JP2020046746A - Field device information displaying system and field device - Google Patents

Abstract

To display device information of each field device according to a hierarchical arrangement of a control system of an industrial plant without manually inputting configuration data of the control system.SOLUTION: Remote IO communication substrates 23 and 24 recognize the presence of a lower-level remote IO unit 13 on the basis of identification information inputted from the lower level. CPUs of computational devices 15 and 17 recognize the presence of each of substrates 19-37 of the computational devices 15 and 17 on the basis of the identification information inputted from the lower level. Identification information of the remote IO unit 13 for being inputted to the remote IO communication substrates 23 and 24 is added after the identification information of the remote IO communication substrates 23 and 24 for being inputted to the CPUs of the computational devices 15 and 17. An EU 5 recognizes each remote IO unit 13 connected to the lower level of the remote IO communication substrates 23 and 24 including the relationship between the upper level and lower level in hierarchy of a control unit 3 on the basis of the identification information inputted from the computational devices 15 and 17.SELECTED DRAWING: Figure 3

Description

  The present disclosure relates to a system that displays device information of field devices of a plant.

  For example, a plant such as a factory, a power plant, equipment, or a machine is provided with a large number of field devices such as an actuator, a sensor for detecting a physical quantity corresponding to an operation state of an actuator, and a measuring instrument. Further, the plant is provided with a control device that controls the operation of the corresponding actuator according to the physical quantity detected by the sensor, the measuring device, and the like.

  The above-described field device is connected to a remote input / output device, and the remote input / output device is connected to the control device via a wired or wireless field bus. The remote input / output device inputs and outputs signals to and from field devices.

  For example, when receiving a control signal from the control device from the field bus, the remote input / output device inputs the control signal to the actuator. Further, when the sensor outputs the detection signal, the remote input / output device transmits the detection signal to the fieldbus toward the control device.

  In such a control system of a field device of a plant, it is important to grasp information of a field device, a remote input / output device, a control device, and the like installed in the plant. In addition, since field devices, remote input / output devices, control devices, and the like are distributed and installed throughout the plant, it is preferable that such information can be centrally grasped at one place.

  As a proposal related to this point, device information on the field devices of the plant is collected in a portable terminal device such as a tablet, and the position information of the installation location of the field devices stored in the device management database is referred to as the device ID in the device information. There is something to inquire using.

  In this proposal, a screen in which the collected device information of the field device is laid out at the installation location in the plant map using the position information of the field device queried by the device ID is displayed on the portable terminal device. This proposal has an advantage that the installation location of the field device can be easily confirmed on the screen of the mobile terminal device (for example, Patent Document 1).

  However, for example, when the device information of the field device is displayed, it is not possible to easily grasp the device information of the hierarchy of the field device in the plant control system in the display mode of this proposal.

  Therefore, there is a proposal to display field devices in a plant control system according to a directory hierarchy. By using the display form of this proposal, it is possible to easily grasp the device information of the field device of which hierarchy on the control system (for example, Patent Document 2).

Japanese Patent No. 5351802 JP 2000-47778 A

  By the way, in order to display each field device according to the directory hierarchy, it is necessary to convert directory information of each field device into data and record it in a memory or the like. Since the configuration of a plant control system differs depending on each plant, it is necessary to use manual labor when converting directory information of field devices into data.

  The present disclosure has been made in view of the above circumstances, and an object of the present disclosure is to provide device information of each field device in a hierarchical structure of each field device in the control system without manually inputting configuration data of a plant control system. It is intended to be able to display according to the arrangement of.

To achieve the above object, a field device according to a first aspect of the present disclosure includes:
An information acquisition unit that acquires identification information of the lower-level field device from a lower-level field device connected to itself;
An information holding unit that holds its own identification information,
With the connection with a higher-level device, the identification information of the information holding unit, if the information acquisition unit has acquired the identification information of the lower-level field device, the identification information of the lower-level field device And an initial processing unit for outputting to the higher-level device;
When its own self-diagnosis is performed, an information output unit that outputs its own self-diagnosis result including the identification information of the information holding unit to the higher-level device,
An information relay unit that, when a self-diagnosis result including the identification information of the lower-level field device is input from the lower-level field device, outputs the input self-diagnosis result of the lower-level field device to the higher-level device; When,
Is provided.

  In general, an alarm state of a control system including a plurality of field devices may occur due to the operation of a plurality of field devices. Therefore, in order to display the field device that has generated the alarm state, information indicating the relationship between the alarm state and the field device that has generated the alarm state is required.

  On the other hand, in the field device according to the first aspect of the present disclosure, the self-diagnosis result output from the information output unit to the higher-level device relates to its own operation state. The self-diagnosis result input from the lower-level field device and output from the information relay unit to the higher-level device relates to the operation state of the lower-level field device.

  That is, the alarm state detected by the self-diagnosis of the field device originates from the field device that has performed the self-diagnosis detecting the alarm state. For this reason, if the system configuration of the control system including a plurality of field devices is known, the source of the alarm state detected from the self-diagnosis result can be displayed as the source field device in the control system.

  Then, in the field device according to the first aspect of the present disclosure, when a device is connected to a higher device, the initial processing unit outputs the own identification information held in the information holding unit to the higher device. For this reason, the higher-level device can be made to recognize the existence of itself connected to the lower level of the higher-level device.

  At this time, the higher-level device may be, for example, the same field device as itself. Alternatively, the control device may control a field device including itself.

  If the device itself is the lowest field device on the hierarchy, only its own identification information is output to the higher device. However, when a field device lower than the own device exists on the hierarchy, the identification information of the lower field device is also output to the higher device.

  That is, when a lower-level field device is connected to itself at the time of connection of a higher-level device, the initial processing unit replaces the identification information of the lower-level field device acquired by the information acquisition unit with its own identification information. And output to the host device. This allows the higher-level device to recognize the presence of a field device connected further below the higher-level device, including the field device connected to the lower level of the higher-level device. .

  When a plurality of field devices are connected in a hierarchical manner, the identification information of the lower field devices is sequentially output to the upper field devices. For this reason, a higher-order field device cumulatively recognizes the presence of field devices connected hierarchically below itself.

  Therefore, the highest-order device recognizes the presence of all the field devices connected to itself, including the hierarchical pattern of each field device. In other words, the highest-level device grasps the configuration data of the control system using a plurality of field devices without manual operation.

  Therefore, according to the field device according to the first aspect of the present disclosure, when a plant is configured using a plurality of field devices, each field device can be configured without manually inputting configuration data of a plant control system. Device information can be displayed according to the hierarchical arrangement of each field device in the control system.

  Further, in the field device according to the second aspect of the present disclosure, in the field device according to the first aspect of the present disclosure, the initial processing unit may include the identification information of the lower-level field device acquired by the information acquisition unit. The identification information of the information holding unit is added so as to be continuous in the order corresponding to the hierarchical order with the lower-level field device.

  According to the field device according to the second aspect of the present disclosure, in the field device according to the first aspect of the present disclosure, in the order of identification information to be recognized by a higher-level device, which is its own identification information and which is the lower-level field device. It is possible to make the higher-level device grasp the identification information.

  Further, in the field device according to the third aspect of the present disclosure, in the field device according to the first or second aspect of the present disclosure, when the information acquisition unit acquires the identification information of the lower-level field device, the information output unit The information relay unit allocates a storage area of the self-diagnosis result of the lower-level field device, which is output to the higher-level device, to the memory to which the storage area of the self-diagnosis result to be output to the higher-level device is allocated. The information output unit and the information relay unit read a self-diagnosis result of each storage area of the memory and output the self-diagnosis result to the higher-level device in response to a request from the higher-level device.

  According to the field device according to the third aspect of the present disclosure, in the field device according to the first or second aspect of the present disclosure, when the information acquiring unit acquires the identification information of the field device connected to the lower level, The storage area for the self-diagnosis result of the lower-level field device is allocated to the memory to which the storage area for the self-diagnosis result is allocated.

  Then, the self-diagnosis result of the lower-level field device output by the information relay unit to the higher-level device is stored in the storage area of the memory corresponding to the lower-level field device.

