020 is the input device X or the output device Y, the input / output access program generation unit 1081 uses a single dedicated function to correspond to a plurality of variable names 202. An input / output access program 10833 for accessing the device is generated (S1061a).
If the device type corresponding to the variable name list is a communication device, the communication access program generation unit 1082 uses a dedicated function to access the communication device L corresponding to the plurality of variable names 202. Access program 10834 is generated (S1062a).

Next, a specific example will be described.
Assume that the device name X of the input device X is assigned to a plurality of variable names 202, and 1, 3, 8, 10, 36, 37 are assigned as the device numbers. At this time, the device extraction unit 114 determines that the device numbers 1, 3, 8, and 10 can read the device value by using one function (for example, getWordX function). Similarly, the device extraction unit 114 determines that the device numbers 36 and 37 can read the device value by using one function (for example, getWordX function).
The device extraction unit 114 notifies the determination result to the input / output access program generation unit 1081 of the access program generation unit 108.

  The input / output access program generation unit 1081 receives the notification from the device extraction unit 114, and uses the getWordX function as a process of reading data from the input device X, and performs a process of collectively reading data for a plurality of variable names 202 An access program 1083 to be generated is generated.

In the first embodiment, a function (for example, getX function) for reading data individually for one variable name 202 is used. Since the input device X is a bit device, data is read in 1-bit units in the getX function, but data can be read in word units (16 bits) in the getWordX function. For this reason, the getX function is executed four times in order to read the data of the device numbers 1, 3, 8, and 10 of the input device in the first embodiment, but in this embodiment the getWordX function is executed once. The data of the device numbers 1, 3, 8, and 10 of the input device can be read out only by this.
Even when the output device Y is assigned to a plurality of variable names 202, the same concept as the method of accessing the input device X can be applied.

  Note that when the communication device L is assigned to a plurality of variable names 202, since the communication device L is a word device, the device extraction unit 114 has the device numbers 1, 2, and 3 completely consecutively. It is determined that data can be written to the communication device L using only one function (for example, the WriteData function in the case of data writing). The device extraction unit 114 notifies the communication access program generation unit 1082 of the determination result. In the function that reads or writes data to the communication device L, the first device number of the communication device L that reads or writes data and the number of words of data that are read or written at a time are specified as arguments. I can do it.

*** Explanation of effects according to this embodiment ***
As described above, the program generation apparatus according to the present embodiment checks the continuity of device numbers, and automatically generates an access program using functions for reading and writing necessary data collectively. Therefore, according to the program generation device according to the present embodiment, it is possible to reduce the man-hours for developing the control program by the user, improve the performance of data read / write processing on the device, Execution performance can be improved.

Embodiment 3 FIG.
In the present embodiment, differences from Embodiment 2 will be mainly described.
In the present embodiment, the same components as those described in the first and second embodiments are denoted by the same reference numerals, and the description thereof may be omitted.

  In the program generation apparatus 100a according to the second embodiment, the continuity of device numbers is checked for the variable name list 2020, and access to devices to which a plurality of device numbers are allocated within a certain range is performed with one function. I was processing. In the present embodiment, a function of calculating a recommended number of device numbers that can improve the execution performance of the control program from the result of checking the continuity of device numbers as a recommended device number 23031 and presenting it to the user will be described. To do.

*** Explanation of configuration ***
FIG. 9 is a diagram showing a block configuration of the program generation device 100b according to the present embodiment.
The program generation device 100b according to the present embodiment includes a recommended device calculation unit 115 and a recommended device display unit 116 in addition to the block configuration of the program generation device 100a in FIG.

