WO2023157145A1

WO2023157145A1 - Memory management assistance device and computer-readable storage medium

Info

Publication number: WO2023157145A1
Application number: PCT/JP2022/006247
Authority: WO
Inventors: 舞野櫻
Original assignee: ファナック株式会社
Priority date: 2022-02-16
Filing date: 2022-02-16
Publication date: 2023-08-24

Abstract

A memory management assistance device assists the management of a memory of a control device that controls industrial machinery using a plurality of applications, wherein data relating to the startup states of the applications and the operation mode of the control device are acquired, and on the basis of the startup states of the applications and the operation mode of the control device, the degrees of priority of applications to be loaded into the memory of the control device are determined, and the number of applications that can be started, which is the number of applications that can be loaded into the memory, is determined. The control device loads the applications that can be started into the memory of the control device in accordance with the degrees of priority determined by the memory management assistance device.

Description

MEMORY MANAGEMENT SUPPORT DEVICE AND COMPUTER-READABLE STORAGE MEDIUM

The present invention relates to a memory management support device and a computer-readable storage medium.

Some controllers that control industrial machines, such as numerical controllers, install applications (hereinafter referred to as apps) as extended functions. The OS (Operating System) loads the application when the control device is started and when the control device is executed.

For example, in Patent Document 1, when it is determined that the current remaining amount of memory is insufficient to execute a new task, the task utilization rate is calculated, and the running task with the lowest task utilization rate is stopped. An OS is disclosed that repeats the above calculation and task suspension until a space becomes available.

A task is a unit of work by the OS. The OS creates a task control block each time a task occurs. The task control block contains information such as resources required by the task and priority. The OS schedules tasks based on this information.

Numerical controllers in recent years can add auxiliary software modules called apps. Deploying multiple apps in memory allows them to run instantly, but memory capacity is limited. So load the apps you want to run and unload the apps you don't need. There is a problem that loading and unloading the application repeatedly causes a waiting time for loading. Loading is scheduled to reduce loading latency. For scheduling of loading, for example, (A) the applications to be loaded are determined in advance, the number of applications to be loaded is reduced to shorten the startup time of the applications, and the applications that are not loaded are used. and (B) predetermine the apps to be loaded, reduce the number of apps to be loaded, thereby shortening the start-up time of the apps, and for apps that are not loaded, data is stored in the background. There is a way to do the loading.

JP-A-2000-293386

With method (A) above, loading starts when the app is in use, so there is a waiting time. In method (B), applications that are not used are also loaded in the background, so there is a risk of wasting memory and increasing computational load.

In the field of control devices, efficient memory management is desired.

A memory management support device, which is one aspect of the present disclosure, is a memory management support device that supports memory management of a control device that controls an industrial machine using a plurality of apps, and includes data about the running state of the apps, and A data acquisition unit that acquires the operation mode of the control device; a priority determination unit that determines the priority of the application to be loaded into the memory based on the activation state of the application and the operation mode of the control device; an app activatable number determining unit that determines the app activatable number, which is the number of apps, and loads the app activatable number of apps into the memory of the control device according to the priority.
A storage medium, which is one aspect of the present disclosure, includes data about the activation state of an application in a control device that controls an industrial machine using a plurality of applications, and data of the control device, by being executed by one or more processors. The operation mode is acquired, the priority of the application to be loaded into memory is determined based on the activation state of the application and the operation mode of the control device, and the number of applications that can be loaded into memory is determined. , storing computer readable instructions for causing an app launchable number of apps to be loaded into the memory of the controller according to priority.

According to one aspect of the present invention, efficient memory management can be realized.

It is a figure which shows the relationship between a numerical controller and a machine tool. It is a hardware block diagram of a numerical controller and a machine tool. It is a figure explaining the priority of an application. 1 is a block diagram of a numerical controller; FIG. 4 is a flowchart for explaining the operation of the numerical control device; FIG. 3 is a diagram showing the relationship between specifications of a machine tool and a numerical control device and the number of applications that can be activated. It is a table|surface explaining the operation mode of a numerical controller. 4 is a table showing the relationship between operation modes of a numerical controller and applications. FIG. 10 is a diagram showing an example in which memory management support devices are arranged on cloud, fog, and edge;

[First Disclosure]
A numerical controller 100 as a memory management support device of the first disclosure will be described below.
A numerical controller 100 of the first disclosure is applied to a numerical controller 100 that controls a machine tool 200 as shown in FIG. The memory management support device can be implemented in a robot controller for controlling industrial robots, etc., in addition to the numerical control device 100 . A memory management device may also be located on the network to provide management information to the controller.

