JP5208710B2 - Plant operation monitoring control system and plant operation monitoring control method - Google Patents

Description

  The present invention relates to a plant operation monitoring control system and a plant operation monitoring control method capable of changing the operation screen allocation of a monitoring device efficiently and easily.

  A plant operation monitoring and control system applied for the purpose of operation monitoring and control of a nuclear power plant or an industrial plant is a monitoring device that can display a screen on a display such as a CRT to centrally monitor the operation state and operation of the plant. And a control device for controlling the plant via a local network (LAN) for transmitting control data. In the plant operation monitoring and control system, the operation and monitoring of the plant are intensively performed by a plurality of monitoring devices. Each monitoring device is assigned with a process or a system for performing a driving operation and monitoring. In other words, each monitoring device is assigned an operation screen for a process to be monitored.

Examples of the above-described conventional plant operation monitoring control system and plant operation monitoring control method are described in, for example, JP-A-2001-290530 (Patent Document 1) and JP-A-2001-290533 (Patent Document 2). There are a plant operation monitoring control system and a plant operation monitoring control method.
JP 2001-290530 A JP 2001-290533 A

  In the above-described conventional plant operation monitoring control system and plant operation monitoring control method, for example, when a facility is remodeled and the operation is confirmed during a periodic plant inspection period, more monitoring devices are used for a specific process in the plant than during normal operation. There may be a shortage of monitoring devices when a monitoring request is generated, or when a monitoring device is replaced or failed.

  In such a case, if the operation screen assignment of the monitoring device can be changed quickly and easily, it is possible to easily review the reduction of operators and the monitoring process while maintaining the operation monitoring function. However, in the conventional plant operation monitoring control system and the plant operation monitoring control method, it has been impossible to respond to a user's request to change the operation screen assignment of the monitoring device quickly and easily.

  There are two methods for changing the operation screen assignment adopted in the conventional plant operation monitoring control system. The first method is an operation screen graphic for all the processes to be operated and controlled by the plant operation monitoring control system. Data and operation screen system data (hereinafter collectively referred to as “operation screen data”) are registered in advance in all monitoring devices, and each time the operation screen assignment is changed, each monitoring device is assigned an operation monitoring control target. This is a method of assigning and setting the processes to be performed. In the second method, among all the processes to be controlled by the plant operation monitoring control system, the process for operation monitoring control is assigned to each monitoring device first, and the operation screen data of the assigned process is held in each monitoring device. In principle, this is a method of rewriting the operation screen data of each monitoring device every time the operation screen assignment is changed.

  When the first method is adopted and a plant operation monitoring control system with many monitoring devices and operation screen numbers is constructed like a nuclear reprocessing plant, every monitoring is changed every time the operation screen specifications are changed. It is necessary to update the operation screen data registered in the device. In addition, although the operation screen data for only a part of the processes is actually used, the operation screen data for all the processes is held for each monitoring device, so that each monitoring device has useless data that is not used. Due to the increase in the amount of data, the data processing load is more than necessary, which is inefficient.

  That is, in the plant operation monitoring and control system adopting the first method, the operation screen allocation change of the monitoring device is usually kept to the minimum necessary. In the plant operation monitoring and control system adopting the first method, It is not practical to frequently change the operation screen assignment of the monitoring device.

  On the other hand, when the plant operation monitoring control system is constructed by adopting the second method, since the operation screen data is registered according to the current operation monitoring control target process, when the operation screen allocation is changed, The operation screen data of the process related to the operation monitoring control target after the change is usually unregistered. Then, in principle, it is necessary to change the existing operation screen data to new operation screen data every time the operation screen assignment is changed. However, changing the operation screen data requires work by dedicated equipment and specialized technicians, and also requires various procedures for equipment modification, which requires considerable effort and time.

In order to solve the above-described problems, a plant operation monitoring and control system according to the present invention includes at least one monitoring device that performs plant operation and monitoring, at least one control device that controls the plant, It comprises an operation screen data management device that collectively stores all operation screen data that need to be displayed on the monitoring device when performing operation and monitoring, and the operation screen data management device and each of the monitoring devices are The operation screen data management device can receive the operation screen allocation change command from the monitoring device, and the operation screen data required by each monitoring device is acquired from the operation screen data stored in the operation screen data management device. The monitoring devices are connected to each other in advance and display the operation screen data necessary for display when they perform the operation and monitoring. Acquired and stored from the operation screen data management device, the currently stored operation screen data is changed to the operation screen data acquired every time it is acquired, and the operation screen data management device becomes an operation monitoring control target Process importance classification information that associates safety importance with a process, monitoring target process information that indicates what process each monitoring device is to be monitored when the operation screen allocation change command is received, and When the assignment of the operation screen for the first monitoring device is changed based on the operation screen assignment change command sent from the monitoring device, the process that is excluded from the operation monitoring control target due to the change is high. There, the first step of the importance in the monitoring device other than the monitoring apparatus "high" does not allow the allocation change if not operation monitored and controlled operation screen allocation Changeable-size Parts and further comprising a.

In order to solve the above-described problems, a plant operation monitoring and control method according to the present invention performs plant operation and monitoring with at least one monitoring device, and controls the plant with at least one control device. In the method, all operation screen data that need to be displayed on the monitoring device when operating and monitoring the plant are collectively stored in the operation screen data management device, and the operation screen data management device is configured to perform the monitoring. The operation screen allocation change command is received from the device, and the operation screen data necessary for display when each monitoring device performs its own operation and monitoring is acquired from the operation screen data management device and stored. The stored operation screen data is changed to the operation screen data acquired each time the operation screen data is acquired. Process importance classification information associating a process to be controlled and safety importance, and a monitoring target process indicating which process each monitoring device is monitoring when receiving the operation screen assignment change command Based on the information and the operation screen assignment change command sent from the monitoring device, when the assignment of the operation screen is changed for the first monitoring device, the process that is excluded from the operation monitoring control target due to the change is important. It is “high”, and the assignment change is not permitted when the process of the importance “high” is not a target of operation monitoring control in the monitoring device other than the first monitoring device .

