WO2019207679A1 - モニタ支援装置、プログラマブルロジックコントローラ、モニタ支援方法およびモニタ支援プログラム - Google Patents
モニタ支援装置、プログラマブルロジックコントローラ、モニタ支援方法およびモニタ支援プログラム Download PDFInfo
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- WO2019207679A1 WO2019207679A1 PCT/JP2018/016792 JP2018016792W WO2019207679A1 WO 2019207679 A1 WO2019207679 A1 WO 2019207679A1 JP 2018016792 W JP2018016792 W JP 2018016792W WO 2019207679 A1 WO2019207679 A1 WO 2019207679A1
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- 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
- G05B19/058—Safety, monitoring
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- 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
-
- 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
- G05B19/054—Input/output
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- 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
- G05B19/056—Programming the PLC
-
- 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
- G05B2219/13—Plc programming
- G05B2219/13142—Debugging, tracing
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- 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
- G05B2219/13—Plc programming
- G05B2219/13174—Pc, computer connected to plc to simulate machine
Definitions
- the present invention relates to a monitor support device, a programmable logic controller, a monitor support method, and a monitor support program having a function of monitoring the state of a programmable logic controller (PLC).
- PLC programmable logic controller
- An industrial controller generally called PLC is used to control production equipment in a factory.
- the storage area of the PLC stores values such as data input from the outside to the PLC, data output from the PLC to the outside, and data used when executing the control program.
- the control program executed by the PLC can use the data stored in each storage area.
- the user may check the values stored in the storage area.
- Patent Document 1 discloses a technique of displaying a history of values stored in a storage area in a graph along with a control program in order to improve the control program modification work efficiency.
- values stored in each storage area are periodically collected, and history information is generated in association with the collection time.
- the present invention has been made in view of the above, and an object of the present invention is to obtain a monitor support device capable of easily confirming the operation of a control program.
- the monitor support apparatus executes an instruction each time a plurality of instructions included in a control program executed by a programmable logic controller is executed.
- the monitor support device has an effect that the operation of the control program can be easily confirmed.
- the figure which shows an example of the control program which PLC shown in FIG. 1 uses The figure which shows the monitor range designation
- movement of the data acquisition part shown in FIG. The flowchart which shows operation
- movement of the monitor data management part shown in FIG. The figure which shows the structure for implement
- monitor support device a programmable logic controller, a monitor support method, and a monitor support program according to an embodiment of the present invention will be described in detail with reference to the drawings. Note that the present invention is not limited to the embodiments.
- FIG. 1 is a diagram showing a configuration of a monitor support system 100 according to the first embodiment of the present invention.
- the monitor support system 100 includes a PLC 10 and a monitor support device 20.
- the PLC 10 is a control device used to control production equipment such as a factory, and can control a machine tool (not shown) by executing a control program.
- the monitor support device 20 is a program creation device that creates a control program executed by the PLC 10, and has a function of monitoring the state of the PLC 10.
- the PLC 10 includes a program execution unit 1, a storage unit 2, a monitor data management unit 3, and a monitor data storage unit 4.
- the program execution unit 1 executes a control program and controls a machine tool and the like.
- the program execution unit 1 can update the value stored in the storage area of the storage unit 2 when executing the control program.
- the program execution unit 1 Each time the program execution unit 1 executes an instruction included in the control program, the program execution unit 1 notifies the monitor data management unit 3 of information for specifying the executed instruction.
- the storage unit 2 has a plurality of storage areas to which the types of data to be stored are assigned in advance.
- the program execution unit 1 can write data to each storage area of the storage unit 2 and read data from each storage area by using the address of the storage unit 2. This storage area can be written to and read from the outside of the PLC 10, thereby enabling data transmission / reception with the outside of the PLC 10.
- the storage unit 2 can also store data values used when the program execution unit 1 is executing a control program.
- the storage area of the storage unit 2 can be described using characters indicating data types and addresses. For example, the character indicating input data is defined as X, the character indicating output data as Y, the character indicating internally used bit data as M, the character indicating word data as D, and the like. In this case, the address 0 in the storage area for storing the input data is expressed as “X0”.
