JP2023152155A - controller - Google Patents

Abstract

To provide a controller that can easily copy data between the controller and another apparatus.SOLUTION: A programmable logic controller (1) comprises a storage unit (4) for storing a project file, a communication unit (3) for communicating with an external apparatus, a switch (6) for setting an operation mode, and a backup processing unit (5) for controlling delivery of the project file to the external apparatus. When detecting the switch (6) being set to a prescribed first mode, the backup processing unit (5) sets an address of the programmable logic controller to a prescribed first address and attempts to link with another apparatus at a prescribed second address via the communication unit (3). When the link with the other apparatus is successful, the same executes project file transfer operation of sending the project file to the other apparatus via the communication unit (3).SELECTED DRAWING: Figure 1

Description

The present disclosure relates to controllers.

A controller such as a programmable logic controller (PLC) is used as a master device in the field of factory automation (FA), for example.

In other words, in factories, industrial networks, also called field networks, are constructed to connect various control devices, remote I/Os, and manufacturing devices used in work in order to operate them in coordination with each other. ing.

In a general industrial network, a master-slave system is adopted, which is composed of various slave devices and the above-mentioned master device. The slave device is a device that controls equipment installed in a factory or collects data. The master device centrally manages the slave devices.

Furthermore, it is known that data such as control programs stored in a controller can be backed up or restored using a personal computer (general-purpose computer) or the like that executes a dedicated transfer tool.

International Publication No. 2011-099146

However, in the conventional technology as described above, it is necessary to operate the transfer tool each time the data is copied. Furthermore, in order to cause the own machine to execute data write processing and the other machine to execute data read processing, it was necessary to execute a plurality of processing instruction operations in each of the own machine and the other machine. For this reason, in the conventional technology, a problem sometimes arises in that data cannot be easily replicated between the own device and other devices.

The present disclosure has been made in view of the above problems, and an object of the present disclosure is to provide a controller that can easily replicate data between the controller itself and other devices.

The present disclosure employs the following configuration in order to solve the above problems.

A controller according to one aspect of the present disclosure is a controller that controls a controlled device, and stores a project file that includes at least a control program for controlling the controlled device and setting information of the controller. a project file storage unit for storing the project file; a communication unit for communicating with the external device through a connected communication cable; a mode setting switch for setting the operating mode of the controller; a processing unit that controls delivery to and from a device, and when the processing unit detects that the mode setting switch is set to a predetermined first mode, (1) sets the address of the device to a predetermined first mode; 1 address, (2) attempts to link with another device at a predetermined second address via the communication unit, (3) if the link with the other device is successful, (4) the Project file transfer operations (1) to (4) are executed to send the project file to the other device via the communication unit.

According to the above configuration, when the mode setting switch is set to the first mode, the processing unit executes the project file transfer operations (1) to (4). Thereby, data can be transferred from the own machine to the other machine without intervening a transfer tool and without executing multiple processing instruction operations in each of the own machine and the other machine. Therefore, the processing unit can transfer the project file from its own device to another device. As a result, data can be easily replicated between the own device and other devices.

In the controller according to the one aspect described above, in the project file transfer operation, (3) if the link with the other device is successful, the processing section performs the following: Negotiation is performed to determine whether or not the project file can be duplicated, and if it is determined as a result of the negotiation that the project file can be duplicated, (4) the project file is sent to the other device via the communication unit. You may.

According to the above configuration, when the processing section executes negotiation with the other device and determines that the project file can be copied, the project file is sent to the other device via the communication section. Thereby, the processing unit can easily perform reliable replication of data between its own device and another device.

The controller according to the above aspect includes a bus connection unit that performs bus communication with the connected control auxiliary device so that the controller and the control auxiliary device operate as a master device with expanded functions. The controller further includes: the control auxiliary device stores an add-on application that includes at least an execution program for functional expansion and its own setting information; and the processing section is configured to transfer the project file. In operation, when the project file is sent to the other device, the add-on application of the control auxiliary device may also be sent.

According to the above configuration, even when the controller is configured integrally with the control auxiliary device and its functions are expanded, necessary data can be easily replicated between the own device and another device.

In the controller according to the above aspect, the link may be a link through one-to-one communication with the other device.

According to the above configuration, data can be easily replicated reliably between the own device and another device.