  In order to solve the above-described problems, a plant operation monitoring and control method according to the present invention performs plant operation and monitoring with at least one monitoring device, and controls the plant with at least one control device. In the method, all operation screen data that need to be displayed on the monitoring device when operating and monitoring the plant are collectively stored in the operation screen data management device, and the operation screen data management device is configured to perform the monitoring. The operation screen allocation change request is received from the device, and the operation screen data necessary for display when each of the monitoring devices performs its own operation and monitoring is acquired from the operation screen data management device and stored. And

  According to the present invention, the operation screen data management device that stores all operation screen data that needs to be displayed on each monitoring device of the plant operation monitoring control system is provided, and each monitoring device is required from the operation screen data management device. Since operation screen data can be acquired and the current operation screen data can be freely changed or updated, operation screen allocation can be performed more efficiently and easily compared to conventional plant operation monitoring control systems or plant operation monitoring control methods. Can be provided.

  Hereinafter, a plant operation monitoring control system and a plant operation monitoring control method according to the present invention will be described with reference to the accompanying drawings.

  FIG. 1 is a schematic diagram showing a basic configuration of a plant operation monitoring control system 10 which is an embodiment of a plant operation monitoring control system according to the present invention.

  A plant operation monitoring control system 10 shown in FIG. 1 is a system that monitors and controls the operation of part or all of a plant, and monitors at least one monitoring unit such as three units that monitors the operation state of the operation monitoring control target. A field in which at least one control device 17 to 19 such as three devices for controlling the operation state of the devices 11 to 13 and the operation monitoring control target is an operation monitoring control unit of the monitoring devices 11 to 13 and the control devices 17 to 19. Monitor by dividing into 21-23.

  In the operation monitoring control system 10 shown in FIG. 1, the number of the monitoring devices 11 to 13 and the control devices 17 to 19, and the fields 21 to 21 that are monitored and controlled by the monitoring devices 11 to 13 and the control devices 17 to 19. The number 23 is an example and is not limited to the number shown in FIG. Further, in the operation monitoring control system 10 shown in FIG. 1, the numbers of the monitoring devices 11 to 13 and the control devices 17 to 19 are 1: 1 correspondence, but it is not necessarily required to be 1: 1 correspondence.

  The monitoring devices 11 to 13 and the control devices 17 to 19, the first control device 17 and the field 21, the second control device 18 and the field 22, and the third control device 19 and the field 23 are operation monitoring. Information necessary for executing the control operation (hereinafter referred to as “control information”) is connected by a control information network 25 that can transmit to each other, and the plant operation monitoring control system 10 shown in FIG. Then, the first monitoring device 11 and the first control device 17 perform the operation monitoring control of the field 21, the second monitoring device 12 and the second control device 18 perform the operation monitoring control of the field 22, and the third monitoring. The device 13 and the third control device 19 can perform the operation monitoring control of the field 23.

  Moreover, in the plant operation monitoring control system 10, in addition to the monitoring devices 11 to 13 and the control devices 17 to 19 described above, it is necessary to display on the monitoring devices 11 to 13 when performing the operation and monitoring of the fields 21 to 23. An operation screen data management device 30 that collectively stores all screen data (hereinafter referred to as “operation screen data”) is further provided. The operation screen data management device 30 and each of the monitoring devices 11 to 13 include: The network 32 is mainly used to transmit data necessary for operation management from the operation screen data management device 30 to each of the monitoring devices 11 to 13.

  The first monitoring device 11 of the plant operation monitoring control system 10 has an input function and an output function as a man-machine interface, and an input / output unit 34 that performs operations and status display related to operation, operation screen allocation change, and the like. Then, information indicating the content of the driving operation (hereinafter referred to as “driving operation information”) is received from the input / output unit 34, and control command information corresponding to the driving operation content based on the received driving operation information is generated. 1, while receiving information indicating the state of the field 21 (hereinafter referred to as “state information”) from the first control device 17, the state based on the received state information is input / output unit. The monitor control information transmission / reception part 35 which produces | generates the status display information for displaying on 34, and transmits to the input / output part 34 is provided.

  The first monitoring device 11 has a built-in storage unit (not shown in FIG. 1) for storing electronic information, and the storage unit includes operation screen data used for displaying the operation state of the field 21 to be monitored. An operation monitoring table 37 is stored. The driving monitoring table 37 is associated with driving operation information and control command information, and status information and status display information, and the monitoring control information transmitting / receiving unit 35 refers to the driving monitoring table 37 to input / output unit. The control command information can be generated based on the driving operation information received from 34, or the state display information can be generated based on the state information received from the first control device 17.

  The second monitoring device 12 and the third monitoring device 13 each have substantially the same configuration and function as the first monitoring device 11. That is, the description of the first monitoring device 11 can be replaced with the description of the second monitoring device 12 and the third monitoring device 13 as they are, so that the second monitoring device 12 and the third monitoring device 13 Details are omitted here.

  The first control device 17 of the plant operation monitoring control system 10 generates a plant control signal for controlling the field 21 based on the control command information received from the first monitoring device 11, and the generated plant control signal is input to the field 21. On the other hand, state information is generated based on the plant state signal indicating the state of the plant received from the field 21, and the generated state information is sent to the first monitoring device 11.

  The first control device 17 has a built-in storage unit (not shown in FIG. 1) that stores electronic information, and a control table that can execute a program for controlling the field 21 to be monitored in the storage unit. 39 is stored. The first control device 17 generates a plant control signal based on the control command information received from the supervisory control information transmission / reception unit 35 by executing a program for controlling the field 21 with reference to the control table 39 to generate a field control field. On the other hand, status information can be generated based on the plant status signal received from the field 21 and sent to the first monitoring device 11.

  The second control device 18 and the third control device 19 each have substantially the same configuration and function as the first control device 17. That is, the description of the first control device 17 can be replaced with the description of the second control device 18 and the third control device 19 as they are, so that the second control device 18 and the third control device 19 Details are omitted here.

  Next, operation monitoring control of the plant operation monitoring control system 10 shown in FIG. 1 will be described.

  When performing a driving operation from the first monitoring device 11 to the field 21 that is an operation monitoring control target, an operator who performs the driving operation starts the plant control equipment from the input / output unit 34 of the first monitoring device 11. Perform operations (inputs) such as starting continuous operation. When the input / output unit 34 recognizes an operation input, the input / output unit 34 generates driving operation information corresponding to the input operation. The generated driving operation information is sent from the input / output unit 34 to the monitoring control information transmitting / receiving unit 35. Subsequently, when receiving the driving operation information, the monitoring control information transmitting / receiving unit 35 generates control command information corresponding to the received driving operation information. The generated control command information is transmitted from the monitoring control information transmission / reception unit 35 to the first control unit 17 via the control information network 25.

