WO2017047149A1 - Input/output control device, input/output control method, and monitoring control system - Google Patents

Input/output control device, input/output control method, and monitoring control system Download PDF

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WO2017047149A1
WO2017047149A1 PCT/JP2016/062427 JP2016062427W WO2017047149A1 WO 2017047149 A1 WO2017047149 A1 WO 2017047149A1 JP 2016062427 W JP2016062427 W JP 2016062427W WO 2017047149 A1 WO2017047149 A1 WO 2017047149A1
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command
output
controller
input
processing unit
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PCT/JP2016/062427
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French (fr)
Japanese (ja)
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利夫 内田
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株式会社東芝
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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
    • G05B23/00—Testing or monitoring of control systems or parts thereof
    • G05B23/02—Electric testing or monitoring

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  • Embodiments described herein relate generally to an input / output control device, an input / output control method, and a monitoring control system.
  • a monitoring control system including a controller such as a PLC (programmable logic controller) for performing monitoring control of various facilities and plants and a host device connected to the controller via a network (for example, Patent Document 1). ).
  • the controller is connected to a plurality of input devices and output devices, and controls operation ends such as valves connected to output points of the output devices.
  • the output device reads back its own output, thereby diagnosing whether or not the output from the output device is correct (hereinafter, such diagnosis is referred to as output readback diagnosis). ).
  • the problem to be solved by the present invention is that prior to the separation between the output point of the output device and the operation end in order to repair the operation end during the operation of the monitoring control system as described above, To provide an input / output control device, an input / output control method, and a monitoring control system capable of simplifying subsequent measures and confirmation work.
  • the input / output control device is an input / output control device connected between an output device and a controller that controls an operation end via an output device that performs output readback diagnosis.
  • the input / output control device notifies the controller of a command result notification indicating that the output readback diagnosis result of the output device is normal as a command result notification for the command.
  • a notification processing unit for notifying the controller of the output readback diagnosis result of the output device is provided as a command result notification for the command.
  • FIG. 1 is a schematic diagram illustrating a configuration example of a monitoring control system according to the first embodiment.
  • FIG. 2 is a diagram illustrating the configuration of each of the host device, the controller, the input / output interface device, and the output device in the first embodiment, and the flow of commands or notifications between the devices.
  • FIG. 3 is a diagram illustrating an example of an operation screen and a status display screen in the input / output device provided in the host device according to the first embodiment.
  • FIG. 4 is a flowchart for explaining the operation of the host device when the operator operates the prohibition command and the release command in the host device in the first embodiment.
  • FIG. 5 is a flowchart for explaining the operation of the controller when the controller receives a prohibit command and a cancel command from the host device in the first embodiment.
  • FIG. 6 is a flowchart for explaining the operation of the input / output interface device when the input / output interface device receives a prohibition command and a release command from the controller in the first embodiment.
  • FIG. 7 is a flowchart for explaining the operation of the output readback diagnosis in the output device in the first embodiment.
  • FIG. 8 is a flowchart for explaining the operation of the controller when the controller receives a command result notification of the output device from the input / output interface device in the first embodiment.
  • FIG. 9 is a flowchart for explaining the operation of the host device when the host device receives a command result notification of the output device from the controller in the first embodiment.
  • FIG. 10 is a diagram illustrating a configuration example of a monitoring control system according to the second embodiment.
  • FIG. 11 is a diagram illustrating the configuration of each of the host device, the controller, the input / output interface device, and the output device in the second embodiment, and the flow of commands or notifications between the devices.
  • FIG. 12 is a diagram illustrating an example of an operation screen and a status display screen in the engineering tool according to the second embodiment.
  • FIG. 13 is a diagram illustrating an example of a status display screen in the input / output device provided in the host device according to the second embodiment.
  • FIG. 1 is a schematic diagram illustrating a configuration example of a monitoring control system according to the first embodiment.
  • the controller 2 is connected to the host device 1 via the network 801 to which the controller 2 is connected through the transmission I / F unit 24.
  • the controller 2 has a control unit 20 connected to an input / output interface device (input / output control device) 3 via a dedicated bus 802, and the input / output interface device 3 includes an input device 4 and an output device 7 and an I / O bus 803. Connected through.
  • a plurality of input points 5 provided in the input device 4 are respectively connected to corresponding sensors 6 and the like, and a plurality of output points 8 provided in the output device 7 are respectively connected to operation ends 9 such as corresponding valves. .
  • FIG. 2 is a diagram illustrating the configuration of each of the host device 1, the controller 2, the input / output interface device 3, and the output device 7, and the flow of commands or notifications between the devices.
  • FIG. 3 is a diagram illustrating an example of an operation screen and a status display screen in the input / output device provided in the host device 1.
  • the host device 1 is an information processing device that can be connected to the network as an HMI (Human Machine Interface) for the operator to monitor the entire system in an integrated manner, and outputs necessary commands to the controller 2 via the network.
  • the controller 2 receives a notification of the status of the control target from the controller 2 and displays the contents thereof.
  • the host device 1 outputs an output readback diagnosis prohibition command (first command: hereinafter referred to as a prohibition command) to all output points 8 of a specific output device 7 by an operator's operation.
  • An output processing unit (second command output processing unit) 12 and a state monitoring processing unit 13 for monitoring the state of the output device 7 are provided.
  • the host device 1 outputs the prohibition command and the release command on the display screen of the input / output device of the host device 1 as a user interface of the prohibition command output processing unit 11, the release command output processing unit 12 and the state monitoring processing unit 13.
  • the operation display screen 10B for displaying the output readback diagnosis result or the status during the prohibition command by acquiring the command result notification 203 of the output device 7 from the controller 2 and displaying the operation screen 10A for operating Is displayed.
  • a command button for outputting a prohibition command to each output device 7, A release button for outputting a release command is displayed.
  • the controller 2 is a device that controls each operation end 9 via the input / output interface device 3 and the output device 7, and commands from the host device 1, notification contents from the input device 4 (detection results of the sensor 6, etc.) Control according to the notification content (output readback diagnosis result) from the output device 7 is performed. Such control is similar to a conventional controller.
  • the controller 2 includes a prohibition command processing unit (first command processing unit) 21, a release command processing unit (second command processing unit) 22, and a command result notification unit 23.
  • the prohibition command processing unit 21 receives a prohibition command 101 for an output device 7 from the host device 1, the prohibition command processing unit 21 outputs a prohibition command 201 for the corresponding output device 7 to the input / output interface device 3.
  • the release command processing unit 22 upon receiving a release command 102 for a certain output device 7 from the host device 1, the release command processing unit 22 outputs a release command 202 for the corresponding output device 7 to the input / output interface device 3.
  • the command result notification unit 23 notifies the command result notification 301 from the input / output interface device 3 to the upper device 1 as the command result notification 203.
  • the prohibition command processing unit 21 and the cancellation command processing unit 22 function as a mechanism for transferring the prohibition command 101 and the cancellation command 102 from the host device 1 to the input / output interface device 3 as the prohibition command 201 and the cancellation command 202, respectively.
  • the command result notification unit 23 functions as a mechanism for transferring the command result notification 301 from the input / output interface device 3 to the higher-level device 1 as the command result notification 203.
  • the input / output interface device 3 is an interface device for connecting the controller 2 to the input device 4 and the output device 7.
  • an output readback notification processing unit 31 is included.
  • the output readback notification processing unit 31 is responsive to the diagnostic result indicated by the diagnostic result notification 701 from the output device 7 described below.
  • the output readback diagnosis result is set to “normal” and “prohibited command in progress” is set, and the contents are notified to the controller 2 as a command result notification 301 for the corresponding output device 7.
  • the controller 2 determines that the corresponding output device 7 is normal regardless of the diagnosis result of the output device 7.
  • the output readback notification processing unit 31 cancels the set “prohibited command” and outputs the diagnosis result notification 701 from the output device 7.
  • the diagnosis result is directly notified to the controller 2 as a command result notification 301 of the output device 7.
  • the input device 4 notifies the controller 2 via the input / output interface device 3 of the detection results from the sensors 6 connected to a plurality of input terminals provided in the input device 4.
  • the output device 7 outputs a current corresponding to the control signal for the operation end 9 to be controlled given from the controller 2 through the input / output interface device 3 from the output point 8 corresponding to the operation end 9.
  • the output device 7 also has an output readback diagnosis processing unit 71.
  • the output readback diagnosis processing unit 71 detects an abnormality in the output signal at each output point 8, and notifies the diagnosis result notification 701 of the detection result. Is notified to the input / output interface device 3.
  • the functions of the processing units of the host device 1, the controller 2, the input / output interface device 3, and the output device 7 described above are stored in the ROM in the control unit (not shown) provided in each device. This is realized by developing and executing a control program on a RAM serving as a main storage device. Each device is not limited to the one shown in the figure, and a required number of devices are provided according to the environment to which the device is applied.
  • FIG. 4 is a flowchart for explaining the operation of the host device 1 when a prohibition command and a release command are operated by the operator in the host device 1.
  • the release command output processing unit 12 of the higher-level device 1 outputs the release command 102 for the target output device corresponding to this operation to the controller 2 (FIG. 4: S104). If neither the prohibition command nor the cancellation command is received (No in S101 and S103), the prohibition command output processing unit 11 and the cancellation command output processing unit 12 do nothing.
  • FIG. 5 is a flowchart for explaining the operation of the controller 2 when the controller 2 receives a prohibition command and a cancellation command from the host device 1.
