WO2017141332A1 - 負荷分散装置 - Google Patents
負荷分散装置 Download PDFInfo
- Publication number
- WO2017141332A1 WO2017141332A1 PCT/JP2016/054338 JP2016054338W WO2017141332A1 WO 2017141332 A1 WO2017141332 A1 WO 2017141332A1 JP 2016054338 W JP2016054338 W JP 2016054338W WO 2017141332 A1 WO2017141332 A1 WO 2017141332A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- program
- execution
- programs
- time
- unit
- Prior art date
Links
Images
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
- G05B19/052—Linking several PLC's
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B21/00—Systems involving sampling of the variable controlled
- G05B21/02—Systems involving sampling of the variable controlled electric
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/10—Plc systems
- G05B2219/12—Plc mp multi processor system
Definitions
- the present invention relates to a load distribution device that causes a plurality of control devices to execute a plurality of execution target programs.
- the total program end time which is the delay time, is shortened. That is, the total program end time when a plurality of control devices share and execute a plurality of execution target programs is shorter than the total program end time when one control device executes a plurality of execution target programs. Become.
- the present invention has been made in view of the above, and an object of the present invention is to obtain a load distribution device that shortens the entire program end time.
- the present invention provides a load distribution apparatus that causes a plurality of execution programs to execute a plurality of execution target programs, and each of the plurality of execution target programs includes a plurality of types.
- Identification means for identifying which of the plurality of programs, acquisition means for acquiring the execution time information of each of the plurality of types of programs, and each of the plurality of execution target programs of the plurality of control devices
- the combination means for creating a plurality of combinations when assigned to any one of the information obtained by the specifying means and the acquisition means are presumed that the execution time when the same type of program is executed is the same.
- a prediction means for predicting the total program end time, which is a delay time from when the target program is distributed until the execution results of the plurality of execution target programs are returned to the distribution source
- a selection unit that selects one combination in which the total program end time predicted by the prediction unit is shorter than a reference time, and the one combination selected by the selection unit Therefore, it comprises control means for allocating each of the plurality of execution target programs to any of the plurality of control devices and causing the plurality of control devices to execute the plurality of execution target programs.
- the load distribution apparatus has an effect that the end time of all programs can be shortened.
- FIG. 1 is a configuration diagram of a load distribution system including a load distribution apparatus according to a first embodiment.
- the figure which shows the example of the combination which the combination means of FIG. 10 produces The figure which shows that some means which comprise the
- FIG. 1 is a configuration diagram of a load distribution system 20 including a load distribution apparatus according to the first embodiment.
- the load distribution apparatus according to the first exemplary embodiment is an apparatus that distributes execution of a plurality of execution target programs to a plurality of control apparatuses.
- the load distribution device is the information terminal device 4, and the control device is a programmable logic controller.
- the programmable logic controller is referred to as “PLC”.
- PLC is an abbreviation for Programmable Logic Controller.
- the load distribution device and the control device may be ordinary personal computers.
- the personal computer is referred to as “PC”.
- PC is an abbreviation for Personal Computer.
- the load distribution system 20 includes a first PLC 1, a control network 2, an information network 3, an information terminal device 4, a maintenance terminal device 5, a second PLC 6, and a third PLC 7. And have.
- An external device 8 is connected to the first PLC 1.
- An example of the external device 8 is a sensor, a pump, or a valve.
- An example of a sensor is a flow meter or a pressure gauge.
- the first PLC 1 has a memory 10.
- the maintenance terminal device 5 has a design tool 51 that stores a user program.
- a user program from the design tool 51 of the maintenance terminal device 5 is stored in the memory 10 of the first PLC 1.
- the first PLC 1 uses the user program stored in the memory 10 to acquire a value measured by the sensor of the external device 8 and outputs a control signal to the external device 8.
- the first PLC 1 also has components other than the memory 10. The components other than the memory 10 included in the first PLC 1 will be described later with reference to FIG.
- the control network 2 is a communication network that connects the first PLC 1, the second PLC 6, and the third PLC 7 to each other.
- Each of the plurality of PLCs is connected to each other via the control network 2.
- the first PLC 1, the second PLC 6, and the third PLC 7 can exchange data with each other in real time by using the shared memory in the control network 2.
- An example of the shared memory is a cyclic memory. For ease of explanation, the shared memory is not shown in FIG.
- the information network 3 is a communication network that connects the information terminal device 4, the first PLC 1, the second PLC 6, and the third PLC 7 to each other.
- the information network 3 may be a local area network or the Internet.
- the information terminal device 4 is composed of a PC.
- the information terminal device 4 may be a dedicated device that is not a general-purpose PC.
- the information terminal device 4 communicates with each of the first PLC 1, the second PLC 6, and the third PLC 7 via the information network 3 in accordance with a communication protocol.
- An example of the communication protocol is TCP / IP (Transmission Control Protocol / Internet Protocol).
- the information terminal device 4 has a storage device 40 including a database 41 and a memory 42.
- the memory 42 stores MES and ERP.
- MES is an abbreviation for Manufacturing Execution System, and is information for maximizing production.
- ERP is an abbreviation for Enterprise Resource Planning and is information for maximizing profits.
- the information terminal device 4 monitors the data possessed by the first PLC 1, stores the data possessed by the first PLC 1 in the database 41, and transmits a signal for controlling the first PLC 1 to the first PLC 1.
- the information terminal device 4 also has components other than the storage device 40. Components other than the storage device 40 included in the information terminal device 4 will be described later with reference to FIGS.
- FIG. 2 is a diagram showing details of the first PLC 1 and the information terminal device 4 constituting the load distribution system 20 of FIG.
- FIG. 2 also shows the maintenance terminal device 5 and the second PLC 6.
- FIG. 2 also shows an external database 90 that can communicate with each of the first PLC 1, the information terminal device 4, and the second PLC 6.
- the first PLC 1 includes a memory 10, a program common execution unit 11, an execution result recording unit 12, and a storage unit 13.
- the storage unit 13 stores a program code 14 and an execution schedule 15 related to the execution target program.
- the program code 14 is a code related to a program that cooperates with MES and ERP stored in the memory 42 of the storage device 40 included in the information terminal device 4.
- the program common execution means 11 is a means for executing an execution target program related to the program code 14.
- the execution record recording means 12 is a means for recording the execution time of the program related to the program code 14 together with the identification information of the program code 14 in time series.
- the information terminal device 4 includes a storage device 40, a program information storage unit 43, a signal definition information storage unit 44, an execution time prediction unit 45, a PLC selection unit 46, a program distribution unit 47, and a program common execution unit 48. And load distribution processing means 49.
- the program information storage means 43 stores program information that stores the value of the program code 14 related to the program executed by the first PLC 1.