FIG. 2 is a hardware configuration diagram of the numerical controller 100. As shown in FIG. A CPU 111 included in the numerical controller 100 is a processor that controls the numerical controller 100 as a whole. The CPU 111 reads the system program processed in the ROM 112 via the bus and controls the entire numerical controller 100 according to the system program. The RAM 113 temporarily stores calculation data, display data, various data input by the user via the input unit 71, and the like.

A plurality of applications are installed in the ROM 112. Applications are loaded into the RAM 113 . A priority determining unit, which will be described later, determines the priority of the application. As shown in FIG. 3, high-priority applications are loaded from the ROM 112 (auxiliary storage device) to the RAM 113 (main storage device; memory). Also, applications with low priority are unloaded from the RAM 113 to the ROM 112 .

The display unit 70 is a monitor attached to the numerical controller 100 or the like. The display unit 70 displays an operation screen, a setting screen, and the like of the numerical controller 100 .

The input unit 71 is integrated with the display unit 70 or is a keyboard, touch panel, or the like that is separate from the display unit 70 . The user operates the input unit 71 to perform input to the screen displayed on the display unit 70 . Note that the display unit 70 and the input unit 71 may be mobile terminals.

The non-volatile memory 114 is, for example, a memory that is backed up by a battery (not shown) so that the memory state is retained even when the power of the numerical controller 100 is turned off. The nonvolatile memory 114 stores workpiece shape data, tool shape data, tool path data, and machining programs. The nonvolatile memory 114 stores programs read from external devices via an interface (not shown), programs input via the input unit 71, and various data (for example, , setting parameters obtained from the machine tool, etc.) are stored. Programs and various data stored in the non-volatile memory 114 may be developed in the RAM 113 at the time of execution/use. Various system programs are pre-written in the ROM 112 .

FIG. 4 is a block diagram of the numerical controller 100. As shown in FIG.
The numerical control device 100 of the first disclosure includes a data acquisition unit 1, a data storage unit 2, a machine control unit 3, a device information storage unit 4, an application startable number determination unit 5, a priority determination unit 6, and a memory management unit 7. Prepare.

The data acquisition unit 1 acquires data related to the application and data related to the operation status of the device, and stores them in the data storage unit 2. The data related to the application includes the number of times the application was started, the usage time of the application, the type of application used immediately before the power of the numerical controller 100 was turned off, and the like. The data relating to the machine state includes the operational status of the numerical controller 100, the CPU load factor of the numerical controller 100, and the like.

The machine control unit 3 controls industrial machines such as machine tools 200 and industrial robots. When the control target of the machine control unit 3 is a machine tool, the machine control unit 3 controls the machine tool 200 according to the machining program. When the control target of the machine control unit 3 is an industrial robot, it controls the movement of the industrial robot. An application may be installed in the machine control unit 3 . Apps are programs that perform additional functions. The loading and unloading of applications are executed by the memory management unit 7 of the numerical controller 100 .

The device information storage unit 4 stores information about the device, such as the specifications of the CPU 111 and memory of the numerical control device 100, the number of axes used by the machine tool 200, and the like. The device here means both the numerical control device 100 and the machine tool 200 .

The app activatable number determination unit 5 determines the number of apps to be loaded into the memory (referred to as the app activatable number). A method for determining the number of applications that can be activated is not particularly limited. It may be determined automatically, or may be set manually by the user. A method for determining the number of applications that can be activated will be described later.

The priority determination unit 6 determines the priority of applications to be loaded into memory. A method for determining priority is not particularly limited. A method of determining the priority will be described later.

The memory management unit 7 manages the memory areas of the main storage device and the auxiliary storage device when the application is executed. The memory management unit 7 manages caches and buffers of files, networks, etc., as well as loading of applications and dynamic memory allocation by the applications being executed.
The memory management unit 7 loads applications in descending order of priority determined by the priority determination unit 6 .