  Therefore, when the self-diagnosis result of each storage area of the memory is read out and output upon request from a higher-level device, all the self-diagnosis results of itself and the field devices connected below the same are output to the higher-level device.

  For this reason, the self-diagnosis result of each field device can be output to a higher-level device so that the self-diagnosis result of which field device can be surely distinguished and grasped.

To achieve the above object, a field device information display system according to a fourth aspect of the present disclosure includes:
A plurality of field devices according to claim 1, 2 or 3, which are connected in a hierarchy to form a control system;
Based on the contents of the identification information of each of the field devices provided in the device connected to the uppermost field device of the plurality of field devices, the initial processing unit of the highest field device recognized. A layer specifying unit that specifies a layer pattern of each of the field devices in the control system;
The self-diagnosis result of each of the field devices output by the information output unit and the information relay unit of the top-level field device is displayed on the screen of the control system in which the field devices are laid out in the hierarchical pattern specified by the hierarchical specifying unit. In, a result display unit for displaying as a self-diagnosis result of the field device corresponding to the identification information included in the self-diagnosis result,
Is provided.

  According to the field device information display system according to the fourth aspect of the present disclosure, a device is connected above the highest field device among a plurality of field devices connected in a hierarchical manner. Then, the initial processing unit of the uppermost field device recognizes the identification information of its own held in the information holding unit and the identification information of the lower field device acquired by the information acquisition unit by the upper device. Let it.

  Here, for example, an upper-level field device of the two field devices having a higher-level and lower-level connection relationship on the hierarchy is identified by the initial processing unit of the higher-level field device among the two field devices. Recognize information together. Therefore, the existence of two field devices having an upper and lower relationship on the hierarchy of the control system is recognized including the upper and lower relationships on the hierarchy.

  Recognition of the existence of a lower-level field device by a higher-level field device in such a form is cumulatively performed from the lowest-level field device to the highest-level field device of the control system. Therefore, the information acquisition unit of the uppermost field device of the control system acquires the identification information of all the field devices connected below the uppermost field device in a form in which the hierarchical relationship on the hierarchy can be understood.

  In addition to this, the initial control unit of the highest-level field device of the control system, in addition to the identification information of the information holding unit itself, sends the fields connected to the higher-level field device to the devices connected to the upper-level field device. The presence of the device is recognized including the hierarchical relationship on the hierarchy.

  Therefore, the hierarchy specifying unit of the device connected above the top field device of the control system determines the hierarchical pattern of each field device in the control system from the hierarchical relationship of the recognized control system on each field device. Identify.

  In addition, information on the self-diagnosis result of each field device is input to a device connected to the uppermost field device of the control system from the information output unit and the information relay unit of the highest field device.

  The input information of the self-diagnosis result of each field device is displayed by the result display unit on the screen of the control system displaying each field device in the hierarchical pattern specified by the hierarchy specifying unit. The result display unit displays information on the self-diagnosis result at a display location of the field device corresponding to the identification information included in the self-diagnosis result.

  Therefore, when a plant is configured using a plurality of field devices, the device information of each field device can be hierarchically arranged in the control system without manually inputting the configuration data of the plant control system. It can be displayed according to.

  Further, the field device information display system according to a fifth aspect of the present disclosure is the field device information display system according to the fourth aspect of the present disclosure, wherein the result display unit is configured so that the self-diagnosis result is in an alarm state. And a self-diagnosis result of a field device higher than the field device is displayed in the form of the alarm state.

  According to the field device information display system according to the fifth aspect of the present disclosure, in the field device information display system according to the fourth embodiment of the present disclosure, a field device whose self-diagnosis result is in an alarm state is displayed in an alarm state. You. In addition, field devices whose self-diagnosis results are higher in the hierarchy of the control system than field devices in an alarm state are also displayed in an alarm state.

  For this reason, the field devices connected to the upper side of the field device for which the self-diagnosis result is in the alarm state are also displayed in the form of the alarm state so that the system of the field device in which the self-diagnosis result is in the alarm state can be easily understood. can do.

  Further, the field device information display system according to the sixth aspect of the present disclosure is the field device information display system according to the fourth or fifth aspect of the present disclosure, wherein the result display unit includes the self-diagnosis result of each of the field devices. Are displayed in a form corresponding to the content of the self-diagnosis result.

  According to the field device information display system according to the sixth aspect of the present disclosure, in the field device information display system according to the fourth or fifth aspect of the present disclosure, a self-diagnosis result of a field device is displayed in a different manner for each type. Can be done.

  According to the present disclosure, it is possible to display device information of each field device according to a hierarchical arrangement of each field device in the control system without manually inputting configuration data of a plant control system. can do.

1 is an explanatory diagram illustrating a schematic configuration of a plant control system according to an embodiment of the present disclosure. 2 is a flowchart illustrating a procedure of an initial setting process executed by a microprocessor of a board other than the remote IO communication board of FIG. 1 and a microprocessor of each remote IO unit according to a program. 2 is a flowchart illustrating a procedure of an initial setting process executed by a microprocessor of the remote IO communication board in FIG. 1 according to a program. 2 is a flowchart illustrating a procedure of an initial setting process executed by a CPU of each arithmetic device in FIG. 1 according to a program in a ROM. FIG. 2 is an explanatory diagram showing a storage area of alarm information secured in a memory of a microprocessor on a controller board of the arithmetic device of FIG. 1. FIG. 2 is an explanatory diagram showing a storage area of alarm information secured in a memory of a microprocessor on a controller board of the arithmetic device of FIG. 1. 2 is a flowchart showing a procedure of a self-diagnosis process executed by a microprocessor of each board other than the controller board and the remote IO communication board of FIG. 1 and a microprocessor of each remote IO unit according to a program. 2 is a flowchart illustrating a procedure of a self-diagnosis process executed by a microprocessor of the remote IO communication board in FIG. 1 according to a program. 2 is a flowchart illustrating a procedure of a self-diagnosis process executed by a microprocessor of each controller board in FIG. 1 according to a program. 2 is a flowchart illustrating a procedure of a process for specifying a system configuration of a control system in the engineering computer of FIG. 1. FIG. 11 is an explanatory diagram showing configuration data of a system configuration of a control unit generated in a system configuration specifying process of FIG. 10 and stored in a memory. 2 is a flowchart showing a procedure of processing for displaying alarm information of each field device of the control system in the monitoring computer of FIG. 1. FIG. 2 is an explanatory diagram showing an example of a monitor screen of alarm information of a control unit which can be displayed on a display in the monitoring computer of FIG. 1. FIG. 2 is an explanatory diagram showing an example of a list screen of alarm information of a control unit which can be displayed on a display in the monitoring computer of FIG. 1. FIG. 3 is an explanatory diagram showing another example of a monitor screen of alarm information of a control unit which can be displayed on a display in the monitoring computer of FIG. 1. FIG. 9 is an explanatory diagram showing still another example of a monitoring screen of alarm information of a control unit which can be displayed on a display in the monitoring computer of FIG. 1.

  Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. FIG. 1 is an explanatory diagram illustrating a plant control system according to an embodiment of the present disclosure.

  A plant control system (corresponding to a field device information display system in the claims; hereinafter, abbreviated as "control system") 1 according to the embodiment shown in FIG. This is a system that controls the operation of the device.

  The control system 1 includes a control unit 3 for performing operation control of a field device, an engineering computer 5 for setting a control target of the field device, and a monitoring computer 7 for monitoring an operation state of the control unit 3.

  The control unit 3, an engineering computer (hereinafter abbreviated as “EU”) 5, and a monitoring computer (abbreviated as “MU”) 7 are interconnected by a LAN 9 and a router 11. I have. In this embodiment, the LAN 9 and the router 11 are provided in two systems to achieve system redundancy. However, system redundancy is not essential.

  The control unit 3 has a plurality of remote IO units 13, 13,...

  Each remote IO unit 13 inputs and outputs signals to and from a plurality of devices (not shown) arranged in various parts of the plant. Therefore, the remote IO unit 13 includes DI (Digital In), DO (Digital Out), AI (Analog In), and AO (Analog Out) modules for the device.

