JP5519458B2 - Plant monitoring control system and display screen management method - Google Patents

Description

  The present invention relates to a plant monitoring control system and a display screen management method, and more particularly to a technique for transferring and displaying a display screen of a human machine device that performs a plant monitoring operation to a human machine device having the same function.

  The human machine device has a function of performing a plant monitoring operation such as a trend graph, and can display a screen for each function. A monitor looks at the displayed screen and performs monitoring and operation.

  In large-scale plant monitoring, it is necessary for multiple supervisors to monitor and operate at various locations, so there are multiple human machine devices, and all human machine devices can monitor the same information. It is necessary that each human machine device can display a screen independently.

  For this reason, a technique has been disclosed in which display content as a result of display / operation on a certain display device can be transferred to another display device and the same display content can be reproduced at the transfer destination (see, for example, Patent Document 1). ).

  In Patent Literature 1, a plant monitoring display system including a plurality of display devices having a multi-window function for simultaneously displaying a plurality of function display screens for monitoring a plant includes a transfer unit and a control unit. The transfer means extracts display content information indicating the display content of the function display screen obtained as a result of being displayed and operated on the first display device among the plurality of display devices, and the extracted display content information is Means for transferring to the second display device. The control means is means for reproducing and displaying the function display screen of the display content indicated by the transferred display content information on the second display device.

JP 2004-280508 A

  In Patent Document 1, the transfer unit needs to extract display content information indicating the display content of the function display screen obtained as a result of being displayed and operated on the first display device among the plurality of display devices. It may take time to extract. In plant monitoring control, when it is desired to display on a plurality of display devices in an emergency, there is a problem that an operation screen operated by a specific monitor cannot be reproduced immediately.

  Further, in a plurality of display devices having a multi-window function, when the screen of each window is a trend graph screen or a system diagram screen, the screen can be reproduced. However, the trend graph is usually configured so that the monitor selects a plurality of trend graphs instead of a single trend graph, and the trend graph displayed by the monitor on the transfer source display device is There is a problem that cannot be reproduced on the destination display device. This will be specifically described with reference to FIG.

  FIG. 13 is an explanatory diagram illustrating an example of a display screen when a screen display of a conventional display device is transferred. FIG. 13A shows an example of a display screen of a transfer source trend graph, and FIG. 13B shows an example of a display screen of a transfer destination trend graph. Both are common as trend graphs. Although the transfer source monitor displayed the trend graph 4 on the fourth page in the previous operation as shown in FIG. 13A, the transfer destination display device displays the trend graph 4 in FIG. ), The first page of the trend graph is displayed, and a page different from the transfer source display device (transfer source PC) is reproduced on the transfer destination display device.

  The present invention is an invention for solving the above-mentioned problem, and when displaying the same screen on a plurality of human machine devices, the screen information displayed on the screen by one human machine device is transferred to another human machine device. It is an object of the present invention to provide a plant monitoring control system and a display screen management method that can be reproduced well and displayed at high speed when transferred.

In order to achieve the above object, a plant monitoring control system of the present invention is a plant monitoring control system for transferring and displaying a display screen of a human machine device that performs a plant monitoring operation to another human machine device having the same function. When each human machine device displays the same screen on the storage unit and a plurality of human machine devices , each human machine device is necessary when transferring screen information displayed on one human machine device to another human machine device. As screen management information that is overall information of screen playback, the identification information of the display section of the display screen, the identification information of the application program, and the screen information displayed in the display section (for example, the number of pages of the trend graph) and managed in association bets, screen management information (e.g., screen management table 51) of the storage unit Rutotomoni, and a screen Division of updating the screen management information according to the display state of the screen, the screen Division, upon receiving an instruction to transfer the display screen to another human-machine device, the storage unit When a transfer file is created from the screen management information corresponding to the current display screen stored and transferred to another human machine device, and when the transfer file is received from another human machine device, The transfer file is reflected in its own screen management information, and its own display screen is updated based on the reflected screen management information.