The operation of the numerical controller 100 will be described with reference to FIG.
The numerical controller 100 is activated (step S1). At this time, the data acquired by the data acquiring unit 1 immediately before the power is turned off is recorded in the nonvolatile memory 114 of the numerical controller 100 . The data acquired by the data acquisition unit 1 includes the number of times the application was started, the usage time of the application, the type of application used immediately before the power of the numerical controller 100 was turned off, and the like. The numerical controller 100 acquires the data acquired by the data acquiring section 1 immediately before the power is turned off (step S2).

The priority determination unit 6 determines the priority of the application to be loaded into the memory based on the data acquired by the data acquisition unit 1 immediately before the power failure (step S3). A specific example of the priority determination method will be described later.

The app activatable number determination unit 5 determines the number of apps that can be loaded into the memory (app activatable number) (step S4). The number of applications that can be activated may be manually set by the user, or may be calculated from the specifications of the numerical controller 100 and the machine tool 200 . A method for determining the number of applications that can be activated will be described later.

The memory management unit 7 loads the application into the memory when the numerical controller 100 is started. At this time, according to the priority, the number of applications that can be activated is loaded into the memory (step S5).

The machine control unit 3 controls the machine tool 200 according to the machining program. While the machine control unit 3 controls the machine tool 200, the data acquisition unit 1 acquires data related to the application and data related to the operation status of the numerical control device 100 (step S6).

The priority determination unit 6 determines the priority of the application to be loaded into the memory based on the data acquired by the data acquisition unit 1 (step S7).
The memory management unit 7 loads and unloads the application according to the priority and the number of applications that can be activated (step S8).

When the numerical controller 100 is instructed to turn off the power (step S9; Yes), the numerical controller 100 stores the data acquired by the data acquisition unit 1 before the power was turned off in the nonvolatile memory 114 (step S10). .
If the instruction to turn off the power of the numerical controller 100 is not given (step S9; No), the processing from step S6 to step S8 is repeated. When the power of the numerical controller 100 is turned on, the priority of the application is determined using the data of the activation state before the power was turned off.

As described above, the numerical control device 100 as the memory management support device of the first disclosure acquires data related to the application and data related to the driving situation before power-on and during operation, and uses the acquired data to to determine the load priority of and load apps with higher priority. The number of applications that can be loaded (the number of applications that can be activated) is determined from information about devices such as the numerical control device 100 and the machine tool 200 .

The data acquired by the data acquisition unit 1 associates the operating states of the numerical control device 100 and the machine tool with the applications used in the operating states. From the data acquired by the data acquisition unit 1, the activation time, the number of activations, etc. of the application for each operating state can be known. The priority determination unit 6 determines the priority of each application based on the activation time of the application, the number of activations, the probability that the application will be activated next, etc. in a certain operating state. Preferentially load apps with high

By pre-loading applications that are likely to be used according to the operating state of the numerical controller 100, the waiting time associated with loading is reduced. Based on the data acquired by the data acquisition unit 1, by calculating the activation time of the application, the number of times the application is activated, and the probability that the application will be activated next time, the usage tendency of the application for each numerical control device 100 and each operation mode can be understood. Less wasted resources and less waiting time for loading.

[Second Disclosure]
Hereinafter, (1) a priority determination method and (2) a determination method of the number of applications that can be activated will be specifically described.
(1.1) Method of Determining Priority Using Total Activation Count The data acquisition unit 1 acquires the activation state of each application when the numerical control device 100 is in operation as data related to the application. The data acquisition unit 1 stores the acquired data in the ring buffer at regular intervals, and stores the stored data in the data storage unit 2 . The data acquisition unit 1 counts the total number of activations of each application from the acquired data, and stores it in the data storage unit 2 .

The data acquired by the data acquisition unit 1 includes the data acquisition date and time, the operation state (operation mode) of the numerical controller 100, the application name, the number of times of activation [times], the activation state, and the like. The following is an example of data acquired by the data acquisition unit 1 .
Data example: 202112100900, MEM, 60; A, 10, 1; B, 15, 1;, C, 3, 0; D, 7, 0;
The contents of this data are: Acquisition date and time "December 10, 2021 09:00", operation mode "MEM mode", CPU load factor "60%", application "A", number of startups "10 times", "startup medium", application "B", number of times of activation "15 times", start state "starting", application "C", number of times of start "3 times", state of start "stopping", application "D", number of times of start "7" times”, and the activation state is “stopping”.