  • the prohibition command processing unit 21 when there is a prohibition command 101 for a certain output device 7 from the host device 1 (FIG. 5: Yes in S201), the prohibition command processing unit 21 sends this prohibition command 201 to the input / output interface device 3. Output (FIG. 5: S202). Further, when there is a release command 102 for each output device from the host device 1 (FIG. 5: No in S201 and Yes in S203), the release command processing unit 22 sends this release command 202 to the input / output interface device 3. Output (FIG. 5: S204). If neither the prohibition command nor the release command is received (FIG. 5: No in S201 and S203), the prohibition command processing unit 21 and the cancellation command processing unit 22 do nothing.
  • FIG. 6 is a flowchart for explaining the operation of the input / output interface device 3 when the input / output interface device 3 receives a prohibition command and a release command from the controller 2.
  • the output readback notification processing unit 31 of the input / output interface device 3 receives the prohibition command 201 for each output device from the controller 2 (FIG. 6: “prohibition command” in S301), the “prohibition command” is set for the target output device 7. “Medium” is set (FIG. 6: S302).
  • the output readback notification processing unit 31 temporarily stores information indicating “inhibiting command” as the state of the target output device 7 in the RAM provided in the input / output interface device 3.
  • the target output device 7 is determined to be “inhibiting command” (FIG. 6: Yes in S303), and the output readback notification processing unit 31 receives the command result notification 301 from the following output device 7 as follows.
  • the output readback diagnostic result is set to “normal” and “inhibited command is in progress”, and the result is sent to the command of the output device 7
  • the controller 2 is notified as a result notification 301 (FIG. 6: S304).
  • the output readback notification processing unit 31 releases the set “prohibited command” (FIG. 6). 6: S305).
  • the output readback notification processing unit 31 resets the information indicating “inhibiting command” temporarily stored in the RAM as the state of the target output device 7.
  • the output readback notification processing unit 31 notifies the diagnosis result notification 701 from the output device 7. Is directly notified to the controller 2 as a command result notification 301 of the output device 7 (FIG. 6: S306).
  • FIG. 7 is a flowchart for explaining the operation of the output readback diagnosis in the output device 7.
  • the output readback diagnosis processing unit 71 of the output device 7 performs output readback diagnosis for all output points 8. In FIG. 7, it is determined whether or not an abnormality has occurred at each output point 8 in the loop processing of S401 (output readback diagnosis start to end for all output points). If an abnormality has occurred (Yes in S402), “Abnormal” is set (S403), otherwise (No in S402), “Normal” is set (S404).
  • the output readback diagnosis processing unit 71 temporarily stores information indicating the state (abnormal / normal) of each output point 8 in a RAM provided in the output device 7.
  • the output readback diagnosis processing unit 71 notifies the input / output interface device 3 of “abnormal” as the diagnosis result. (S406), otherwise, “normal” is notified to the input / output interface device 3 (S407).
  • FIG. 8 is a flowchart for explaining the operation of the controller 2 when the controller 2 receives the command result notification 301 of the output device 7 from the input / output interface device 3.
  • the command result notification unit 23 of the controller 2 receives the command result notification 301 of the output device 7 from the input / output interface device 3 (FIG. 8: Yes in S501), the command result notification 301 is sent to the host device 1 as a command result notification 203. (FIG. 8: S502).
  • FIG. 9 is a flowchart for explaining the operation of the host device 1 when the host device 1 receives the command result notification 203 of the output device 7 from the controller 2.
  • the status monitoring processing unit 13 of the higher level device 1 displays the target on the status display screen 10B of the input / output device provided in the higher level device 1. As the failure information of the output device 7, the output readback diagnosis result or the state of “prohibited command” is displayed if it is “prohibited command” (FIG. 9: S 602).
  • the first embodiment has been described above.
  • the above-mentioned pre-operation and post-operation at the time of exchanging and repairing the operation end 9 are prohibited by the operator who monitors the system on the operation screen 10A of the input / output device provided in the host device 1.
  • This can be realized by a simple operation of operating a release command, and the work time can be greatly reduced including the time for confirmation.
  • the operator can know that the output device 7 is prohibiting the output readback diagnosis by the prohibition command on the status display screen 10B of the input / output device provided in the host device 1. (Release command) leakage can be prevented.
  • FIG. 10 is a diagram illustrating a configuration example of the monitoring control system according to the second embodiment.
  • the monitoring control system of the present embodiment is an engineering that is a tool (software) that edits a sequence program that is operated by the controller 2 such as a PLC with respect to the monitoring control system of the first embodiment.
  • An information processing apparatus 10 having a tool 1010 is added.
  • the information processing apparatus 10 having the engineering tool 1010 is directly connected to the control unit 20 of the controller 2 via a dedicated bus or a dedicated interface (804 in FIG. 10).
  • the information processing apparatus 10 having the engineering tool 1010 and the engineering tool 1010 will be described without distinction. Below, a different part from 1st Embodiment is demonstrated.
  • FIG. 11 is a diagram showing the configuration of each device of the host device 1, the controller 2, the input / output interface device 3, and the output device 7 in this embodiment, and the flow of instructions or notifications between the devices.
  • the engineering tool 1010 outputs a prohibition command output processing unit for outputting an output readback diagnosis prohibition command (prohibition command) to all the output points 8 of the specific output device 7 by an operator's operation.
  • a prohibition command output processing unit for outputting an output readback diagnosis prohibition command (prohibition command) to all the output points 8 of the specific output device 7 by an operator's operation.
  • First command output processing unit 1011, a cancellation command output processing unit (second command output processing unit) 1012 for outputting a cancellation command for a prohibition command by an operator's operation, and the state of the output device 7 are monitored
  • a state monitoring processing unit (second state monitoring processing unit) 1013 for performing the processing.
  • the engineering tool 1010 uses the prohibition command output processing unit 1011, the cancellation command output processing unit 1012, and the state monitoring processing unit 1013 as user interfaces on the display screen of the input / output device provided in the engineering tool 1010.
  • An operation screen 10C for operating the output is displayed, a command result notification 203 of the output device 7 from the controller 2 is acquired, and a status display screen 10D for displaying the output readback diagnosis result and the status during the prohibit command is displayed. indicate.
  • a command button for outputting a prohibition command and a release command are output to the output device 7.
  • the release button for is displayed.
  • the prohibition command output processing unit 1011, the cancellation command output processing unit 1012, and the state monitoring processing unit 1013 are the same as the prohibition command output processing unit 11 and the cancellation command output processing that the host device 1 includes in the first embodiment.
  • the same functions as the unit 12 and the state monitoring processing unit 13 are provided.
  • the host device 1 does not have the prohibition command output processing unit 11 and the release command output processing unit 12 provided in the first embodiment, and has a state monitoring processing unit (first state monitoring processing unit) 13. It has become.
  • FIG. 13 shows an example of a status display screen 10E in the input / output device provided in the host device 1.
  • the function of the state monitoring processing unit 13 and the configuration / function of the other parts of the host device 1 are the same as those described in the first embodiment.
  • the controller 2 includes a prohibition command processing unit (first command processing unit) 21 and a cancellation command processing unit (second command processing unit) 22, which are prohibited commands and cancellations from the engineering tool 1010 directly connected to the controller 2, respectively.
  • the command result notification unit 23 Upon receiving the command, the command result notification unit 23 notifies the command result notification 203 to both the engineering tool 1010 and the host device 1.
  • Other configurations and functions of the controller 2 are the same as those described in the first embodiment.
  • the output device 7 and the operation end 9 are the same as those in the first embodiment.
  • the output processing unit 1011 outputs to the controller 2 a prohibition command 101 for each target output device corresponding to this operation.
  • the engineering tool 1010 outputs a release command.
  • the unit 1012 outputs to the controller 2 a release command 102 for the target output device corresponding to this operation.
  • the corresponding prohibition command processing unit 21 or the cancellation command processing unit 22 inputs / outputs the received command as a prohibition command 201 or a cancellation command 202. Transfer to interface device 3.
  • the command result notification unit 23 of the controller 2 not only notifies the host device 1 of the command result notification 301 from the input / output interface device 3 as the command result notification 203 but also notifies the engineering tool 1010.
  • the status monitoring processing unit 1013 displays the failure of the target output device 7 on the status display screen 10D of the input / output device illustrated in FIG. As information, if the output readback diagnosis result or “prohibited command is in progress”, the status of “prohibited command is in progress” is displayed.
  • the host device 1 when there is a command result notification 203 of the output device 7 from the controller 2, the host device 1 also displays on the status display screen 10B of the input / output device provided in the host device 1 illustrated in FIG. As the failure information of the target output device 7, if the output readback diagnosis result or "prohibited command is in progress", the status of "prohibited command is in progress" is displayed.
  • an operator who operates the engineering tool 1010 connected to the controller 2 is not an operator who monitors the system with the host device 1, but the operation screen 10C of the engineering tool 1010.
  • the prohibition command / release command in the above, it is possible to perform pre-work and post-work in the field at the time of replacement and repair work of multiple operation terminals 9 with simple operations, including work for confirmation Time can be significantly reduced.
  • the host device indicates that the output device 7 is in the prohibition command or is not in the prohibition command (during normal readback diagnosis) due to the prohibit command.
  • the final confirmation can be easily performed at the completion of the operation of the entire process even in the operation of a plurality of remote locations.
  • the present embodiment even when there is a case in which a plurality of operation ends 9 are separated at the time of inspection or repair work, it is possible to simplify the operation and confirmation of the pretreatment and the post treatment.
  • the controller 2 that controls the operation end 9 via the output device 7 that performs output readback diagnosis.
  • the supervisory control system including the host device 1 before and after the separation between the output point 8 and the operation end 9 of the output device 7 in order to repair the operation end 9 during operation of the system. It is possible to simplify the treatment and confirmation work.