- the signal definition information storage means 44 stores signal definition information including the name of the signal handled by the first PLC 1 and the connection destination from which the signal value is acquired.
- the execution time predicting means 45 predicts a time required for executing the program when the program is executed next time based on the program information stored in the program information storing means 43.
- the PLC selection unit 46 selects a PLC that executes the program based on the execution time predicted by the execution time prediction unit 45.
- the program distribution unit 47 distributes the program to the PLC selected by the PLC selection unit 46.
- the program common execution means 48 executes a process that allows the program to be executed even with a PLC different from the PLC selected by the PLC selection means 46.
- the execution time prediction unit 45, the PLC selection unit 46, and the program distribution unit 47 may not be provided in the information terminal device 4.
- the functions of the execution time prediction unit 45, the PLC selection unit 46, and the program distribution unit 47 may be realized on the cloud, or may be realized by one or a plurality of PLCs connected to the information terminal device 4.
- the load distribution processing unit 49 will be described later with reference to FIG.
- the operation of the load distribution system 20 includes a procedure for registering a program to be executed by the PLC and a procedure for selecting an optimum PLC from a plurality of PLCs and executing the program.
- FIG. 3 is a flowchart showing a program registration procedure according to the first embodiment.
- the signal definition information storage means 44 of the information terminal device 4 defines a signal handled by the execution target program.
- a signal from the information terminal device 4 is stored in a memory.
- the following equation (1) is an equation showing an example of the program code in the first embodiment.
- the ID indicating the identification number of a product produced by a certain facility is “1234”
- the number of the product is “TAG300”
- the number is stored as a production record in the table TB1 of the database DB1. Is meant to do.
- the table TB1 is provided with two fields. The first field is an ID field indicating a product identification number, and the second field is a COUNT field indicating the number of products produced.
- the signals related to the database are DB1 and TB1
- the signal related to the sensor is TAG300.
- step S2 the signal definition information storage means 44 of the information terminal device 4 registers the destination from which the signal is acquired.
- the destination from which the signal is acquired is a connection destination, and an example of the connection destination is a sensor or a database. That is, the connection destination is a field of a table in the PLC or the external database 90.
- the connection destination Is the first PLC 1 as shown in FIG.
- FIG. 4 is a diagram showing a storage example of signal registration information in the first embodiment.
- a signal name indicating the meaning of the signal an ID for identifying the signal, an address assigned to the signal, and a connection destination from which the signal value is acquired are defined as attributes. .
- the above address is replaced with a field in the database.
- FIG. 4 shows that for the above limit sensor, the signal name is “equipment X production quantity”, the ID for identifying the signal in the system is “TAG300”, and the value is the address D3000 of the first PLC 1. It can be obtained by referring to.
- the signal whose ID is “TAG200” is a signal indicating that the facility X has failed, and the content of the signal whose ID is “TAG200” can be acquired by reading the address D2000 of the second PLC 6.
- FIG. 4 shows that the signal whose ID is “TAG400” is a signal indicating the operation time of the process 1, and the content of the signal is stored in a field called RunTime of the table TB1 of the external database DB1. It shows that.
- the signal definition information storage unit 44 of the information terminal device 4 describes the contents of the program code 14 in the program information storage unit 43 using the design tool 51 of the maintenance terminal device 5. In this case, the signal ID registered in the signal registration information is used.
- step S4 the design tool 51 of the maintenance terminal device 5 registers the program code 14 in the program information storage means 43.
- the design tool 51 registers in the program information storage unit 43 related information indicating which program operates which signal and how.
- An example of an operation is extraction or insertion.
- extraction is expressed as SELECT
- insertion is expressed as INSERT.
- the program information registered in the program information storage unit 43 indicates program attributes. By specifying the program name or the program identification information, it is possible to know which PLC memory address the program is used in, or how the database table is operated by the program.
- FIG. 5 is a diagram showing an example of storing program information in the first embodiment.
- FIG. 5 shows, for example, that the program JOB ⁇ reads the value of the signal TAG007 from the database and writes it in the signal TAG300.
- the signal TAG007 is a production instruction
- the value of the signal TAG007 is obtained by reading the Order part of the field of the table TB1 of the database DB1.
- the signal of the write destination is the signal TAG300
- the signal TAG300 indicates the production number of the equipment X as shown in FIG. 4, so the value of the signal TAG007 is written to the address D3000 of the first PLC1.
- step S5 of FIG. 3 when the registration is completed for all programs (Yes in step S5), the program registration ends. If registration has not been completed for all programs (No in step S5), the process proceeds to step S3.
- FIG. 6 is a flowchart showing a procedure for instructing execution of a program by selecting any one PLC from a plurality of PLCs.
- the execution time prediction unit 45 of the information terminal device 4 reads a registered program from the program information storage unit 43.
- step S102 the execution time predicting means 45 of the information terminal device 4 acquires the predicted time taken until the execution of the currently executed program is completed. If the predicted time is 0, the PLC selecting means 46 determines the information terminal device 4 The PLC with the earliest scheduled execution end time is selected from the execution schedule 15 of the PLC currently connected to. When the predicted time is not 0, the PLC selection unit 46 selects the PLC that is the smallest by adding the predicted time to the scheduled execution end time of the PLC. For example, the predicted time is 40 seconds, the program currently executed in the first PLC 1 is scheduled to end after 20 seconds, and the program currently executed in the second PLC 6 is scheduled to end after 10 seconds. If the program currently being executed in the third PLC 7 is scheduled to end after 80 seconds, the PLC selecting means 46 selects the second PLC 6 and adds 40 to the execution schedule 15 to end the execution. Update the time.
- step S103 the program distribution unit 47 of the information terminal device 4 distributes the program to the PLC selected by the PLC selection unit 46. Distribution is performed according to a general-purpose protocol.
- a general-purpose protocol is HTTP / FTP (Hypertext Transfer Protocol / File Transfer Protocol).
- FIG. 7 is a diagram for explaining program synchronization in the first embodiment.
- a program for handling the first sensor 17 and the second sensor 18 is executed in the first PLC 1, the second PLC 6, and the third PLC 7.
- the signal from the first sensor 17 is input to the second terminal of the I / O terminal unit 16 provided in the first PLC 1, and the signal from the second sensor 18 is the fifth terminal of the I / O terminal unit 16. Input to the terminal.
- the value of the signal input to the first PLC 1 is written to the first address and the fifth address of the local memory 21 of the first PLC 1 by the CPU of the first PLC 1.
- the configuration of the address of the local memory of the second PLC 6 is the same as the configuration of the address of the local memory of the first PLC 1, but the second PLC 6 does not have the I / O terminal unit 16.