  When the first control unit 17 receives the control command information from the monitoring control information transmission / reception unit 35 of the first monitoring device 11, the first control unit 17 applies the control command to change the operation state based on the received control command information. However, the validity of whether or not there is a problem such as occurrence of an abnormality in the field 21 is determined, and if it is determined that it is appropriate, a plant control signal corresponding to the control command is generated. The generated plant control signal is sent from the first control unit 17 to the field 21 via the control information network 25.

  On the other hand, when the process information in the field 21 is monitored by the first monitoring device 11, for example, in the field 21 shown in FIG. 1, the device state such as the pump start state and the valve open state in the field 21, Process information such as the liquid level in the storage tank and the pressure in the piping, which varies depending on the equipment, is output from the field 21 as a plant state signal. The first control device 17 receives a plant state signal from the field 21 via the control information network 25.

  Based on the received plant state signal, the first control device 17 performs control determination such as state monitoring based on the response state of the equipment and transition to the next step during continuous operation, and state information corresponding to the plant state signal. Is generated. The generated state information is transmitted to the first monitoring apparatus 11 via the control information network 25.

  When the first monitoring device 11 receives the status information from the first control device 17 by the monitoring control information transmission / reception unit 35, the first monitoring device 11 checks the device status, occurrence of abnormality, etc. based on the status information received by the monitoring control information transmission / reception unit 35. Status display information to be displayed on the input / output unit 34 is generated. The generated status display information is sent from the monitoring control information transmitting / receiving unit 35 to the input / output unit 34. Based on the status display information received from the monitoring control information transmitting / receiving unit 35, the input / output unit 34 displays information such as the device status in the field 21 and the occurrence of an abnormality.

  The operation monitoring control of the plant operation monitoring control system 10 described above is performed as a first operation monitoring control system 10A to a third operation monitoring control system 10C as an example of the operation monitoring control system according to each embodiment described below. It is common in both.

  Next, an outline of the operation screen assignment change process executed by the plant operation monitoring control system 10 shown in FIG.

  The operation screen allocation change processing procedure in the plant operation monitoring control system 10 is a change in the operation monitoring screen allocation required when the monitoring devices 11 to 13 of the plant operation monitoring control system 10 change the operation monitoring control target. The operation screen data of the operation monitoring table 37 stored in the monitoring device that changes the operation monitoring control target is acquired from the operation screen data management device 30 via the network 32, and is changed or updated. To do.

  In the plant operation monitoring control system 10, by executing such an operation screen allocation change processing procedure, the process to be monitored is previously determined for each monitoring device as in the conventional plant operation monitoring control system or the plant operation monitoring control method. The amount of storage and processing data that accompanies the setting increases, or each time the assignment of the operation screen is changed, it is necessary to modify the monitoring devices 11 to 13 by a dedicated device or a work by a professional engineer, which requires a lot of time and effort. The above-mentioned problems can be solved.

  In the plant operation monitoring control system according to the present invention, there are several different embodiments so that several different operation screen assignment change processing procedures can be executed. Then, the operation | movement monitoring control system 10A-10C which concerns on each embodiment of this invention and the operation | movement screen allocation change process procedure performed with the said operation | movement monitoring control system 10A-10C are demonstrated in detail.

[First Embodiment]
FIG. 2 shows the system configuration of the first plant operation monitoring control system 10A, which is an example of the plant operation monitoring control system according to the first embodiment of the present invention, and the operation screen executed by the plant operation monitoring control system 10A. It is explanatory drawing which showed the allocation change process procedure (henceforth "the 1st driving | operation screen allocation change process procedure").

  The first plant operation monitoring control system 10A shown in FIG. 2 has substantially the same basic components as the plant operation monitoring control system 10 shown in FIG. 7, for example, the second control device 18, the third control device 19, the fields 22 and 23, the monitoring control information transmission / reception unit 35, and the control table 39 etc. are partially constructed as shown in FIG. And omitted from the viewpoint of convenience of explanation).

  Also, in the description of each embodiment, the explanation is focused on matters specific to each embodiment, that is, the operation screen assignment change processing procedure according to each embodiment and the components related to the execution of the operation screen assignment change processing procedure. In addition, about the component which is common in each embodiment, the same number as the component corresponding in the plant operation | movement monitoring control system 10 shown by FIG. 1 is attached | subjected, and the description is abbreviate | omitted.

  A first plant operation monitoring control system 10A shown in FIG. 2 includes, for example, three monitoring devices 11A to 13A and an operation screen data management device 30A having all operation screen data displayed by the monitoring devices 11A to 13A. The monitoring apparatuses 11A to 13A and the operation screen data management apparatus 30A are connected via the network 32.

  The first monitoring device 11A of the first plant operation monitoring control system 10A performs an input / output unit 34 that accepts an operation that requests an operation screen assignment change, and an operation that requests an operation screen assignment change accepted by the input / output unit 34. The operation screen allocation change command is generated based on this and transmitted to the operation screen data management device 30A, while the operation screen data after the operation screen allocation change is received from the operation screen data management device 30A, and the current operation screen data is received. An operation screen assignment change update unit 41A that updates or changes the screen data is provided. An operation monitoring table 37 is stored in the storage unit of the first monitoring device 11A. The operation monitoring table 37 is used when the operation screen allocation change update unit 41A executes the first operation screen allocation change processing procedure. Referenced.

  The operation screen data management device 30A, based on the operation screen assignment change command transmitted from the operation screen assignment change update unit 41A of the monitoring devices 11A to 13A, sends the requested operation screen data to the monitoring device 11A that is the transmission source of the operation screen assignment change command. The operation screen data providing unit 45 to be transmitted to 13A is provided. Further, the operation screen data management device 30A has all operation screen data displayed on the monitoring devices 11A to 13A as information accessible by the operation screen data providing unit 45, and includes an operation screen allocation change command, each operation screen data, The operation screen data table 46 associated with the operation screen and the processing steps executed by the operation screen data management device 30A (for example, when the operation screen data of which process is transmitted to which monitoring device) are recorded as the operation history. A history table 47A is stored.

  In the first plant operation monitoring control system 10A, the operation history table 47A stored in the operation screen data management device 30A is not necessarily required information when executing the operation screen allocation change processing procedure of the monitoring devices 11A to 13A. is not.

  Next, the first operation screen assignment change processing procedure executed by the first plant operation monitoring control system 10A will be described.