- FIG. 2 is a diagram showing an example of a control program used by the PLC 10 shown in FIG.
- the control program used by the PLC 10 is also called a sequence program, and is described using variables, addresses of storage areas of the storage unit 2, numerical values, instructions, and the like.
- the control program includes a plurality of instructions.
- the first line of the control program shown in FIG. 2 shows an operation of copying the value “1” to the storage area D0 when the value of the storage area M0 is “ON”.
- the second line of the control program shows an operation of copying the value “2” to the storage area D0 when the value of the storage area M1 is “ON”.
- the third line of the control program shows an operation of copying the value “3” to the storage area D0 when the value of the storage area M2 is “ON”.
- the fourth line of the control program shows an operation of adding “1” to the value stored in the storage area D1 when the value of the storage area M3 is “ON”.
- the fifth line of the control program shows an operation of copying the value “1” to the storage area D0 when the value of the storage area M0 is “ON”.
- the sixth line of the control program shows an operation of copying the value “2” to the storage area D0 when the value of the storage area M1 is “ON”.
- the control program shown in FIG. 2 includes a plurality of instructions, an execution condition for each instruction, and an address of a storage area updated by the instruction.
- the command indicates the minimum unit of contents to be controlled by the PLC 10.
- the instruction is “add”
- the execution condition of the instruction is “the value of the storage area M3 is ON”
- the address of the storage area updated by the instruction Is the storage area D1.
- the monitor data management unit 3 generates monitor data that is a value stored in a storage area to be monitored when an instruction included in the control program is executed in accordance with an instruction from the monitor support device 20.
- the storage area to be monitored is a storage area used by the instruction. Specifically, the storage area in which the result of executing the instruction is stored, and the storage that is referred to for determining whether or not to execute the instruction are stored. Area.
- the monitor data management unit 3 stores the generated monitor data in the monitor data storage unit 4 and transmits it to the monitor support device 20.
- the monitor data management unit 3 obtains a value stored in the storage area of the storage unit 2 in accordance with the timing at which the information for specifying the executed instruction is notified from the program execution unit 1, thereby controlling the monitor data management unit 3.
- the monitor data can be generated in accordance with the timing when the instructions included in the program are executed.
- the monitor data management unit 3 associates the executed instruction with the monitor data, which is a value stored in the storage area used by the instruction, and stores it in the monitor data storage unit 4, and also monitors the monitor support device 20. Send to.
- the monitor data management unit 3 can also associate the monitor data with the time information when the monitor data is acquired.
- the monitor data storage unit 4 stores the monitor data input from the monitor data management unit 3 in association with information for specifying an instruction and the time when the monitor data is acquired. Since the value stored in the storage area of the storage unit 2 is rewritten by execution of an instruction or input data from the outside of the PLC 10 and the like, the monitor data storage unit 4 has a control function. The timing value at which the instruction included in the program is executed is held.
- the monitor support device 20 is provided as a software tool that operates on a personal computer, and the PLC 10 supports editing of a control program for controlling the facility, or the PLC 10 is connected to the monitor support device 20 to control the control program. It has a function of confirming the operating state and transferring the edited control program to the PLC 10.
- the monitor support device 20 includes a data acquisition unit 5, a display data storage unit 6, and a display control unit 7.
- the data acquisition unit 5 acquires monitor data for confirming the operation of the PLC 10 from the PLC 10.
- the data acquisition unit 5 includes a range specification unit 51 that specifies a range for acquiring monitor data in the control program, and a storage area that is a monitor target included in the range specified by the range specification unit 51.
- a monitoring target information specifying unit 52 for specifying an address.
- the range specification unit 51 specifies a range to be monitored in the control program.
- the monitor function of the monitor support device 20 is used to check whether the control program is operating as expected, for example, during debugging.
- the range specifying unit 51 can narrow down the range to be monitored as necessary. it can.