- the values measured by the first sensor 17 and the second sensor 18 are not written in the local memory of the PLC 6.
- the first PLC 1, the second PLC 6 and the third PLC 7 have a cyclic memory in the control network 2.
- the cyclic memory is a common memory for the first PLC 1, the second PLC 6, and the third PLC 7.
- the cyclic memory has areas of the first PLC 1, the second PLC 6 and the third PLC 7. That is, the first cyclic memory 19 corresponding to the first PLC 1, the second cyclic memory 61 corresponding to the second PLC 6, and the third cyclic memory 71 corresponding to the third PLC 7 are provided. Exists. When data is written into the first PLC 1 area of the first cyclic memory 19, the data is copied to the first PLC 1 area of the second cyclic memory 61. Similarly, the data is copied to the first PLC 1 area of the third cyclic memory 71.
- step S104 in FIG. 6 the first PLC 1 executes a program.
- the first PLC 1 stores the program ID for identifying the program and the execution start time of the program in the execution result recording means 12 before executing the program.
- the first PLC 1 detects the entry of the program ID after the execution of the program is completed, and stores the execution end time in the execution schedule 15 and records the elapsed time as shown in FIG.
- FIG. 8 is a diagram illustrating a storage example of program execution records in the first embodiment.
- FIG. 8 shows that the execution of the program JOB ⁇ started at 11: 30: 30.5 seconds on June 30, 2015 and ended at 11: 30: 35.0 seconds on June 30, 2015.
- the elapsed time is 4.5 seconds.
- FIG. 9 is a diagram relating to a program execution time prediction process in the first embodiment. As shown in FIG. 9, the program execution time is proportional to the number of connected databases, the number of records, and the number of fields.
- the execution time predicting means 45 statistically analyzes the relationship between the external factor and the execution time function. For example, the execution time predicting unit 45 analyzes the time required for reading data from the memory of a specific PLC. The execution time prediction unit 45 formulates the prediction time based on the causal relationship derived from the analysis result. Formulation is, in other words, modeling. A widely known method is used for modeling. An example of a widely known method is the least square method.
- the execution time Ti of the program is modeled as the following equation (2).
- Ti 1.5 ⁇ (number of databases to be communicated) ⁇ 1000 + 2.2 ⁇ (number of table columns) (2)
- the number of databases is 2 and the number of columns of the table is 1000
- it can be predicted that the program execution time is 5200 ms by using the equation (2).
- a value obtained by adding Ti to the current time is recorded in the execution end time field of the execution schedule 15. In the elapsed time field, 0 is recorded, so that the predicted time and the actual result can be distinguished. If all the programs have been executed, the process ends (Yes in S106). If all the programs have not been executed (No in S106), the process proceeds to Step S101.
- FIG. 10 is a diagram for explaining the load distribution apparatus according to the first embodiment.
- the load distribution apparatus is the information terminal apparatus 4.
- the control device is a PLC. That is, in the first embodiment, the plurality of control devices are the first PLC 1, the second PLC 6, and the third PLC 7.
- Embodiment 1 the following situation is assumed for a plurality of execution target programs and execution times. That is, the plurality of programs to be executed are nine programs of program A1, program A2, program A3, program B1, program B2, program B3, program C1, program C2, and program C3.
- the program A1, the program A2, and the program A3 are type A programs.
- the program B1, the program B2, and the program B3 are type B programs.
- the program C1, the program C2, and the program C3 are type C programs.
- the type A program is a program related to cutting
- the type B program is a program related to machining
- the type C program is a program related to assembly.
- the execution time of the type A program is the execution time a. That is, the execution time of each of the program A1, the program A2, and the program A3 is the execution time a.
- the execution time of the type B program is the execution time b. That is, the execution time of each of the program B1, the program B2, and the program B3 is the execution time b.
- the execution time b is shorter than the execution time a.
- the execution time of the type C program is the execution time c. That is, the execution time of each of the program C1, the program C2, and the program C3 is the execution time c.
- the execution time c is longer than the execution time a.
- the sum of the execution time a and the execution time b is the same as the execution time c.
- the load distribution processing means 49 of the information terminal device 4 includes a specifying means 91, an acquisition means 92, a combination means 93, a prediction means 94, a calculation means 95, a selection means 96, and a control means. 97, load detection means 98, determination means 99, time detection means 79, and storage means 78.
- the specifying unit 91 specifies which of a plurality of types of programs each of a plurality of execution target programs is. Specifically, the specifying unit 91 specifies that the program A1, the program A2, and the program A3 among the plurality of execution target programs are type A programs. The specifying unit 91 specifies that the program B1, the program B2, and the program B3 among the plurality of programs to be executed are type B programs. The specifying unit 91 specifies that the program C1, the program C2, and the program C3 among the programs to be executed are type C programs.
- the acquisition unit 92 acquires information on the execution time of each of a plurality of types of programs. Specifically, the acquisition unit 92 has an execution time a of the type A program, an execution time b shorter than the execution time a, and an execution time of the type C program. Information indicating that the time is an execution time c longer than the execution time a is acquired. As described above, in the first embodiment, since the sum of the execution time a and the execution time b is the same as the execution time c, the acquisition unit 92 determines that the sum of the execution time a and the execution time b is the execution time c. Information indicating that they are the same is also acquired.
- the combination means 93 creates a plurality of combinations when each of the plurality of execution target programs is assigned to one of the first PLC 1, the second PLC 6, and the third PLC 7, which is an example of a plurality of control devices. .
- the combination means 93 is provided in any one of the first PLC1, the second PLC6, and the third PLC7, or in any two of the first PLC1, the second PLC6, and the third PLC7, or all of them.
- a combination is created by assigning at least two programs to be executed having different execution times.
- FIG. 11 is a diagram showing an example of combinations created by the combination means 93 of FIG.
- the combination means 93 creates a plurality of combinations including the five combinations shown in FIGS. 11 (A) to 11 (E). Specifically, as shown in FIG. 11A, the combination means 93 assigns the program A1, the program B1, and the program C1 to the first PLC1, and the program A2, the program B2, and the program C2 to the second PLC6. A combination is created in which program A3, program B3, and program C3 are allocated to the third PLC 7.
- “1-PLC” means the first PLC 1
- “2-PLC” means the second PLC 6
- “3-PLC” means the third PLC 7.
- the program A1, the program B2, and the program C2 are assigned to the first PLC1, and the program B1, the program A2, and the program A3 are assigned to the second PLC6. Then, one combination is created in which the program C1, the program B3, and the program C3 are assigned to the third PLC 7.
- the combination means 93 assigns program A1, program A2 and program C3 to the first PLC1, assigns program B1, program C2 and program A3 to the second PLC6, One combination in which the program C1, the program B2, and the program B3 are allocated to the third PLC 7 is created.