The recommended device calculation unit 115 calculates a recommended set of device numbers to be assigned to the variable name list 2020 as a recommended device number 23031 based on the device number continuity check result by the device extraction unit 114. The recommended device calculation unit 115 calculates a recommended device number so that the number of calls of a dedicated function for reading or writing data to a device corresponding to the variable name list 2020 can be reduced.
The recommended device display unit 116 displays on the display screen a recommended device number that can reduce the processing time when assigned to the variable name list 2020.
For example, the user assigns a recommended device number to the variable name list 2020 using the recommended device number displayed on the display screen. Alternatively, when the recommended device number is calculated by the recommended device calculation unit 115, the management file generation unit 107 may automatically assign the recommended device number to the variable name list 2020 and update the management file 1071.

*** Explanation of operation ***
FIG. 10 is a flowchart showing a part of the program generation processing S100b of the program generation device 100b according to the present embodiment.

  In the program generation process S100b according to the present embodiment, the same processes as the processes from S101 to S1051 and the processes from S106a to S109 of the program generation process S100a described in the second embodiment are performed. Omitted. In the program generation process S100b according to the present embodiment, the process of S1052 described in the second embodiment is the process illustrated in S1052b illustrated in FIG.

  In step S10521, the device extraction unit 114 checks the continuity of device numbers in the variable name list 2020. The device number continuity check is to extract a plurality of device numbers from which data can be read or written together by one function. The device extraction unit 114 determines the continuity of the device numbers rearranged in numerical order, and extracts a plurality of device numbers based on the determination result.

  In step S10522, the recommended device calculation unit 115 calculates a current processing time 601 when a plurality of devices corresponding to a plurality of device numbers are accessed with a single function, and can be accessed in a processing time shorter than the current processing time 601. A plurality of device numbers are calculated as recommended device numbers. The recommended device calculation unit 115 calculates the current processing time of the process of accessing the device assigned to the variable name 202 as the current processing time 601 based on the check result of the device extraction unit 114. The recommended device calculation unit 115 holds the processing time of each function (for example, getX function, WriteData function, etc.) in advance. The recommended device calculation unit 115 calculates the total current processing time by adding the time required to execute the function that accesses each device based on the check result by the device extraction unit 14. This current processing time is a guide. In the recommended device calculation unit 115, the current processing time is the processing time of the reading program 10831 and the writing program 10832 inserted in the header part and footer part of the control program 1041. The recommended device calculation unit 115 calculates the current processing time 601 by dividing it into the processing time of the reading program 10831 in the header part and the processing time of the writing program 10832 in the footer part.

In step S 10523, the recommended device calculation unit 115 calculates a recommended device number representing device number assignment that can reduce the current processing time based on the device numbers in the variable name list 2020.
The recommended device calculation unit 115 acquires a variable name list 2020 as a result of sorting (rearrangement) by device number from the device organizing unit 113. The recommended device calculation unit 115 changes the device number to a device number in another range, so that the device number has continuity. In this way, the recommended device calculation unit 115 executes the two functions to read or write data by giving the device numbers continuity, and executes the single function to read data. Alternatively, a part to be put together in the process of writing is found out.

For example, when the device number of the input device X is assigned as 10, 11, 17, or 18, the recommended device calculation unit 115 determines that the device extraction unit 114 has two device numbers of 10 and 11, 17 and 18. It is determined that data is read with one function. On the other hand, the recommended device calculation unit 115 checks the number of unused locations between the device numbers 11 and 17, changes the device numbers 17 and 18 to the unused device numbers 15 and 16, and changes the device number to By including within the range of 1 to 16, it is determined that processing can be performed with one function that can read data in units of words. Therefore, the recommended device calculation unit 115 calculates that the recommended device numbers of the input device X are 10, 11, 15, and 16.
The recommended device calculation unit 115 determines whether the locations using different functions can be collected by changing the device number in the output device Y and the communication device L, and calculates the recommended device number. .

  In step S <b> 10524, the recommended device calculation unit calculates a recommended processing time 602 when the recommended device number is assigned to the variable name list 2020. That is, when the recommended device number is assigned to the variable name list 2020, the recommended device calculation unit calculates the total processing time required for executing the function that accesses each device as the recommended processing time 602.