The total number of times each application is started for each mode of the numerical control device 100 can be calculated using the number of times each application is started which is acquired by the data acquisition unit 1 . The calculated data includes the data update date and time, the operating state (operation mode) of the numerical controller, the application name, the total number of activations [times], and the like. Below is an example of the calculated data.
Data example: 202112100900, MEM; A, 130; B, 110, C, 65; D, 50;
The contents of this data are the update date and time "December 10, 2021 9:00", operation mode "MEM mode", application "A", total number of starts "130 times", application "B", total number of starts " 110 times”, application “C”, total number of times of activation “65 times”, application “D”, total number of times of activation “50 times”.

When determining the priority from the number of activations, the priority determining unit 6 substitutes the total number of activations Nx for each operation mode of each application x into the following formula to obtain the priority px of each application.

Using application B as an example, calculate the priority pB. The total number of startups NB of application B is "110", the minimum number of startups min(N) is the total number of startups of application D "50", and the maximum number of startups max(N) is the total number of startups of application A "130". is. Substituting these numerical values into the above formula yields the following, and the priority of application B can be obtained.

(1.2) Method of Determining Priority Using Starting Time The data acquired by the data acquisition unit 1 includes the date and time of data acquisition, the operating state (operating mode) of the numerical controller 100, and the operating time of each operating mode [ h], application name, startup time [h], and the like. The following is an example of data acquired by the data acquisition unit 1 .
Data example: 20211210900, MEM, 60; A, 1.5, 1; B, 2.0, 1; C, 1.7, 0; D, 2.0, 0;
The content of this data is the date and time of acquisition "December 10, 2021 09:00", operation mode "MEM mode", operation time in MEM mode "60 hours", application "A", startup time "1.5 hours" , startup state "starting", application "B", startup time "2.0h", startup state "starting", application "C", startup time "1.7h", startup state "stopped", application name "D", activation time "2.0h", and activation state "stopping".

Using the activation time of each application acquired by the data acquisition unit 1, the total activation time for each mode of each application can be calculated. The calculated data includes the data update date and time, the operating state (operating mode) of the numerical control device, the total operating time [h] in each operating mode, the application name, the total startup time "h", and the like. The following is an example of calculated data.
Example data: 202112100900, MEM, 340.0; A, 120.0; B, 90.5; C, 20.0; D, 45.5;
The contents of this data are the update date and time "December 10, 2021 09:00", the operation mode "MEM mode", the total operating time in MEM mode "340.0h", the application "A", the total startup time "120 0h", application "B", total startup time "90.5h", application "C", total startup time "20.0h", application "D", total startup time "45.5h".

When determining the priority px of each application from the activation time, the priority determination unit 6 substitutes the total operating time tM of each operation mode and the total activation time Tx for each operation mode of each application x into the following formula. .

Using application B as an example, calculate the priority pB. The total activation time TB of application B is "90.5 hours", and the total operating time in MEM mode is "340.0 hours". Substituting these numerical values into the above formula yields the following, and the priority of application B can be obtained.

(1.3) Priority determination method using conditional probability Data acquisition unit 1 obtains date and time of data acquisition, operation state (operation mode) of numerical control device 100, number of times of execution of operation mode, application name, number of times of activation. Get [Times], startup status, previous app name, etc. The data acquired by the data acquisition unit 1 are as follows.
Data example: 202112100900, MEM, 400; A, 10, 1, B; B, 15, 1, D; C, 3, 0, B; D, 7, 0, A;
The contents of this data are: Acquisition date and time "December 10, 2021 09:00", operation mode "MEM mode", number of executions of MEM mode "400 times", application "A", number of times started "10 times", Startup state "starting", previous application "B", application "B", number of startups "15 times", startup state "starting", previous application "D", application "C", number of startups "3 times" , activation state "stopped", previous application "B", application "D", number of times of activation "7 times", activation state "stopped", and previous application "A".