- FIG. 3 is a diagram showing a monitor range designation screen 511 displayed on the screen by the range designation unit 51 shown in FIG.
- the range specifying unit 51 can acquire data that the user inputs to the monitor range specifying screen 511 and specify the monitor range using this input data.
- the method of specifying the monitor target range by the range specifying unit 51 is not limited to the example using the monitor range specifying screen 511.
- the range designation unit 51 is not limited to the value input by the user, and may use a range derived using an arbitrary algorithm. For example, the range specifying unit 51 may use a range derived using machine learning.
- the monitoring target information specifying unit 52 specifies a storage area to be monitored from the range specified by the range specifying unit 51 in the control program. For example, when the second to fourth lines are specified as the monitor target range by the range specifying unit 51, the monitor target information specifying unit 52 uses the command from the second to fourth lines of the control program. The storage area that is being used is specified.
- FIG. 4 is a diagram showing the monitor target information specified by the monitor target information specifying unit 52 shown in FIG.
- the monitoring target information specifying unit 52 includes the storage area M1 and the storage area D0 in the second line of the control program, the storage area M2 and the storage area D0 in the third line, and the storage area M3 and the storage area D1 in the fourth line. Can be identified as a monitoring target.
- the monitoring target information specifying unit 52 associates the instruction to be monitored, the storage area in which the result of executing the instruction is stored, and the storage area to be referred to for determining whether to execute the instruction, This is monitored information.
- the monitoring target information specifying unit 52 transmits the monitoring target information to the PLC 10.
- the data acquisition unit 5 receives the monitor data created by the PLC 10 according to the monitor target information, information indicating an instruction associated with the monitor data, and the time when the monitor data was acquired, and stores it in the display data storage unit 6 To do.
- FIG. 5 is a diagram showing display data stored in the display data storage unit 6 shown in FIG.
- the display data includes the number of lines in the control program, which is information indicating an instruction, monitor data acquired in association with the instruction, and time when the monitor data is acquired.
- the monitor data management unit 3 of the PLC 10 acquires monitor data every time an instruction is executed and transmits the monitor data to the monitor support device 20, the data acquisition unit 5 acquires monitor data every time an instruction is executed. become. Since the data acquisition unit 5 stores the monitor data in the display data storage unit 6 every time monitor data is acquired from the PLC 10, the monitor data stored in the display data storage unit 6 is updated each time an instruction is executed. It will be.
- the display control unit 7 can display the control program and the value of the monitor data when the command included in the control program is executed on the screen.
- the display control unit 7 includes a program display unit 71, a monitor data update unit 72, a history display unit 73, and a highlight display unit 74.
- the display control unit 7 includes a display device, and may display a control program, monitor data, and the like on the screen of the display device.
- the display control unit 7 is connected to an external display device and is externally connected. Control programs, monitor data, and the like may be displayed on the screen of the display device.
- the program display unit 71 displays the control program on the screen. As shown in FIG. 2, the program display unit 71 can display the control program in the form of a ladder diagram simulating a relay circuit.
- the monitor data update unit 72 can display the monitor data on the screen by superimposing it on the control program displayed by the program display unit 71 using the monitor data stored in the display data storage unit 6. At this time, the monitor data update unit 72 displays the instruction included in the control program in association with the monitor data acquired in association with this instruction. The monitor data update unit 72 can display the latest value for each combination of instruction and storage area on the screen among the monitor data stored in the display data storage unit 6.
- FIG. 6 is a diagram showing a screen displayed by the monitor data update unit 72 superimposed on the control program displayed by the program display unit 71 shown in FIG.
- the monitor data values are displayed superimposed on the second to fourth lines of the control program.
- Monitor data which is a value stored in the storage area, is displayed superimposed on a display indicating the storage area in the control program. The user viewing this screen confirms that the value of the storage area M1 is “ON” and the value “2” is copied to the storage area D0 when the second line of the control program is executed last. be able to.
- the display control unit 7 has a function of displaying history information of monitor data on the screen.