  In step S10525, the recommended device display unit 116 receives the recommended device number calculated by the recommended device calculation unit 115 and the recommended processing time 602, and displays them on the display screen. The recommended device display unit 116 displays the current device number and current processing time 601 and the recommended device number and recommended processing time 602 on the display screen using a layout that allows the user to easily compare.

*** Explanation of effects according to this embodiment ***
As described above, according to the program generation device according to the present embodiment, the number of calls of a function for performing device reading or writing is changed by changing the assigned device number so that it is continuous. Can be reduced. Further, according to the program generation apparatus according to the present embodiment, since the influence on the processing time caused by changing the device number to be continuous is displayed on the display screen, the user can change the device number (recommended result). Value) and the total processing time, it is possible to determine whether or not to change the device number assignment, and the execution performance of the control program can be further improved.

Embodiment 4 FIG.
In the present embodiment, differences from the first embodiment will be mainly described.
In this embodiment, the same components as those described in Embodiment 1 are denoted by the same reference numerals, and the description thereof may be omitted.

  In the first embodiment, the assigning unit 106 assigns a device name and a device number to the variable name 202 based on an assignment instruction input from the user using the input receiving unit 101. In the present embodiment, a function will be described in which, for example, the allocation unit automatically allocates a device name and a device number to a variable name using a file created by another design apparatus.

*** Explanation of configuration ***
FIG. 11 is a diagram showing a block configuration of the program generation device 100c according to the present embodiment.
The program generation device 100c according to the present embodiment includes an allocation information storage unit 117 in addition to the block configuration of the program generation device 100 of FIG. Further, the program generation device 100c according to the present embodiment is different from the first embodiment in the function of the input receiving unit 101c and the function of the assigning unit 106c.

  The allocation information storage unit 117 stores allocation information 1171 in which the device identifier 2301 is associated with the variable name 202. The allocation information 1171 is information in which a device name or a device number is allocated to a variable name, and is defined by, for example, another design apparatus. The other design apparatus is an apparatus that executes software for assigning the device 230 to the variable name 202.

  The input receiving unit 101c receives designation of the allocation information 1171 from the user. The input receiving unit 101c outputs the designation of the allocation information 1171 received from the user to the allocation information storage unit 117. The allocation information storage unit 117 opens the specified allocation information 1171 file and reads the stored data. The allocation information storage unit 117 is also referred to as a device allocation information designation unit.

  The assigning unit 106 c assigns a device identifier 2301 associated with the variable name 202 to the variable name 202 based on the assignment information 1171. The assignment unit 106c compares the variable name 202 read by the assignment information storage unit 117 and the device identifier 2301 associated with the variable name 202 with the variable name 202 extracted by the information extraction unit 105. The assigning unit 106c automatically assigns a device identifier 2301 corresponding to the same variable name 202 as the variable name 202 extracted by the information extracting unit 105 to the variable name 202 extracted by the information extracting unit 105. The assignment unit 106c is also referred to as an assignment information cooperation unit.

*** Explanation of operation ***
FIG. 12 is a flowchart showing a part of the program generation processing S100c of the program generation device 100c according to the present embodiment.

  The program generation process S100c according to the present embodiment performs the same processes as the processes from S101 to S103 of the program generation process S100 described in the first embodiment and the processes from S105 to S109. Omitted. In the program generation process S100c according to the present embodiment, S101c is executed before the process of S101. Further, the allocation process S104 described in the first embodiment is a process of S104c described later.

  In S101c, the input receiving unit 101c receives the designation of the file name of the allocation information 1171 from the user. The input receiving unit 101c outputs the designation of the file name of the allocation information 1171 received from the user to the allocation information storage unit 117. The allocation information storage unit 117 opens the file of the specified allocation information 1171 based on the file name of the specified allocation information 1171, reads the stored data, and outputs it to the allocation unit 106c.