Using the data acquired by the data acquisition unit 1, when a certain application is running, the number of times the application to be started next can be calculated for each mode of the numerical control device 100. FIG. The calculated data includes data update date and time, operating state (operation mode) of the numerical controller 100, total mode execution count, application name, total start count [times], application X (application A, application B, application C, The number of times [time] that the application D) was started next is included. Below is an example of the calculated data.
Data example: 20211210900, MEM, 400; A, 130, 0, 50, 25, 60; B, 110, 20, 0, 75, 50; , 10, 5, 0;
The contents of this data are the update date and time "December 10, 2021 09:00", the operation mode "MEM mode", the total number of starts in MEM mode "400", the application "A", the total number of starts "130 times". ”, then the number of times application A was started “0 times”, then the number of times application B was started “50 times”, then the number of times application C was started “25 times”, and then the number of times application D was started “ 60 times", application "B", total start count "110", number of times application A was started next "20 times", number of times application B was started next "0 times", number of times application C was started next "75 times", then the number of times app D was started "50 times", app "C", the total number of times started "80 times", then the number of times app A was started "15 times", then app B was started 50 times, then application C was started 0 times, then application D was started 70 times, application D was started, total number of times started was 60, then application A was started. The number of launches is "30 times", the number of launches of application B is "10 times", the number of launches of application C is "5 times", and the number of launches of application D is "0 times".

Here, the conditional probability, which is the probability that another event (for example, the event that application B is next started) occurs under a certain condition (for example, the condition that application A is started) is and let the conditional probability be the priority p. Below, when the application A is currently running, the probabilities P(B|A), P(C|A), and P(D|A) that the applications B, C, and D will start next are obtained. An example of calculating the priority pB when the application A is running is shown below.

(1.4) Method of determining priority of applications started immediately before power failure Remember.
When the numerical control device 100 is powered on, the priority determination unit 6 refers to the data storage unit 2 and sets the priority p at the time of activation of the application that is in the activation state “starting” immediately before the power is turned off to 1. do. If the priority p is 1, it is preferentially loaded.

Next, (2) a method for determining the number of applications that can be activated will be described.
(2.1) Method of Determining the Number of Applications that Can Be Activated Using the Load Factor The data acquisition unit 1 acquires the load factor [%] of the CPU 111 as data relating to the machine state. The maximum value of the CPU load factor is set in the app start-up count determination unit. Here, let the maximum value be 80%. The app start-up count determination unit monitors the CPU load factor, and when the CPU load factor exceeds 80%, the apps are stopped in descending order of priority. This adjusts the number of applications that can be activated. However, when the priority p=1, the application is always started regardless of the CPU load factor.

(2.2) Method for determining the number of applications that can be activated using machine specifications The data acquisition unit 1 obtains the number of cores of the CPU 111 (processing capacity of the CPU 111), the capacity of the memory, and the number of axes of the machine tool 200 as data related to the machine. and so on. The number of applications that can be activated is determined by using data related to the machine tool 200 and the numerical controller 100 .
FIG. 6 is a table that associates data related to machine tool 200 and numerical control device 100 with the number of applications that can be activated.
When the number of cores of the CPU 111 is "2", the memory capacity is "1G", and the number of axes is "1 to 10", the number of applications that can be started is "10". The number of possible applications is "8", and when the number of axes is "31 to 50", the number of applications that can be activated is "6".
When the number of cores of the CPU 111 is "2", the memory capacity is "3G", and the number of axes is "1 to 10", the number of applications that can be started is "15". The number of possible applications is "13", and if the number of axes is "31 to 50", the number of applications that can be activated is "10".

According to the table in FIG. 6, it is possible to determine the number of applications that can be activated with respect to the machine configuration of the machine tool 200 controlled by the numerical controller 100 so that the resources of the numerical controller 100 are not overloaded.

(2.3) Method of Manually Determining Number of Activable Applications The number of activatable applications determining unit 5 accepts manual setting of the number of activatable applications. As described above, the number of applications that can be activated varies depending on the specifications of the machine tool to be controlled and the resources of the numerical controller 100 . The user can also manually set an appropriate number of applications that can be activated based on the specifications of the numerical control device 100 and the machine tool 200 .