  According to the present invention, when the same screen display is performed on a plurality of human machine devices, when the screen information displayed on one human machine device is transferred to another human machine device, it can be reproduced well, It can be displayed at high speed.

It is a block diagram which shows a plant monitoring operation system. It is explanatory drawing which shows the processing function of a human machine apparatus. It is explanatory drawing which shows the screen display management table which a screen supervision part produces. It is explanatory drawing which shows the example of a screen management table. It is explanatory drawing which shows transfer of screen management information, and image reproduction in a transfer destination. It is explanatory drawing which shows the process sequence at the time of trend graph selection. It is explanatory drawing which shows the process sequence at the time of the page selection of a trend graph. It is explanatory drawing which shows the process sequence at the time of the page change of a trend graph. It is explanatory drawing which shows the transmission processing procedure of the human machine apparatus of a transfer origin. It is explanatory drawing which shows the reception processing procedure of the human machine apparatus of a transfer destination. It is explanatory drawing which shows the function of the example of a screen of a human machine apparatus. It is a figure which shows the example of a screen of a human machine apparatus. It is explanatory drawing which shows the example of a display screen at the time of transferring the screen display of the conventional display apparatus.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a block diagram showing a plant monitoring operation system. The plant monitoring operation system includes a plurality of human machine devices 100 (100A, 100B, etc.) having the same function, and an information input / output device 200 that is an input / output device from the plant 400. The information input / output device 200 is connected to the plant 400 via the network 300 so as to be communicable with each other. The information input / output device 200 is connected to be able to communicate with each other via the network 310. The human machine device 100 may be referred to as a PC device.

  The human machine apparatus 100A includes a processing unit 40A (40) that performs information control processing, a storage unit 50A (50) that stores data when performing information control processing, an input unit 10A (10) that inputs data, and data Output unit 20A (20), and communication control unit 30A (30) that communicates with information input / output device 200 via network 310.

  The storage unit 50A includes a RAM (Random Access Memory), a HDD (Hard disk drive) device, and the like. The processing unit 40A is realized by executing a program on the RAM or the HDD by one or more CPUs (Central Processing Units). The input unit 10A is a device for inputting an instruction to a computer such as a keyboard and a mouse, and inputs an instruction such as starting a program. The output unit 20A is a display or the like, and displays an execution status and an execution result of the processing by the human machine device 100A. The communication control unit 30A exchanges various data and commands with the information input / output device 200 via the network 310.

  The storage unit 50A includes a screen management table 51A (51) (screen management information) (see FIG. 4), a plurality of screen operation definition files 52A (52), and an image file 53A (one-to-one correspondence with the screen operation definition file). 53).

  The processing unit 40A includes a screen transmission / reception unit 41A (41) that transmits and receives screen management information and events, a screen display unit 42A (42) that displays a screen on the output unit 20A, and a screen control unit 43A that mainly manages screen management information. (43) and a plurality of application units 45A (45) for executing processing in response to a request from the screen supervision unit 43A.

  The human machine device 100B has the same function as the human machine device 100A. The human machine apparatus 100B includes a processing unit 40B that performs information control processing, a storage unit 50B that stores data when performing information control processing, an input unit 10B that inputs data, an output unit 20B that outputs data, and a network The communication control unit 30 </ b> B communicates with the information input / output device 200 via 310. The storage unit 50B includes a screen management table 51B (screen management information) (see FIG. 4), a plurality of screen operation definition files 52B, an image file 53B corresponding to the screen operation definition file one-to-one. The processing unit 40B includes a screen transmission / reception unit 41B, a screen display unit 42B, a screen control unit 43B, and a plurality of application units 45B that execute processing in response to a request from the screen control unit 43B.