In the controller according to the above aspect, when the processing unit detects that the mode setting switch is set to a predetermined second mode, (A) sets the address of the own device to a predetermined second address; (B) attempts to link with another device at a predetermined first address via the communication unit, (C) if the link with the other device is successful, (D) via the communication unit, Project file receiving operations (A) to (D) may be executed, in which a project file is received from the other device and stored in the project file storage section.

According to the above configuration, when the mode setting switch is set to the second mode, the processing unit executes the project file receiving operations (A) to (D). Thereby, data can be transferred from the other device to the own device without intervening a memory card and without performing predetermined individual operations on each of the own device and the other device. Therefore, the processing section can receive the project file transferred from another device to the own device. As a result, data can be easily replicated between the own device and other devices.

In the controller according to the above aspect, the project file transfer operation is executed when the processing unit detects that the mode setting switch is set to a predetermined first mode when the controller is started, and The file receiving operation may be executed when the processing unit detects that the mode setting switch is set to a predetermined second mode when the controller is activated.

According to the above configuration, it is possible to automatically easily copy data between the own device and another device.

According to the present disclosure, it is possible to provide a controller that can easily replicate data between its own device and another device.

FIG. 2 is a functional block diagram showing a configuration example of a programmable logic controller and an expansion unit according to an embodiment of the present disclosure.

§1 Application Example First, an example of a scene to which the present disclosure is applied will be described using FIG. 1. FIG. 1 is a functional block diagram showing a configuration example of programmable logic controllers 1 and 100 and expansion units 10 and 110 according to an embodiment of the present disclosure. In the following description, a case will be described in which the programmable logic controllers 1 and 100 are used as the controllers. Furthermore, in the following description, the programmable logic controllers 1 and 100 have the same configuration.

The programmable logic controller 1 of this embodiment constitutes a master device of a master-slave type in an industrial network (field network) provided in a factory, for example. That is, the programmable logic controller 1 of this embodiment is a controller that operates as a master device that controls a slave device as a controlled device.

The programmable logic controller 1 of this embodiment includes a communication section 3, a storage section 4, a backup processing section 5, and a switch 6. The programmable logic controller 1 of this embodiment is a replication source controller that transfers a project file, which will be described later, to a programmable logic controller 100, which is a replication destination controller.

The communication unit 3 is a functional block for communicating with external devices through the connected communication cable 30. A communication cable 30 is connected to the communication section 3 . When a user (worker) wants to copy a project file from the programmable logic controller 1 to the programmable logic controller 100, the communication section 3 and the communication section 103 of the programmable logic controller 100 are directly connected with the communication cable 30.

The storage unit 4 is an example of a project file storage unit of the programmable logic controller 1. The storage unit 4 stores a project file including at least a control program 4A for controlling the slave device, and a setting file 4B (setting information) for the slave device and the programmable logic controller 1.

The switch 6 is an example of a mode setting switch of the programmable logic controller 1. The switch 6 sets the operating mode of the programmable logic controller 1 according to a user's operation.

The backup processing section 5 is an example of a processing section of the programmable logic controller 1. The backup processing unit 5 controls the transfer of the project file to and from the programmable logic controller 100.

Further, when the backup processing unit 5 detects that the switch 6 is set to a predetermined first mode, it executes the following project file transfer operations (1) to (4). That is, the backup processing unit 5 (1) sets the address of its own device to a predetermined first address. Further, the backup processing unit 5 (2) attempts to link with the programmable logic controller 100 at a predetermined second address via the communication unit 3 . If (3) the link with the programmable logic controller 100 is successful, the backup processing unit 5 (4) sends the project file to the programmable logic controller 100 via the communication unit 3 .

Therefore, according to the present embodiment, when the backup processing unit 5 transfers the project file from the programmable logic controller 1 (own device) to the programmable logic controller 100 (other device), a specific transfer from a personal computer or the like is performed. There is no need for intervening tools. Further, in the programmable logic controller 1 of this embodiment, the project file can be transferred without executing multiple processing instruction operations in each of the programmable logic controller 1 and the programmable logic controller 100.

As a result, in this embodiment, the user can extremely easily duplicate the settings of the programmable logic controller 1 at a factory site or the like.

§2 Configuration example <Programmable logic controllers 1 and 100>
Next, with reference to FIG. 1, the programmable logic controllers 1 and 100 of this embodiment will be specifically described. Note that in the following description, the present disclosure will be described by exemplifying a case where the present disclosure is applied to a distributed/modular system (also called an add-on system) that includes the expansion unit 10. Furthermore, in the following description, the programmable logic controllers 1 and 100 will mainly be described as a project file replication source and a project file replication destination, respectively.