[Relationship between operation mode and priority]
In the present disclosure, the application priority is calculated for each operation mode of the numerical controller 100 .
There is a relationship between the operation mode of the numerical controller 100 and the application used. Operation modes and applications are described below.
FIG. 7 is a table of operation modes of the numerical controller 100. As shown in FIG.
Modes of the numerical controller 100 include "memory operation mode: MEM", "MDI mode: MDI", "edit mode: EDIT", "handle mode: HDL", and "jog feed mode: JOG".
In the "memory operation mode", the numerical controller 100 analyzes the machining program and controls the machine tool. The "memory operation mode" is a so-called automatic operation mode. In the "MDI mode", the numerical controller 100 displays MDI (Manual Data Input) and accepts parameter settings, ladder inputs, and the like. In the edit mode, the numerical controller 100 accepts editing of the machining program. In the handle mode, the numerical controller 100 accepts manual operation of the machine tool based on input from a pulse handle or the like. In "jog feed mode", manual operation of the machine tool is accepted based on input from the jog lever.

Apps and operating modes are related. FIG. 8 shows the relationship between applications and operation modes.
The application "NC Operation" displays the program, axis speed, axis position, etc. during machining. "NC operation" is often used in "MEM mode".
The application "Servo Guide" measures waveforms such as the position and speed of the servo axis. "Servo guide" is often used in "MEM mode" and "MDI mode".
The application "Tool Management" registers and confirms tool information. "Tool management" is often used in "MDI mode" and "EDIT mode".
The application "Maintenance Information Management" displays the status of maintenance items (parts that need to be replaced periodically) and registers maintenance items. “Maintenance information management” is often used in “MDI mode” and “MEM mode”.
The application "Energy saving management" displays the energy saving information (power consumption, power consumption number, etc.) during operation. "Energy saving management" is often used in "MEM mode".
The application "Maintenance Inspection" confirms maintenance inspection items and records inspections. "Maintenance" is often used in "MDI mode".
The application "manual" displays the manual of the numerical controller 100 or the machine tool. "Manual" is often used in "MDI mode" and "EDIT mode".
The application "Production Management" displays the production status (production quantity, production quota achievement rate, etc.). "Production control" is often used in "MEM mode".
The app "Robot Teaching" is. It is a support tool for attaching a robot to a machine tool. "Robot teaching" is often used in "MDI mode" and "EDIT mode".
The application "memo function" accepts memo input to text files by handwriting and keyboard. The "memo function" is often used in "MDI mode", "EDIT mode", and "MEM mode".
The application "Machining time prediction" predicts the machining time of the machining program. "Processing time prediction" is often used in "EDIT mode".
The application "in-machine monitoring" displays the state of machining with a camera installed in the machine tool. "In-flight monitoring" is often used in "MEM mode".

As described above, there is a relationship between the operation mode of the numerical controller 100 and the application used. The priority determination unit 6 determines the priority of applications for each operation mode. The number of times the application is started, the time it takes to start, conditional probability, and the like are used to determine the priority.

An app that is launched many times in a certain operating mode is likely to be launched in the same operating mode as well. Therefore, the priority is determined based on the number of activations.

An app that takes a long time to start up in a certain operating mode is likely to start up in the same operating mode as well. Therefore, the priority is determined based on the activation time.

It is highly likely that related apps will be launched in succession. For example, there is a high possibility that the application "maintenance information management" is started after the application "maintenance inspection" is started. (1.3) In the priority determination method using conditional probability, an application to be activated next is predicted based on the application that was activated first.

Also, applications that were running when the power was turned off are likely to be started when the power is turned on again. When the power of the numerical controller 100 is turned on, the application that was running when the power was turned off is preferentially loaded.

The application is started by calling from the machining program, manual operation by the operator, external signals, etc. Priorities may be determined in consideration of machining programs and operators.

Examples of applications activated by external signals include "failure diagnosis", "probe measurement support", and "remote maintenance".
“Failure Diagnosis” is an application that is started by receiving an alarm signal when an alarm occurs in the numerical controller 100 . "Fault Diagnosis" acquires alarm information and displays information necessary for identifying the cause of the alarm and information necessary for recovery.
"Probe measurement support" receives a signal that the currently selected tool has become a probe and is activated. "Probe measurement support" supports measurement of workpieces with probes in the setup process.
"Remote maintenance" is an application for performing remote maintenance via a network. Starts when a connection signal via the network is received from the outside.