- the history display unit 73 When a plurality of values of the same monitor data associated with the same command are stored in the display data storage unit 6 when the history display instruction 73 detects a history display instruction, the history display unit 73 outputs a plurality of monitor data as history information. Can be displayed.
- FIG. 7 is a diagram showing history information displayed by the history display unit 73 shown in FIG.
- the history display unit 73 detects a selection operation for a storage area described for each instruction in the control program, the history display unit 73 can display a history of values stored in the selected storage area on the screen.
- the method of displaying history information by the history display unit 73 is not limited to the example shown in FIG.
- the history display unit 73 may display histories in a plurality of storage areas at the same time, and the number of histories is not limited to three, but can be an arbitrary number. Displaying the history of values stored in the storage area for each combination of the instruction and the storage area makes it easy to grasp the relationship between the instruction and the value stored in the storage area used by the instruction.
- the highlighting unit 74 has a function of highlighting the monitor data displayed on the control program. Using the time information stored in the display data storage unit 6, the highlight display unit 74 can sequentially change the monitor data to be highlighted in accordance with the order in which the storage areas are used. At this time, the order of changing the monitor data to be highlighted may be the order from the newest to the oldest based on the order in which the storage areas were used, or the order from the oldest to the newest. May be.
- FIG. 8 is a diagram for explaining the operation of the highlight display unit 74 shown in FIG.
- the highlighting unit 74 highlights the portion of the storage area M3 in the fourth row, and then displays the storage area M2 in the third row as shown in FIG. 8B.
- the portion is changed to the highlighted state, and then the portion of the storage area D0 in the second row is highlighted as shown in FIG. 8C, and the second row is shown in FIG. 8D.
- the storage area M1 is changed to a highlighted state.
- the highlighting unit 74 highlights the monitor data in order from the newest to the oldest.
- the value of the storage area M2 in the third row is “OFF”, and in the third row, the process of copying the value “3” to the storage area D0 is omitted. Therefore, highlighting is also omitted.
- the monitor support device 20 will be described separately for an operation of acquiring monitor data and an operation of displaying.
- FIG. 9 is a flowchart showing the operation of the data acquisition unit 5 shown in FIG.
- the range specifying unit 51 of the data acquiring unit 5 displays an input screen as shown in FIG. 3, for example, and acquires information indicating the range specified as a monitoring target by detecting an input operation on the input screen. (Step S101).
- the monitoring target information specifying unit 52 of the data acquisition unit 5 is a result of execution of a monitoring target command from a control program within the monitoring target range based on the information indicating the monitoring target range acquired by the range specifying unit 51. Is stored, and the storage area referred to in order to determine whether or not to execute the instruction to be monitored is extracted, and monitoring target information specifying the monitor data to be acquired is generated (step S102).
- the monitoring target information is, for example, information corresponding to a state where the time and value columns in the table shown in FIG. 5 are blank.
- the monitoring target information specifying unit 52 transmits the generated monitoring target information to the PLC 10 (step S103). Subsequently, the data acquisition unit 5 determines whether or not monitor data is received from the PLC 10 that is the transmission destination of the monitor target information (step S104). When the monitor data is not received (step S104: No), the data acquisition unit 5 repeats the process of step S104 until the monitor data is received.
- the data acquisition unit 5 stores the received monitor data in the display data storage unit 6 as display data (step S105).
- FIG. 10 is a flowchart showing the operation of the display control unit 7 shown in FIG.
- the program display unit 71 of the display control unit 7 displays the control program on the screen.
- the monitor data update unit 72 determines whether or not a predetermined display data update time has elapsed (step S201). When the display data update time has not elapsed (step S201: No), the monitor data update unit 72 repeats the process of step S201 until the display data update time has elapsed.
- the monitor data update unit 72 displays the latest value of the monitor data on the screen for each command included in the control program (step S202).
- the highlighting unit 74 determines whether or not a highlighting operation for instructing highlighting has been detected (step S203). When the highlighting operation is detected (step S203: Yes), the highlighting unit 74 moves the highlighting position based on the order in which the storage areas are used (step S204). When the highlight operation is not detected (step S203: No), the process of step S204 is omitted.