In the example of FIG. 1 , the programmable logic controller 1 of this embodiment includes a connection section 2 . The connection section 2 is an example of a bus connection section of the programmable logic controller 1. Further, an expansion unit 10 as a control auxiliary device is connected to the connection section 2 via a unit connection bus 20 that performs bus communication using a predetermined communication protocol. In other words, the connection section 2 constitutes the above-mentioned bus connection section through which the programmable logic controller 1 and the expansion unit 10 work together as a master device with expanded functions.

The communication unit 3 includes a communication interface (not shown) for performing bidirectional communication with the slave device. The communication unit 3 is connected to one end of a communication cable 30 using, for example, a LAN (Local Area Network) cable or a USB (Universal Serial Bus) cable. Further, the communication unit 3 performs the above-mentioned two-way communication using a communication protocol such as an IP (Internet Protocol) protocol, for example.

The storage unit 4 includes, for example, RAM (Random Access Memory). Further, the control program 4A and setting file 4B are downloaded in advance to the storage unit 4 from a programming tool (for example, a personal computer) not shown through the communication unit 3. The storage unit 4 stores the downloaded control program 4A, setting file 4B, etc. in advance. That is, the storage unit 4 stores in advance a project file that includes at least a control program 4A for controlling the slave device, and a configuration file 4B for the slave device and the programmable logic controller 1.

The backup processing unit 5 is configured using, for example, a CPU (Central Processing Unit). The operations executed by the backup processing unit 5 will be described later.

The switch 6 is a hardware switch provided in the programmable logic controller 1. The switch 6 is configured by, for example, a dip switch. The switch 6 can set the operation mode of the programmable logic controller 1 to a predetermined first mode or a predetermined second mode by being switched according to a user's operation.

The first mode is an operation mode in which the programmable logic controller 1 copies the stored project file to another programmable logic controller 100.

The second mode is an operation mode in which the programmable logic controller 1 accepts a project file stored in another programmable logic controller and copies it to the storage unit 4.

Further, the switch 6 can be switched in response to a user's operation to set the operation mode of the programmable logic controller 1 to a mode other than either the first mode or the second mode. For example, the programmable logic controller 1 can also execute a normal mode in which the programmable logic controller 1 functions as the master device in response to the operation on the switch 6.

The programmable logic controller 100 of this embodiment includes a connection section 102, a communication section 103, a storage section 104, a backup processing section 105, and a switch 106. The connection unit 102, communication unit 103, storage unit 104, backup processing unit 105, and switch 106 have the same configuration as the connection unit 2, communication unit 3, storage unit 4, backup processing unit 5, and switch 6, respectively. Therefore, the redundant explanation will be omitted.

<Expansion units 10 and 110>
The expansion unit 10 includes a connection section 11 and a storage section 12. Similar to the connection section 2, the programmable logic controller 1 is connected to the connection section 11 via a unit connection bus 20 that communicates using a predetermined communication protocol.

The storage unit 12 includes, for example, RAM (Random Access Memory). Furthermore, at least one add-on application is installed in the storage unit 12 in advance. Specifically, the storage unit 12 stores in advance an application package 12A, an application execution program 12B, and an application setting file 12C for each add-on application.

More specifically, the application package 12A is a data file that includes an application execution program 12B and an application setting file 12C. The application execution program 12B is an execution program for functional expansion in the expansion unit 10. The application setting file 12C is setting information for the expansion unit 10 itself.

In the expansion unit 10, the user operates a programming tool (for example, a personal computer) (not shown) to install an add-on application in the storage unit 12 using the application package 12A. As a result, in the expansion unit 10, the application execution program 12B and, for example, the factory-set application setting file 12C are held in the storage unit 12.

Furthermore, in the expansion unit 10, the user can reflect desired settings in the application setting file 12C by configuring the add-on application using a programming tool.

Expansion unit 110 has the same configuration as expansion unit 10. In other words, the expansion unit 110 includes a connection section 111 and a storage section 112 that are the same as the connection section 11 and storage section 12 of the expansion unit 10, respectively.

§3 Operation example Next, an operation example of the programmable logic controllers 1 and 100 of this embodiment will be specifically described. In the following description, an example will be described in which the programmable logic controllers 1 and 100 function as a project file replication source controller and a project file replication destination controller, respectively. That is, in the following explanation, the operation in which the user copies the settings of the programmable logic controller 1 will be mainly explained.