- the combination means 93 assigns the program A1, the program B2, the program A2, and the program B3 to the first PLC1, and the program B1, the program C2, and the program A3 are assigned to the second PLC6. And a single combination in which the program C1 and the program C3 are assigned to the third PLC 7 is created.
- the combination means 93 assigns the program A1, the program B1, the program C1, the program C2, and the program C3 to the first PLC1, and the program A2, the program A3, the program B2, and the program One combination is created in which B3 is assigned to the second PLC6.
- the predicting unit 94 delays each of the plurality of combinations created by the combining unit 93 until the execution result of the plurality of execution target programs is returned to the distribution source after the plurality of execution target programs are distributed. Predict the total program end time, which is the time. Specifically, the predicting means 94 estimates that the execution time when the same type of program is executed is the same, and obtains the information obtained by the specifying means 91 and the information obtained by the obtaining means 92. Used, a delay time from when a plurality of execution target programs are distributed to a result of execution of the plurality of execution target programs being returned to a distribution source for each of a plurality of combinations created by the combination means 93 Predict the end time of all programs.
- the information obtained by the specifying unit 91 is information for specifying which of a plurality of types of programs each of a plurality of execution target programs is.
- the information acquired by the acquisition unit 92 is information on the execution time of each of a plurality of types of programs.
- FIG. 11 is a diagram showing an example of a combination created by the combination means 93 of FIG. 10 as described above, but it is also a figure showing prediction results of all program end times of a plurality of combinations created by the combination means 93. is there.
- the total program end time means a delay time from when a plurality of execution target programs are distributed until a result of execution of the plurality of execution target programs is returned to the distribution source.
- the total program end time is the time when the first PLC 1 executes the program A1, the program B1, and the program C1, and is the execution time a, the execution time b, and the execution time c. Total time.
- the execution time when the second PLC 6 executes the program A2, the program B2, and the program C2 is also the same as the execution time when the first PLC1 executes the program A1, the program B1, and the program C1.
- the execution time when the third PLC 7 executes the program A3, the program B3, and the program C3 is also the same as the execution time when the first PLC1 executes the program A1, the program B1, and the program C1.
- the total program end time is the time when the third PLC 7 executes the program C1, the program B3, and the program C3, and is the execution time b and twice the execution time c. Total time.
- the total program end time is the time when the first PLC 1 executes the program A1, the program A2, and the program C3, which is twice the execution time a and the execution time c. Total time.
- the total program end time is the time when the first PLC 1 executes the program A1, the program B2, the program A2, and the program B3, which is twice the execution time a and the execution time. It is the total time with 2 times b.
- the total program end time is the second PLC 6 for the program B1, the program C2, and the program A3. Is the total time of the execution time b, the execution time c, and the execution time a.
- the total program end time is the time when the third PLC 7 executes the program C1 and the program C3, and is also twice the execution time c. Furthermore, the total program end time in the combination of FIG. 11D is the same as the total program end time in the combination of FIG.
- the total program end time is the time when the first PLC 1 executes the program A1, the program B1, the program C1, the program C2, and the program C3, and the execution time a This is the total time of time b and three times execution time c.
- the calculating unit 95 calculates a reference time that is a determination criterion when selecting one combination from a plurality of combinations created by the combining unit 93. Specifically, the calculation means 95 estimates that the execution times when the same type of program is executed are the same, and obtains the information obtained by the specifying means 91 and the information obtained by the acquisition means 92.
- the same type of programs among the plurality of execution target programs is assigned to the same PLC among the first PLC 1, the second PLC 6, and the third PLC 7, which is an example of a plurality of control devices, and a plurality of programs A plurality of programs to be executed are distributed when different types of programs to be executed are assigned to different PLCs of the first PLC 1, the second PLC 6, and the third PLC 7, respectively.
- a reference time that is a delay time from when the execution results of a plurality of execution target programs are returned to the distribution source is calculated.
- FIG. 11 is a diagram showing an example of a combination created by the combination means 93 of FIG. 10 as described above, but is also a figure showing a reference time calculated by the calculation means 95.
- the first PLC 1 executes the program A1, the program A2, and the program A3, the second PLC 6 executes the program B1, the program B2, and the program B3, and the third PLC 7 executes the program C1.
- the calculation means 95 is a delay time from when a plurality of execution target programs are distributed until a result of execution of the plurality of execution target programs is returned to the distribution source in the combination shown in FIG. A reference time is calculated.
- the reference time calculated by the calculation means 95 is three times the execution time c as can be understood from FIG.
- FIG. 11G shows a combination in which nine programs of program A1, program B1, program C1, program A2, program B2, program C2, program A3, program B3, and program C3 are assigned to the first PLC1. ing.
- the selection unit 96 selects one combination that is shorter than the reference time calculated by the calculation unit 95 from the total program end time predicted by the prediction unit 94 from the plurality of combinations created by the combination unit 93.
- the reference time is a criterion for selecting one combination from a plurality of combinations created by the combination means 93.
- the selection unit 96 selects the combination having the shortest total program end time predicted by the prediction unit 94 from among the plurality of combinations created by the combination unit 93. In the example of FIG. 11, the total program end time in the combination of FIG. 11A or FIG. 11D is the shortest. Therefore, the selection unit 96 selects from the plurality of combinations created by the combination unit 93. 11 (A) or the combination of FIG. 11 (D) is selected.
- the selection means 96 When the selection means 96 has a rule that does not select a combination in which a plurality of programs of the same type are assigned to any one PLC, the total program end time and the figure in the combination of FIG. Although the total program end time in the combination of 11 (D) is equal, the selection means 96 selects the combination in FIG. 11 (A). This is because, in the combination of FIG. 11D, a plurality of programs of the same type, that is, the program C1 and the program C3 are assigned to the third PLC 7.
- the selection unit 96 selects the combination whose total program end time predicted by the prediction unit 94 is shorter than the reference time calculated by the calculation unit 95 from among the plurality of combinations created by the combination unit 93. Select one of the following. The total program end time of the combination of FIG. 11B and the total program end time of the combination of FIG. 11C are shorter than the reference time. Therefore, the selection means 96 may select the combination of FIG. 11 (B) or the combination of FIG. 11 (C). In any case, the selection unit 96 selects one combination having a total program end time shorter than the reference time from among a plurality of combinations. Therefore, if the information terminal device 4 which is a load distribution device is used, when a plurality of execution target programs are executed by a plurality of control devices, the effect that the total program end time can be shortened can be obtained.