- the history display unit 73 determines whether or not a history display operation for instructing history display has been detected (step S205). When a history display operation is detected (step S205: Yes), the history display unit 73 generates history information from the data stored in the display data storage unit 6 and displays it on the screen (step S206). When the history display operation is not detected (step S205: No), the process of step S206 is omitted.
- the monitor data update unit 72 updates the monitor data to be displayed at a fixed cycle. However, if the timing at which the value of the display data storage unit 6 is updated is known, the monitor data update unit 72 displays the data for each update. Monitor data to be updated may be updated.
- the order in which the display control unit 7 operates is not limited to the example shown in FIG. The processing of step S201 and step S202, the processing of step S203 and step S204, and the processing of step S205 and step S206 may be performed at the same time, and the order of execution may be switched.
- FIG. 11 is a flowchart showing the operation of the monitor data management unit 3 shown in FIG.
- the monitor data management unit 3 receives the monitoring target information (step S301).
- the monitor data management unit 3 secures a storage area for storing the monitor data in the monitor data storage unit 4 based on the received monitoring target information (step S302).
- the monitor data management unit 3 determines whether or not the information command for specifying the executed command has been executed based on the presence / absence of information for specifying the executed command notified from the program execution unit 1 (Step S303).
- step S303: No If the command is not executed (step S303: No), the monitor data management unit 3 repeats the process of step S303.
- step S303: Yes the monitor data management unit 3 records the value stored in the storage area in the storage unit 2 based on the monitoring target information to generate monitor data (step S303). S304).
- the monitor data management unit 3 transmits the generated monitor data to the monitor support device 20 (step S305).
- the monitor data management unit 3 determines whether or not the execution of the control program has ended (step S306). When the execution of the control program ends (step S306: Yes), the monitor data management unit 3 ends the process. If the execution of the control program has not ended (step S306: No), the monitor data management unit 3 returns to the process of step S303 and repeats the processes of step S303 to step S306 until the execution of the control program ends.
- the functions of the PLC 10 and the monitor support device 20 may be realized using software, or dedicated hardware may be used.
- FIG. 12 is a diagram showing a configuration for realizing the functions of the PLC 10 and the monitor support apparatus 20 shown in FIG. 1 using software.
- Each function of the PLC 10 and the monitor support device 20 can be realized by the processor 91 reading and executing the computer program stored in the memory 92.
- the processor 91 is a CPU (Central Processing Unit) and is also called a central processing unit, a processing unit, an arithmetic unit, a microprocessor, a microcomputer, a DSP (Digital Signal Processor), or the like.
- CPU Central Processing Unit
- DSP Digital Signal Processor
- the memory 92 is, for example, a nonvolatile or volatile semiconductor memory such as RAM (Random Access Memory), ROM (Read Only Memory), flash memory, EPROM (Erasable Programmable ROM), EEPROM (registered trademark) (Electrically EPROM), Magnetic disks, flexible disks, optical disks, compact disks, mini disks, DVDs (Digital Versatile Disks), etc.
- RAM Random Access Memory
- ROM Read Only Memory
- flash memory EPROM (Erasable Programmable ROM), EEPROM (registered trademark) (Electrically EPROM), Magnetic disks, flexible disks, optical disks, compact disks, mini disks, DVDs (Digital Versatile Disks), etc.
- EPROM Erasable Programmable ROM
- EEPROM registered trademark
- Magnetic disks Magnetic disks
- flexible disks flexible disks
- optical disks compact disks
- mini disks mini disks
- DVDs Digital Versatile Disks
- FIG. 13 is a diagram showing a configuration of dedicated hardware for realizing the functions of the PLC 10 and the monitor support device 20 shown in FIG.
- the functions of the PLC 10 and the monitor support device 20 can also be realized by using a processing circuit 93 that is dedicated hardware.
- the processing circuit 93 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.
- the computer program for realizing the functions of the PLC 10 and the monitor support device 20 can be provided via a communication medium, or can be provided in the form of a recording medium on which the computer program is recorded. .