  Devices to be signal input / output by each remote IO unit 13 include, for example, an actuator, a measuring instrument, a sensor, and the like. Therefore, signals input and output by the remote IO unit 13 to and from the device include, for example, a control signal to an actuator (not shown), an output signal of a measuring instrument, an output signal of a sensor that detects an operation state of the actuator, and the like. I have.

  The arithmetic unit 15 generates a command for operation control of each device (actuator, measuring instrument, etc.) in the plant. Then, the arithmetic unit 15 outputs the generated command to the remote IO unit 13 corresponding to each device. Further, the arithmetic unit 15 obtains output signals of each device (measuring device, sensor, etc.) from the remote IO unit 13 corresponding to each device. The arithmetic unit 15 generates an operation control command for each device (an actuator, a measuring instrument, or the like) by referring to the acquired output signal of each device.

  The arithmetic unit 15 includes a controller board 19 for performing the above-described processing, a CAN communication board 21, two remote IO (In Out) communication boards 23 and 24, two DI boards 25 and 27, a DO board 29, and an AI board. 31 and an AO substrate 33. Each of the substrates 19 to 33 constitutes a module.

  Each of the boards 19 to 33 of the arithmetic unit 15 is connected to a lower part of the arithmetic unit 15 by a bus line. For communication on the bus line, for example, a communication standard such as compact PCI can be used.

  The CAN communication board 21 is a module that controls communication of the arithmetic unit 15 with the EU 5 and the MU 7 on the LAN 9 in accordance with the CAN (Control Area Network) standard. The communication standard on the LAN 9 may be a standard other than CAN.

  The two remote IO communication boards 23 and 24 are modules that control communication of the arithmetic unit 15 with each remote IO unit 13. A plurality of remote IO units 13 are respectively connected below the remote IO communication boards 23 and 24.

  For connection of each remote IO unit 13 to each remote IO communication board 23, 24, for example, a bus line such as a field bus can be used. Some or all of the bus lines may be constituted by optical fiber lines. When an optical fiber line is used for a part of the bus line, a photoelectric conversion module is provided between the optical fiber line and the electric signal line. When the photoelectric conversion module is used for the bus line, the photoelectric conversion module can be included in the remote IO unit 13.

  The two DI boards 25 and 27 and the DO board 29 control input and output of digital signals to and from each remote IO unit 13 of the arithmetic unit 15.

  The AI board 31 and the AO board 33 control input and output of analog signals to and from each remote IO unit 13 of the arithmetic unit 15.

  The arithmetic unit 17 has the same configuration as the arithmetic unit 15 except that the remote IO communication boards 23 and 24 of the arithmetic unit 15 are replaced with two pulse counter boards 35 and 37. The two pulse counter boards 35 and 37 also constitute a module like the other boards 19, 21, 25 to 33.

  The boards 19, 21, 25 to 37 of the arithmetic unit 17 are connected by a bus line. For communication on the bus line, for example, a communication standard such as compact PCI can be used.

  The two pulse counter boards 35 and 37 count the pulses of the output signals of the devices (measuring devices, sensors, etc.) obtained from the remote IO units 13 by the remote IO communication boards 23 and 24 of the arithmetic unit 15. The count values of the pulses by the pulse counter boards 35 and 37 are transmitted to the EU 5 via the LAN 9 and the router 11. The EU 5 generates a command for operation control of each corresponding device (actuator, measuring instrument, and the like) in consideration of the received count value.

  Each of the remote IO units 13 described above and each of the boards 19 to 37 of the arithmetic devices 15 and 17 are field devices constituting the control unit 3. Each of the remote IO units 13 and each of the boards 19 to 37, which are field devices, has a microprocessor (not shown) mounted thereon.

  Each microprocessor performs an initial setting process when starting operation of the control system 1. The initial setting process is a process for causing the EU 5 to recognize the system configuration of the plurality of remote IO units 13, 13,...

  Each microprocessor periodically performs a self-diagnosis process after the operation of the control system 1 starts. The self-diagnosis process is a process for performing a self-diagnosis on the operating state of each of the remote IO units 13 on which each microprocessor is mounted and each of the boards 19 to 37 of the arithmetic devices 15 and 17 (where each microprocessor is mounted).

  Each microprocessor has a memory holding identification information. The identification information is information for identifying the remote IO unit 13 on which each microprocessor is mounted and the boards 19 to 37 of the arithmetic devices 15 and 17. Therefore, the identification information includes an individual identifier assigned to each of the boards 19 to 37 of each of the remote IO units 13 and the arithmetic units 15 and 17.

  The identifier of the identification information is, for example, “CPU NO: 1” for the controller board 19 of the arithmetic device 15, “CAN NO: 1” for the CAN communication board 21, and “R-BUS NO” for the two remote IO communication boards 23 and 24. : 1 "and" R-BUS NO: 2 ". Also, the two DI substrates 25 and 27 are “DI NO: 1” and “DI NO: 2”, the DO substrate 29 is “DO NO: 1”, the AI substrate 31 is “AI NO: 1”, and the AO substrate 33 is “AO NO: 1” can be used. Further, the two pulse counter boards 35 and 37 can be "PC NO: 1" and "PC NO: 2".

  The identifier of the identification information is, for example, “RDI NO: 1” for the DI module (including the photoelectric conversion module) of the remote IO unit 13 connected to the remote IO communication board 23 and “RDO NO: 1” for the DO module. It can be. Further, the AI module can be “RAI NO: 1” and the AO module can be “RAO NO: 1”.

  Similarly, for the identifier of the identification information, for example, the DI module (including the photoelectric conversion module) of the remote IO unit 13 connected to the remote IO communication board 24 is “RDI NO: 2”, and the DO module is “RDO NO: 2”. ]. Furthermore, the AI module can be “RAO NO: 2” and the AO module can be “RAO NO: 2”.

  Note that the identification information may be generated by, for example, a dip switch instead of being stored in the memory of the microprocessor. When the identification information is generated by a dip switch, a dip switch (not shown) is mounted on each of the remote IO units 13 and each of the boards 19 to 37 of the arithmetic units 15 and 17. Each DIP switch is set according to an individual identifier assigned to each of the boards 19 to 37 of the remote IO unit 13 and the arithmetic units 15 and 17 at the mounting destination.

  In the memories of the computing devices 15 and 17, a storage area for alarm information is secured. The alarm information is information for notifying the operating state of the mounting destination of each microprocessor (the boards 19 to 37 of the remote IO unit 13 and the computing devices 15 and 17). The alarm information is output by each microprocessor as necessary in the self-diagnosis processing described above.

  In the control system 1 of the present embodiment, the memory or the DIP switch of the microprocessor mounted on each of the boards 19 to 37 of each of the remote IO units 13 and the arithmetic units 15 and 17 for holding or generating the above-described identification information is provided. , Corresponds to an information holding unit in the claims.

  The EU 5 is arranged, for example, at a location that manages the operation of the field devices constituting the control unit 3.

  When the operation of the control system 1 is started, the EU 5 acquires the identification information of the boards 19 to 37 of the remote IO unit 13 and the arithmetic devices 15 and 17 that constitute the control unit 3 and changes the system configuration of the control unit 3. Identify. The process of specifying the system configuration of the control unit 3 is executed by the CPU of the EU 5 according to a program stored in a ROM (both not shown). The configuration data indicating the specified system configuration of the control unit 3 is stored in the nonvolatile memory (not shown) of the EU5.

  The MU 7 is arranged together with the EU 5 at a location where the operation of the field device constituting the control unit 3 is managed, for example. Note that a plurality of MUs 7 can be used as needed.

  After the operation of the control system 1 starts, the MU 7 acquires the alarm information of the remote IO unit 13 and the boards 19 to 37 of the arithmetic devices 15 and 17 that constitute the control unit 3 and displays the contents of the acquired alarm information on the display (FIG. (Not shown). The process of acquiring the alarm information and displaying it on the display is executed by the CPU of the MU 7 according to a program stored in a ROM (both not shown).