<Example of operation of programmable logic controllers 1 and 100>
First, the user turns off the power in each of the programmable logic controllers 1 and 100. Next, the user sets the switch 6 in the programmable logic controller 1 to the first mode. The user also sets the switch 106 in the programmable logic controller 100 to the second mode.

After that, the user connects one end and the other end of the communication cable 30 to the communication section 3 of the programmable logic controller 1 and the communication section 103 of the programmable logic controller 100, respectively.

Next, the user turns on the power in each of the programmable logic controllers 1 and 100. As a result, the programmable logic controllers 1 and 100 start up in the first mode and the second mode, respectively.

That is, in the programmable logic controller 1, when the backup processing section 5 detects the first mode set in the switch 6, the backup processing section 5 sequentially executes the project file transfer operations (1) to (4). Furthermore, in the programmable logic controller 100, when the backup processing unit 105 detects the second mode set in the switch 106, the backup processing unit 105 sequentially executes the project file receiving operations (A) to (D).

In the programmable logic controller 1, a project file transfer operation (1) is executed. Specifically, when the backup processing unit 5 detects that the switch 6 is set to a predetermined first mode, the backup processing unit 5 changes the address of its own device to a predetermined first address that is a fixed address (for example, 169.254.100.1). Set to .

On the other hand, the programmable logic controller 100 executes a project file receiving operation (A). Specifically, when the backup processing unit 105 detects that the switch 106 is set to a predetermined second mode, the backup processing unit 105 changes the address of its own device to a predetermined second address that is a fixed address (for example, 169.254.100.2). Set to .

Next, the programmable logic controller 1 executes a project file transfer operation (2). Specifically, the backup processing unit 5 attempts to link with the programmable logic controller 100 (another device) at a predetermined second address via the communication unit 3 .

On the other hand, the programmable logic controller 100 executes a project file receiving operation (B). Specifically, the backup processing unit 105 attempts to link with the programmable logic controller 1 (another device) at a predetermined first address via the communication unit 103.

Since the programmable logic controllers 1 and 100 are set to a fixed link local IP (Internet Protocol) address, the programmable logic controllers 1 and 100 have an IP (Internet Protocol) connection via the communication cable 30 that directly connects the two devices. Can be established automatically.

As described above, the programmable logic controller 1 and the programmable logic controller 100 can perform bidirectional data communication through an IP (Internet Protocol) connection with the communication cable 30 interposed. That is, the programmable logic controller 1 can transmit data to the programmable logic controller 100 by linking with the programmable logic controller 100 through one-to-one communication.

Next, the programmable logic controller 1 executes a project file transfer operation (3). Specifically, the backup processing unit 5 determines whether the link with the programmable logic controller 100 is successful. When the backup processing unit 5 determines that the link is successful, it executes negotiation with the programmable logic controller 100 to determine whether the project file can be copied to the programmable logic controller 100.

On the other hand, the programmable logic controller 100 executes a project file receiving operation (B). Specifically, the backup processing unit 105 determines whether the link with the programmable logic controller 100 is successful. When the backup processing unit 105 determines that the link is successful, it executes negotiation with the programmable logic controller 1 to determine whether or not the project file from the programmable logic controller 1 can be copied.

The above negotiation is a process in which information is mutually exchanged between the backup processing units 5 and 105 of the replication source and the replication destination, and procedures are adjusted and determined before the start of data transmission and reception. In addition, the main information to be exchanged and confirmed during this negotiation and its purpose are shown below.

(b) IP (Internet Protocol) address and port number (whether the first address and second address are for the first mode or the second mode)
(b) Status information of programmable logic controllers 1 and 100 (whether or not they started in the first mode or second mode)
(c) Product information such as the format of programmable logic controllers 1 and 100 (whether the format is replicable or not)
(d) Security information of programmable logic controllers 1 and 100 (whether duplication is possible or not)
(E) Information to be replicated on the programmable logic controllers 1 and 100 (determination of data to be replicated, such as settings, control programs, variable values, etc.)
(f) Configuration information of the expansion units 10 and 110 installed in the programmable logic controllers 1 and 100, respectively (whether the configurations of the expansion units 10 and 110 are the same)
(g) Add-on information of expansion units 10 and 110 (discrimination of add-on application data)
(H) Security information of add-ons for expansion units 10 and 110 (whether duplication is possible or not)
Note that, if the above negotiation fails, the backup processing units 5 and 105 interrupt the project file transfer operation and the project file reception operation, respectively.