  In the first operation screen assignment change processing procedure, various kinds of information are exchanged along a route indicated by an arrow in FIG. A user such as an operator inputs an operation screen assignment change request for the monitoring device 11A in order to change the operation screen assignment of one of the monitoring devices (first plant monitoring device 11A in the example shown in FIG. 2). When input is made from the output unit 34, the first operation screen allocation change processing procedure is started. First, the input / output unit 34 generates operation screen allocation change operation information corresponding to the input operation content, and the operation screen allocation change update is performed. Send to part 41A.

  When the operation screen assignment change update unit 41A receives operation screen assignment change operation information from the input / output unit 34, the operation screen assignment change update unit 41A refers to the operation monitoring table 37 and generates an operation screen assignment change command corresponding to the operation screen assignment change operation information. . Then, the operation screen allocation change update unit 41A sends the generated operation screen allocation change command to the operation screen data management device 30A connected to be able to transmit via the network 32.

  In the operation screen data management device 30A, the operation screen data providing unit 45 receives the operation screen allocation change command sent from the operation screen allocation change update unit 41A. When the operation screen data providing unit 45 receives the operation screen allocation change command from the operation screen allocation change update unit 41A, the operation screen data table 46 is referred to and the operation screen data corresponding to the received operation screen allocation change command is acquired. Then, the acquired operation screen data is transmitted to the first monitoring device 11A that is the transmission source of the operation screen allocation change command. At this time, the operation screen data providing unit 45 transmits, as an operation history, the processing step in which the operation screen data corresponding to the received operation screen allocation change command is transmitted to the first monitoring device 11A that is the transmission source of the operation screen allocation change command. Recorded in the operation history table 47A.

  Subsequently, when the operation screen assignment change update unit 41A of the first monitoring device 11A receives operation screen data corresponding to the operation screen assignment change command sent from the operation screen data management device 30A via the network 32, The operation screen data stored in the operation monitoring table 37 is changed or updated to the received operation screen data. Then, the result of changing the operation screen assignment in the first monitoring device 11 </ b> A that is the transmission source of the operation screen assignment change command is output to the input / output unit 34.

  When the result of changing the operation screen assignment is output to the input / output unit 34 of the first monitoring device 11A that is the transmission source of the operation screen assignment change command, the first operation screen assignment change processing procedure is End the step. As described above, the first plant operation monitoring control system 10A executes the first operation screen allocation change processing procedure including the above-described processing steps, thereby the monitoring device that is the transmission source of the operation screen allocation change command (see FIG. In the example shown in FIG. 2, the allocation change of the operation screen of the first monitoring device 11A) can be realized efficiently and easily.

  According to the first plant operation monitoring control system 10A and the first operation screen allocation change processing procedure, the monitoring device 11A is requested by an operator who inputs and requests an operation screen allocation change from the monitoring devices 11A to 13A. The operation screen of an arbitrary process can be assigned to ~ 13A, and the assignment of the operation screen can be changed efficiently and easily as compared with the conventional operation monitoring control system and the operation screen assignment changing method.

  Further, since the operation screen assignment of the monitoring devices 11A to 13A can be changed efficiently and easily as compared with the conventional operation monitoring control system and operation screen assignment changing method, the operator can be efficiently operated while maintaining the operation monitoring function. As a result, the number of operators can be reduced with respect to the conventional operation monitoring control system, and the operation efficiency can be improved.

  Further, even when a request for remodeling the operation screen data of the monitoring devices 11A to 13A occurs, first, the operation screen data table 46 as the operation screen data stored in the operation screen data management device 30A is modified. Then, since necessary operation screen data can be acquired from the operation screen data management device 30A and rewritten in the necessary monitoring devices 11A to 13A, the operation screen data of the monitoring devices 11A to 13A can be efficiently obtained. Can be modified.

  Furthermore, even when the operation screen data stored in the monitoring devices 11A to 13A is destroyed for some reason, the operation screen data required by the operator is acquired from the operation screen data management device 30A, so that a dedicated device or The operation screen data that has been destroyed can be restored without the intervention of a specialist engineer.

  Moreover, since it is only necessary to store the minimum necessary operation screen data in the monitoring devices 11A to 13A, the data capacity in the monitoring device can be minimized and the data processing load increases more than necessary. Can be avoided.

[Second Embodiment]
FIG. 3 shows a system configuration of a second plant operation monitoring control system 10B, which is an example of a plant operation monitoring control system according to the second embodiment of the present invention, and an operation screen executed by the plant operation monitoring control system 10B. It is explanatory drawing which showed the allocation change process procedure (henceforth "the 2nd driving | operation screen allocation change process procedure").

  When the second plant operation monitoring control system 10B shown in FIG. 3 receives an operation screen assignment change request from the monitoring devices 11B to 13B to the first plant operation monitoring control system 10A shown in FIG. And a plant operation monitoring and control system to which a function for determining whether or not to permit the operation screen allocation change is added.

  The second plant operation monitoring control system 10B includes monitoring devices 11B to 13B and an operation screen instead of the monitoring devices 11A to 13A and the operation screen data management device 30A of the first plant operation monitoring control system 10A shown in FIG. Although different from the first plant operation monitoring control system 10A in that the data management device 30B is provided, the other components are not substantially different. Therefore, in the present embodiment, constituent elements that are not substantially different from the first plant operation monitoring control system 10A are assigned the same reference numerals and description thereof is omitted.

  The second plant operation monitoring control system 10B shown in FIG. 3 includes, for example, three monitoring devices 11B to 13B and an operation screen data management device 30B having all operation screen data displayed by the monitoring devices 11B to 13B. The monitoring devices 11B to 13B and the operation screen data management device 30B are connected via the network 32.

  The first monitoring device 11B of the second plant operation monitoring control system 10B changes the operation screen allocation change performed by the operation screen data management device 30B to the functions of the input / output unit 34 and the operation screen allocation change update unit 41A. Driving further added with a function of receiving the determination result of whether to permit from the operation screen data management device 30B and a function of outputting the operation screen assignment change permission determination result received from the operation screen data management device 30B to the input / output unit 34 A screen allocation change update unit 41B. Note that the second monitoring device 12B and the third monitoring device 13B have substantially the same configuration as the first monitoring device 11B, and thus detailed description thereof is omitted.