[Third Disclosure]
The memory management support device 300 may be arranged on cloud, fog, and edge. FIG. 9 shows a memory management support device 300 arranged on cloud, fog and edge.
The memory management support device 300 includes a data acquisition unit 1 , a data storage unit 2 , an application activation count determination unit 5 , and a priority determination unit 6 .
A control device 400 that controls a machine tool or an industrial robot is a numerical control device or a robot controller, and is present at a site such as a factory. The control device 400 comprises a machine control section 3 and a memory management section 7 .
The device information storage unit 4 may be provided in the memory management support device 300, in the control device 400, or in another device.

The data acquisition unit 1 of the memory management support device 300 acquires data related to applications and data related to the operating status of the control device 400 and stores them in the data storage unit 2 . Data related to the application includes the activation state of the application. Based on the activation state of the application, there are the number of times the application was activated, the usage time of the application, the type of application used immediately before the control device 400 was powered off, and the like. Data related to the operating state of the control device 400 include the operation mode of the control device 400 and the load factor of the CPU 111 of the control device 400 .

The app activatable number determination unit 5 determines the number of apps to be loaded into the memory of the control device 400 . A specific example of the method for determining the number of applications that can be activated has been described above.

The priority determination unit 6 determines the priority of applications to be loaded into the memory of the control device. A specific example of the priority determination method has been described above.

As described above, the memory management support device does not necessarily have to be implemented in the control device, and may be built on a network such as cloud, fog, or edge.

REFERENCE SIGNS LIST 100 Numerical control device 200 Machine tool 300 Memory management support device 400 Control device 1 Data acquisition unit 2 Data storage unit 3 Machine control unit 4 Device information storage unit 5 Application activation count determination unit 6 Priority determination unit 7 Memory management unit 70 Display Part 71 Input part 111 CPU
112 ROMs
113 RAM
114 non-volatile memory

Claims

A memory management support device that supports memory management of a control device that controls an industrial machine using multiple applications,
a data acquisition unit that acquires data about the activation state of the application and an operation mode of the control device;
a priority determination unit that determines the priority of the application to be loaded into the memory based on the activation state of the application and the operation mode of the control device;
an application activatable number determination unit that determines the number of activatable applications, which is the number of applications that can be loaded into the memory;
A memory management support device for loading the number of applications that can be activated into the memory of the control device according to the priority.
The memory management support device according to claim 1, wherein said priority determining unit gives higher priority to an application having a longer startup time based on data relating to the startup state of said application.
　The memory management support device according to claim 1, wherein the priority determining unit gives higher priority to applications that have been started more frequently, based on data about the running state of the applications.
2. The memory management support according to claim 1, wherein said priority determination unit increases the priority of an application that is likely to be activated next based on the data about the activation state of said application and based on the currently activated application. Device.
The data acquisition unit acquires the CPU load of the control device,
2. The memory management support device according to claim 1, wherein said activatable application number determination unit determines the activatable number of applications such that the load on said CPU does not exceed a predetermined value.
storing data relating to the activation state of the application immediately before the control device is powered off, which is acquired by the data acquisition unit;
2. The memory management support device according to claim 1, wherein, when the power of said control device is turned on, said priority determination unit increases the priority of an application that was in a running state immediately before said power was turned off.
The industrial machine is a machine tool,
The controller is a numerical controller,
2. The number of applications that can be activated according to claim 1, wherein the number of applications that can be activated determines the number of applications that can be activated based on the number of axes of the machine tool, the processing capacity of a CPU of the numerical controller, and the capacity of the memory of the numerical controller. Memory management support device.
The data acquisition unit repeatedly acquires data related to activation of the application and an operation mode of the control device,
The priority determination unit determines the priority of the application to be loaded into the memory of the control device based on the data repeatedly acquired by the data acquisition unit;
2. The memory management support device according to claim 1, which loads and unloads the number of applications that can be activated into and from the memory according to the priority.
The memory management support device according to claim 1, wherein said memory management support device is said control device.
by one or more processors executing:
Acquiring data about the running state of the apps and the operation mode of the control device in a control device that uses a plurality of apps to control an industrial machine;
Determining the priority of the application to be loaded into the memory based on the activation state of the application and the operation mode of the control device;
determining the number of applications that can be activated, which is the number of applications that can be loaded into the memory;
loading the number of applications that can be activated into the memory of the control device according to the priority;
A storage medium storing instructions readable by the processor.