- the monitor support apparatus 20 As described above, each time the PLC 10 executes an instruction included in the control program, the monitor support apparatus 20 according to the present embodiment is stored in the storage area in which the execution result of the executed instruction is stored. The monitor value is recorded and the monitor data is generated. The monitor data is stored in association with the executed command, and the display control unit 7 displays the monitor data together with the corresponding command. For this reason, it is possible to reliably display the value stored in the storage area when the instruction is executed, and the user can easily confirm the operation of the control program.
- the value stored in the same storage area in the control program is used multiple times, or when the control program is repeatedly executed, the value of the storage area is acquired at regular time intervals. It may be difficult to understand the correspondence with. Even in such a case, it is necessary to pause the processing of the control program for each instruction when confirming the value stored in the storage area in the control program debugging work or the like by using the above technique. Thus, when the instruction is executed, the value stored in the storage area can be easily confirmed, and the working efficiency is improved.
- the monitor support device 20 has a range specifying unit 51 for specifying a range for acquiring monitor data. For this reason, the amount of data handled by the PLC 10 and the monitor support device 20 can be reduced, which leads to a reduction in processing load and a necessary storage capacity. In addition, since the monitor data to be displayed can be narrowed down to the necessary range, the monitor data displayed on the screen is easy to see, and even when the number of data handled by the control program is large, the user can control the operation of the control program. It becomes easy to confirm.
- 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.
- each of the plurality of instructions included in the control program and the monitor data indicating the value stored in the storage area used by each instruction are the lines in which the instructions are described in the control program. It is directly associated using a number.
- the information for associating the command with the monitor data is not limited to such an example. For example, whenever the data acquisition unit 5 acquires monitor data in association with time each time an instruction is executed and the program execution unit 1 records the time at which each instruction is executed, the instruction and monitor are indirectly monitored. Data can be associated.