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Abstract

This input/output control device is connected between an output device that performs an output readback diagnosis and a controller that controls an operation end via the output device. The input/output control device is provided with a notification process unit that, when receiving a first command from the controller side, gives the controller, as a command result notification in response to the command, a command result notification in which the result of an output readback diagnosis performed by the output device is considered to be normal, and that, when receiving a second command from the controller side, gives the controller, as a command result notification in response to the command, a result of the output readback diagnosis performed by the output device.

Description

入出力制御装置、入出力制御方法、および監視制御システムI / O control device, I / O control method, and supervisory control system
　本発明の実施形態は、入出力制御装置、入出力制御方法、および監視制御システムに関する。 Embodiments described herein relate generally to an input / output control device, an input / output control method, and a monitoring control system.
　従来より、各種設備、プラントの監視制御を行うためのＰＬＣ（programmable　logic　controller）等のコントローラとこのコントローラにネットワークで接続された上位機器とで構成される監視制御システムがある（例えば、特許文献１）。コントローラは、複数の入力装置や出力装置に接続され、出力装置のそれぞれの出力点に接続されたバルブ等の操作端を制御する。また、出力装置は、システム稼動時には、自身の出力をリードバックすることにより、当該出力装置から正しく出力がなされているか否かの診断を行う（以下、このような診断を出力リードバック診断と称す）。 2. Description of the Related Art Conventionally, there is a monitoring control system including a controller such as a PLC (programmable logic controller) for performing monitoring control of various facilities and plants and a host device connected to the controller via a network (for example, Patent Document 1). ). The controller is connected to a plurality of input devices and output devices, and controls operation ends such as valves connected to output points of the output devices. In addition, when the system is in operation, the output device reads back its own output, thereby diagnosing whether or not the output from the output device is correct (hereinafter, such diagnosis is referred to as output readback diagnosis). ).
　一方、上記のようなシステムの稼働中において、操作端の故障による交換や補修作業を行うために、正常に出力制御している出力装置の出力点と操作端との間を離切するケースが生じることがある。このようなとき単純に出力装置の出力点と操作端との間を離切すると、出力装置自体は正常でも、出力リードバック診断結果からコントローラは出力装置の異常を検出することになり、当該出力装置を介したコントローラの出力部の制御が停止してしまう。 On the other hand, during the operation of the system as described above, there is a case where the output point of the output device that is normally performing output control is disconnected from the operation end in order to perform replacement or repair work due to failure of the operation end. May occur. In such a case, if the output point of the output device is simply disconnected from the operation end, the controller detects an abnormality of the output device from the output readback diagnosis result even if the output device itself is normal. Control of the output unit of the controller via the device stops.
特開２０１４－１０４７９号公報JP 2014-10479 A
　そのため、従来技術においては、操作端の故障による交換や補修作業を行う際、出力リードバック診断で異常検出しないように、出力装置の出力点と操作端との間を離切する前に、出力装置の出力点を短絡させたり、コントローラの出力部の出力値を０にしたりする必要があった。また、操作端の交換や補修作業後は、元の状態に戻す作業と確認が必要であった。このように、上記システムにおいて、操作端の故障による交換や補修作業を行う場合、多大な時間と手間を要した。またそのため、誤操作が生じる恐れもあった。 Therefore, in the prior art, when performing replacement or repair work due to failure of the operation end, output is performed before disconnecting between the output point of the output device and the operation end so that no abnormality is detected by output readback diagnosis. It was necessary to short-circuit the output point of the device or to set the output value of the output part of the controller to 0. In addition, after replacement of the operation end and repair work, it was necessary to return to the original state and confirm. As described above, in the above system, it takes a lot of time and labor to perform replacement or repair work due to a failure of the operation end. For this reason, there is a risk of erroneous operation.
　本発明が解決しようとする課題は、上記のような監視制御システムの稼働中に操作端の補修等を行うために出力装置の出力点と操作端との間を離切する際の、事前および事後の処置や確認作業を簡易化することができる入出力制御装置、入出力制御方法、および監視制御システムを提供することである。 The problem to be solved by the present invention is that prior to the separation between the output point of the output device and the operation end in order to repair the operation end during the operation of the monitoring control system as described above, To provide an input / output control device, an input / output control method, and a monitoring control system capable of simplifying subsequent measures and confirmation work.
　実施形態の入出力制御装置は、出力リードバック診断を行う出力装置を介して操作端の制御を行うコントローラと、出力装置との間に接続される入出力制御装置である。この入出力制御装置は、コントローラ側から第１の指令を受けた場合、該指令に対する指令結果通知として、出力装置の出力リードバック診断結果を正常とした指令結果通知を、コントローラに通知し、コントローラ側から第２の指令を受けた場合、該指令に対する指令結果通知として、出力装置の出力リードバック診断結果をコントローラに通知する通知処理部を有する。 The input / output control device according to the embodiment is an input / output control device connected between an output device and a controller that controls an operation end via an output device that performs output readback diagnosis. When the first command is received from the controller side, the input / output control device notifies the controller of a command result notification indicating that the output readback diagnosis result of the output device is normal as a command result notification for the command. When a second command is received from the side, a notification processing unit for notifying the controller of the output readback diagnosis result of the output device is provided as a command result notification for the command.
図１は、第１の実施形態にかかる監視制御システムの構成例を示す模式図である。FIG. 1 is a schematic diagram illustrating a configuration example of a monitoring control system according to the first embodiment. 図２は、第１の実施形態における上位機器、コントローラ、入出力インタフェース装置、および出力装置の各装置の構成と、各装置間の指令または通知の流れを示す図である。FIG. 2 is a diagram illustrating the configuration of each of the host device, the controller, the input / output interface device, and the output device in the first embodiment, and the flow of commands or notifications between the devices. 図３は、第１の実施形態における上位機器に備わる入出力装置における操作画面および状態表示画面の例を示す図である。FIG. 3 is a diagram illustrating an example of an operation screen and a status display screen in the input / output device provided in the host device according to the first embodiment. 図４は、第１の実施形態における上位機器においてオペレータにより禁止指令および解除指令の操作が行われる際の上位機器の動作を説明するフローチャートである。FIG. 4 is a flowchart for explaining the operation of the host device when the operator operates the prohibition command and the release command in the host device in the first embodiment. 図５は、第１の実施形態において、コントローラが上位機器から禁止指令および解除指令を受けた際のコントローラの動作を説明するフローチャートである。FIG. 5 is a flowchart for explaining the operation of the controller when the controller receives a prohibit command and a cancel command from the host device in the first embodiment. 図６は、第１の実施形態において、入出力インタフェース装置がコントローラから禁止指令および解除指令を受けた際の入出力インタフェース装置の動作を説明するフローチャートである。FIG. 6 is a flowchart for explaining the operation of the input / output interface device when the input / output interface device receives a prohibition command and a release command from the controller in the first embodiment. 図７は、第１の実施形態において、出力装置における出力リードバック診断の動作を説明するフローチャートである。FIG. 7 is a flowchart for explaining the operation of the output readback diagnosis in the output device in the first embodiment. 図８は、第１の実施形態において、コントローラが、入出力インタフェース装置から出力装置の指令結果通知を受けた際のコントローラの動作を説明するフローチャートである。FIG. 8 is a flowchart for explaining the operation of the controller when the controller receives a command result notification of the output device from the input / output interface device in the first embodiment. 図９は、第１の実施形態において、上位機器が、コントローラから出力装置の指令結果通知を受けた際の上位機器の動作を説明するフローチャートである。FIG. 9 is a flowchart for explaining the operation of the host device when the host device receives a command result notification of the output device from the controller in the first embodiment. 図１０は、第２の実施形態にかかる監視制御システムの構成例を示す図である。FIG. 10 is a diagram illustrating a configuration example of a monitoring control system according to the second embodiment. 図１１は、第２の実施形態における上位機器、コントローラ、入出力インタフェース装置、および出力装置の各装置の構成と、各装置間の指令または通知の流れを示す図である。FIG. 11 is a diagram illustrating the configuration of each of the host device, the controller, the input / output interface device, and the output device in the second embodiment, and the flow of commands or notifications between the devices. 図１２は、第２の実施形態におけるエンジニアリングツールにおける操作画面および状態表示画面の例を示す図である。FIG. 12 is a diagram illustrating an example of an operation screen and a status display screen in the engineering tool according to the second embodiment. 図１３は、第２の実施形態における上位機器に備わる入出力装置における状態表示画面の例を示す図である。FIG. 13 is a diagram illustrating an example of a status display screen in the input / output device provided in the host device according to the second embodiment.
　以下、入出力制御装置、入出力制御方法、および監視制御システムの諸実施形態について、図面を参照して説明する。なお、同一の構成要素には、同一符号を付し、重複説明を省略する。 Hereinafter, embodiments of an input / output control device, an input / output control method, and a monitoring control system will be described with reference to the drawings. In addition, the same code | symbol is attached | subjected to the same component and duplication description is abbreviate | omitted.
（第１の実施形態）
　はじめに、第１の実施形態にかかる監視制御システムの構成について説明する。図１は、第１の実施形態にかかる監視制御システムの構成例を示す模式図である。 (First embodiment)
First, the configuration of the monitoring control system according to the first embodiment will be described. FIG. 1 is a schematic diagram illustrating a configuration example of a monitoring control system according to the first embodiment.