  The MU 7 uses the configuration data stored in the memory of the EU 5 to change the alarm information of the boards 19 to 37 of the remote IO unit 13 and the arithmetic units 15 and 17 according to the system configuration of the control unit 3. To display.

  Next, an initial setting process performed by each microprocessor with the remote IO unit 13 and the boards 19 to 37 of the arithmetic units 15 and 17 constituting the control unit 3 connected as shown in FIG. This will be described with reference to flowcharts of FIGS.

  The initialization process described below is executed according to a program stored in the memory of each microprocessor.

  First, FIG. 2 shows an initial setting process performed by the microprocessor of each remote IO unit 13, each board 19, 21, 25 to 33 of the arithmetic unit 15 and each board 19, 21, 25 to 37 of the arithmetic unit 17. It will be described with reference to FIG. This initialization process is performed by the microprocessor of the field device located at the lowest level among the field devices constituting the control unit 3.

  The microprocessor checks whether or not the operation of the control system 1 is started (Step S1). If the operation is not started (NO in Step S1), the microprocessor ends the initial setting process. On the other hand, when the operation is started (YES in step S1), the microprocessor outputs the identification information of the memory or the DIP switch to the higher connection partner (step S3), and ends the initialization processing.

  That is, in step S3, the microprocessor of each remote IO unit 13 outputs the identification information including the identifier of each remote IO unit 13 to the remote IO communication boards 23 and 24 of the arithmetic device 15 as its own device identification information. Further, the microprocessor of each of the boards 19, 21, 25 to 33 of the arithmetic unit 15 outputs the identification information including the identifier of each of the boards 19, 21, 25 to 33 to the arithmetic unit 15 as self-device identification information. Similarly, the microprocessor of each board 19, 21, 25 to 37 of the arithmetic unit 17 outputs the identification information including the identifier of each board 19, 21, 25 to 37 to the arithmetic unit 17 as its own device identification information.

  Specifically, for example, the microprocessor of each remote IO unit 13 outputs the identification information of the DI module of the remote IO unit 13 to the remote IO communication boards 23 and 24 of the arithmetic device 15 as its own device identification information. The identification information of the DI module of the remote IO unit 13 includes an identifier such as “RDI NO: 1” and “RDI NO: 2” described above.

  Further, for example, the microprocessor of the controller board 19 of each of the arithmetic units 15 and 17 transmits the identification information “CPU NO: 1” of the controller board 19 to the CPU (not shown) of the arithmetic units 15 and 17 by using the self-device identification information. Output as Further, for example, the microprocessor of the CAN communication board 21 of the arithmetic devices 15 and 17 outputs the identification information “CAN NO: 1” of the CAN communication board 21 to the CPU of the arithmetic devices 15 and 17 as its own device identification information. .

  Further, for example, the microprocessors of the two DI boards 25 and 27 of the arithmetic units 15 and 17 provide the CPUs of the arithmetic units 15 and 17 with the identification information “DI NO: 1” and “DI” of the two DI boards 25 and 27, respectively. NO: 2 "is output as self-device identification information. Further, for example, the microprocessor of the DO board 29 of the arithmetic devices 15 and 17 outputs the identification information “DO NO: 1” of the DO board 29 to the CPU of the arithmetic devices 15 and 17 as its own device identification information.

  Also, for example, the microprocessors of the AI boards 31 and AO boards 33 of the arithmetic units 15 and 17 provide the CPUs of the arithmetic units 15 and 17 with the identification information “AI NO: 1” and “AO” of the AI boards 31 and AO boards 33, respectively. "NO: 1" is output as self-device identification information.

  Next, an initialization process performed by the microprocessor of each of the remote IO communication boards 23 and 24 of the arithmetic unit 15 will be described with reference to FIG. This initial setting process is a process performed by a microprocessor of a field device located at an intermediate level among field devices constituting the control unit 3.

  The microprocessor of each of the remote IO communication boards 23 and 24 checks whether or not the operation of the control system 1 is started (step S11). If the operation is not started (NO in step S11), the microprocessor performs the initial setting process. finish. On the other hand, when the operation is started (YES in step S11), the microprocessor outputs the identification information of the memory or the DIP switch to a higher connection partner (step S13).

  That is, in step S13, the microprocessor of each of the remote IO communication boards 23 and 24 of the arithmetic unit 15 sends its own device identification information to the CPU of the arithmetic unit 15 which is a higher connection partner of each of the remote IO communication boards 23 and 24. Output. The self-device identification information is identification information including the identifier of each of the remote IO communication boards 23 and 24.

  In the control system 1 of the present embodiment, the microprocessor of each of the remote IO communication boards 23 and 24 sends the identification information “R-BUS NO: 1”, “ R-BUS NO: 2 "is output as self-device identification information.

  Further, the microprocessor acquires the identification information of the lower device of the remote IO communication boards 23 and 24 (Step S15). Further, the microprocessor adds the identification information of the memory or the DIP switch as the identification information of the own device to the acquired identification information of the lower device. Then, the identification information of the lower device to which the identification information of the own device is added is output to the higher connection partner (step S17), and the initial setting process ends.

  That is, in step S15, the microprocessor of each of the remote IO communication boards 23 and 24 outputs the identification information output by the microprocessor of each of the remote IO units 13 connected below the remote IO communication boards 23 and 24 in step S3 of FIG. To get.

  In step S17 of FIG. 3, the microprocessors of the remote IO communication boards 23 and 24 add identification information including the identifiers of the remote IO communication boards 23 and 24 to the identification information acquired from each remote IO unit 13, Add as identification information.

  In the control system 1 of the present embodiment, the microprocessor of each of the remote IO communication boards 23 and 24 adds the identification information of each of the remote IO communication boards 23 and 24 before the identification information of the DI module of the remote IO unit 13. . That is, identification information such as “R-BUS NO: 1” and “R-BUS NO: 2” is added before identification information such as “RDI NO: 1” and “RDI NO: 2”.

  The appearance identification information indicates that the remote IO unit 13 having the DI module or the like is connected to the lower part of each of the remote IO communication boards 23 and 24.

  Then, the identification information from each of the remote IO units 13 to which the identification information of the remote IO communication boards 23 and 24 has been added is output to the CPU of the arithmetic unit 15 which is the upper connection partner of the remote IO communication boards 23 and 24.

  Next, an initialization process performed by the CPUs of the arithmetic devices 15 and 17 according to a program stored in the ROM will be described with reference to FIG. This initial setting process is a process performed by the CPU of the field device located at the highest level among the field devices constituting the control unit 3.

  The CPU of each of the arithmetic devices 15 and 17 checks whether or not the operation of the control system 1 is started (step S21). If the operation is not started (NO in step S21), the initialization process ends. On the other hand, when the operation is started (YES in step S21), the CPU outputs the identification information of the memory or the DIP switch to a higher-order connection partner (step S23).

  That is, in step S23, the CPUs of the arithmetic devices 15 and 17 send the identification information including the identifiers of the arithmetic devices 15 and 17 to the EU5 which is a higher connection partner of the arithmetic devices 15 and 17 as their own device identification information. Output. At this time, the CPU outputs the identification information (“CU NO: 1”, “CU NO: 2”) of each of the arithmetic devices 15 and 17 as its own device identification information.

  Further, the CPU acquires the identification information of the lower devices of the arithmetic devices 15 and 17 (step S25). Then, the microprocessor allocates a storage area for the alarm information whose source is a lower device of the acquired identification information (step S27).

  That is, in step S25, the CPU of the arithmetic unit 15 determines that each of the boards 19 to 33 and each remote IO unit 13 of the arithmetic unit 15 connected to the lower order of the arithmetic unit 15 are in step S3 in FIG. 2, step S13 in FIG. The identification information output in step S17 is obtained.

  Similarly, the CPU of the arithmetic unit 17 has the identification information output by the boards 19, 21, 25 to 37 of the arithmetic unit 17 connected to the lower part of the arithmetic unit 17 in steps S3 of FIG. 2, steps S13 and S17 of FIG. To get.