- the control unit 97 assigns each of the plurality of execution target programs to one of the first PLC 1, the second PLC 6, and the third PLC 7 according to the combination selected by the selection unit 96, thereby The first PLC1, the second PLC6, and the third PLC7 are caused to execute the program.
- the control unit 97 assigns the program A1, the program B1, and the program C1 to the first PLC1, executes them, and executes the program A2, program B2 and program C2 are assigned to the second PLC 6 and executed, and program A3, program B3 and program C3 are assigned to the third PLC 7 and executed.
- the load detection unit 98 detects the load of the first PLC 1.
- the first PLC 1 is an example of a specific control device among a plurality of control devices.
- the determination unit 99 determines whether or not the load detected by the load detection unit 98 is equal to or greater than a threshold for executing a process for distributing the load. When the determination unit 99 determines that the load detected by the load detection unit 98 is equal to or greater than the threshold value, the specifying unit 91, the acquisition unit 92, the combination unit 93, the prediction unit 94, the calculation unit 95, the selection unit 96, The control means 97 performs the function which each has.
- the specifying unit 91, the acquiring unit 92, the combining unit 93, the predicting unit 94, the calculating unit 95, the selecting unit 96, and the control unit 97 determine that the load detected by the load detecting unit 98 is equal to or more than the above threshold value. Even in cases other than those determined by 99, the functions of each may be executed.
- the time detection means 79 detects the actual execution time of each of a plurality of execution target programs.
- the storage unit 78 stores the information obtained by the time detection unit 79.
- the acquisition unit 92 may acquire information on the execution time of each of a plurality of types of programs from the storage unit 78.
- the storage unit 78 stores the actual execution time of each of a plurality of execution target programs executed in the past.
- the acquisition unit 92 estimates that the execution time for the same type of program is the same as the past execution time, and from the information stored in the storage unit 78, information on the execution time of each of the plurality of types of programs. To get. More specifically, it is assumed that the storage unit 78 stores the past execution time of the type A program.
- the acquisition unit 92 determines that the execution time of the type A program to be executed in the future is the same as the past execution time of the type A program stored in the storage unit 78, and the program is a type A program.
- Information on the past execution time of the type A program stored in the storage means 78 as information on the execution time of each of A1, program A2, and program A3 may be acquired.
- the information terminal device 4 may be any one of the first PLC 1, the second PLC 6, and the third PLC 7, each of which is an example of a plurality of control devices. Create multiple combinations when assigned.
- the information terminal device 4 is a delay time from when the plurality of execution target programs are distributed to the result of execution of the plurality of execution target programs being returned to the distribution source for each of the plurality of created combinations. Predict the end time of all programs.
- the information terminal device 4 selects one combination having a predicted total program end time that is shorter than the reference time calculated by the calculation means 95 from the plurality of generated combinations. Thereby, the information terminal device 4 can make the total program end time shorter.
- the selection means 96 of the information terminal device 4 selects the combination with the shortest total program end time from among the plurality of combinations created, the information terminal device 4 can make the total program end time the shortest.
- the combination means 93 is one of the first PLC 1, the second PLC 6, and the third PLC 7, each of which is an example of a plurality of control devices. Create multiple combinations when assigned.
- the combination means 93 assigns at least two programs to be executed whose execution times are contradictory to at least one of the first PLC 1, the second PLC 6, and the third PLC 7, which are examples of a plurality of control devices. To create a single combination.
- Two execution target programs whose execution times conflict with each other are the first preset from the top of the plurality of execution target programs when the plurality of execution target programs are arranged in descending order of execution time. And one of a plurality of programs that are lower than the first order and set in advance from the second order to the lowest order.
- the first rank is a rank lower than the highest rank
- the second rank is a rank higher than the lowest rank.
- An example of two execution target programs having opposite execution times is one of the programs with the longest execution time and one of the programs with the shortest execution time among the plurality of execution target programs.
- an example of two execution target programs having opposite execution times is one of a type B program and one of a type C program.
- the reference time is calculated by the calculation means 95.
- the reference time may not be calculated by the calculation means 95 but may be determined in advance.
- the selection unit 96 selects the total program end time predicted by the prediction unit 94 from the plurality of combinations created by the combination unit 93 from a predetermined reference time. Choose one combination that is a short time. If the reference time is appropriately set, the information terminal device 4 can shorten the total program end time.
- the combination means 93 is assigned to one of the first PLC 1, the second PLC 6, and the third PLC 7, each of which is a plurality of execution target programs. Create multiple combinations of cases.
- the combination means 93 includes the first PLC 1, the second PLC 6, and the third PLC in which at least two of the execution target programs out of the plurality of execution target programs are examples of the plurality of control devices. Only one combination assigned to at least one PLC 7 may be created.
- the control unit 97 assigns each of the plurality of execution target programs to one of the first PLC 1, the second PLC 6, and the third PLC 7 in accordance with the combination created by the combination unit 93. Are executed by the first PLC 1, the second PLC 6, and the third PLC 7. Even in this case, the end time of the entire program becomes shorter. Since the two execution target programs whose execution times are contradictory have been described above, description thereof is omitted here.
- examples of the plurality of control devices are the first PLC 1, the second PLC 6, and the third PLC 7.
- the plurality of control devices are not limited to the three PLCs of the first PLC 1, the second PLC 6, and the third PLC 7.
- the plurality of control devices may be two PLCs of the first PLC 1 and the second PLC 6, or may be four or more PLCs.
- the number of the plurality of control devices is determined by, for example, the production cost when used in a situation where a product having a plurality of PLCs is produced.
- FIG. 12 is a diagram showing that at least a part of means constituting the information terminal device 4 of FIG.
- the processing circuit 77 is dedicated hardware. That is, the processing circuit 77 is, for example, a single circuit, a composite circuit, a programmed processor, a parallel programmed processor, an ASIC (Application Specific Integrated Circuit), an FPGA (Field-Programmable Gate Array), or a combination thereof. It is a thing.
- identification means 91 One of identification means 91, acquisition means 92, combination means 93, prediction means 94, calculation means 95, selection means 96, control means 97, load detection means 98, determination means 99, and time detection means 79 constituting the information terminal device 4.
- the unit may be dedicated hardware separate from the rest.
- the part or the whole may be a processor 75 that executes a program stored in the memory 76.
- FIG. 13 is a diagram showing that at least a part of means constituting the information terminal device 4 of FIG.
- the processor 75 is a CPU (Central Processing Unit), a processing device, an arithmetic device, a microprocessor, a microcomputer, or a DSP (Digital Signal Processor).
- the function of at least a part of the means constituting the information terminal device 4 is the processor 75 and software, firmware, or a combination of software and firmware. It is realized by.
- Software or firmware is described as a program and stored in the memory 76.