  The operation screen data management device 30B determines whether or not to permit the operation screen data management device 30A to change the operation screen allocation based on the operation screen allocation change command sent from the monitoring devices 11B to 13B. The operation screen assignment changeability determination unit 51 is further provided, and as the information accessible by the operation screen assignment changeability determination unit 51, the process importance classification information that classifies the process to be the operation monitoring control target according to the safety importance. The process importance level classification table 52 (details are shown in FIG. 4 described later) and the monitoring apparatus 11B to 13B belonging to the second operation monitoring control system 10B receive any operation screen allocation change command. And a monitoring device monitoring target process table 53 (details are shown in FIG. 5 to be described later) having monitoring target process information indicating whether or not is monitored.

  FIG. 4 is an explanatory diagram showing an example of the process importance level classification table 52 referred to by the operation screen assignment change permission determination unit 51 of the operation screen data management device 30B, and FIG. 5 shows the operation screen assignment change of the operation screen data management device 30B. It is explanatory drawing which shows an example of the monitoring apparatus monitoring object process table 53 which the availability determination part 51 refers.

  As shown in FIG. 4, the process importance level classification table 52 has a process name and importance level information associated with each other. Here, the importance level is information obtained by classifying the processes to be the operation monitoring control target of the second plant operation monitoring control system 10B into two, “high” and “low” in descending order of safety importance. It is. The operation screen assignment change possibility determination unit 51 refers to the process importance level classification table 52 shown in FIG. 4 so that the importance of the first process is high, the importance of the second process is low, and the third It can be determined that the importance of the process is high and the importance of the fourth process is low.

  As shown in FIG. 5, the monitoring device monitoring target process table 53 has a monitoring device name and a process (monitoring target process) that is an operation monitoring control target in association with each other. Therefore, the operation screen assignment change permission determination unit 51 refers to the monitoring device monitoring target process table 53 shown in FIG. 5, so that the monitoring target process of the first monitoring device 11B is the first process and the second process. The process is the first and third processes, and the monitoring target process of the second monitoring device 12B is the first process, the fourth process, and the fifth process, and the monitoring target process of the third monitoring apparatus 13B. Can be determined to be the fourth step, the sixth step, and the seventh step.

  Based on the determination result, the operation screen assignment change possibility determination unit 51 determines whether the monitoring devices 11B to 13B monitor and control the importance of the process that is not included in the operation monitoring control target or the process that is excluded from the operation monitoring control target. Considering whether or not the safe operation monitoring control of the plant to be the operation monitoring control target can be maintained, whether or not the allocation change of the operation screen can be determined is determined.

  FIG. 6 is a process flow diagram of an operation screen assignment change permission determination processing procedure executed by the operation screen assignment change permission determination unit 51. The procedure for determining whether or not the operation screen assignment can be changed shown in FIG. 6 is an example in which the first monitoring device 11B shown in FIG. 3 requests a change in the operation screen assignment of the monitoring device 11B. is there.

  When the operation screen assignment change permission determination unit 51 receives the operation screen assignment change instruction from the monitoring devices 11B to 13B, the operation screen assignment change permission determination unit 51 starts (START) execution of the operation screen assignment change permission determination processing procedure (step S1 to step S7). The operation screen assignment change permission / inhibition judgment processing procedure is as follows. First, when the assignment of the operation screen is changed based on the operation screen assignment change command in step S1, the process that is excluded from the operation monitoring control target due to the change is high. It is determined whether or not there is. In step S <b> 1, the operation screen assignment change permission determination unit 51 refers to the process importance level classification table 52 to acquire and determine the importance “high” or “low” of the process that is excluded from the operation monitoring control target.

  If a process that is not subject to operation monitoring control is of high importance (in the case of YES in step S1), a process that is not subject to operation monitoring control in the subsequent step S2 is the transmission source of the operation screen assignment change command. It is determined whether or not the operation control monitoring is performed by the monitoring devices 12B and 13B other than the first monitoring device 11B. In step S2, the operation screen assignment change permission determination unit 51 refers to the monitoring device monitoring target process table 53, and is out of the monitoring target process of the second monitoring device 12B and the monitoring target process of the third monitoring device 13B. It is determined whether or not exists.

  When the monitoring device 12B, 13B is out of the monitoring target processes to be monitored for operation control (in the case of NO in step S2), in the subsequent step S3, the operation screen assignment change permission determination unit 51 It is determined that the allocation change is not permitted, and the operation screen allocation change permission determination processing procedure is terminated (END). This is preferable from the viewpoint of maintaining safe operation monitoring control, assuming that a process that deviates is high in safety, and that the process deviating from other monitoring devices 12B and 13B is not targeted for operation control monitoring. Because there is no.

  On the other hand, when there is a process that is out of the monitoring target processes that are monitored by the monitoring devices 12B and 13B (YES in step S2), the process proceeds to step S4, and the allocation change of the operation screen is requested in step S4. The first monitoring device 11B confirms whether the process can be excluded from the operation control monitoring target. When step S4 is executed, the operation screen allocation change permission determination unit 51 confirms whether the process can be excluded from the operation control monitoring target from the first monitoring device 11B (operation screen allocation change update unit 41B). Information is transmitted, and a message to confirm whether or not to be excluded from the operation control monitoring target is displayed on the input / output unit 34 of the first monitoring device 11B.

  The operator sees a display on the input / output unit 34 confirming whether or not to be excluded from the operation control monitoring target, and inputs to the input / output unit 34 that it may be removed (YES) or should not be removed (NO). be able to. When the input / output unit 34 receives the confirmation result of the operator, the operation information indicating the input confirmation result is transmitted to the operation screen allocation change update unit 41B, and the operation information received by the operation screen allocation change update unit 41B is transmitted. Based on this, an operation command for instructing that it can be removed (YES) or not (NO) is generated and transmitted to the operation screen data management device 30B.

  When the operation screen assignment change possibility determination unit 51 of the operation screen data management device 30B receives the operation command from the first monitoring device 11B, step S5 is executed following step S4. When the operation command received by the operation screen assignment change permission determination unit 51 in step S5 indicates “can be removed” (YES in step S5), the operation screen assignment change permission determination unit 51 continues in step S6. Permits the operation screen assignment change and ends the operation screen assignment change enable / disable determination processing procedure (END).

  If the operation command received by the operation screen assignment change permission determination unit 51 in step S5 indicates "Do not remove" (NO in step S5), the process proceeds to step S3, and the process of step S3 A step is executed. As described above, when the processing step of step S3 is completed, the operation screen assignment change permission determination processing procedure ends (END).