  In addition, in step S27 of FIG. 4, the CPU of the arithmetic unit 15 allocates a storage area of the alarm information generated from the remote IO units 13 and the boards 19 to 33 of the arithmetic unit 15 to the memory of the arithmetic unit 15. .

  Similarly, the CPU of the arithmetic unit 17 allocates a storage area of the alarm information generated from each of the boards 21 to 25 to 37 to the memory of the arithmetic unit 17.

  Specifically, as shown in the explanatory diagram of FIG. 5, storage areas 41 to 61 for alarm information are secured in the memory 39 of the arithmetic unit 15. The respective storage areas 41 to 61 are allocated as alarm information storage areas corresponding to the respective boards 19 to 33 of the arithmetic unit 15 and the respective modules of the respective remote IO units 13 from which the identification information has been acquired in step S25.

  Further, a storage area (not shown) for alarm information corresponding to the arithmetic unit 15 itself is allocated to the memory 39 of the arithmetic unit 15. In this storage area, the arithmetic unit 15 itself has a self-diagnosis function for occurrence of an alarm condition, and is used when alarm information is generated when an alarm condition occurs. In the present embodiment, it is assumed that the arithmetic unit 15 itself has a self-diagnosis function of an alarm state.

  Similarly, as shown in the explanatory diagram of FIG. 6, storage areas 41, 43, 47 to 55, 65, and 67 for alarm information are secured in the memory 63 of the arithmetic unit 17. The storage areas 41, 43, 47 to 55, 65, and 67 are allocated as alarm information storage areas respectively corresponding to the boards 19, 21, 25 to 37 of the arithmetic unit 17 from which the identification information has been acquired in step S25.

  Further, a storage area (not shown) for alarm information corresponding to the arithmetic unit 17 itself is allocated to the memory 63 of the arithmetic unit 17. In this storage area, the arithmetic unit 17 itself has a self-diagnosis function for occurrence of an alarm condition, and is used when generating alarm information when an alarm condition occurs. In the present embodiment, it is assumed that the arithmetic unit 17 itself has a self-diagnosis function of an alarm state.

  In addition, as the memories 39 and 63 of the arithmetic devices 15 and 17, for example, a hard disk or a flash memory can be used.

  Further, as shown in FIG. 4, the CPUs of the arithmetic units 15 and 17 add the identification information of the memory or the DIP switch as the identification information of the own device to the acquired identification information of the lower device. Then, the identification information of the lower device to which the identification information of the own device is added is output to the upper connection partner (step S29), and the initial setting process ends.

  That is, in step S29, the CPU of the arithmetic unit 15 replaces the identification information including the identifier of the arithmetic unit 15 with the identification information acquired from each of the boards 19 to 33 and each of the remote IO units 13 of the arithmetic unit 15 with its own device identification information. To be added.

  In the control system 1 of the present embodiment, for example, the CPU of the arithmetic device 15 is positioned before the identification information “R-BUS NO: 1” and “R-BUS NO: 2” of each of the remote IO communication boards 23 and 24. The identification information “CU NO: 1” of the arithmetic unit 15 is added.

  Here, the identification information of “R-BUS NO: 1” and “R-BUS NO: 2” with the identification information of “CU NO: 1” added to the front side is transmitted to the remote IO communication boards 23 and 24 by the arithmetic unit 15. Is connected to the lower level of

  Then, the identification information of each of the boards 19 to 33 of the arithmetic unit 15 to which the identification information of the arithmetic unit 15 is added is output to the EU5 which is a higher-order connection partner of the arithmetic unit 15.

  Similarly, the CPU of the arithmetic unit 17 adds identification information including the identifier of the arithmetic unit 17 to the identification information acquired from each of the boards 19, 21, 25 to 37 of the arithmetic unit 17 as self-device identification information.

  Then, the identification information of each board 19, 21, 25 to 37 of the arithmetic device 17 to which the identification information of the arithmetic device 17 is added is output to the EU 5 which is a higher-order connection partner of the arithmetic device 17.

  As is clear from the above description, in the control system 1 of the present embodiment, step S15 in the flowchart of FIG. 3 and step S25 in the flowchart of FIG. Has become.

  In the control system 1 of the present embodiment, step S3 in the flowchart of FIG. 2, steps S13 and S17 in FIG. 3, and steps S23 and S29 in FIG. Is a process corresponding to.

  Further, in the control system 1 of the present embodiment, step S27 in FIG. 4 is a process corresponding to the area allocating unit in claims.

  The memories 39, 63 of the microprocessor of the controller board 19 of the arithmetic units 15, 17 correspond to the memories in the claims.

  In the above description, the microprocessor performs the initial setting process with different contents depending on the hierarchy of the field devices constituting the control unit 3. However, the microprocessor of the field device of each layer may perform the same initial setting process regardless of the layer of the field device constituting the control unit 3.

  In that case, the contents of the initialization processing performed by the microprocessor can be, for example, as follows. That is, the connection state (the presence or absence of connection) of the upper and lower field devices with respect to the device itself is confirmed, and the hierarchy of the field device constituting the control unit 3 is determined from the result. Then, an initial setting process of the content corresponding to the determined hierarchy is executed.

  Note that the above-described initial setting process may be executed each time the system configuration of the field device constituting the control unit 3 is changed when the operation of the control system 1 with the changed system configuration is started. Good.

  Next, after the operation of the control system 1 is started, the self-diagnosis processing performed by the microprocessors of the boards 19 to 37 of the remote IO unit 13 and the arithmetic units 15 and 17 constituting the control unit 3 will be described with reference to FIGS. This will be described with reference to a flowchart.

  The self-diagnosis process is a process in which each microprocessor diagnoses, for example, whether or not an alarm state has occurred in each of the boards 19 to 37 of the remote IO unit 13 and the arithmetic devices 15 and 17. Here, the alarm state may be, for example, a state in which an abnormal voltage that does not occur during normal operation is input, a state in which a signal line is disconnected, a state in which communication abnormality with a connection partner has occurred, and the like.

  First, the self-diagnosis processing performed by the microprocessor of each remote IO unit 13, each board 19, 21, 25 to 33 of the arithmetic unit 15 and each board 19, 21, 25 to 37 of the arithmetic unit 17 is shown in FIG. It will be described with reference to FIG. This self-diagnosis process is a process performed by the microprocessor of the field device located at the lowest level among the field devices constituting the control unit 3.

  The microprocessor checks whether or not the execution cycle of the self-diagnosis has arrived (step S41). If the execution cycle has not arrived (NO in step S41), the microprocessor ends the self-diagnosis processing. On the other hand, when the execution cycle has arrived (YES in step S41), the microprocessor performs a self-diagnosis and checks whether an alarm state has occurred (step S43).

  If an alarm condition has not occurred (NO in step S43), the self-diagnosis process ends, and if an alarm condition has occurred (YES in step S43), the microprocessor generates alarm information (step S45). . This alarm information can be composed of, for example, a character string including a code indicating self-diagnosis data, a code indicating a source of an alarm condition, a code indicating a generated alarm condition, and the like.

  The code indicating the source of the alarm condition can be, for example, the identification information described above. Further, in order to reduce the length of the character string, for example, the number may be one or more digits corresponding to the above-described identification information on a one-to-one basis.

  Then, the microprocessor of the remote IO unit 13 outputs the generated alarm information to the remote IO communication boards 23 and 24 of the arithmetic unit 15 which is a higher connection partner. Further, the microprocessors of the boards 19, 21, 25 to 33 of the arithmetic unit 15 and the microprocessors of the boards 19, 21, 25 to 37 of the arithmetic unit 17 transmit the generated alarm information to a higher connection partner. The output is output to the arithmetic unit 15 (step S47). Then, the self-diagnosis processing ends.

  Next, a self-diagnosis process performed by the microprocessor of each of the remote IO communication boards 23 and 24 of the arithmetic unit 15 will be described with reference to FIG. This self-diagnosis process is a process performed by a microprocessor of a field device located at an intermediate level among field devices constituting the control unit 3.

  The microprocessor of each of the remote IO communication boards 23 and 24 checks whether or not alarm information has been input from each of the remote IO units 13 which are lower-level devices of the remote IO communication boards 23 and 24 (step S51).