- the processor 75 reads out and executes the program stored in the memory 76, thereby realizing functions of some means constituting the information terminal device 4.
- the memory 76 for storing the program to become. It can be said that the program stored in the memory 76 causes the computer to execute the procedure or method of some means constituting the information terminal device 4.
- the memory 76 is nonvolatile or volatile, such as RAM (Random Access Memory), ROM (Read Only Memory), flash memory, EPROM (Erasable Programmable Read Only Memory), EEPROM (Electrically Erasable Programmable Read-Only Memory), etc.
- RAM Random Access Memory
- ROM Read Only Memory
- flash memory EPROM (Erasable Programmable Read Only Memory), EEPROM (Electrically Erasable Programmable Read-Only Memory), etc.
- Semiconductor memory magnetic disk, flexible disk, optical disk, compact disk, mini disk, DVD or the like.
- the functions of a plurality of means constituting the information terminal device 4 may be partially realized by dedicated hardware, and the rest may be realized by software or firmware.
- the plurality of means constituting the information terminal device 4 can realize the functions of the plurality of means constituting the information terminal device 4 by hardware, software, firmware, or a combination thereof.
- the configuration described in the above embodiment shows an example of the contents of the present invention, and can be combined with another known technique, and can be combined with other configurations without departing from the gist of the present invention. It is also possible to omit or change the part.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Programmable Controllers (AREA)
Abstract
Description
図1は、実施の形態1にかかる負荷分散装置を含む負荷分散システム20の構成図である。実施の形態1にかかる負荷分散装置は、複数の実行対象のプログラムの実行を複数の制御装置に分担させる装置である。実施の形態1では、負荷分散装置は情報端末装置4であり、制御装置はプログラマブルロジックコントローラである。以下では、プログラマブルロジックコントローラを「PLC」と記載する。PLCは、Programmable Logic Controllerの略語である。しかしながら、負荷分散装置及び制御装置は通常のパーソナルコンピュータであってもよい。以下では、パーソナルコンピュータを「PC」と記載する。PCは、Personal Computerの略語である。
図3のフローチャートにしたがって、プログラムの登録の手順を説明する。図3は、実施の形態1におけるプログラムの登録の手順を示すフローチャートである。ステップS1において、情報端末装置4の信号定義情報記憶手段44は、実行対象のプログラムが扱う信号を定義する。第1のPLC1、第2のPLC6及び第3のPLC7の各々では、情報端末装置4からの信号はメモリに格納される。
DB1.INSERT(TB1,ID=1234,COUNT=TAG300);・・・(1)
式(1)は、ある設備が生産した商品の識別番号を示すIDが「1234」であり、その商品の個数が「TAG300」であって、その個数をデータベースDB1のテーブルTB1に生産実績として格納することを意味している。テーブルTB1には、2つのフィールドが設けられており、一つ目のフィールドは商品の識別番号を示すIDのフィールドであり、二つ目のフィールドは商品の生産個数を示すCOUNTのフィールドである。式(1)のプログラムコードでは、データベースに関する信号はDB1及びTB1であり、センサに関する信号はTAG300である。
図6は、複数のPLCのなかからいずれかひとつのPLCを選択してプログラムの実行を指示する手順を示すフローチャートである。ステップS101において、情報端末装置4の実行時間予測手段45は、プログラム情報記憶手段43から登録されているプログラムを読み出す。
Ti=1.5×(通信するデータベース数)×1000+2.2×(テーブルの列数)・・・(2)
データベース数が2でテーブルの列数が1000である場合、式(2)を用いることにより、プログラム実行時間が5200msであると予測することができる。このとき、実行スケジュール15の実行終了時刻のフィールドには、現在時刻にTiを加えた値が記録される。経過時間のフィールドには0が記録され、それにより、予測時間と実績との区別を行うことができる。すべてのプログラムの実行が終了していれば処理は終了し(S106でYes)、すべてのプログラムの実行が終了していなければ(S106でNo)、処理はステップS101に移行する。
Claims (17)
- 複数の実行対象のプログラムを複数の制御装置に実行させる負荷分散装置において、
前記複数の実行対象のプログラムの各々が複数の種類のプログラムのいずれであるのかを特定する特定手段と、
前記複数の種類のプログラムの各々の実行時間の情報を取得する取得手段と、
前記複数の実行対象のプログラムの各々が前記複数の制御装置のいずれかに割り当てられる場合の複数の組み合わせを作成する組み合わせ手段と、
同一の種類のプログラムが実行される場合の実行時間は同一であると推定し、前記特定手段によって得られた情報と前記取得手段によって取得された情報とを用い、前記組み合わせ手段によって作成された前記複数の組み合わせの各々について、前記複数の実行対象のプログラムが配信されてから前記複数の実行対象のプログラムの実行の結果が配信元に返送されるまでの遅延時間である全プログラム終了時間を予測する予測手段と、
前記組み合わせ手段によって作成された前記複数の組み合わせのなかから、前記予測手段によって予測された前記全プログラム終了時間が基準時間より短い時間であるひとつの組み合わせを選択する選択手段と、
前記選択手段によって選択された前記ひとつの組み合わせにしたがって前記複数の実行対象のプログラムの各々を前記複数の制御装置のいずれかに割り当てて、前記複数の実行対象のプログラムを前記複数の制御装置に実行させる制御手段と
を備えることを特徴とする負荷分散装置。 - 同一の種類のプログラムが実行される場合の実行時間は同一であると推定し、前記特定手段によって得られた情報と前記取得手段によって取得された情報とを用い、前記複数の実行対象のプログラムのうちの同一の種類のプログラムを前記複数の制御装置のうちの同一の制御装置に割り当てると共に前記複数の実行対象のプログラムのうちの互いに異なる種類のプログラムの各々を前記複数の制御装置のうちの互いに異なる制御装置の各々に割り当てた場合に前記複数の実行対象のプログラムが配信されてから前記複数の実行対象のプログラムの実行の結果が配信元に返送されるまでの遅延時間である前記基準時間を算出する算出手段を更に備え、
前記選択手段は、前記組み合わせ手段によって作成された前記複数の組み合わせのなかから、前記予測手段によって予測された前記全プログラム終了時間が前記算出手段によって算出された前記基準時間より短い時間である前記ひとつの組み合わせを選択する
ことを特徴とする請求項1に記載の負荷分散装置。 - 前記組み合わせ手段は、前記複数の制御装置の少なくともひとつに前記実行時間が異なる二つの前記実行対象のプログラムを割り当てることによってひとつの組み合わせを作成する
ことを特徴とする請求項1又は2に記載の負荷分散装置。 - 前記組み合わせ手段は、前記複数の制御装置の少なくともひとつに前記実行時間が相反する二つの前記実行対象のプログラムを割り当てることによってひとつの組み合わせを作成し、