  On the other hand, if the process that is excluded from the operation monitoring control target is “low” in step S1 (NO in step S1), the process proceeds to step S7, and the operation monitoring is performed before and after the change of the operation screen assignment in step S7. It is determined whether or not the process deviating from the control target is monitored by the other monitoring devices 12B and 13B.

  When the other monitoring devices 12B and 13B are monitoring processes that are excluded from the operation monitoring control target before and after the operation screen assignment change (YES in step S7), the process proceeds to step S6, and the processing step of step S6 is performed. Executed. As described above, when the processing step of step S6 is completed, the operation screen assignment change permission determination processing procedure ends (END). On the other hand, when the process that is excluded from the operation monitoring control target before and after the allocation change of the operation screen is not monitored by the other monitoring devices 12B and 13B (NO in step S7), the process proceeds to step S4, and after step S4 The processing steps are executed.

  Next, returning to FIG. 3, the second operation screen assignment change processing procedure executed by the second plant operation monitoring control system 10 </ b> B will be described.

  The second operation screen assignment change processing procedure is a monitoring device (in the example shown in FIG. 3, the first plant monitoring device) in which various information is exchanged along the route indicated by the arrow in FIG. 3 and the operation screen assignment is to be changed. The processing steps from 11B) to sending the operation screen allocation change command to the operation screen data management device 30B connected to be able to be transmitted via the network 32 are the same as the first operation screen allocation change processing procedure.

  Subsequently, in the operation screen data management device 30B, the operation screen assignment change instruction sent from the operation screen assignment change update unit 41B of the first monitoring device 11B is first received by the operation screen assignment change permission determination unit 51, A processing procedure (operation screen assignment change permission determination processing procedure shown in FIG. 6) for determining whether or not to permit the operation screen assignment change command with reference to the process importance classification table 52 and the monitoring device monitoring target process table 53 is as follows. Run.

  Further, the operation screen assignment change availability determination unit 51 performs a history of execution of the operation screen assignment change availability determination processing step (for example, which monitoring device has requested a change in the operation screen assignment of the process, execution of the availability determination processing step). Time, determination result, etc.) are recorded in the operation history table 47B as an operation history. The operation history table 47B stored in the operation screen data management device 30B is not necessarily necessary information when executing the operation screen allocation change processing procedure of the monitoring devices 11B to 13B.

  When the operation screen assignment change enable / disable determination unit 51 permits the operation screen assignment change, the operation screen assignment change instruction is transmitted from the operation screen assignment change enable / disable determination unit 51 to the operation screen data providing unit 45, and the operation screen data providing unit 45 The operation screen data necessary for changing the allocation of the operation screen is acquired and sent to the first monitoring device 11B, and the operation history is recorded in the operation history table 47B. In addition, the operation screen data providing unit 45 reflects the monitoring target process information of the monitoring devices 11 </ b> B to 13 </ b> B after the change of the operation screen allocation to the monitoring device monitoring target process table 53. That is, the monitoring target process information included in the monitoring device monitoring target process table 53 is rewritten to a new state.

  For the processing steps after the first monitoring device 11B receives the operation screen data corresponding to the operation screen assignment change command sent from the operation screen data management device 30B via the network 32, the first operation screen assignment change is performed. The processing steps are the same as the processing steps performed by the operation screen allocation change update unit 41A of the first monitoring device 11A.

  On the other hand, when the operation screen assignment change permission determination unit 51 does not permit the operation screen assignment change, the determination result is first monitored via the network 32 from the screen data management device 30B (operation screen assignment change permission determination unit 51). Sent to device 11B. In the first monitoring device 11B, the operation screen assignment change update unit 41B receives the operation screen assignment change availability determination result, and the operation screen assignment change update unit 41B outputs the sent operation screen assignment change availability determination result to the input / output unit. 34.

  According to the second plant operation monitoring control system 10B and the second operation screen allocation change processing procedure, in addition to the effects of the first plant operation monitoring control system 10A and the first operation screen allocation change processing procedure, monitoring By changing the allocation of the operation screens of the devices 11B to 13B, a process that includes equipment with high safety importance is provided with a limit so that it is monitored by at least one of the monitoring devices 11B to 13B. Can keep the safety monitoring function.

[Third Embodiment]
FIG. 7 shows a system configuration of a third plant operation monitoring control system 10C, which is an example of a plant operation monitoring control system according to the third embodiment of the present invention, and an operation screen executed by the plant operation monitoring control system 10C. It is explanatory drawing which showed the allocation change process procedure (henceforth a "3rd driving | operation screen allocation change process procedure").

  The third plant operation monitoring control system 10C shown in FIG. 7 requests the first plant operation monitoring control system 10A shown in FIG. 2 to change the operation screen assignment from the monitoring devices 11C to 13C. In this case, the plant operation monitoring and control system is provided with a function for determining whether or not to permit the operation screen assignment change operation based on the operation authority of the operator, that is, an operator authentication function.

  The third plant operation monitoring control system 10C shown in FIG. 7 is different from the first plant operation monitoring control system 10A shown in FIG. 2 in place of the monitoring devices 11A to 13A and the operation screen data management device 30A. Although different in that the monitoring devices 11C to 13C and the operation screen data management device 30C are provided, the other components are not substantially different. Therefore, in the present embodiment, constituent elements that are not substantially different from the first plant operation monitoring control system 10A are assigned the same reference numerals and description thereof is omitted.

  A third plant operation monitoring control system 10C shown in FIG. 7 includes, for example, three monitoring devices 11C to 13C and an operation screen data management device 30C having all operation screen data displayed by the monitoring devices 11C to 13C. The monitoring apparatuses 11C to 13C and the operation screen data management apparatus 30C are connected via the network 32.

  The first monitoring device 11C of the third plant operation monitoring control system 10C operates with respect to the functions of the input / output unit 34 having an input function and an output function as a man-machine interface and the operation screen allocation change update unit 41A. And an operation screen allocation change update unit 41C to which a member authentication function is further added.

  The input / output unit 34 has a function of accepting an input operation of information unique to the operator such as a user ID and a password (hereinafter referred to as “operator ID information”) in addition to an operation for requesting an operation screen layout change. And a function of sending information indicating the accepted operation to the operation screen allocation change updating unit 41C and a function of displaying the operator authentication result.