  FIG. 2 is an explanatory diagram showing processing functions of the human machine device. When the human machine apparatus 100A (100) clicks the display screen that is the output unit 20 with the mouse that is the input unit 10, the screen display unit 42 notifies the event, and the screen control unit 43 displays the screen according to the content of the event. The operation definition file 52 is analyzed and executed. The application unit 45A issues a processing request (screen drawing, screen update, screen transfer, transfer screen reproduction, etc.) to the screen management unit 43 according to the contents of the event. For example, when the screen management unit 43 receives a drawing request, information necessary for screen reproduction is registered in the screen management table 51, and a processing request is made to the screen display unit 42. The screen display unit 42 outputs the output unit 20. Draw the screen. When the screen drawing is completed, the screen management unit 43 notifies the application unit 45 of the display completion of the screen drawing.

  Further, the screen control unit 43 notifies the application unit 45 of an application (sometimes abbreviated as an application) activation request, an application end request, and the like according to the contents of the event.

  Upon receiving the event notification, the screen management unit 43 refers to the screen operation definition file 52 related to the event notification. The screen operation definition file 52 defines a procedure necessary for processing and a necessary image file 53. The screen operation definition file 52 can be created, modified, deleted, etc. by text jitter via the input unit 10. The image file 53 can be created, modified, deleted, etc. via a drawing tool (GUI (Graphical User Interface)).

  The present embodiment is characterized in that the screen management unit 43 manages the operation contents performed by the monitor by the screen management table 51. The screen management table 51 will be described with reference to FIGS.

  FIG. 3 is an explanatory diagram showing a screen display management table created by the screen management unit. In the present embodiment, a screen display when four functions are executed on a display screen having four sections will be described. In addition, it is not limited to four divisions.

  The screen management unit 43 manages the display section and execution program of the display screen 21 of the human machine device 100 (see FIG. 1) in the screen management table 51, and the application units that are the programs A, B, C, and D. 45 and the screen unit 43 and the application unit 45 are combined through a shared memory for data transfer. Here, this coupling method is referred to as a loose coupling method. In the case of the loosely coupled method, while the data receiver is performing other processing, the hander can continue processing without being in a waiting state, and the responsiveness of the entire system can be improved.

  FIG. 4 is an explanatory diagram illustrating an example of a screen management table. The screen management table 51 includes a display section, a program of an application to be used, a display image on the display screen, an abscissa and ordinate as arrangement positions, a work a,. It is included. The arrangement position is defined as a horizontal coordinate to the right and a vertical coordinate to the bottom with the upper left of the display section as the origin.

  In the screen management table 51 illustrated in FIG. 4, for example, the program “A” is used for the display section “1”, “Picture 1” is included in the display section, and a to z and initial data are included as operations. In the initial data, for example, the currently displayed page number and user input information are stored.

  Returning to FIG. 2, the features of the present embodiment will be described. The screen management table 51 shown in FIG. 4 is an overall table necessary for reproducing a screen. Upon receiving the screen transfer instruction from the supervisor, the screen management unit 43 creates a transfer file (for example, about 3 Kbytes) and transfers the transfer file created to the human machine device 100B that is the transfer destination.

  Upon receiving the transfer file, the transfer destination human machine device 100B reproduces the screen management table 51 in the transfer destination screen management unit 43 and reproduces the screen based on the screen management table 51.

The following effects can be given as effects of the present embodiment.
(1) Since the size of the transfer file is small (about 3 KB (Kbyte)), the time required for screen transfer and reproduction is as fast as an average of 1 second or less.
(2) Since the page number of the screen and user input information are included as initial data, the operation content immediately before the transfer source can be accurately reproduced.

FIG. 5 is an explanatory diagram showing transfer of screen management information and image reproduction at the transfer destination. A display screen 21A is displayed on the output unit 20A of the transfer source human machine apparatus 100A. The display section 1 of the display screen 21A displays page 3 (page number), which is a parameter (also referred to as a parameter), and a user input “Ah” is input by the monitor to request an operation. After that, a case where the supervisor makes a transfer request will be described. When a transfer request is made, a transfer destination list window is launched, and when a transfer destination is clicked, the transfer request is transmitted to the screen control unit 43A. The screen management unit 43A exports the screen management table 51A (screen management information) to the file 55A, and transmits the transmission source IP address, the transmission destination IP address, and the screen management information in association with each other. In addition, a file transfer event is transmitted to the transfer destination human machine device 100B by socket communication.