　本実施形態の監視制御システムは、コントローラ２がその伝送Ｉ／Ｆ部２４を通じて接続されるネットワーク８０１を介して上位機器１と接続されている。コントローラ２は、その制御部２０が入出力インタフェース装置（入出力制御装置）３と専用バス８０２で接続されており、入出力インタフェース装置３は、入力装置４および出力装置７とＩ／Ｏバス８０３を介して接続されている。入力装置４に備わる複数の入力点５は、それぞれ対応するセンサ６等に接続されており、出力装置７に備わる複数の出力点８は、それぞれ対応するバルブ等の操作端９に接続されている。 In the monitoring control system of the present embodiment, the controller 2 is connected to the host device 1 via the network 801 to which the controller 2 is connected through the transmission I / F unit 24. The controller 2 has a control unit 20 connected to an input / output interface device (input / output control device) 3 via a dedicated bus 802, and the input / output interface device 3 includes an input device 4 and an output device 7 and an I / O bus 803. Connected through. A plurality of input points 5 provided in the input device 4 are respectively connected to corresponding sensors 6 and the like, and a plurality of output points 8 provided in the output device 7 are respectively connected to operation ends 9 such as corresponding valves. .
　次に、上位機器１、コントローラ２、入出力インタフェース装置３、および出力装置７の構成について説明する。図２は、上位機器１、コントローラ２、入出力インタフェース装置３、および出力装置７の各装置の構成と、各装置間の指令または通知の流れを示す図である。また、図３は、上位機器１に備わる入出力装置における操作画面および状態表示画面の例を示す図である。 Next, the configuration of the host device 1, the controller 2, the input / output interface device 3, and the output device 7 will be described. FIG. 2 is a diagram illustrating the configuration of each of the host device 1, the controller 2, the input / output interface device 3, and the output device 7, and the flow of commands or notifications between the devices. FIG. 3 is a diagram illustrating an example of an operation screen and a status display screen in the input / output device provided in the host device 1.
　上位機器１は、オペレータがシステム全体を統括的に監視するためのＨＭＩ（Human　Machine　Interface）としての、ネットワーク接続可能な情報処理装置であり、ネットワークを介してコントローラ２に対し必要な指令を出力し、またコントローラ２から制御対象の状態等の通知を受け、その内容等を表示する。本実施形態における上位機器１は、特定の出力装置７の出力点８全点に対して、オペレータの操作により出力リードバック診断禁止の指令（第１の指令：以下、禁止指令と称す）を出力するための禁止指令出力処理部（第１の指令出力処理部）１１と、オペレータの操作により禁止指令に対する解除の指令（第２の指令：以下、解除指令と称す）を出力するための解除指令出力処理部（第２の指令出力処理部）１２と、出力装置７の状態を監視するための状態監視処理部１３を有する。 The host device 1 is an information processing device that can be connected to the network as an HMI (Human Machine Interface) for the operator to monitor the entire system in an integrated manner, and outputs necessary commands to the controller 2 via the network. In addition, the controller 2 receives a notification of the status of the control target from the controller 2 and displays the contents thereof. In the present embodiment, the host device 1 outputs an output readback diagnosis prohibition command (first command: hereinafter referred to as a prohibition command) to all output points 8 of a specific output device 7 by an operator's operation. A prohibition command output processing unit (first command output processing unit) 11 for performing a cancel command for outputting a cancel command for the prohibition command (second command: hereinafter referred to as a cancel command) by an operator's operation An output processing unit (second command output processing unit) 12 and a state monitoring processing unit 13 for monitoring the state of the output device 7 are provided.
　また上位機器１は、禁止指令出力処理部１１、解除指令出力処理部１２および状態監視処理部１３のユーザインタフェースとして、上位機器１に備わる入出力装置の表示画面に、禁止指令および解除指令の出力を操作するための操作画面１０Ａを表示するとともに、コントローラ２からの出力装置７の指令結果通知２０３を取得して、出力リードバック診断結果または禁止指令中の状態を表示するための状態表示画面１０Ｂを表示する。図３に示す操作画面１０Ａの例では、入力装置４および出力装置７を特定するための入出力装置番号毎に、ここでは各出力装置７に対し、禁止指令を出力するための指令ボタンと、解除指令を出力するための解除ボタンが表示されている。また、図３に示す状態表示画面１０Ｂの例では、出力装置番号毎に、故障情報として「正常」または「異常」または「禁止指令中」のいずれかが表示される。なお、操作画面１０Ａおよび状態表示画面１０Ｂの表示態様は、上記機能と同等の機能を有するものであれば任意である。また、禁止指令出力処理部１１、解除指令出力処理部１２および状態監視処理部１３は、上位機器１にコントローラ２用のエンジニアリングツールを実装し、このエンジニアリングツール上で実現するようにしてもよい。 The host device 1 outputs the prohibition command and the release command on the display screen of the input / output device of the host device 1 as a user interface of the prohibition command output processing unit 11, the release command output processing unit 12 and the state monitoring processing unit 13. The operation display screen 10B for displaying the output readback diagnosis result or the status during the prohibition command by acquiring the command result notification 203 of the output device 7 from the controller 2 and displaying the operation screen 10A for operating Is displayed. In the example of the operation screen 10A shown in FIG. 3, for each input / output device number for specifying the input device 4 and the output device 7, here, a command button for outputting a prohibition command to each output device 7, A release button for outputting a release command is displayed. Further, in the example of the status display screen 10B shown in FIG. 3, “normal”, “abnormal”, or “prohibited command” is displayed as failure information for each output device number. The display form of the operation screen 10A and the status display screen 10B is arbitrary as long as it has a function equivalent to the above function. Further, the prohibition command output processing unit 11, the cancellation command output processing unit 12, and the state monitoring processing unit 13 may be implemented on the engineering tool by mounting the engineering tool for the controller 2 on the host device 1.
　コントローラ２は、入出力インタフェース装置３および出力装置７を介して各操作端９を制御する装置であり、上位機器１からの指令や入力装置４からの通知内容（センサ６の検出結果など）や出力装置７からの通知内容（出力リードバック診断結果）等に応じた制御を行う。こうした制御は、従来のコントローラと同様である。本実施形態では、このコントローラ２に、禁止指令処理部（第１指令処理部）２１と解除指令処理部（第２指令処理部）２２と指令結果通知部２３を設けている。禁止指令処理部２１は、上位機器１からある出力装置７に対する禁止指令１０１を受けると、該当する出力装置７に対する禁止指令２０１を入出力インタフェース装置３に対して出力する。また、解除指令処理部２２は、上位機器１よりある出力装置７に対する解除指令１０２を受けると、該当する出力装置７に対する解除指令２０２を入出力インタフェース装置３に対して出力する。また、指令結果通知部２３は、入出力インタフェース装置３からの指令結果通知３０１を上位機器１に指令結果通知２０３として通知する。このように、禁止指令処理部２１および解除指令処理部２２はそれぞれ、上位機器１からの禁止指令１０１および解除指令１０２を禁止指令２０１および解除指令２０２として入出力インタフェース装置３へ転送する機構として機能し、指令結果通知部２３は、入出力インタフェース装置３からの指令結果通知３０１を指令結果通知２０３として上位機器１へ転送する機構として機能する。 The controller 2 is a device that controls each operation end 9 via the input / output interface device 3 and the output device 7, and commands from the host device 1, notification contents from the input device 4 (detection results of the sensor 6, etc.) Control according to the notification content (output readback diagnosis result) from the output device 7 is performed. Such control is similar to a conventional controller. In the present embodiment, the controller 2 includes a prohibition command processing unit (first command processing unit) 21, a release command processing unit (second command processing unit) 22, and a command result notification unit 23. When the prohibition command processing unit 21 receives a prohibition command 101 for an output device 7 from the host device 1, the prohibition command processing unit 21 outputs a prohibition command 201 for the corresponding output device 7 to the input / output interface device 3. Further, upon receiving a release command 102 for a certain output device 7 from the host device 1, the release command processing unit 22 outputs a release command 202 for the corresponding output device 7 to the input / output interface device 3. In addition, the command result notification unit 23 notifies the command result notification 301 from the input / output interface device 3 to the upper device 1 as the command result notification 203. As described above, the prohibition command processing unit 21 and the cancellation command processing unit 22 function as a mechanism for transferring the prohibition command 101 and the cancellation command 102 from the host device 1 to the input / output interface device 3 as the prohibition command 201 and the cancellation command 202, respectively. The command result notification unit 23 functions as a mechanism for transferring the command result notification 301 from the input / output interface device 3 to the higher-level device 1 as the command result notification 203.
　入出力インタフェース装置３は、コントローラ２と、入力装置４および出力装置７とを接続するためのインタフェース装置である。本実施形態では、出力リードバック通知処理部３１を有する。この出力リードバック通知処理部３１は、入出力インタフェース装置３がコントローラ２から禁止指令２０１を受けると、下記の出力装置７からの診断結果通知７０１で示される診断結果に対して、その内容にかかわらず出力リードバック診断結果を「正常」にセットするとともに「禁止指令中」をセットして、その内容を該当の出力装置７に対する指令結果通知３０１としてコントローラ２に通知する。これにより、コントローラ２では、出力装置７での診断結果にかかわらず、該当の出力装置７が正常であると判定される。一方、出力リードバック通知処理部３１は、入出力インタフェース装置３がコントローラ２から解除指令２０２を受けると、セットされている「禁止指令中」を解除し、出力装置７からの診断結果通知７０１の診断結果をそのまま出力装置７の指令結果通知３０１としてコントローラ２に通知する。 The input / output interface device 3 is an interface device for connecting the controller 2 to the input device 4 and the output device 7. In this embodiment, an output readback notification processing unit 31 is included. When the input / output interface device 3 receives the prohibit command 201 from the controller 2, the output readback notification processing unit 31 is responsive to the diagnostic result indicated by the diagnostic result notification 701 from the output device 7 described below. First, the output readback diagnosis result is set to “normal” and “prohibited command in progress” is set, and the contents are notified to the controller 2 as a command result notification 301 for the corresponding output device 7. As a result, the controller 2 determines that the corresponding output device 7 is normal regardless of the diagnosis result of the output device 7. On the other hand, when the input / output interface device 3 receives the cancel command 202 from the controller 2, the output readback notification processing unit 31 cancels the set “prohibited command” and outputs the diagnosis result notification 701 from the output device 7. The diagnosis result is directly notified to the controller 2 as a command result notification 301 of the output device 7.