Subsequently, in the programmable logic controller 1, if the negotiation is successful, the backup processing unit 5 determines that it is possible to copy the project file and the add-on application as a result of the negotiation. Then, the backup processing unit 5 executes the project file transfer operation (4).

Specifically, the backup processing unit 5 sends the control program 4A and setting file 4B included in the project file to the programmable logic controller 100 via the communication unit 3. The backup processing unit 5 also acquires all add-on applications from the expansion unit 10 via the unit connection bus 20. When the backup processing unit 5 sends the project file, it sends all add-on applications together with the project file.

Specifically, the backup processing unit 5 reads the application package 12A, the application execution program 12B, and the application setting file 12C from the storage unit 12. Then, the backup processing unit 105 sends the read application package 12A, application execution program 12B, and application setting file 12C to the programmable logic controller 100 via the communication unit 3.

On the other hand, in the programmable logic controller 100, if the backup processing unit 105 determines that the project file can be duplicated and the add-on application can be duplicated as a result of the negotiation, the project file receiving operation (D) is executed.

Specifically, the backup processing unit 105 receives the control program 4A and the setting file 4B from the programmable logic controller 1 via the communication unit 3. Then, the backup processing unit 105 stores the received control program 4A and setting file 4B in the storage unit 104 as a control program 104A and a setting file 104B, respectively.

Further, the backup processing unit 105 receives the application package 12A, the application execution program 12B, and the application setting file 12C from the programmable logic controller 1 via the communication unit 3. The backup processing unit 105 then transmits the application package 12A, application execution program 12B, and application setting file 12C received via the unit connection bus 120 to the expansion unit 110.

Subsequently, the backup processing unit 105 receives the application package 12A, the application execution program 12B, and the application setting file 12C. Then, the backup processing unit 105 stores them in the storage unit 112 as an application package 112A, an application execution program 112B, and an application setting file 112C, respectively.

Note that if a plurality of add-on applications are stored in the storage unit 12 of the expansion unit 10, the backup processing unit 5 repeatedly sends each add-on application to the programmable logic controller 100.

<Action, effect>
As described above, the programmable logic controller 1 of this embodiment is directly connected to the programmable logic controller 100 using the communication cable 30 without using a device such as a personal computer. Thereby, the programmable logic controller 1 of this embodiment can transfer the project file to the programmable logic controller 100.

Furthermore, in the programmable logic controller 100 of this embodiment, the backup processing unit 105 executes the project file receiving operations (A) to (D) by setting the second mode using the switch 106.

That is, in the programmable logic controller 1, the user only has to operate the switch 6 provided in the programmable logic controller 1. Therefore, in the programmable logic controller 1, there is no need to perform operations for inputting information such as an address of a data copy destination and operations for specifying data to be copied, etc., to the transfer tool.

Furthermore, in the programmable logic controller 100, the user does not need to perform operations such as confirming information such as the address of the data replication source and specifying data to be copied using the transfer tool. The programmable logic controller 100 can receive data from the programmable logic controller 1. As a result, data can be easily replicated between the programmable logic controller 1 and the programmable logic controller 100.

Further, as described above, in this embodiment, data from the programmable logic controller 1 of the replication source is transferred to the programmable logic controller of the replication destination without using a personal computer (transfer tool) using a specific program for data transfer. It can be transferred to the logic controller 100. Therefore, in this embodiment, it is necessary to manage the transfer tool when replacing the programmable logic controller 100 at a factory or other site due to a failure of the programmable logic controller 100 or an update of its software. There is no.

It is also conceivable that the controller can back up the project file to a memory card and transfer the project file via the memory card. However, the use of such memory cards may pose a problem in that it is difficult to ensure data security. In other words, in such a comparative example, there is a risk of confidential information being leaked if the memory card storing the project file is taken out.

In contrast, in this embodiment, since a memory card is not used, the security of data held by the programmable logic controller 1 can be easily ensured. Further, in this embodiment, unlike the conventional example described above, it is possible to suppress the occurrence of work errors such as incorrect attachment of a memory card to the programmable logic controller 1 or 100.