  When the transfer destination human machine apparatus 100B receives the file transfer event, the screen management unit 43B imports from the file 55B and reproduces the screen management table 51B. The screen management table 51A and the screen management table 51B are the same screen management table. The screen management unit 43B reproduces the screen based on the screen management table 51B. A display screen 21B is displayed on the output unit 20B of the transfer destination human machine device 100B. The display screen 21B can reproduce the display screen of the transfer source including the page number (page No.) and user input information.

  Next, management processing of the screen management table 51 and screen display reproduction processing will be described in detail with reference to FIGS.

  FIG. 6 is an explanatory diagram showing a processing procedure when a trend graph is selected. In FIG. 6, it is assumed that all function menus (see FIG. 11) on the display screen operated by the supervisor are simplified and there are selection menus of trend graph, system diagram, alarm, and transfer. Assume that IDs 1 to 4 are assigned to each selection menu. The ID is a unique value in the screen and is assigned at the time of drawing with the GUI.

  When the monitor selects the trend graph (process S10), the screen display unit 42A transmits a key-in event notification to the screen control unit 43A assuming that “1” (ID = 1) is clicked as the ID (process S11). From the screen management unit 43A, the key-in is decoded (processing S12), and the application unit 45A is instructed to start the program of the trend menu (TrendMenu.exe) with reference to the screen operation definition file 52A of all function menus (processing) S13). When the application unit 45A receives an instruction for starting the program of the trend menu, the application unit 45A instructs the screen management unit 43A to display the “picture 1 (trend menu) display” command defined in the screen operation definition file 52A as the screen display. (Process S14). Upon receiving the “Picture 1 (Trend Menu) Display” command, the screen management unit 43A updates the screen size / position adjustment and the screen management table 51A, and sends the screen display command to the screen display unit 42A. Command "menu) display" (process S15). When the screen display unit 42A receives the screen display command, the screen display unit 42A displays a trend graph menu screen of “picture 1 (trend menu) display” (processing S16). The trend graph menu screen is a selection screen for a plurality of trend graphs (trend graph 1, trend graph 2,...).

  In the screen management table 51A, the program of the trend menu is stored in the display section “1”, “Picture 1” is stored as a display image, and “X” and “Y” are stored as arrangement coordinates.

  FIG. 7 is an explanatory diagram showing a processing procedure when a page of the trend graph is selected. FIG. 7 illustrates a case where the monitor selects the trend graph 3 as the trend graph to be displayed on the trend graph menu screen.

  When the monitor selects the trend graph 3 and issues a request command (process S20), the screen display unit 42A transmits a key-in event notification to the screen control unit 43A when the ID “1” is clicked (process S21). Along with the key-in event notification, “2” is also transmitted as the ID of the group number (group number). The screen management unit 43A decodes the key-in (process S22), refers to the screen operation definition file 52A of the trend menu, and starts the program of the trend graph (TrendGraph.exe) as “TrendGraph, 3”. Command 45A (process S23). When the application unit 45A receives the command for starting the trend graph program, the application unit 45A performs initial parameter analysis and initial display page acquisition (the initial parameter is 3, so the third page is displayed) to acquire the initial display page. Then, the command “picture 2 (trend graph) display, page 3” defined in the screen operation definition file 52A is commanded to the screen control unit 43A (processing S24). Upon receiving the command “Picture 2 (trend graph) display, 3 pages”, the screen management unit 43A updates the screen size / position adjustment and the screen management table 51A, and sends the screen display command to the screen display unit 42A. 2 (trend graph) display, 3 pages "is commanded (processing S25). Upon receiving the screen display command, the screen display unit 42A displays a trend graph screen of “Picture 2 (trend graph) display, 3 pages” (processing S26), and displays it on the application unit 45A via the screen control unit 43A. Completion notification is made (step S27).