　入力装置４は、この入力装置４に備わる複数の入力端に接続されるセンサ６等からの検出結果を、入出力インタフェース装置３を介してコントローラ２に通知する。 The input device 4 notifies the controller 2 via the input / output interface device 3 of the detection results from the sensors 6 connected to a plurality of input terminals provided in the input device 4.
　出力装置７は、入出力インタフェース装置３を介してコントローラ２から与えられる制御対象の操作端９に対する制御信号に応じた電流を、該当の操作端９に対応する出力点８から出力する。また、出力装置７は、出力リードバック診断処理部７１を有し、この出力リードバック診断処理部７１にて、各出力点８での出力信号の異常を検出し、検出結果を診断結果通知７０１として、入出力インタフェース装置３に通知する。 The output device 7 outputs a current corresponding to the control signal for the operation end 9 to be controlled given from the controller 2 through the input / output interface device 3 from the output point 8 corresponding to the operation end 9. The output device 7 also has an output readback diagnosis processing unit 71. The output readback diagnosis processing unit 71 detects an abnormality in the output signal at each output point 8, and notifies the diagnosis result notification 701 of the detection result. Is notified to the input / output interface device 3.
　なお、上述した上位機器１、コントローラ２、入出力インタフェース装置３、および出力装置７の各処理部の機能は、各装置に備わる制御部（図示せず）において、ＣＰＵが、ＲＯＭに記憶された制御プログラムを主記憶装置となるＲＡＭ上に展開し実行することにより実現される。また、各装置は、図に示すものに限らず、適用される環境に応じて必要数の装置が設けられる。 The functions of the processing units of the host device 1, the controller 2, the input / output interface device 3, and the output device 7 described above are stored in the ROM in the control unit (not shown) provided in each device. This is realized by developing and executing a control program on a RAM serving as a main storage device. Each device is not limited to the one shown in the figure, and a required number of devices are provided according to the environment to which the device is applied.
　次に、本実施形態における、上位機器１、コントローラ２、入出力インタフェース装置３、および出力装置７のそれぞれの機能による動作について説明する。 Next, operations according to the functions of the host device 1, the controller 2, the input / output interface device 3, and the output device 7 in this embodiment will be described.
　図４は、上位機器１においてオペレータにより禁止指令および解除指令の操作が行われる際の上位機器１の動作を説明するフローチャートである。 FIG. 4 is a flowchart for explaining the operation of the host device 1 when a prohibition command and a release command are operated by the operator in the host device 1.
　オペレータが上位機器１から、ある出力装置７に対する禁止指令を出力するよう操作すると、前述した図３の例では、禁止指令の指令ボタンを押下する操作をすると（図４：Ｓ１０１でＹｅｓ）、上位機器１の禁止指令出力処理部１１が、コントローラ２に対して、この操作に対応する対象の出力装置単位の禁止指令１０１を出力する（図４：Ｓ１０２）。また、オペレータが上位機器１から、ある出力装置７に対する解除指令を出力するよう操作すると、図３の例では、解除指令の指令ボタンを押下する操作をすると（図４：Ｓ１０１でＮｏかつＳ１０３でＹｅｓ）、上位機器１の解除指令出力処理部１２が、コントローラ２に対して、この操作に対応する対象の出力装置単位の解除指令１０２を出力する（図４：Ｓ１０４）。禁止指令でも解除指令でもない場合（図４：Ｓ１０１およびＳ１０３でＮｏ）、禁止指令出力処理部１１および解除指令出力処理部１２は何もしない。 When the operator operates the host device 1 to output a prohibit command to a certain output device 7, in the example of FIG. 3 described above, when the user presses the prohibit command command button (FIG. 4: Yes in S101), the host device The prohibition command output processing unit 11 of the device 1 outputs a prohibition command 101 for each target output device corresponding to this operation to the controller 2 (FIG. 4: S102). Further, when the operator operates to output a release command for a certain output device 7 from the host device 1, in the example of FIG. 3, when the operator presses the release command button (FIG. 4: No in S101 and No in S103). Yes), the release command output processing unit 12 of the higher-level device 1 outputs the release command 102 for the target output device corresponding to this operation to the controller 2 (FIG. 4: S104). If neither the prohibition command nor the cancellation command is received (No in S101 and S103), the prohibition command output processing unit 11 and the cancellation command output processing unit 12 do nothing.
　図５は、コントローラ２が上位機器１から禁止指令および解除指令を受けた際のコントローラ２の動作を説明するフローチャートである。 FIG. 5 is a flowchart for explaining the operation of the controller 2 when the controller 2 receives a prohibition command and a cancellation command from the host device 1.
　コントローラ２では、上位機器１からの、ある出力装置７に対する禁止指令１０１があると（図５：Ｓ２０１でＹｅｓ）、禁止指令処理部２１が、この禁止指令２０１を入出力インタフェース装置３に対して出力する（図５：Ｓ２０２）。また上位機器１からのある出力装置単位の解除指令１０２があると（図５：Ｓ２０１でＮｏかつＳ２０３でＹｅｓ）、解除指令処理部２２が、この解除指令２０２を入出力インタフェース装置３に対して出力する（図５：Ｓ２０４）。禁止指令でも解除指令でもない場合（図５：Ｓ２０１およびＳ２０３でＮｏ）、禁止指令処理部２１および解除指令処理部２２は何もしない。 In the controller 2, when there is a prohibition command 101 for a certain output device 7 from the host device 1 (FIG. 5: Yes in S201), the prohibition command processing unit 21 sends this prohibition command 201 to the input / output interface device 3. Output (FIG. 5: S202). Further, when there is a release command 102 for each output device from the host device 1 (FIG. 5: No in S201 and Yes in S203), the release command processing unit 22 sends this release command 202 to the input / output interface device 3. Output (FIG. 5: S204). If neither the prohibition command nor the release command is received (FIG. 5: No in S201 and S203), the prohibition command processing unit 21 and the cancellation command processing unit 22 do nothing.
　図６は、入出力インタフェース装置３がコントローラ２から禁止指令および解除指令を受けた際の入出力インタフェース装置３の動作を説明するフローチャートである。 FIG. 6 is a flowchart for explaining the operation of the input / output interface device 3 when the input / output interface device 3 receives a prohibition command and a release command from the controller 2.
　入出力インタフェース装置３の出力リードバック通知処理部３１は、コントローラ２からの出力装置単位の禁止指令２０１があると（図６：Ｓ３０１で「禁止指令」）、対象の出力装置７について「禁止指令中」をセットする（図６：Ｓ３０２）。ここでは出力リードバック通知処理部３１は、対象の出力装置７の状態として「禁止指令中」を示す情報を入出力インタフェース装置３に備わるＲＡＭに一時記憶するようにする。その結果、対象の出力装置７は「禁止指令中」と判断されることになり（図６：Ｓ３０３でＹｅｓ）、出力リードバック通知処理部３１は、指令結果通知３０１として下記の出力装置７からの診断結果通知７０１で示される診断結果に対してその内容にかかわらず出力リードバック診断結果を「正常」にセットするとともに、「禁止指令中」をセットし、その結果を当該出力装置７の指令結果通知３０１としてコントローラ２に通知する（図６：Ｓ３０４）。また、出力リードバック通知処理部３１は、コントローラ２から出力装置単位の解除指令２０２があると（図６：Ｓ３０１で「解除指令」）、セットされている「禁止指令中」を解除する（図６：Ｓ３０５）。ここでは出力リードバック通知処理部３１が、対象の出力装置７の状態としてＲＡＭに一時記憶している「禁止指令中」を示す情報をリセットする。その結果、対象の出力装置７は「禁止指令中」ではないと判断されることになり（図６：Ｓ３０３でＮｏ）、出力リードバック通知処理部３１は、出力装置７からの診断結果通知７０１の診断結果をそのまま当該出力装置７の指令結果通知３０１としてコントローラ２に通知する（図６：Ｓ３０６）。 When the output readback notification processing unit 31 of the input / output interface device 3 receives the prohibition command 201 for each output device from the controller 2 (FIG. 6: “prohibition command” in S301), the “prohibition command” is set for the target output device 7. “Medium” is set (FIG. 6: S302). Here, the output readback notification processing unit 31 temporarily stores information indicating “inhibiting command” as the state of the target output device 7 in the RAM provided in the input / output interface device 3. As a result, the target output device 7 is determined to be “inhibiting command” (FIG. 6: Yes in S303), and the output readback notification processing unit 31 receives the command result notification 301 from the following output device 7 as follows. Regardless of the content of the diagnostic result indicated by the diagnostic result notification 701, the output readback diagnostic result is set to “normal” and “inhibited command is in progress”, and the result is sent to the command of the output device 7 The controller 2 is notified as a result notification 301 (FIG. 6: S304). Further, when there is a release command 202 for each output device from the controller 2 (FIG. 6: “release command” in S301), the output readback notification processing unit 31 releases the set “prohibited command” (FIG. 6). 6: S305). Here, the output readback notification processing unit 31 resets the information indicating “inhibiting command” temporarily stored in the RAM as the state of the target output device 7. As a result, it is determined that the target output device 7 is not “prohibited command” (FIG. 6: No in S303), and the output readback notification processing unit 31 notifies the diagnosis result notification 701 from the output device 7. Is directly notified to the controller 2 as a command result notification 301 of the output device 7 (FIG. 6: S306).