前記実行時間が相反する二つの前記実行対象のプログラムは、前記複数の実行対象のプログラムの各々を前記実行時間が長い順に並べた場合、前記複数の実行対象のプログラムのうちの、最上位からあらかじめ設定された第1の順位までの複数のプログラムのうちのひとつと、前記第1の順位より下位の順位であってあらかじめ設定された第2の順位から最下位までの複数のプログラムのうちのひとつとである
ことを特徴とする請求項1又は2に記載の負荷分散装置。 - 前記実行時間が相反する二つの前記実行対象のプログラムは、前記複数の実行対象のプログラムのうちの、前記実行時間が最も長いプログラムのひとつと前記実行時間が最も短いプログラムのひとつとである
ことを特徴とする請求項4に記載の負荷分散装置。 - 前記複数の制御装置のうちの特定の制御装置の負荷を検出する負荷検出手段と、
前記負荷検出手段によって検出された負荷が負荷を分散する処理を実行するための閾値以上であるか否かを判断する判断手段とを更に備え、
前記負荷検出手段によって検出された負荷が前記閾値以上であると前記判断手段によって判断された場合、前記特定手段、前記取得手段、前記組み合わせ手段、前記予測手段、前記選択手段及び前記制御手段は、各々が有する機能を実行する
ことを特徴とする請求項1から5のいずれか1項に記載の負荷分散装置。 - 前記複数の実行対象のプログラムの各々の実際の実行時間を検出する時間検出手段と、
前記時間検出手段によって得られた情報を記憶する記憶手段とを更に備え、
前記取得手段は、前記記憶手段から前記複数の種類のプログラムの各々の実行時間の情報を取得する
ことを特徴とする請求項1から6のいずれか1項に記載の負荷分散装置。 - 前記選択手段は、前記組み合わせ手段によって作成された前記複数の組み合わせのなかから、前記予測手段によって予測された前記全プログラム終了時間が最も短い組み合わせを選択する
ことを特徴とする請求項1から7のいずれか1項に記載の負荷分散装置。 - 複数の実行対象のプログラムを複数の制御装置に実行させる負荷分散装置において、
前記複数の実行対象のプログラムの各々が複数の種類のプログラムのいずれであるのかを特定する特定手段と、
前記複数の種類のプログラムの各々の実行時間の情報を取得する取得手段と、
前記複数の実行対象のプログラムの各々を前記複数の制御装置のいずれかに割り当てる場合のひとつの組み合わせであって、前記複数の実行対象のプログラムのうちの前記実行時間が相反する二つの前記実行対象のプログラムが前記複数の制御装置の少なくともひとつに割り当てられる前記ひとつの組み合わせを作成する組み合わせ手段と、
前記組み合わせ手段によって作成された前記ひとつの組み合わせにしたがって、前記複数の実行対象のプログラムの各々を前記複数の制御装置のいずれかに割り当てて、前記複数の実行対象のプログラムを前記複数の制御装置に実行させる制御手段とを備え、
前記組み合わせ手段は、同一の種類のプログラムが実行される場合の実行時間は同一であると推定し、前記特定手段によって得られた情報と前記取得手段によって取得された情報とを用いて前記ひとつの組み合わせを作成する
ことを特徴とする負荷分散装置。 - 前記実行時間が相反する二つの前記実行対象のプログラムは、前記複数の実行対象のプログラムの各々を前記実行時間が長い順に並べた場合、前記複数の実行対象のプログラムのうちの、最上位からあらかじめ設定された第1の順位までの複数のプログラムのうちのひとつと前記第1の順位より下位の順位であってあらかじめ設定された第2の順位から最下位までの複数のプログラムのうちのひとつとである
ことを特徴とする請求項9に記載の負荷分散装置。 - 前記実行時間が相反する二つの前記実行対象のプログラムは、前記複数の実行対象のプログラムのうちの、前記実行時間が最も長いプログラムのひとつと前記実行時間が最も短いプログラムのひとつとである
ことを特徴とする請求項10に記載の負荷分散装置。 - プログラムを実行する複数の制御装置を管理する負荷分散装置において、
前記制御装置で実行する複数のプログラムの実行時間をプログラム毎に算出する実行時間算出部と、
前記プログラムを前記制御装置に実行指示させるプログラム実行指示部と、
を備え、
プログラム実行指示部は、複数の制御装置にプログラムを実行指示させた後、各制御装置で実行指示したプログラムの実行予想時間の長さと相反する長さのプログラムを、前記各制御装置に追加で実行指示する
ことを特徴とする負荷分散装置。 - 前記実行時間算定部は、複数のプログラムの実行時間をプログラム毎に記録することにより行い、
前記実行時間は、前記プログラムの実行処理の全プログラム終了時間を含む
ことを特徴とする請求項12に記載の負荷分散装置。 - 前記プログラムの実行は、制御装置に記録されたプログラムを前記プログラム実行指示部からの指示に基づいて実行することを特徴とする請求項12又は13に記載の負荷分散装置。
- 前記プログラムの実行は、前記プログラム実行指示部から前記制御装置に配信されたプログラムを実行することで行われることを特徴とする請求項12又は13に記載の負荷分散装置。
- 前記制御装置におけるプログラムの実行負荷が増大したことを検出した後、前記プログラム実行指示部が機能することを特徴とする請求項12から15のいずれか1項に記載の負荷分散装置。
- プログラムを実行する複数の制御装置を管理する負荷分散装置おいて、
制御装置で実行する複数のプログラムの実行予想時間をプログラム毎に記録する実行予想時間記録部と、
前記プログラムを前記制御装置に実行指示させるプログラム実行指示部と、
を備え、
前記プログラム実行指示部は、複数の制御装置にプログラムを実行指示させた後、各制御装置で実行指示したプログラムの実行予想時間の長さと相反する長さのプログラムを、前記各制御装置に追加で実行指示し、
前記実行予想時間は、前記プログラムの実行処理の全プログラム終了時間を含む
ことを特徴とする負荷分散装置。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2016/054338 WO2017141332A1 (ja) | 2016-02-15 | 2016-02-15 | 負荷分散装置 |
JP2016574030A JP6150956B1 (ja) | 2016-02-15 | 2016-02-15 | 負荷分散装置 |
US15/532,354 US20180095441A1 (en) | 2016-02-15 | 2016-02-15 | Load distribution device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2016/054338 WO2017141332A1 (ja) | 2016-02-15 | 2016-02-15 | 負荷分散装置 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2017141332A1 true WO2017141332A1 (ja) | 2017-08-24 |
Family
ID=59082062
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2016/054338 WO2017141332A1 (ja) | 2016-02-15 | 2016-02-15 | 負荷分散装置 |
Country Status (3)
Country | Link |
---|---|
US (1) | US20180095441A1 (ja) |
JP (1) | JP6150956B1 (ja) |
WO (1) | WO2017141332A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20210119528A (ko) | 2019-03-22 | 2021-10-05 | 미쓰비시덴키 가부시키가이샤 | 정보 처리 장치, 정보 처리 방법 및 기록 매체에 저장된 정보 처리 프로그램 |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3458918A4 (en) * | 2016-05-20 | 2020-01-22 | Georgia Tech Research Corporation | SYSTEMS AND METHODS FOR DETECTING ABNORMAL SOFTWARE ON A PROGRAMMABLE CONTROLLER |
EP3252549B1 (de) * | 2016-05-31 | 2020-06-24 | Siemens Aktiengesellschaft | Verfahren zum betreiben einer automatisierungseinrichtung sowie automatisierungseinrichtung |
JP6356736B2 (ja) * | 2016-06-29 | 2018-07-11 | ファナック株式会社 | コントローラシステムおよび制御方法 |
US11696528B2 (en) * | 2019-10-11 | 2023-07-11 | Deere & Company | Settings propagation and synchronization across mobile work machines |
US11899564B2 (en) * | 2022-05-19 | 2024-02-13 | Renesas Electronics Corporation | Debug apparatus and recording medium |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0991011A (ja) * | 1995-09-26 | 1997-04-04 | Omron Corp | 負荷分散装置および方法 |