Furthermore, in the present embodiment, data from the programmable logic controller 1 can be easily replicated, for example, when producing a manufacturing device, a measuring device, etc. in which the programmable logic controller 100 is incorporated. Thereby, in this embodiment, the manufacturing device, measuring device, etc. can be easily mass-produced.

Furthermore, in the programmable logic controllers 1 and 100 of this embodiment, the backup processing units 5 and 105 execute negotiation to determine whether the project file can be copied. In this embodiment, when the backup processing unit 5 determines that the project file can be copied, it sends the project file to the backup processing unit 105 via the communication unit 3. Thereby, the backup processing unit 5 can easily perform reliable duplication of data between the programmable logic controller 1 and the programmable logic controller 100.

Further, in this embodiment, when the backup processing section 5 sends the project file to the backup processing section 105 in the project file transfer operation, it also sends the add-on application of the expansion unit 10. As a result, in this embodiment, even if the programmable logic controllers 1 and 100 are configured integrally with the expansion units 10 and 110 to expand their functions, necessary data can be exchanged between the programmable logic controllers 1 and 100. Replication can be easily performed.

Further, in this embodiment, the above-mentioned link in the programmable logic controller 1 is a link through one-to-one communication with the programmable logic controller 100. Thereby, in this embodiment, data can be easily replicated reliably between the programmable logic controllers 1 and 100.

Furthermore, in the present embodiment, in the project file transfer operations (1) to (4), when the programmable logic controller 1 is started, the backup processing unit 5 detects that the switch 6 is set to a predetermined first mode. Then it will be executed. Further, the project file receiving operations (A) to (D) are executed when the backup processing unit 105 detects that the switch 106 is set to a predetermined second mode when the programmable logic controller 100 is started. Thereby, in this embodiment, data can be easily replicated automatically between the programmable logic controllers 1 and 100.

The present disclosure is not limited to the embodiments described above, and various changes can be made within the scope of the claims, and embodiments obtained by appropriately combining technical means disclosed in the embodiments. It is within the technical scope of this disclosure.

1,100 Programmable logic controller (controller)
2, 102 Connection section (bus connection section)
3, 103 Communication Department 4, 104 Storage Department (Project File Storage Department)
5, 105 Backup processing unit (processing unit)
6, 106 switch (mode setting switch)
10, 110 Expansion unit (control auxiliary device)

Claims (6)

A controller that controls a controlled device,
a project file storage unit for storing a project file including at least a control program for controlling the controlled device and setting information for the controller;
a communication unit for communicating with the external device through a connected communication cable;
a mode setting switch for setting an operating mode of the controller;
a processing unit that controls transfer of the project file to and from an external device;
Equipped with
The processing unit includes:
Upon detecting that the mode setting switch is set to a predetermined first mode,
(1) Set the address of your machine to the predetermined first address,
(2) Attempt to link with another device at a predetermined second address via the communication unit,
(3) If the link with the other device is successful,
(4) sending the project file to the other device via the communication section;
Execute project file transfer operations (1) to (4),
controller. In the project file transfer operation, the processing unit:
(3) If the link with the other device is successful,
executing negotiation with the other machine as to whether or not it is possible to copy the project file to the other machine;
As a result of the negotiation, if it is determined that the project file can be copied,
(4) sending the project file to the other device via the communication section;
The controller according to claim 1. In order for the controller and the control auxiliary device to work together as a master device with expanded functions,
The controller further includes a bus connection unit that performs bus communication with the connected control auxiliary device,
The control auxiliary device stores an add-on application that includes at least an execution program for functional expansion and its own setting information,
In the project file transfer operation, the processing unit:
when sending the project file to the other device, also sending the add-on application of the control auxiliary device;
The controller according to claim 1. The link is a link based on one-to-one communication with the other device,
The controller according to claim 1. The processing unit includes:
Upon detecting that the mode setting switch is set to a predetermined second mode,
(A) Set the address of your machine to a predetermined second address,
(B) Attempt to link with another device at a predetermined first address via the communication unit,
(C) If the link with the other device is successful,
(D) receiving a project file from the other device via the communication unit and storing it in the project file storage unit;
Execute project file reception operations (A) to (D),
A controller according to any one of claims 1 to 4. The project file transfer operation is as follows:
Executed when the processing unit detects that the mode setting switch is set to a predetermined first mode when the controller is started,
The project file receiving operation is as follows:
executed when the processing unit detects that the mode setting switch is set to a predetermined second mode when the controller is activated;
The controller according to claim 5.

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