　図７は、出力装置７における出力リードバック診断の動作を説明するフローチャートである。 FIG. 7 is a flowchart for explaining the operation of the output readback diagnosis in the output device 7.
　出力装置７の出力リードバック診断処理部７１は、全出力点８について出力リードバック診断を行う。図７では、Ｓ４０１のループ処理（全出力点について出力リードバック診断ｓｔａｒｔ～ｅｎｄ）にて、各出力点８について異常が発生しているか判断し、異常発生している場合（Ｓ４０２でＹｅｓ）、「異常」をセットし（Ｓ４０３）、そうでなければ（Ｓ４０２でＮｏ）、「正常」をセットする（Ｓ４０４）。ここでは、出力リードバック診断処理部７１は、各出力点８の状態（異常／正常）を示す情報を出力装置７に備わるＲＡＭに一時記憶するようにする。全出力点８についての診断後、いずれかの出力点８で異常があれば（Ｓ４０５でＹｅｓ）、出力リードバック診断処理部７１は、診断結果として「異常」を入出力インタフェース装置３に通知し（Ｓ４０６）、そうでなければ「正常」を入出力インタフェース装置３に通知する（Ｓ４０７）。 The output readback diagnosis processing unit 71 of the output device 7 performs output readback diagnosis for all output points 8. In FIG. 7, it is determined whether or not an abnormality has occurred at each output point 8 in the loop processing of S401 (output readback diagnosis start to end for all output points). If an abnormality has occurred (Yes in S402), “Abnormal” is set (S403), otherwise (No in S402), “Normal” is set (S404). Here, the output readback diagnosis processing unit 71 temporarily stores information indicating the state (abnormal / normal) of each output point 8 in a RAM provided in the output device 7. If there is an abnormality at any of the output points 8 after diagnosis for all the output points 8 (Yes in S405), the output readback diagnosis processing unit 71 notifies the input / output interface device 3 of “abnormal” as the diagnosis result. (S406), otherwise, “normal” is notified to the input / output interface device 3 (S407).
　図８は、コントローラ２が、入出力インタフェース装置３から出力装置７の指令結果通知３０１を受けた際のコントローラ２の動作を説明するフローチャートである。 FIG. 8 is a flowchart for explaining the operation of the controller 2 when the controller 2 receives the command result notification 301 of the output device 7 from the input / output interface device 3.
　コントローラ２の指令結果通知部２３は、入出力インタフェース装置３から出力装置７の指令結果通知３０１があると（図８：Ｓ５０１でＹｅｓ）、その指令結果通知３０１を上位機器１へ指令結果通知２０３として通知する（図８：Ｓ５０２）。 When the command result notification unit 23 of the controller 2 receives the command result notification 301 of the output device 7 from the input / output interface device 3 (FIG. 8: Yes in S501), the command result notification 301 is sent to the host device 1 as a command result notification 203. (FIG. 8: S502).
　図９は、上位機器１が、コントローラ２から出力装置７の指令結果通知２０３を受けた際の上位機器１の動作を説明するフローチャートである。 FIG. 9 is a flowchart for explaining the operation of the host device 1 when the host device 1 receives the command result notification 203 of the output device 7 from the controller 2.
　上位機器１の状態監視処理部１３は、コントローラ２から出力装置７の指令結果通知２０３があると（図９：Ｓ６０１でＹｅｓ）、上位機器１に備わる入出力装置の状態表示画面１０Ｂに、対象の出力装置７の故障情報として、出力リードバック診断結果を、または「禁止指令中」であれば「禁止指令中」の状態を、表示する（図９：Ｓ６０２）。 When there is a command result notification 203 of the output device 7 from the controller 2 (FIG. 9: Yes in S601), the status monitoring processing unit 13 of the higher level device 1 displays the target on the status display screen 10B of the input / output device provided in the higher level device 1. As the failure information of the output device 7, the output readback diagnosis result or the state of “prohibited command” is displayed if it is “prohibited command” (FIG. 9: S 602).
　以上、第１の実施形態について説明した。本実施形態によれば、前述した操作端９の交換や補修作業の際の事前作業と事後作業が、システムを監視するオペレータがこの上位機器１に備わる入出力装置の操作画面１０Ａで禁止指令／解除指令の操作をするという簡易的な操作で実現でき、確認の手間も含めて作業時間を大幅に短縮できる。また禁止指令中の間は、上位機器１に備わる入出力装置の状態表示画面１０Ｂで、禁止指令により出力装置７が出力リードバック診断を禁止指令中であることをオペレータは知ることができるので、事後処置（解除指令）の漏れ防止ができる。 The first embodiment has been described above. According to the present embodiment, the above-mentioned pre-operation and post-operation at the time of exchanging and repairing the operation end 9 are prohibited by the operator who monitors the system on the operation screen 10A of the input / output device provided in the host device 1. This can be realized by a simple operation of operating a release command, and the work time can be greatly reduced including the time for confirmation. Further, during the prohibition command, the operator can know that the output device 7 is prohibiting the output readback diagnosis by the prohibition command on the status display screen 10B of the input / output device provided in the host device 1. (Release command) leakage can be prevented.
（第２の実施形態）
　次に、第２の実施形態にかかる監視制御システムについて説明する。 (Second Embodiment)
Next, a monitoring control system according to the second embodiment will be described.
　図１０は、第２の実施形態にかかる監視制御システムの構成例を示す図である。 FIG. 10 is a diagram illustrating a configuration example of the monitoring control system according to the second embodiment.
　本実施形態の監視制御システムは、図１０に示すように、第１の実施形態の監視制御システムに対し、さらに、ＰＬＣ等のコントローラ２で動作させるシーケンスプログラムを編集するツール（ソフトウェア）であるエンジニアリングツール１０１０を有する情報処理装置１０が追加されている。このエンジニアリングツール１０１０を有する情報処理装置１０は、コントローラ２の制御部２０に専用バスまたは専用インタフェース（図１０における８０４）を介して直接接続される。ここでは、説明の簡単のため、エンジニアリングツール１０１０を有する情報処理装置１０とエンジニアリングツール１０１０を区別せず説明する。以下では、第１の実施形態と異なる部分について説明する。 As shown in FIG. 10, the monitoring control system of the present embodiment is an engineering that is a tool (software) that edits a sequence program that is operated by the controller 2 such as a PLC with respect to the monitoring control system of the first embodiment. An information processing apparatus 10 having a tool 1010 is added. The information processing apparatus 10 having the engineering tool 1010 is directly connected to the control unit 20 of the controller 2 via a dedicated bus or a dedicated interface (804 in FIG. 10). Here, for simplicity of explanation, the information processing apparatus 10 having the engineering tool 1010 and the engineering tool 1010 will be described without distinction. Below, a different part from 1st Embodiment is demonstrated.
　次に、本実施形態にかかる監視制御システムの各装置の機能構成について説明する。 Next, the functional configuration of each device of the monitoring control system according to the present embodiment will be described.
　図１１は、本実施形態における上位機器１、コントローラ２、入出力インタフェース装置３、および出力装置７の各装置の構成と、各装置間の指令または通知の流れを示す図である。 FIG. 11 is a diagram showing the configuration of each device of the host device 1, the controller 2, the input / output interface device 3, and the output device 7 in this embodiment, and the flow of instructions or notifications between the devices.
　本実施形態では、エンジニアリングツール１０１０が、特定の出力装置７の出力点８全点に対して、オペレータの操作により出力リードバック診断禁止の指令（禁止指令）を出力するための禁止指令出力処理部（第１の指令出力処理部）１０１１と、オペレータの操作により禁止指令に対する解除指令を出力するための解除指令出力処理部（第２の指令出力処理部）１０１２と、出力装置７の状態を監視するための状態監視処理部（第２の状態監視処理部）１０１３を有する。 In the present embodiment, the engineering tool 1010 outputs a prohibition command output processing unit for outputting an output readback diagnosis prohibition command (prohibition command) to all the output points 8 of the specific output device 7 by an operator's operation. (First command output processing unit) 1011, a cancellation command output processing unit (second command output processing unit) 1012 for outputting a cancellation command for a prohibition command by an operator's operation, and the state of the output device 7 are monitored A state monitoring processing unit (second state monitoring processing unit) 1013 for performing the processing.
　また、エンジニアリングツール１０１０は、禁止指令出力処理部１０１１、解除指令出力処理部１０１２および状態監視処理部１０１３のユーザインタフェースとして、エンジニアリングツール１０１０に備わる入出力装置の表示画面に、禁止指令および解除指令の出力を操作するための操作画面１０Ｃを表示するとともに、コントローラ２からの出力装置７の指令結果通知２０３を取得して、出力リードバック診断結果と禁止指令中の状態を表示する状態表示画面１０Ｄを表示する。図１２に示す操作画面１０Ｃの例では、入出力装置を特定するための出力装置番号毎に、ここでは出力装置７に対して、禁止指令を出力するための指令ボタンと、解除指令を出力するための解除ボタンが表示されている。また、図１２に示す状態表示画面１０Ｄの例では、出力装置番号毎に、故障情報として「正常」または「異常」または「禁止指令中」のいずれかが表示される。このように、禁止指令出力処理部１０１１、解除指令出力処理部１０１２、および状態監視処理部１０１３は、第１の実施形態では上位機器１が備えていた禁止指令出力処理部１１、解除指令出力処理部１２、および状態監視処理部１３と同様の機能を有する。 In addition, the engineering tool 1010 uses the prohibition command output processing unit 1011, the cancellation command output processing unit 1012, and the state monitoring processing unit 1013 as user interfaces on the display screen of the input / output device provided in the engineering tool 1010. An operation screen 10C for operating the output is displayed, a command result notification 203 of the output device 7 from the controller 2 is acquired, and a status display screen 10D for displaying the output readback diagnosis result and the status during the prohibit command is displayed. indicate. In the example of the operation screen 10C shown in FIG. 12, for each output device number for specifying the input / output device, here, a command button for outputting a prohibition command and a release command are output to the output device 7. The release button for is displayed. Also, in the example of the status display screen 10D shown in FIG. 12, “normal”, “abnormal”, or “prohibited command in progress” is displayed as failure information for each output device number. As described above, the prohibition command output processing unit 1011, the cancellation command output processing unit 1012, and the state monitoring processing unit 1013 are the same as the prohibition command output processing unit 11 and the cancellation command output processing that the host device 1 includes in the first embodiment. The same functions as the unit 12 and the state monitoring processing unit 13 are provided.