- 1 program execution unit 2 storage unit, 3 monitor data management unit, 4 monitor data storage unit, 5 data acquisition unit, 6 display data storage unit, 7 display control unit, 10 PLC, 20 monitor support device, 51 range specification unit, 52 monitor target information specifying part, 71 program display part, 72 monitor data update part, 73 history display part, 74 highlight display part, 91 processor, 92 memory, 93 processing circuit, 100 monitor support system, 511 monitor range designation screen.
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Abstract
Description
図1は、本発明の実施の形態1にかかるモニタ支援システム100の構成を示す図である。モニタ支援システム100は、PLC10と、モニタ支援装置20とを有する。
Claims (15)
- プログラマブルロジックコントローラに実行させる制御プログラムに含まれる複数の命令のそれぞれが実行される毎に、前記命令が実行された結果が記憶される記憶領域に記憶されている値をモニタデータとして、前記命令と対応づけて取得するデータ取得部と、
前記制御プログラムに含まれる複数の命令と、前記データ取得部によって取得された前記モニタデータとを画面上に表示する表示制御部と、
を備えることを特徴とするモニタ支援装置。 - 前記データ取得部は、前記制御プログラム内の前記モニタデータを取得する範囲を指定する範囲指定部を有し、指定された範囲に含まれる前記命令が実行された結果が記憶される記憶領域に記憶されている値を前記モニタデータとして取得することを特徴とする請求項1に記載のモニタ支援装置。
- 前記データ取得部は、前記モニタデータを当該モニタデータが取得された時刻と対応づけて取得し、
前記命令と、前記命令と対応づけて取得されたモニタデータと、当該モニタデータが取得された時刻とを対応づけて記憶する表示データ記憶部、
をさらに備えることを特徴とする請求項1または2に記載のモニタ支援装置。 - 前記表示制御部は、前記表示データ記憶部に記憶されたモニタデータを用いて、前記画面上に表示されたモニタデータの履歴を前記命令毎に前記画面上に表示する履歴表示部を有することを特徴とする請求項3に記載のモニタ支援装置。
- 前記表示制御部は、前記制御プログラムを前記画面上に表示し、表示した前記制御プログラムに重畳して、前記モニタデータの履歴を前記画面上に表示することを特徴とする請求項4に記載のモニタ支援装置。
- 前記履歴表示部は、前記画面上に表示された複数のモニタデータのうち、選択されたモニタデータの履歴を、前記選択されたモニタデータに重畳して表示することを特徴とする請求項5に記載のモニタ支援装置。
- 前記表示制御部は、前記画面上に表示された複数のモニタデータを、当該モニタデータが取得された時刻に従って、順番に強調表示する強調表示部をさらに有することを特徴とする請求項3に記載のモニタ支援装置。
- 前記表示制御部は、前記制御プログラムを前記画面上に表示し、表示した前記制御プログラムに重畳して前記モニタデータを前記画面上に表示し、
前記強調表示部は、前記画面上に表示された複数の前記モニタデータのうち強調表示するモニタデータを順次変化させることを特徴とする請求項7に記載のモニタ支援装置。 - 前記表示制御部は、前記表示データ記憶部に記憶されたモニタデータの中から、命令毎の最新値を前記画面上に表示することを特徴とする請求項3に記載のモニタ支援装置。
- 前記表示制御部は、表示した前記制御プログラムに重畳して前記最新値を表示することを特徴とする請求項9に記載のモニタ支援装置。
- 前記データ取得部は、前記命令を実行するか否かを判断するために参照した記憶領域の値を前記命令と対応づけて前記モニタデータとして取得することを特徴とする請求項1から10のいずれか1項に記載のモニタ支援装置。
- 制御プログラムを実行するプログラム実行部と、
記憶するデータの種類が割り当てられた複数の記憶領域を有する記憶部と、
前記プログラム実行部が前記制御プログラムに含まれる命令を実行する毎に、前記命令が実行された結果が記憶される前記記憶領域に記憶されている値をモニタデータとして取得し、前記モニタデータを表示するモニタ支援装置に前記モニタデータと前記命令とを対応づけて送信するモニタデータ管理部と、
を備えることを特徴とするプログラマブルロジックコントローラ。 - 前記モニタデータ管理部は、取得する対象のモニタデータを指定するモニタ対象情報を前記モニタ支援装置から受信し、受信した前記モニタ対象情報に基づいて、前記モニタデータを取得することを特徴とする請求項12に記載のプログラマブルロジックコントローラ。
- 記憶するデータの種類が割り当てられた複数の記憶領域を有するプログラマブルロジックコントローラと、当該プログラマブルロジックコントローラの前記記憶領域に記憶されている値をモニタするモニタ支援装置とを備えるモニタ支援システムにおいて、
前記プログラマブルロジックコントローラが実行する制御プログラムに含まれる複数の命令のそれぞれを、前記プログラマブルロジックコントローラが実行する毎に、前記命令が実行された結果が記憶される記憶領域に記憶されている値をモニタデータとして、前記命令と対応づけて取得するステップと、
前記プログラマブルロジックコントローラが、実行された命令を特定するための情報と、当該命令に対応づけられた前記モニタデータとを前記モニタ支援装置に送信するステップと、
前記モニタ支援装置が、前記実行された命令を特定するための情報と、当該命令に対応づけられた前記モニタデータとを受信するステップと、
前記モニタ支援装置が、前記制御プログラムに含まれる複数の命令のそれぞれと、前記複数の命令のそれぞれに対応づけられた前記モニタデータとを画面上に表示するステップと、
を含むことを特徴とするモニタ支援方法。 - プログラマブルロジックコントローラに実行させる制御プログラムに含まれる複数の命令のそれぞれが実行される毎に、前記命令が実行された結果が記憶される記憶領域に記憶されている値をモニタデータとして、前記命令と対応づけて取得するステップと、
前記制御プログラムに含まれる複数の命令と、前記複数の命令のそれぞれに対応づけらえた前記モニタデータとを画面上に表示するステップと、
をコンピュータに実行させることを特徴とするモニタ支援プログラム。
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