JP2012059078A (ja) * | 2010-09-09 | 2012-03-22 | Fuji Electric Co Ltd | Plcシステム、その開発支援装置 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100397760B1 (ko) * | 1998-04-27 | 2003-09-13 | 가부시끼가이샤 디지탈 | 제어시스템, 표시장치 및 제어용 호스트 컴퓨터 및 데이터전송방법 |
JP2003337793A (ja) * | 2002-03-15 | 2003-11-28 | Omron Corp | ネットワークシステム及びネットワークシステムの通信方法 |
JP4877423B1 (ja) * | 2011-03-15 | 2012-02-15 | オムロン株式会社 | Plcのcpuユニット、plc用システムプログラムおよびplc用システムプログラムを格納した記録媒体 |
US9389606B2 (en) * | 2011-11-11 | 2016-07-12 | Rockwell Automation Technologies, Inc. | Agile control model system and method |
JP6375666B2 (ja) * | 2014-03-31 | 2018-08-22 | 株式会社ジェイテクト | Plcおよびplc用のプログラミングツール |
KR101627489B1 (ko) * | 2014-04-25 | 2016-06-03 | 미쓰비시덴키 가부시키가이샤 | 기능 유닛, 아날로그 입력 유닛, 프로그래머블 컨트롤러 시스템 |
-
2016
- 2016-02-15 US US15/532,354 patent/US20180095441A1/en not_active Abandoned
- 2016-02-15 WO PCT/JP2016/054338 patent/WO2017141332A1/ja active Application Filing
- 2016-02-15 JP JP2016574030A patent/JP6150956B1/ja not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0991011A (ja) * | 1995-09-26 | 1997-04-04 | Omron Corp | 負荷分散装置および方法 |
JP2012059078A (ja) * | 2010-09-09 | 2012-03-22 | Fuji Electric Co Ltd | Plcシステム、その開発支援装置 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20210119528A (ko) | 2019-03-22 | 2021-10-05 | 미쓰비시덴키 가부시키가이샤 | 정보 처리 장치, 정보 처리 방법 및 기록 매체에 저장된 정보 처리 프로그램 |
DE112019006890T5 (de) | 2019-03-22 | 2021-11-18 | Mitsubishi Electric Corporation | Informationsverarbeitungsvorrichtung, Computer, Computersystem, Informationsverarbeitungsverfahren und Informationsverarbeitungsprogramm |
Also Published As
Publication number | Publication date |
---|---|
JP6150956B1 (ja) | 2017-06-21 |
US20180095441A1 (en) | 2018-04-05 |
JPWO2017141332A1 (ja) | 2018-02-22 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP6150956B1 (ja) | 負荷分散装置 | |
Glock et al. | Decision support models for production ramp-up: a systematic literature review | |
Cannella et al. | Metrics for bullwhip effect analysis | |
Sürie et al. | Supply chain analysis | |
US9733627B2 (en) | Cloud computing system and method for advanced process control | |
JP6622592B2 (ja) | 生産計画立案支援システムおよび支援方法 | |
JP5779537B2 (ja) | 生産シミュレーション装置、生産シミュレーション方法及び、生産シミュレーションプログラム | |
Barkokebas et al. | Assessment of digital twins to reassign multiskilled workers in offsite construction based on lean thinking | |
JP5478545B2 (ja) | 作業者配置支援装置 | |
JP2013131259A (ja) | 統合需要予測装置、統合需要予測方法、及び統合需要予測プログラム | |
JP2014225068A (ja) | 生産指標抽出装置及びプログラム | |
Windheim et al. | Towards a decision-making framework for multi-criteria product modularization in cooperative environments | |
US20200193337A1 (en) | Process estimation apparatus and method | |
Pinho et al. | Forest-based supply chain modelling using the SimPy simulation framework | |
Olender et al. | Practical approach of flexible job shop scheduling using costs and finishing times of operations | |
JP6151435B2 (ja) | 倉庫収益シミュレーション装置 | |
Pfeiffer et al. | Simulation as one of the core technologies for digital enterprises: assessment of hybrid rescheduling methods | |
KR102096595B1 (ko) | 모니터 지원 장치, 모니터 지원 방법 및 모니터 지원 프로그램 | |
US20110010689A1 (en) | System for Writing a Simulation Program | |
JP7039232B2 (ja) | 技術情報共有システム及び技術情報共有方法 | |
Bruetzel et al. | Automated Production Network Planning Under Uncertainty by Developing Representative Demand Scenarios | |
Duffie | Control Theory Applications for Dynamic Production Systems: Time and Frequency Methods for Analysis and Design | |
JP2020190980A (ja) | 劣化推定装置、劣化推定システム、劣化推定方法および劣化推定プログラム | |
CN108111573A (zh) | 控制服务器 | |
Joseph et al. | Development of simulation-based metamodels for the analysis of routing flexibility, sequencing flexibility and scheduling decision rules on the performance of an FMS |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ENP | Entry into the national phase |
Ref document number: 2016574030 Country of ref document: JP Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 15532354 Country of ref document: US |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 16890475 Country of ref document: EP Kind code of ref document: A1 |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 16890475 Country of ref document: EP Kind code of ref document: A1 |