　一方、上位機器１は、第１の実施形態では備えていた禁止指令出力処理部１１および解除指令出力処理部１２がなく、状態監視処理部（第１の状態監視処理部）１３を有する構成となっている。図１３に上位機器１に備わる入出力装置における状態表示画面１０Ｅの例を示す。なお、状態監視処理部１３の機能および上位機器１のその他の部分の構成・機能は、第１の実施形態で説明したものと同様のものとなっている。 On the other hand, the host device 1 does not have the prohibition command output processing unit 11 and the release command output processing unit 12 provided in the first embodiment, and has a state monitoring processing unit (first state monitoring processing unit) 13. It has become. FIG. 13 shows an example of a status display screen 10E in the input / output device provided in the host device 1. The function of the state monitoring processing unit 13 and the configuration / function of the other parts of the host device 1 are the same as those described in the first embodiment.
　コントローラ２は、禁止指令処理部（第１の指令処理部）２１および解除指令処理部（第２の指令処理部）２２がそれぞれ、当該コントローラ２に直接接続されたエンジニアリングツール１０１０から禁止指令および解除指令を受け、指令結果通知部２３が指令結果通知２０３をエンジニアリングツール１０１０および上位機器１の双方に通知する。このコントローラ２のその他の構成・機能については第１の実施形態で説明したものと同様のものとなっている。 The controller 2 includes a prohibition command processing unit (first command processing unit) 21 and a cancellation command processing unit (second command processing unit) 22, which are prohibited commands and cancellations from the engineering tool 1010 directly connected to the controller 2, respectively. Upon receiving the command, the command result notification unit 23 notifies the command result notification 203 to both the engineering tool 1010 and the host device 1. Other configurations and functions of the controller 2 are the same as those described in the first embodiment.
　出力装置７および操作端９については、第１の実施形態のものと同様である。 The output device 7 and the operation end 9 are the same as those in the first embodiment.
　次に、本実施形態にかかる監視制御システムの動作について説明する。 Next, the operation of the monitoring control system according to this embodiment will be described.
　オペレータが、エンジニアリングツール１０１０から、ある出力装置７に対する禁止指令を出力するよう操作すると、図１２の例ではエンジニアリングツール１０１０上の禁止指令の指令ボタンを押下する操作をすると、エンジニアリングツール１０１０の禁止指令出力処理部１０１１が、コントローラ２に対して、この操作に対応する対象の出力装置単位の禁止指令１０１を出力する。また、オペレータが、エンジニアリングツール１０１０から、ある出力装置７に対する解除指令を出力するよう操作すると、図１２の例では、解除指令の指令ボタンを押下する操作をすると、エンジニアリングツール１０１０の解除指令出力処理部１０１２が、コントローラ２に対して、この操作に対応する対象の出力装置単位の解除指令１０２を出力する。 If the operator operates the engineering tool 1010 to output a prohibition command for a certain output device 7, in the example of FIG. The output processing unit 1011 outputs to the controller 2 a prohibition command 101 for each target output device corresponding to this operation. When the operator operates the engineering tool 1010 to output a release command for a certain output device 7, in the example of FIG. 12, when the operator presses the release command button, the engineering tool 1010 outputs a release command. The unit 1012 outputs to the controller 2 a release command 102 for the target output device corresponding to this operation.
　コントローラ２では、エンジニアリングツール１０１０からの禁止指令１０１または解除指令１０２があると、対応する禁止指令処理部２１または解除指令処理部２２が、受けた指令を禁止指令２０１または解除指令２０２として、入出力インタフェース装置３へ転送する。一方、コントローラ２の指令結果通知部２３は、入出力インタフェース装置３からの指令結果通知３０１を指令結果通知２０３として上位機器１に通知するのみならず、エンジニアリングツール１０１０へも通知する。 In the controller 2, when there is a prohibition command 101 or a cancellation command 102 from the engineering tool 1010, the corresponding prohibition command processing unit 21 or the cancellation command processing unit 22 inputs / outputs the received command as a prohibition command 201 or a cancellation command 202. Transfer to interface device 3. On the other hand, the command result notification unit 23 of the controller 2 not only notifies the host device 1 of the command result notification 301 from the input / output interface device 3 as the command result notification 203 but also notifies the engineering tool 1010.
　エンジニアリングツール１０１０は、コントローラ２から出力装置７の指令結果通知２０３があると、状態監視処理部１０１３にて、図１２に例示する入出力装置の状態表示画面１０Ｄに、対象の出力装置７の故障情報として、出力リードバック診断結果または「禁止指令中」であれば「禁止指令中」の状態を表示する。 When the engineering tool 1010 receives the command result notification 203 of the output device 7 from the controller 2, the status monitoring processing unit 1013 displays the failure of the target output device 7 on the status display screen 10D of the input / output device illustrated in FIG. As information, if the output readback diagnosis result or “prohibited command is in progress”, the status of “prohibited command is in progress” is displayed.
　一方、上位機器１も、コントローラ２から出力装置７の指令結果通知２０３があると、状態監視処理部１３にて、図１３に例示する上位機器１に備わる入出力装置の状態表示画面１０Ｂに、対象の出力装置７の故障情報として、出力リードバック診断結果または「禁止指令中」であれば「禁止指令中」の状態を表示する。 On the other hand, when there is a command result notification 203 of the output device 7 from the controller 2, the host device 1 also displays on the status display screen 10B of the input / output device provided in the host device 1 illustrated in FIG. As the failure information of the target output device 7, if the output readback diagnosis result or "prohibited command is in progress", the status of "prohibited command is in progress" is displayed.
　なお、入出力インタフェース装置３および出力装置７の動作は、前述の第１の実施形態の場合と同様であるので、ここでは説明を省略する。 The operations of the input / output interface device 3 and the output device 7 are the same as in the case of the first embodiment described above, and a description thereof will be omitted here.
　本実施形態によれば、上位機器１によりシステムを監視するオペレータではなく、コントローラ２に接続されたエンジニアリングツール１０１０を操作するオペレータ（例えば、作業現場にいるオペレータ）がこのエンジニアリングツール１０１０の操作画面１０Ｃで禁止指令／解除指令の操作をすることにより、複数の操作端９の交換や補修作業の際の現場での事前作業と事後作業が簡易的な操作で実現でき、確認の手間も含めて作業時間を大幅に短縮することができる。また上位機器１に備わる入出力装置の状態表示画面１０Ｂでも、禁止指令により出力装置７が出力リードバック診断を禁止指令中または禁止指令中以外（通常のリードバック診断中）であることが上位機器１を監視するオペレータも知ることができるので、離れた複数個所に及ぶ作業でも全行程の作業完了時に最終確認が容易にできる。このように、本実施形態によれば、点検や補修作業時に複数の操作端９を離切するケースが生じた場合でも、事前処置と事後処置の操作および確認を簡易化することができる。 According to the present embodiment, an operator who operates the engineering tool 1010 connected to the controller 2 (for example, an operator at the work site) is not an operator who monitors the system with the host device 1, but the operation screen 10C of the engineering tool 1010. By operating the prohibition command / release command in the above, it is possible to perform pre-work and post-work in the field at the time of replacement and repair work of multiple operation terminals 9 with simple operations, including work for confirmation Time can be significantly reduced. In the status display screen 10B of the input / output device provided in the host device 1, the host device indicates that the output device 7 is in the prohibition command or is not in the prohibition command (during normal readback diagnosis) due to the prohibit command. Since the operator who monitors 1 can also know, the final confirmation can be easily performed at the completion of the operation of the entire process even in the operation of a plurality of remote locations. As described above, according to the present embodiment, even when there is a case in which a plurality of operation ends 9 are separated at the time of inspection or repair work, it is possible to simplify the operation and confirmation of the pretreatment and the post treatment.
　以上説明したとおり、第１および第２の実施形態で説明した入出力インタフェース装置３および監視制御システムによれば、出力リードバック診断を行う出力装置７を介して操作端９の制御を行うコントローラ２とその上位機器１を含む監視制御システムにおいて、システムの稼働中に操作端９の補修等を行うために出力装置７の出力点８と操作端９との間を離切する際の事前および事後の処置や確認作業を簡易化することができる。 As described above, according to the input / output interface device 3 and the monitoring control system described in the first and second embodiments, the controller 2 that controls the operation end 9 via the output device 7 that performs output readback diagnosis. And the supervisory control system including the host device 1 before and after the separation between the output point 8 and the operation end 9 of the output device 7 in order to repair the operation end 9 during operation of the system. It is possible to simplify the treatment and confirmation work.