  When the alarm information is input from each remote IO unit 13 (YES in step S51), the microprocessor relays the input alarm information and outputs the relayed alarm information to the CPU of the arithmetic unit 15 which is a higher connection partner. (Step S53), the self-diagnosis processing ends.

  On the other hand, if the alarm information has not been input from each remote IO unit 13 (NO in step S51), the microprocessor checks whether the execution cycle of the self-diagnosis has arrived (step S55).

  If the execution period of the self-diagnosis has not arrived (NO in step S55), the self-diagnosis process ends. On the other hand, when the execution cycle has arrived (YES in step S55), the microprocessor performs a self-diagnosis and checks whether an alarm state has occurred (step S57).

  If the alarm state has not occurred (NO in step S57), the self-diagnosis processing ends, and if the alarm state has occurred (YES in step S57), the microprocessor generates alarm information (step S59). .

  Then, the microprocessor outputs the generated alarm information to the CPU of the arithmetic unit 15 which is a higher-order connection partner (step S61), and ends the self-diagnosis processing.

  Next, a self-diagnosis process performed by the CPUs of the arithmetic units 15 and 17 according to a program stored in the ROM will be described with reference to FIG. This self-diagnosis process is a process performed by the CPU of the field device located at the highest level among the field devices constituting the control unit 3.

  The CPU of each of the arithmetic devices 15 and 17 checks whether alarm information has been input from a lower device of the arithmetic devices 15 and 17 (step S71).

  That is, in step S71, the CPU of the arithmetic unit 15 checks whether alarm information has been input from each of the boards 19 to 33 and each of the remote IO units 13 of the arithmetic unit 15 connected below the arithmetic unit 15. .

  Similarly, the CPU of the arithmetic unit 17 checks whether alarm information has been input from each of the boards 19, 21, 25 to 37 of the arithmetic unit 17 connected below the arithmetic unit 17.

  When alarm information is input from lower-level devices of the arithmetic devices 15 and 17 (YES in step S71), the CPU stores the input alarm information in the corresponding storage areas of the memories 39 and 63 of the arithmetic devices 15 and 17. After the storage (step S73), the self-diagnosis processing ends.

  That is, in step S73, the CPU of the arithmetic unit 15 sends the alarm information from each of the boards 19 to 33 and each of the remote IO units 13 of the arithmetic unit 15 connected below the arithmetic unit 15 to the corresponding memory 39 of the microprocessor. To be stored in the storage areas 41 to 61.

  Similarly, the CPU of the arithmetic unit 17 stores the alarm information from each of the boards 19, 21, 25 to 37 of the arithmetic unit 17 connected to the lower level of the arithmetic unit 17 in the corresponding storage area 41, in the memory 63 of the microprocessor. 43, 47 to 55, 65, 67.

  On the other hand, when the alarm information has not been input from the lower devices of the arithmetic devices 15 and 17 (NO in step S71), the CPU checks whether the execution cycle of the self-diagnosis has arrived (step S75).

  When the execution cycle has arrived (YES in step S75), the CPU executes a self-diagnosis and checks whether or not an alarm state has occurred (step S77).

  If an alarm condition has not occurred (NO in step S77), the self-diagnosis process ends, and if an alarm condition has occurred (YES in step S77), the CPU generates alarm information (step S79).

  Then, the CPU stores the generated alarm information in the corresponding storage areas (not shown) of the memories 39 and 63 of the arithmetic devices 15 and 17 (step S81), and ends the self-diagnosis processing.

  If the execution cycle of the self-diagnosis has not arrived in step S75 (NO), the CPU checks whether or not a notification request for alarm information has been input from the MU 7 as a higher connection partner (step S75). S83).

  If the notification request of the alarm information has not been input (NO in step S83), the self-diagnosis processing ends. If a notification request for alarm information has been input (YES in step S83), the CPU sends all the alarm information stored in the storage areas 41 to 61, 65, and 67 of the memories 39 and 63 to the MU 7. The self-diagnosis process is finished (Step S85).

  As is clear from the above description, in the control system 1 of the present embodiment, steps S43 to S47 in the flowchart of FIG. 7 and steps S57 to S61 in the flowchart of FIG. This is processing corresponding to the section. Steps S77 to S85 in the flowchart of FIG. 9 are also processes corresponding to the information output unit in claims.

  In the control system 1 of the present embodiment, step S53 in FIG. 8 and steps S73, S83, and S85 in FIG. 9 are processes corresponding to the information relay unit in the claims.

  Next, a process of specifying the system configuration of the control unit 3 executed by the CPU of the EU 5 according to a program stored in a ROM (both not shown) will be described with reference to a flowchart of FIG.

  The CPU of the EU 5 checks whether or not the identification information of each of the remote IO units 13 and the boards 19 to 37 of the arithmetic devices 15 and 17 has been input from the arithmetic devices 15 and 17 (step S81). If the identification information has not been input (NO in step S81), the system configuration specifying process ends.

  On the other hand, if the identification information has been input (YES in step S81), the CPU of the EU 5 determines the hierarchical structure of the field devices constituting the control unit 3, ie, the system of the control unit 3, based on the input identification information. The configuration is specified (step S93). The field devices constituting the control unit 3 are the remote IO units 13 and the boards 19 to 37 of the arithmetic units 15 and 17.

  Further, the CPU of the EU 5 generates configuration data indicating the specified system configuration of the control unit 3 and stores it in the nonvolatile memory (step S95), and then ends the system configuration specifying process. As the nonvolatile memory for storing the configuration data, for example, a hard disk or a flash memory can be used.

  As is clear from the above description, in the control system 1 of the present embodiment, step S93 in the flowchart of FIG. 10 is a process corresponding to the hierarchy specifying unit in the claims.

  Here, the configuration data 69 of the control unit 3 stored in the memory of the EU 5 in step S95 of FIG. 10 is, for example, in units of the control system 1 connected on the same LAN 9 as shown in the explanatory diagram of FIG. Generated.

  Therefore, the configuration data 69 shown in FIG. 11 includes the identification information corresponding to the field devices (each of the remote IO units 13 and each of the boards 19 to 37 of the arithmetic devices 15 and 17) that constitute the control unit 3. The configuration data 69 includes corresponding identification information corresponding to EU5 and MU7 on the same LAN 9 as the field devices configuring the control unit 3.

  Specifically, the identification information of the configuration data 69 is arranged in the order of the control system 1, the EU5, the two MUs 7, and the control unit 3, as shown in FIG. That is, the identification information is arranged in the order of “BLOCK NO: 1”, “EU NO: 1”, “MU NO: 1”, “MU NO: 2”, and “CS (Control Station) NO: 1”. .

  Following these, in the configuration data 69, identification information of the field devices constituting the control unit 3 is arranged. Specifically, the identification information of the controller board 19 of the arithmetic unit 15 and the identification information of the CAN communication board 21 are arranged in order. That is, the identification information is arranged in the order of “CS NO: 1 CU NO: 1 CPU NO: 1”, and “CS NO: 1 CU NO: 1 CAN NO: 1”.

  In the configuration data 69, identification information of three remote IO units 13 (two AI modules and AO modules) connected below the remote IO communication board 23 of the arithmetic unit 15 is arranged. That is, the identification information of the two AI modules “CS NO: 1 CU NO: 1 R-BUS NO: 1 RAI NO: 1”, “CS NO: 1 CU NO: 1 R-BUS NO: 1 RAI NO: 2” Are arranged in order. After that, the identification information of the AO module “CS NO: 1 CU NO: 1 R-BUS NO: 1 RAO NO: 1” is arranged.

  Further, in the configuration data 69, identification information of three remote IO units 13 (two DI modules and DO modules) connected below the remote IO communication board 24 of the arithmetic unit 15 is arranged. That is, the identification information of the two DI modules “CS NO: 1 CU NO: 1 R-BUS NO: 2 RDI NO: 1”, “CS NO: 1 CU NO: 1 R-BUS NO: 2 RDI NO: 2” Are arranged in order. After that, identification information of the DO module “CS NO: 1 CU NO: 1 R-BUS NO: 2 RDO NO: 1” is arranged.