In S <b> 104, the assignment unit 106 c receives assignment information 1171 designated by the user from the assignment information storage unit 117. Further, the assigning unit 106 c receives the variable name 202 extracted by the information extracting unit 105.
The assignment unit 106c compares the variable name 202 extracted by the information extraction unit 105 with the variable name 202 set in the assignment information 1171. The assignment unit 106 c determines whether or not the same variable name as the variable name 202 extracted by the information extraction unit 105 is set in the assignment information 1171. When the same variable name is found, the assignment unit 106c extracts the device identifier 2301 (device name and device number) associated with the variable name in the assignment information 1171, and extracts the extracted device name and device number. Are automatically assigned to the variable name 202.

*** Explanation of effects according to this embodiment ***
As described above, according to the program generation device according to the present embodiment, the assignment of the device name and device number to the variable name representing the input / output information is automated using the assignment information defined by another design device. can do. Therefore, according to the program generation apparatus according to the present embodiment, the assignment work by the user is unnecessary, and the work load can be reduced.

  Next, an example of the hardware configuration of the program generation device 100 according to Embodiment 1 will be described with reference to FIG.

The program generation device 100 is a computer.
The program generation device 100 includes hardware such as a processor 901, an auxiliary storage device 902, a memory 903, a communication device 904, an input interface 905, and a display interface 906.
The processor 901 is connected to other hardware via the signal line 910, and controls these other hardware.
The input interface 905 is connected to the input device 907.
The display interface 906 is connected to the display 908.

The processor 901 is an IC (Integrated Circuit) that performs processing.
The processor 901 is, for example, a CPU, a DSP (Digital Signal Processor), or a GPU.
The auxiliary storage device 902 is, for example, a ROM (Read Only Memory), a flash memory, or an HDD (Hard Disk Drive).
The memory 903 is, for example, a RAM (Random Access Memory).
The communication device 904 includes a receiver 9041 that receives data and a transmitter 9042 that transmits data.
The communication device 904 is, for example, a communication chip or a NIC (Network Interface Card).
The input interface 905 is a port to which the cable 911 of the input device 907 is connected.
The input interface 905 is, for example, a USB (Universal Serial Bus) terminal.
The display interface 906 is a port to which the cable 912 of the display 908 is connected.
The display interface 906 is, for example, a USB terminal or an HDMI (registered trademark) (High Definition Multimedia Interface) terminal.
The input device 907 is, for example, a mouse, a keyboard, or a touch panel.
The display 908 is, for example, an LCD (Liquid Crystal Display).

  The auxiliary storage device 902 includes an input reception unit 101, a control system design unit 103, a control program generation unit 104, an information extraction unit 105, an allocation unit 106, a management file generation unit 107, an access program generation unit 108, a program shown in FIG. Programs that realize functions such as the synthesis unit 110, the program storage unit 111, the communication processing unit 112, the input / output access program generation unit 1081, and the communication access program generation unit 1082 are stored. Hereinafter, the input reception unit 101, the control system design unit 103, the control program generation unit 104, the information extraction unit 105, the allocation unit 106, the management file generation unit 107, the access program generation unit 108, the program synthesis unit 110, the program storage unit 111, The communication processing unit 112, the input / output access program generation unit 1081, the communication access program generation unit 1082, and the like are collectively referred to as “unit”.

The program that realizes the function of the “unit” described above is also referred to as a program generation program. The program that realizes the function of “unit” may be a single program or a plurality of programs. A program for realizing the function of “part” is stored in a storage medium such as a magnetic disk, a flexible disk, an optical disk, a compact disk, a Blu-ray (registered trademark) disk, or a DVD.
This program is loaded into the memory 903, read into the processor 901, and executed by the processor 901.

Further, the auxiliary storage device 902 also stores an OS (Operating System).
Then, at least a part of the OS is loaded into the memory 903, and the processor 901 executes a program that realizes the function of “unit” while executing the OS.

Although one processor 901 is illustrated in FIG. 2, the program generation device 100 may include a plurality of processors 901.
A plurality of processors 901 may execute a program for realizing the function of “unit” in cooperation with each other.