　以上、本発明のいくつかの実施形態を説明したが、これらの実施形態は、例として提示したものであり、発明の範囲を限定することは意図していない。これら新規な実施形態は、その他の様々な形態で実施されることが可能であり、発明の要旨を逸脱しない範囲で、種々の省略、置き換え、変更を行うことができる。これら実施形態やその変形は、発明の範囲や要旨に含まれるとともに、請求の範囲に記載された発明とその均等の範囲に含まれる。 Although several embodiments of the present invention have been described above, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

Claims (4)

  1. 　出力リードバック診断を行う出力装置を介して操作端の制御を行うコントローラと、前記出力装置との間に接続される入出力制御装置であって、
    　前記コントローラ側から第１の指令を受けた場合、該指令に対する指令結果通知として、前記出力装置の出力リードバック診断結果を正常とした指令結果通知を、前記コントローラに通知し、
    　前記コントローラ側から第２の指令を受けた場合、該指令に対する指令結果通知として、前記出力装置の出力リードバック診断結果を前記コントローラに通知する
    　通知処理部を有する、
    　入出力制御装置。     An input / output control device connected between a controller for controlling an operation end via an output device for performing an output readback diagnosis, and the output device,
    When receiving a first command from the controller side, as a command result notification for the command, notify the controller a command result notification that the output readback diagnosis result of the output device is normal,
    When receiving a second command from the controller side, as a command result notification for the command, a notification processing unit for notifying the controller of an output readback diagnosis result of the output device,
    I / O controller.
  2. 　出力リードバック診断を行う出力装置を介して操作端の制御を行うコントローラと、前記出力装置との間に設けられる入出力制御装置における入出力制御方法であって、
    　前記入出力制御装置に備わる制御部が、
    　前記コントローラ側から第１の指令を受けた場合、該指令に対する指令結果通知として、前記出力装置の出力リードバック診断結果を正常とした指令結果通知を、前記コントローラに通知し、
    　前記コントローラ側から第２の指令を受けた場合、該指令に対する指令結果通知として、前記出力装置の出力リードバック診断の結果を前記コントローラに通知する、
    　入出力制御方法。     An input / output control method in an input / output control device provided between a controller that controls an operation end via an output device that performs an output readback diagnosis, and the output device,
    The control unit provided in the input / output control device,
    When receiving a first command from the controller side, as a command result notification for the command, notify the controller a command result notification that the output readback diagnosis result of the output device is normal,
    When receiving a second command from the controller side, as a command result notification for the command, notify the controller the result of the output readback diagnosis of the output device,
    I / O control method.
  3. 　出力リードバック診断を行う出力装置を介して操作端の制御を行うコントローラと、該コントローラとネットワークを介して接続する上位機器と、前記コントローラと前記出力装置との間に設けられる入出力制御装置とで構成される監視制御システムであって、
    　前記上位機器は、
    　第１の指令を出力する第１の指令出力処理部と、
    　第２の指令を出力する第２の指令出力処理部と、
    　出力した指令に対する指令結果通知を受け該指令結果通知に基づき前記出力装置の状態を表示する状態監視処理部と、を有し、
    　前記コントローラは、
    　前記上位機器からの前記第１の指令を前記入出力制御装置に出力する第１の指令処理部と、
    　前記上位機器からの前記第２の指令を前記入出力制御装置に出力する第２の指令処理部と、
    　前記入出力制御装置からの指令結果通知を前記上位機器に通知する指令結果通知部と、を有し、
    　前記入出力制御装置は、
    　前記コントローラ側から第１の指令を受けた場合、指令結果通知として、前記第１の指令中であることを示す情報を含み、前記出力装置の出力リードバック診断結果を正常とした指令結果通知を、前記コントローラに通知し、
    　前記コントローラ側から第２の指令を受けた場合、該指令に対する指令結果通知として、前記出力装置の出力リードバック診断結果を前記コントローラに通知する通知処理部を有し、
    　前記上位機器の状態監視処理部は、前記コントローラ側から受けた指令結果通知に第１の指令中であることを示す情報がある場合、前記出力装置の状態として前記第１の指令中であることを表示し、そうでない場合、前記出力装置の出力リードバック診断結果を表示する
    　監視制御システム。     A controller that controls the operation end via an output device that performs an output readback diagnosis, a host device connected to the controller via a network, and an input / output control device provided between the controller and the output device; A supervisory control system comprising:
    The host device is
    A first command output processing unit for outputting a first command;
    A second command output processing unit for outputting a second command;
    A state monitoring processor that receives a command result notification for the output command and displays the status of the output device based on the command result notification,
    The controller is
    A first command processing unit that outputs the first command from the host device to the input / output control device;
    A second command processing unit that outputs the second command from the host device to the input / output control device;
    A command result notification unit for notifying the host device of a command result notification from the input / output control device;
    The input / output control device includes:
    When receiving the first command from the controller side, the command result notification includes information indicating that the first command is being performed, and a command result notification indicating that the output readback diagnosis result of the output device is normal. , Notify the controller,
    When receiving a second command from the controller side, as a command result notification for the command, a notification processing unit for notifying the controller of an output readback diagnosis result of the output device,
    The state monitoring processing unit of the host device is in the first instruction as the state of the output device when there is information indicating that the instruction is being received in the instruction result notification received from the controller side. If not, the monitoring control system displays the output readback diagnosis result of the output device.
  4. 　出力リードバック診断を行う出力装置を介して操作端の制御を行うコントローラと、該コントローラとネットワークを介して接続する上位機器と、該コントローラに直接接続されるエンジニアリングツールを有する情報処理装置と、前記コントローラと前記出力装置との間に設けられる入出力制御装置とで構成される監視制御システムであって、
    　前記上位機器は、
    　前記エンジニアリングツールによる指令に対する指令結果通知を受け該指令結果通知に基づき前記出力装置の状態を表示する第１の状態監視処理部を有し、
    　前記エンジニアリングツールは、
    　第１の指令を出力する第１の指令出力処理部と、
    　第２の指令を出力する第２の指令出力処理部と、
    　出力した指令に対する指令結果通知を受け該指令結果通知に基づき前記出力装置の状態を表示する第２の状態監視処理部と、を有し、
    　前記コントローラは、
    　前記上位機器からの前記第１の指令を前記入出力制御装置に出力する第１の指令処理部と、
    　前記上位機器からの前記第２の指令を前記入出力制御装置に出力する第２の指令処理部と、
    　前記入出力制御装置からの指令結果通知を前記上位機器および前記エンジニアリングツールを有する情報処理装置に通知する指令結果通知部と、
    　を有し、
    　前記入出力制御装置は、
    　前記コントローラ側から前記第１の指令を受けた場合、該指令に対する指令結果通知として、前記第１の指令中であることを示す情報を含み、前記出力装置の出力リードバック診断結果を正常とした指令結果通知を、前記コントローラに通知し、
    　前記コントローラ側から前記第２の指令を受けた場合、該指令に対する指令結果通知として、前記出力装置の出力リードバック診断結果を前記コントローラに通知する、
    　通知処理部を有し、
    　前記上位機器の前記第１の状態監視処理部および前記エンジニアリングツールの前記第２の状態監視処理部は、前記コントローラ側から受けた指令結果通知に第１の指令中であることを示す情報がある場合、前記出力装置の状態として前記第１の指令中であることを表示し、そうでない場合、前記出力装置の出力リードバック診断結果を表示する
    　監視制御システム。     A controller for controlling an operation end via an output device for performing an output readback diagnosis, a host device connected to the controller via a network, an information processing device having an engineering tool directly connected to the controller, A monitoring control system comprising an input / output control device provided between a controller and the output device,
    The host device is
    Receiving a command result notification for a command by the engineering tool, and having a first status monitoring processing unit for displaying the status of the output device based on the command result notification;
    The engineering tool is
    A first command output processing unit for outputting a first command;
    A second command output processing unit for outputting a second command;
    Receiving a command result notification for the output command, and displaying a status of the output device based on the command result notification;
    The controller is
    A first command processing unit that outputs the first command from the host device to the input / output control device;
    A second command processing unit that outputs the second command from the host device to the input / output control device;
    A command result notification unit for notifying a command result notification from the input / output control device to the information processing device having the host device and the engineering tool;
    Have
    The input / output control device includes:
    When receiving the first command from the controller side, the command result notification for the command includes information indicating that the first command is being executed, and the output readback diagnosis result of the output device is normal Notify the controller of the command result notification,
    When receiving the second command from the controller side, as a command result notification for the command, notify the controller of the output readback diagnosis result of the output device,
    A notification processing unit,
    The first state monitoring processing unit of the host device and the second state monitoring processing unit of the engineering tool have information indicating that the first command is being received in the command result notification received from the controller side. If it is, the monitoring device is configured to display that the first command is being executed as the state of the output device, and to display the output readback diagnosis result of the output device otherwise.
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Citations (4)

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JPH06274298A (en) * 1993-03-23 1994-09-30 Hitachi Ltd Monitoring device for control apparatus
JPH09198128A (en) * 1996-01-17 1997-07-31 Toshiba Corp Alarm management value setting device
JPH11122679A (en) * 1997-10-14 1999-04-30 Katsumata Denki Seisakusho:Kk Remote supervisory control system and remote supervisory control method
JP2008009792A (en) * 2006-06-30 2008-01-17 Hitachi Ltd Communication control system and communication control method

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06274298A (en) * 1993-03-23 1994-09-30 Hitachi Ltd Monitoring device for control apparatus
JPH09198128A (en) * 1996-01-17 1997-07-31 Toshiba Corp Alarm management value setting device
JPH11122679A (en) * 1997-10-14 1999-04-30 Katsumata Denki Seisakusho:Kk Remote supervisory control system and remote supervisory control method
JP2008009792A (en) * 2006-06-30 2008-01-17 Hitachi Ltd Communication control system and communication control method

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