  The operation screen allocation change update unit 41C has a function of receiving the operator ID information transmission request from the operation screen data management device 30C, the operator ID information transmission request, in the function of the operation screen allocation change update unit 41A. A function for sending display information for requesting input of information to the input / output unit 34, operation information indicating operator ID information is received from the input / output unit 34, an authentication request for the operator is generated, and output to the operation screen data management device 30C A function for receiving, from the operation screen data management device 30C, a determination result (operator authentication result) on whether or not the operation screen assignment change operation performed by the operation screen data management device 30C is performed, and operation screen data A function of sending the operator authentication result received from the management device 30C to the input / output unit 34 is further added. Note that the second monitoring device 12C and the third monitoring device 13C have substantially the same configuration as the first monitoring device 11C, and a detailed description thereof will be omitted.

  When the operation screen data management device 30C receives the operation screen assignment change request from the monitoring device, the operation screen data management device 30C requests the monitoring device that is the transmission source of the operation screen assignment change request to change the operation screen assignment. When requesting the transmission of the ID information and receiving the operator ID information transmitted from the monitoring devices 11C to 13C according to the request, the authentication request transmitted from the monitoring devices 11C to 13C to the operation screen data management device 30A. Is further provided with an operation availability determination unit 55 that determines whether or not to permit the operation of the operator who performed the operation to change the allocation of the operation screen, and the operation screen as information that can be accessed by the operation availability determination unit 55 An operation authority information table 56 having operator ID information permitting the assignment change operation is further stored.

  Next, a third operation screen assignment change processing procedure executed by the third plant operation monitoring control system 10C will be described.

  In the third operation screen assignment change processing procedure, various kinds of information are exchanged along the route indicated by the arrow in FIG. 7. First, the input / output unit 34 prior to receiving an input operation for changing the operation screen assignment from the operator. Accepts operator ID information. When the input / output unit 34 receives the operator ID information, the received operator ID information is transmitted to the operation screen data management device 30 </ b> C connected to be able to be transmitted via the network 32.

  Subsequently, when the operation availability determination unit 55 of the operation screen data management device 30C receives the operator ID information, the operation availability determination unit 55 refers to the operation authority information table 56 and attempts to change the operation screen assignment. Whether the operator's unique information matches the operator's unique information that is permitted to change the operation screen assignment, that is, whether the operator is authorized to change the operation screen assignment Determine.

  Then, the operation propriety determination unit 55 records the history of execution of the operation propriety determination processing step (for example, which monitoring device has requested a driver to change the operation screen assignment operation, the execution time of the propriety determination processing step, and the determination Result) is recorded as an operation history in the operation history table 47C. Note that the operation history table 47C stored in the operation screen data management device 30C is not always necessary information when executing the operation screen allocation change processing procedure of the monitoring devices 11C to 13C.

  When it is determined that the operation authority determination unit 55 is given the operation authority to change the operation screen assignment to the operator who wants to perform the operation to change the operation screen assignment, the first monitoring device 11C is operated from the operation availability determination unit 55. Information indicating that the operation change of the operation screen assignment is permitted is sent to (operation screen assignment change update unit 41C), and the operation change of the operation screen assignment is permitted to the input / output unit 34 of the first monitoring device 11C. Is displayed. Thereafter, the procedure is the same as the first operation screen assignment change process described above.

  On the other hand, when the operation propriety determination unit 55 determines that the operation authority for changing the operation screen assignment is not given to the operator who wants to perform the operation for changing the operation screen assignment, the operation permission determination unit 55 performs the first monitoring. Information not permitting operation change of operation screen assignment is sent to device 11C (operation screen assignment change update unit 41C), and operation change of operation screen assignment is permitted to input / output unit 34 of first monitoring device 11C. Not displayed

  According to the third plant operation monitoring control system 10C and the third operation screen assignment change processing procedure, in addition to the effects of the first plant operation monitoring control system 10A and the first operation screen assignment change processing procedure, Only the authorized person can change the assignment of the operation screen. Therefore, the security can be improved as compared with the first plant operation monitoring control system 10A and the first operation screen assignment change processing procedure.

  As described above, according to the plant operation monitoring control system and the operation screen assignment change processing procedure (operation screen assignment change method) according to the present invention, the operator inputs and requests the operation screen assignment change from the monitoring devices 11 to 13. Thus, the operation screens of arbitrary processes can be assigned to the monitoring devices 11 to 13, and the assignment of the operation screens can be changed efficiently and easily as compared with the conventional operation monitoring control system and the operation screen assignment change method.

  In addition, since the operation screen assignment of the monitoring devices 11 to 13 can be changed efficiently and easily compared with the conventional operation monitoring control system and operation screen assignment changing method, the operator can be efficiently operated while maintaining the operation monitoring function. As a result, the number of operators can be reduced with respect to the conventional operation monitoring control system, and the operation efficiency can be improved.

  Further, even when a request for remodeling the operation screen data of the monitoring devices 11 to 13 is generated, the operation screen data table 46 as the operation screen data stored in the operation screen data management device 30 is first modified. Then, since necessary operation screen data can be acquired from the operation screen data management device 30 and rewritten in the necessary monitoring devices 11 to 13 after that, the operation screen data of the monitoring devices 11 to 13 can be efficiently stored. Can be modified.

  Furthermore, even when the operation screen data stored in the monitoring devices 11 to 13 is destroyed for some reason, the operation screen data required by the operator is acquired from the operation screen data management device 30 to obtain a dedicated device or The operation screen data that has been destroyed can be restored without the intervention of a specialist engineer.

  Moreover, since it is only necessary to store the minimum necessary operation screen data in the monitoring devices 11 to 13, the data capacity in the monitoring device can be minimized and the data processing load increases more than necessary. Can be avoided.

  On the other hand, according to the 2nd plant operation monitoring control system 10B and the 2nd operation screen allocation change processing procedure, about the process including equipment with high safety importance in changing the allocation of the operation screen of monitoring devices 11B-13B By limiting the monitoring to be performed by at least one of the monitoring devices 11B to 13B, it is possible to maintain the safety monitoring function of the plant that is the operation monitoring control target.

  In addition, according to the third plant operation monitoring control system 10C and the third operation screen allocation change processing procedure, it is possible to limit the execution of the operation screen allocation change to only those who have been given the operation authority. Compared with the plant operation monitoring control system 10A and the first operation screen assignment change processing procedure, the security can be further improved.

  Note that the present invention is not limited to the above-described embodiments as they are, and may be embodied by modifying constituent elements without departing from the scope of the invention in the implementation stage. In addition, various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the above embodiments. For example, you may delete some components from all the components shown by embodiment. Furthermore, the constituent elements over different embodiments may be appropriately combined.