  In addition, information, data, signal values, and variable values indicating the results of the processing of “unit” are stored as files in the memory 903, the auxiliary storage device 902, or a register or cache memory in the processor 901.

The “part” may be provided as “circuitry”.
Further, “part” may be read as “circuit”, “process”, “procedure”, or “processing”. Further, “processing” may be read as “circuit”, “process”, “procedure”, or “part”.
“Circuit” and “Circuitry” include not only the processor 901 but also other types of processing circuits such as a logic IC or GA (Gate Array) or ASIC (Application Specific Integrated Circuit) or FPGA (Field-Programmable Gate Array). It is a concept to include.

  Note that what is called a program product is a storage medium, a storage device, or the like on which a program that realizes the function described as a “part” is recorded. It is what you are loading.

In the above embodiment, each of the “units” constitutes the program generation device 100 as an independent functional block. However, the program generation device 100 may not have the above-described configuration, and the configuration of the program generation device 100 is arbitrary.
For example, the control system design unit 103 and the control program generation unit 104 may be a single functional block. In addition, the information extraction unit 105, the allocation unit 106, and the management file generation unit 107 may be a single functional block. The functional blocks of the program generation device 100 are arbitrary as long as the functions described in the above embodiments can be realized. The communication device may be configured by any other combination of these functional blocks or an arbitrary block configuration.
In addition, the program generation device 100 may be a program generation system including a plurality of devices instead of a single device.

Further, although Embodiments 1 to 4 have been described, a plurality of these four embodiments may be partially combined. Alternatively, one of the four embodiments may be partially implemented. In addition, these four embodiments may be implemented in any combination, in whole or in part.
In addition, said embodiment is an essentially preferable illustration, Comprising: It does not intend restrict | limiting the range of this invention, its application thing, or a use, A various change is possible as needed. .

  100, 100a, 100b, 100c Program generation device, 101, 101c Input reception unit, 102 Model storage unit, 103 Control system design unit, 1031 Control system model, 104 Control program generation unit, 1041 Control program, 105 Information extraction unit, 106 106c Allocation unit 107 Management file generation unit 1071 Management file 108 Access program generation unit 110 Program synthesis unit 111 Program storage unit 112 Communication processing unit 113 Device organization unit 114 Device extraction unit 115 Recommended device calculation 116, recommended device display unit, 117 allocation information storage unit, 1171 allocation information, 1081 input / output access program generation unit, 1082 communication access program generation unit, 1083 Access program, 10831 Read program, 10832 Write program, 10833 Input / output access program, 10844 Communication access program, 200, 200a, 200b, 200c Controller, 201, 201a, 201b, 201c Controller model, 202 Variable name, 2020 List of variable names, 2021 Input variable name, 2022 Output variable name, 203 Input / output information, 2031 Input information, 2032 Output information, 2033 Input / output data, 2034 Communication data, 210 Power supply, 220 PLC, 230 device, 240 Control target device , X input device, Y output device, L communication device, 2301 device identifier, 23011 read source device identifier, 23012 write destination device identifier, 23 02 Device name, 2303 Device number, 23031 Recommended device number, 300 Control system, 500 Control system network, 601 Current processing time, 602 Recommended processing time, 901 Processor, 902 Auxiliary storage device, 903 Memory, 904 Communication device, 905 Input interface , 906 display interface, 907 input device, 908 display, 910 signal line, 911, 912 cable, 9041 receiver, 9042 transmitter, S100, S100a, S100b, S100c program generation processing, S102 control program generation processing, S103 information extraction processing, S104 Allocation processing, S106 access program generation processing, S107 program synthesis processing, S108 program storage processing, S109 Communication processing, X input device, Y output device, L communication device.