  In the configuration data 69, identification information of the two DI boards 25 and 27, the DO board 29, the AI board 31, and the AO board 33 of the arithmetic unit 15 is arranged. That is, the identification information of the DI boards 25 and 27, “CS NO: 1 CU NO: 1 DI NO: 1”, and “CS NO: 1 CU NO: 1 DI NO: 2” are arranged in order. After that, each identification information of the DO board 29, the AI board 31, and the AO board 33 is “CS NO: 1 CU NO: 1 DO NO: 1”, “CS NO: 1 CU NO: 1 AI NO: 1”, “CS NO: 1 CU NO: 1 AO NO: 1 "are arranged in order.

  Further, in the configuration data 69, identification information of the controller board 19 of the arithmetic unit 17 and identification information of the CAN communication board 21 are arranged in order. That is, the identification information is arranged in the order of “CS NO: 1 CU NO: 2 CPU NO: 1”, “CS NO: 1 CU NO: 2 CAN NO: 1”.

  In the configuration data 69, identification information of the two pulse counter boards 35 and 37 of the arithmetic unit 17 are arranged in order. That is, the identification information is arranged in the order of “CS NO: 1 CU NO: 2 PC NO: 1” and “CS NO: 1 CU NO: 2 PC NO: 2”.

  Further, in the configuration data 69, identification information of the two DI boards 25 and 27, the DO board 29, the AI board 31, and the AO board 33 of the arithmetic unit 17 is arranged. That is, the identification information “CS NO: 1 CU NO: 2 DI NO: 1” and “CS NO: 1 CU NO: 2 DI NO: 2” of the DI boards 25 and 27 are arranged in order. Thereafter, the identification information of the DO board 29, the AI board 31, and the AO board 33 is “CS NO: 1 CU NO: 2 DO NO: 1”, “CS NO: 1 CU NO: 2 AI NO: 1”, and “CS”. NO: 1 CU NO: 2 AO NO: 1 "are arranged in order.

  Subsequently, a process of displaying alarm information of a field device constituting the control unit 3 executed by the CPU of each MU 7 according to a program stored in a ROM (both not shown) will be described with reference to a flowchart of FIG. explain. The field devices constituting the control unit 3 are the remote IO units 13 and the boards 19 to 37 of the arithmetic units 15 and 17.

  The CPU of each MU 7 checks whether or not the update period of the display of the alarm information has arrived (step S101). If the update period has not arrived (NO in step S101), the alarm information display process ends. . On the other hand, when the update cycle has arrived (YES in step S101), the CPU outputs a notification request for alarm information to arithmetic devices 15, 17 via LAN 9 (step S103), and determines whether or not alarm information has been input. Is confirmed (step S105).

  If the alarm information is not input from the arithmetic devices 15 and 17 (NO in step S105), step S105 is repeated until input. If alarm information has been input (YES in step S105), the CPU refers to the configuration data of the control unit 3 stored in the memory of the EU 5 (step S107). Then, the display mode of the alarm information according to the system configuration of the control unit 3 specified from the referred configuration data is determined (step S109).

  Then, the CPU updates the display of the alarm information of the control system 1 on the display (not shown) of the MU 7 to the determined display mode (step S111), and ends the alarm information display processing.

  As is clear from the above description, in the control system 1 of the present embodiment, steps S109 and S111 in the flowchart of FIG. 12 are processes corresponding to the result display unit in the claims.

  In the control system 1 of the present embodiment configured as described above, the identification information of the remote IO unit 13 is transmitted from the remote IO unit 13 configuring the control unit 3 to the remote IO communication boards 23 and 24 connected to the host. Is output. For this reason, the remote IO communication boards 23 and 24 recognize the existence of the remote IO unit 13 connected to the lower level thereof from the identification information input from the partner connected to the lower level.

  Similarly, in the control system 1 of the present embodiment, each of the boards 19 to 37 of the arithmetic units 15 and 17 constituting the control unit 3 is sent to the CPUs of the arithmetic units 15 and 17 connected to the higher order. To 37 are output.

  At this time, after the identification information of the remote IO communication boards 23 and 24 output from the remote IO communication boards 23 and 24 to the CPUs of the computing devices 15 and 17, the remote IO input to the remote IO communication boards 23 and 24 follows. The identification information of the unit 13 is added.

  When the identification information of each of the boards 19 to 37 output from each of the boards 19 to 37 to the CPU of the arithmetic devices 15 and 17 is output from the arithmetic devices 15 and 17 to the EU5, the identification information of each of the boards 19 to 37 is output. The identification information of the arithmetic units 15 and 17 is added before the identification information.

  That is, the identification information of each of the boards 19 to 37 and each of the remote IO units 13 of the arithmetic devices 15 and 17 that are input to the CPUs of the arithmetic devices 15 and 17 correspond to the field devices and arithmetic devices 15 and It is a format in which 17 pieces of identification information are sequentially and sequentially added to the head. The identification information of the format is output from the CPUs of the arithmetic units 15 and 17 to the EU5.

  For this reason, the EU 5 uses the identification information input from the arithmetic devices 15 and 17 to control the remote IO units 13 below the remote IO communication substrates 23 and 24 in addition to the substrates 19 to 37 of the arithmetic devices 15 and 17. It can be recognized including the hierarchical relationship of the control unit 3 on the hierarchy.

  That is, if a microprocessor mounted on each of the boards 19 to 37 of the arithmetic devices 15 and 17 and each remote IO unit 13 is used, the EU 5 uses the identification information input from the arithmetic devices 15 and 17 to generate the configuration data of the control unit 3. 69 will be generated. That is, the EU 5 grasps the configuration data 69 of the control unit 3 without manual operation.

  Therefore, when the alarm information of each of the boards 19 to 37 of the control unit 3 and each of the remote IO units 13 input from the arithmetic units 15 and 17 is displayed by the MU 7, the MU 7 generates the configuration data of the control unit 3 generated by the EU 5. Reference is made to FIG. Thus, the boards 19 to 37 and the remote IO units 13 in the alarm state can be displayed on the display of the MU 7 according to the hierarchical arrangement in the control unit 3.

  In general, in the control system 1, the operation of a plurality of elements among the boards 19 to 37 of the arithmetic devices 15 and 17 and the remote IO units 13 may act in combination to generate an alarm state. In this case, for example, in order to identify and display the cause of the alarm state that occurred in the MU 7, it is necessary to manually input information indicating the relationship between the generated alarm state and the source of the alarm state to the MU 7. is there.

  On the other hand, in the control system 1 of the present embodiment, what is displayed by the MU 7 is that the microprocessors of the boards 19 to 37 of the arithmetic units 15 and 17 and the remote IO units 13 constituting the control unit 3 perform self-diagnosis. Alarm status. That is, the alarm state by the self-diagnosis is generated in the self-diagnosed field device.

  Therefore, by receiving the alarm information together with the identification information of the generation source from the arithmetic units 15 and 17, the generation source of the alarm information is specified using the configuration data 69 of the EU 5, and the arrangement of the specified field device in the control unit 3 is determined. It can be displayed clearly.

  FIG. 13 is an explanatory diagram showing an example of a monitor screen of the alarm information of each of the boards 19 to 37 of the arithmetic devices 15 and 17 and each of the remote IO units 13 which can be displayed on a display (not shown) of the MU 7.

  On the monitoring screen 71 in the example shown in FIG. 13, among the identification information of the eight control units 3 arranged below the identification information “BLOCK NO: 1” of the control system 1, the identification information of the eighth control unit 3 “ CS No .: 8 "has been developed.

  Then, the identification information “CU NO: 1” of the first arithmetic unit arranged below the identification information “CS NO: 8” of the eighth control unit 3 is developed. Further, of the identification information of the two DI boards and the remote IO communication board arranged below the identification information of the arithmetic unit “CU NO: 1”, the identification information “R-BUS NO: 1 of the remote IO communication board” Has been expanded.