Schematic which shows the basic composition of the plant operation monitoring control system concerning the embodiment of the present invention. Explanatory drawing which shows the structure of the plant operation monitoring control system which concerns on the 1st Embodiment of this invention, and an operation screen allocation change process sequence. Explanatory drawing which shows the structure of the plant operation | movement monitoring control system which concerns on the 2nd Embodiment of this invention, and an operation screen allocation change process sequence. Explanatory drawing which shows an example of the process importance classification table which an operation screen allocation change possibility determination part refers in the operation screen data management apparatus of the plant operation monitoring control system which concerns on the 2nd Embodiment of this invention. Explanatory drawing which shows an example of the monitoring apparatus monitoring object process table which the operation screen allocation change possibility determination part refers in the operation screen data management apparatus of the plant operation monitoring control system which concerns on the 2nd Embodiment of this invention. The processing flowchart of the operation screen allocation change possibility determination processing procedure performed in the operation screen data management apparatus of the plant operation monitoring control system which concerns on the 2nd Embodiment of this invention. Explanatory drawing which shows the structure of the plant operation monitoring control system which concerns on the 3rd Embodiment of this invention, and an operation screen allocation change process sequence.

Explanation of symbols

10 (10A, 10B, 10C) Operation monitoring control system 11 (11A, 11B, 11C) First monitoring device 12 (12A, 12B, 12C) Second monitoring device 13 (13A, 13B, 13C) Third monitoring Device 17 First control device 18 Second control device 19 Third control device 21 Field 22 Field 23 Field 25 Control information network 30 Operation screen data management device 32 Network 34 Input / output unit 35 Monitoring control information transmission / reception unit 37 Operation monitoring Table 39 Control tables 41A, 41B, 41C Operation screen allocation change update unit 45 Operation screen data provision unit 46 Operation screen tables 47A, 47B, 47C Operation history table 51 Operation screen allocation change enable / disable determination unit 52 Process importance classification table 53 Monitoring device Monitoring target process table 55 Operation availability determination unit 5 6 Operation authority information table

Claims (5)

At least one monitoring device for operating and monitoring the plant;
At least one control device for controlling the plant;
An operation screen data management device that collectively stores all operation screen data that need to be displayed on the monitoring device when performing operation and monitoring of the plant;
The operation screen data management device and each of the monitoring devices can receive an operation screen assignment change command from the monitoring device, and the operation screen data management device can receive the operation screen assignment change command from operation screen data stored in the operation screen data management device. The operation screen data required by each of the monitoring devices is connected to be acquired,
Each of the monitoring devices acquires and stores the operation screen data necessary for display when the self performs the operation and monitoring from the operation screen data management device, and acquires the currently stored operation screen data. Change to the operation screen data acquired every time
When the operation screen data management device receives the process importance classification information that associates the operation monitoring control process with the safety importance, and the operation screen allocation change command, what process each monitoring device performs If the allocation of the operation screen is changed for the first monitoring device based on the monitoring target process information indicating whether or not the monitoring screen is subject to monitoring and the operation screen allocation change command sent from the monitoring device, the operation is performed according to the change. Permits change of assignment when a process that is not subject to monitoring control has a high importance level and the monitoring apparatus other than the first monitoring apparatus does not have a high importance level process that is not subject to operation monitoring control A plant operation monitoring control system, further comprising a determination unit for determining whether or not to change the operation screen assignment. Each of the monitoring devices receives an input requesting an operation screen allocation change; and
Based on the operation received by the input unit, an operation screen assignment change command is generated and sent to the operation screen data management device, and operation screen data after the operation screen assignment change is received from the operation screen data management device, An operation screen assignment change update unit that changes the screen data to the operation screen data received;
An operation unit for displaying an operation screen after the operation screen allocation change based on the operation screen data received from the operation screen data management device by the operation screen allocation change update unit,
The operation screen data management device, based on the operation screen allocation change command transmitted from the operation screen allocation change update unit of the monitoring device, transmits the requested operation screen data to the monitoring device of the operation screen allocation change command transmission source. The plant operation monitoring control system according to claim 1, further comprising a screen data providing unit. The input unit further has a function of accepting an input operation of information unique to an operator such as a user ID and a password, and a function of sending information indicating the accepted operation to the operation screen allocation change update unit,
The operation screen allocation change update unit receives operation information indicating information specific to the operator from the input unit, generates an authentication request for the operator, and outputs the operation request to the operation screen data management device,
A function of receiving an authentication result of the operator performed by the operation screen data management device from the operation screen data management device;
A function of sending the authentication result of the operator received from the operation screen data management device to the output unit;
The output unit further has a function of displaying the authentication result of the operator received from the operation screen allocation change update unit,
When the operation screen data management device receives an operation screen assignment change request from the monitoring device, the operation screen data management device requests an operation change of the operation screen to the monitoring device that is a transmission source of the operation screen assignment change request. When the operator's unique information transmitted from the monitoring device is received according to the request, the received operator's unique information permits the operation screen allocation change to be performed. The plant operation monitoring control system according to claim 2, further comprising an operation availability determination unit that determines whether or not the operation screen assignment change is permitted by determining whether the information matches the information unique to the worker. The plant operation monitoring control system according to claim 1, wherein the operation screen data management device records and stores its own operation history as an operation history. In a plant operation monitoring and control method for performing plant operation and monitoring with at least one monitoring device and controlling the plant with at least one control device,
All the operation screen data that needs to be displayed on the monitoring device when performing operation and monitoring of the plant is collectively stored in the operation screen data management device,
The operation screen data management device receives an operation screen allocation change command from the monitoring device,
The operation screen data necessary for display when each of the monitoring devices performs its own operation and monitoring is acquired and stored from the operation screen data management device, and the currently stored operation screen data is acquired each time. Change to the operation screen data acquired in
When the operation screen data management device receives the process importance classification information that associates the operation monitoring control process with the safety importance, and the operation screen allocation change command, what process each monitoring device performs If the allocation of the operation screen is changed for the first monitoring device based on the monitoring target process information indicating whether or not the monitoring screen is subject to monitoring and the operation screen allocation change command sent from the monitoring device, the operation is performed according to the change. Permits change of assignment when a process that is not subject to monitoring control has a high importance level and the monitoring apparatus other than the first monitoring apparatus does not have a high importance level process that is not subject to operation monitoring control A plant operation monitoring control method characterized by not .

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