Claims (10)

A control program generation unit for generating a control program executed by the control device;
An information extraction unit that extracts variable names representing input / output information including at least one of input information input to the control device and output information output from the control device and used in the control program When,
An assigning unit that assigns a device identifier for identifying a device in which the input / output information represented by the variable name is stored, to the variable name;
An access program generating unit for generating an access program for accessing the device using the variable name and the device identifier;
A program generation apparatus comprising: a program synthesis unit that synthesizes the control program and the access program. The information extraction unit includes:
Extracting the variable name representing the input information as an input variable name, and extracting the variable name representing the output information as an output variable name;
The assigning unit
A read source device identifier for identifying an input device that is a read source of the input information represented by the input variable name is assigned as the device identifier to the input variable name, and the output is output to the output variable name. The program generation apparatus according to claim 1, wherein a write destination device identifier that identifies an output device that is a write destination of the output information represented by a variable name is assigned as the device identifier. The access program generator is
A read program that reads the input information using the input variable name and the read source device identifier, and a write program that writes the output information using the output variable name and the write destination device identifier as the access program The program generation device according to claim 2 to generate. The program synthesis unit
While inserting the read program into the header portion of the control program, the program generating apparatus according to claim 3 for inserting the writing program to footer portion of the control program. The program generation device includes:
A model storage unit for storing a control device model obtained by modeling the control device;
A control system design unit that acquires the control device model stored in the model storage unit and generates a control system model in which the input variable name and the output variable name are defined for the acquired control device model; ,
The information extraction unit includes:
5. The program generation apparatus according to claim 2, wherein the input variable name and the output variable name are extracted from the control system model generated by the control system design unit. The assigning unit is
Assigning the device name and device number of the device as the device identifier to the variable name,
The program generation device includes:
A device organizing unit that generates a list of variable names that are rearranged such that the device numbers are in numerical order, and the device names are rearranged in numerical order for the variable names having the same device name among the variable names; ,
A device extraction unit that extracts a plurality of variable names from the list of variable names based on the device numbers rearranged in numerical order;
The access program generator is
6. The program generation apparatus according to claim 1, wherein the access program that accesses a plurality of devices corresponding to the plurality of variable names with a single function is generated. The assigning unit is
Assigning the device name and device number of the device as the device identifier to the variable name,
The program generation device includes:
A device organizing unit that generates a list of variable names that are rearranged such that the device numbers are in numerical order, and the device names are rearranged in numerical order for the variable names having the same device name among the variable names; ,
A device extraction unit that determines continuity of the device numbers rearranged in numerical order, and extracts a plurality of device numbers based on the determination result;
The current processing time when accessing a plurality of devices corresponding to the plurality of device numbers with one function is calculated, and a plurality of new device numbers that can be accessed in a processing time shorter than the current processing time are used as recommended device numbers. A recommended device calculator to calculate,
The program generation device according to claim 1, further comprising a recommended device display unit that displays the recommended device number. The program generation device includes:
An allocation information storage unit that stores allocation information in which the device identifier is associated with the variable name;
The assigning unit
The program generation device according to any one of claims 1 to 7, wherein the device identifier associated with the variable name is assigned to the variable name based on the assignment information. The control program generation unit generates a control program to be executed by the control device,
An information extraction unit is a variable name representing input / output information including at least one of input information input to the control device and output information output from the control device, and a variable name used in the control program Extract and
An assigning unit assigns, to the variable name, a device identifier that identifies a device in which the input / output information represented by the variable name is stored;
An access program generating unit generates an access program for accessing the device using the variable name and the device identifier;
A program generation method in which a program synthesis unit synthesizes the control program and the access program. A control program generation process for generating a control program executed by the control device;
Information extraction process for extracting variable names representing input / output information including at least one of input information input to the control device and output information output from the control device and used in the control program When,
An assigning process for assigning a device identifier for identifying a device storing the input / output information represented by the variable name, to the variable name;
An access program generation process for generating an access program for accessing the device using the variable name and the device identifier;
A program generation program for causing a computer to execute a program synthesis process for synthesizing the control program and the access program.

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