  In the screen management table 51A, a trend graph program is stored in the display section “1”, “Picture 2” is stored as a display image, “X” and “Y” are arranged as arrangement coordinates, and “3” is stored as initial data. ing.

  FIG. 8 is an explanatory diagram illustrating a processing procedure when a trend graph page is changed. FIG. 8 illustrates a case where the monitor changes from the trend graph 3 to the trend graph 4 as a trend graph to be displayed (when the item moves forward).

  The screen display unit 42A, when the monitor clicks on the “item advance” button, selects the trend graph 4 and issues a request command (processing S30), when the “1” is clicked as the ID, the screen management unit 43A (Process S31). The key management unit 43A decodes the key-in (process S32), refers to the trend graph screen operation definition file 52A, and instructs the application unit 45A as “term advance” (process S33). Upon receipt of the “term advance” command, the application unit 45A increments the term, edits the display data, updates the screen (display updates on page 4), and commands the screen supervision unit 43A to update the screen (processing S34). Upon receipt of the “display update on page 4” command, the screen management unit 43A updates the screen management table 51A and instructs the screen display unit 42A to update the screen “display update on page 4” (step S35). . Upon receiving the screen update command, the screen display unit 42A updates the screen “update display on page 4” (processing S36) and notifies the application unit 45A via the screen control unit 43A (processing). S37). The application unit 45A registers “4 pages” currently displayed in the initial data and instructs the screen management unit 43A (processing S38). The screen management unit 43A registers the initial data in the screen management table 51A (processing S39).

  In the screen management table 51A, a trend graph program is stored in the display section “1”, “Picture 2” is stored as a display image, “X” and “Y” are arranged as arrangement coordinates, and “4” is stored as initial data. ing.

FIG. 9 is an explanatory diagram showing a transmission processing procedure of the transfer source human machine device. With reference to FIG. 9, a case will be described in which the supervisor gives a transfer command in all function menus on the display screen operated by the supervisor. When the monitor clicks the “transfer” button and issues a request command (process S40), the screen display unit 42A transmits a key-in event notification to the screen control unit 43A when “4” is clicked as the ID (process S41). . The screen management unit 43A decodes the key-in (process S42), and refers to the screen operation definition file 52A of the all function menu to determine “execute transfer process”. The screen control unit 43A executes the following processing.
(1) A transfer file is created from the screen management table 51A (step S43).
(2) The file is transferred to another human machine device (PC device) (processing S44).
(3) A transfer event is notified to other human machine devices (processing S45).

  The transfer file is created in a CSV (Comma Separated Values) format file. For example, the display section “1”, the tray display image “Picture 2”, and the arrangement coordinates registered in the screen management table 51 are displayed. Information such as “X”, “Y”, and “4” of initial data is described.

  FIG. 10 is an explanatory diagram showing a reception processing procedure of the transfer destination human machine device. With reference to FIG. 10, a process when the transfer destination human machine device (transfer destination PC device) receives a transfer event will be described. When receiving the transfer event (process S50), the screen management unit 43B reflects the transfer file in the screen management table 51B, adds the initial data, and starts the program. Specifically, the screen management unit 43B instructs the application unit 45B to start the program of the trend graph (TrendGraph.exe) as “TrendGraph, 4” (processing S51). When the application unit 45 receives the command for starting the trend graph program, it performs initial parameter analysis and initial display page acquisition (the initial parameter is 4, so the fourth page is displayed) to acquire the initial display page. Then, the command “picture 2 (trend graph) display, page 4” defined in the screen operation definition file 52 is commanded to the screen control unit 43B (processing S52). Upon receiving the “Picture 2 (trend graph) display, 3 pages” command, the screen management unit 43B adjusts the screen size and position, updates the screen management table 51B, and sends the screen display command to the screen display unit 42B. “Picture 2 (trend graph) display, page 4” is commanded (step S53). Upon receiving the screen display command, the screen display unit 42B displays a trend graph screen of “Picture 2 (trend graph) display, page 4” (processing S54) and displays it on the application unit 45B via the screen control unit 43B. Completion notification is sent (process S55).