  Below the identification information “R-BUS NO: 1” of the remote IO communication board, identification information of three AI boards, an AO board, three DI boards, and two DO boards is developed. That is, “AI NO: 1” to “AI NO: 3”, “AO NO: 1” to “AO NO: 3”, “DI NO: 1” to “DI NO: 3”, “DO NO: 1” , “DO NO: 2” in this order.

  In the monitoring screen 71 shown in FIG. 13, an alarm state has occurred on the second DO board, and is highlighted in reverse. In addition, the identification information “R-BUS NO: 1” of the remote IO communication board connected to the host and the identification information “CU NO: 1” of the first processing unit connected to the host are also in the alarm state. It is highlighted in reverse display along with the identification number “DO NO: 2” of the DO board.

  The monitoring screen 71 displays the system of the control unit 3 by referring to the configuration data 69 of the control unit 3 stored in the memory of the EU 5 using the alarm information obtained by requesting the arithmetic units 15 and 17 by the MU 7. The display mode can be set according to the configuration.

  It is assumed that an alarm condition occurs in a plurality of field devices, and the plurality of field devices in which the alarm condition has occurred are directly or indirectly connected to a common upper-level field device. In this case, it is not possible to determine the level of handling the alarm information in the upper hierarchy simply by simply highlighting the identification information of the common field device in reverse.

  Therefore, for example, a priority is set to the alarm state that has occurred, and when an alarm state occurs in a plurality of field devices, a common upper field device is emphasized in a manner corresponding to the alarm state with the highest priority. You may make it display.

  Here, the priority of the alarm state may be set, for example, in descending order of urgency of the action determined from the content of the code indicating the alarm state of the alarm information. In addition, a setting may be made such that the priority of an alarm state in which the response after the occurrence has not progressed becomes higher.

  When the user clicks on the identification number that has been highlighted in reverse on the monitoring screen 71, the field device having the clicked identification number and the field devices connected thereunder are referenced by referring to the configuration data 69 of the EU5. Can be specified.

  Further, field devices in an alarm state (outputting alarm information) among the specified field devices are extracted from the alarm information obtained by requesting the arithmetic units 15 and 17, and are shown in the explanatory diagram of FIG. As in the list screen 73, all can be displayed in a list. At this time, if the above-described priority is set in the alarm state, the alarm state with a higher priority may be arranged and displayed at a higher position on the list screen 73.

  Further, referring to the configuration data 69 of the EU 5, the MU 7 may display a monitoring screen 77 of a layout that reproduces the connection relationship of each field device in the control system 1 as shown in the explanatory diagram of FIG. On the monitoring screen 77, rectangular symbols corresponding to the respective field devices are displayed in different modes according to the priority of the alarm state.

  Further, in the monitoring screen 77, the symbols painted black indicate the alarm state with the highest priority, and thereafter, the alarm state with the lower priority is shown in the order of the coarse hatch symbol and the fine hatch symbol. Note that a blank symbol indicates that no alarm condition has occurred. In addition, blinking or animation display may be added to the symbol display mode to increase the number of priority levels that can be expressed.

  Further, the alarm state of each of the boards 19 to 37 in the arithmetic units 15 and 17 may be notified by displaying a monitor screen 79 as shown in the explanatory diagram of FIG. The monitoring screen 79 has a mode in which the layout of each of the boards 19 to 37 when the board is inserted into the socket of the board in the housing of the arithmetic devices 15 and 17 is reproduced.

  In the monitoring screen 79, similarly to the monitoring screen 77 in FIG. 15, the priority of the alarm state can be expressed by coloring the area corresponding to each of the boards 19 to 37. In addition, blinking or animation display may be added to the display mode of each area to increase the expressible priority levels.

  In the above-described embodiment, a case has been described in which the flowcharts of FIGS.

  However, each remote IO unit 13, each board 19 to 33 of the arithmetic unit 15, the microprocessor of each board 19, 21, 25 to 37 of the arithmetic unit 17, and a part or all of the CPU of the arithmetic unit 15, 17 Alternatively, the configuration may be such that an initial setting process of a common procedure is performed.

  Similarly, the self-diagnosis processing described with reference to the flowcharts of FIGS. 7 to 9 may be changed to a common procedure.

  Further, in the control system 1 of the present embodiment, the arithmetic units 15 and 17 themselves have a self-diagnosis function for occurrence of an alarm state, and generate alarm information when an alarm state occurs. However, the arithmetic units 15 and 17 do not have to have a self-diagnosis function of generating an alarm state by themselves.

  In that case, the processing of steps S75 to S81 in the flowchart of FIG. 9 can be omitted. Then, in step S71 of FIG. 9, when the alarm information from the lower device has not been input (NO), the CPUs of the arithmetic units 15 and 17 receive the notification request of the alarm information from the MU 7 in step S83. It can be a procedure for shifting to a process of confirming whether or not the event has occurred.

1 Plant control system (field device information display system)
3 Control unit 5 Engineering computer (EU, hierarchy specifying unit)
7 Monitoring computer (MU, result display section)
9 LAN
11 router 13 remote IO unit 15, 17 arithmetic unit (information acquisition unit, initial processing unit, area allocation unit, information output unit, information relay unit)
19 Controller board (information holding unit)
21 CAN communication board (information holding unit)
23, 24 Remote IO communication board (information storage unit)
25, 27 DI board (information holding unit)
29 DO board (information holding unit)
31 AI board (information holding unit)
33 AO substrate (information storage unit)
35, 37 pulse counter board (information holding unit)
39, 63 memory 41 to 61, 65, 67 storage area 69 configuration data 71 monitoring screen 73 list screen 77 monitoring screen 79 monitoring screen

Claims (6)

An information acquisition unit that acquires identification information of the lower-level field device from a lower-level field device connected to itself;
An information holding unit that holds its own identification information,
With the connection with a higher-level device, the identification information of the information holding unit, if the information acquisition unit has acquired the identification information of the lower-level field device, the identification information of the lower-level field device And an initial processing unit for outputting to the higher-level device;
When its own self-diagnosis is performed, an information output unit that outputs its own self-diagnosis result including the identification information of the information holding unit to the higher-level device,
An information relay unit that, when a self-diagnosis result including the identification information of the lower-level field device is input from the lower-level field device, outputs the input self-diagnosis result of the lower-level field device to the higher-level device; When,
Field devices equipped with.   The initial processing unit, the identification information of the lower-level field device acquired by the information acquisition unit, the identification information of the information holding unit, continuous in the order corresponding to the hierarchical order with the lower-level field device The field device according to claim 1, wherein the field device is added to perform the operation.   When the information obtaining unit obtains the identification information of the lower-level field device, the information relay unit outputs the self-diagnosis result to a memory to which a storage area of the self-diagnosis result is output to the higher-level device. An area allocating unit that allocates a storage area of a self-diagnosis result of the lower-level field device to be output to the higher-level device, wherein the information output unit and the information relay unit respond to a request from the higher-level device. 3. The field device according to claim 1, wherein a self-diagnosis result of each storage area of said memory is read and output to said higher-level device. A plurality of field devices according to claim 1, 2 or 3, which are connected in a hierarchy to form a control system;
Based on the contents of the identification information of each of the field devices provided in the device connected to the uppermost field device of the plurality of field devices, the initial processing unit of the highest field device recognized. A layer specifying unit that specifies a layer pattern of each of the field devices in the control system;
The self-diagnosis result of each of the field devices output by the information output unit and the information relay unit of the top-level field device is displayed on the screen of the control system in which the field devices are laid out in the hierarchical pattern specified by the hierarchical specifying unit. In, a result display unit for displaying as a self-diagnosis result of the field device corresponding to the identification information included in the self-diagnosis result,
A field device information display system comprising:   5. The field device information according to claim 4, wherein the result display unit displays the self-diagnosis result of the field device whose self-diagnosis result is in an alarm state and the self-diagnosis result of a higher-level field device of the field device in the form of the alarm state. 6. Display system.   The field device information display system according to claim 4, wherein the result display unit displays the self-diagnosis result of each of the field devices in a form according to the content of the self-diagnosis result.

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