  In this embodiment, since the size of the transfer file is small (about 3 Kbytes), the time required for screen transfer and reproduction is as fast as an average of 1 second or less. Further, since the page number of the screen and user input information are also included as initial data, the operation content immediately before the transfer source can be accurately reproduced.

Next, functions of the display screen 21 will be described.
FIG. 11 is an explanatory diagram illustrating functions of a screen example of the human machine device. The display screen 21 includes a system area 22, a display area 23, and a soft key area 24. The system area 22 has display and operation functions related to the entire system. For example, an alarm display button, a generator output display, and the current time are displayed. The display area 23 displays various functions and a window 25. For example, an alarm screen, a trend graph, a plant schematic, etc. are displayed. The soft key area 24 has a function related to screen development of the display area 23. For example, function buttons such as a trend graph, a screen replacement button, and a return button are displayed. The window 25 displays a small window-shaped picture or the like on the foreground on the screen. The window 25 displays urgent data (for example, a serious failure occurrence), a menu for screen display, and a function (for example, a virtual keyboard) for the purpose of assisting or supporting the human machine device 100.

  A method for displaying an alarm screen on the display section D and a trend graph on the display section A will be described as to how the supervisor operates. First, the monitor operates the mouse to select the display section D (section D) of the display area 23. In this state, an alarm display button in the system area 22 is selected. Then, an alarm screen is displayed in the section D of the display area 23.

  Next, the monitor selects the display section A (section A) of the display area 23 by operating the mouse. In this state, a function menu display button (not shown) in the soft key area 24 is selected. Then, a screen display menu is displayed in the window 25. Next, the trend graph function display button displayed in the window 25 is selected. As a result, a trend graph is displayed in the section A.

  FIG. 12 is a diagram illustrating a screen example of the human machine device. Refer to FIG. 11 as appropriate. In the system area 22, an “alarm” button for displaying an alarm list screen, an “automation” button for displaying a sub-window screen of an automation menu, a “generator output” display field, and a display of “main steam pressure” A field, a “print permission” button, an “operation permission” button, a current time display field, a “hard copy” button for giving a hard copy command to the hard copy apparatus, and the like are displayed. In the display area 23, for example, a trend graph, a system diagram, an event log, and an alarm item are displayed.

  In the soft key area 24, an arbitrary 2 selected in the case of a “full screen 4-split” button, a “spot display” button, and a 4-split screen for switching and displaying the full screen / 4-split screen in the display area 23. "Screen change" button for changing the screen of the display section, "Virtual keyboard" button, "4-screen redisplay" button for selecting a group arbitrarily from the combinations registered in "4-screen registration", 4-split "4-screen registration" button for memorizing the combination of four screens by key selection during screen display, "screen re-display" button for re-displaying the screen by information temporarily saved by "screen memory", current display Select the “Screen Memory” button to temporarily save the screen information (display screen, display group number, etc.) for one screen, and the screen that has been displayed in the active area in the past. By selecting the “Return History” button and “Return History” button to return to the past direction, and “Display History” button to display the screen in the current direction when returning to the past direction and displaying the screen. ”Button, when the function being displayed in the active area has a hierarchical screen configuration, the“ upper screen ”button for displaying the screen one level higher, and when the function being displayed in the active area has a page structure "Backward" button for selecting backward, "Page forward" button for selecting page forward when the function being displayed in the active area has a page structure, for clearing all displayed windows “Reset window” button, “Input / output point dictionary” button to display the item selection sub-window for searching and displaying input / output points Down, and, "all the functions menu" button to display all the features menu to be used to invoke various functions are displayed.

  In summary, the present embodiment is a plant monitoring and control system that transfers and displays a display screen of a human machine device that performs a plant monitoring operation to another human machine device having the same function, and each human machine device 100 displays a display. A storage unit 50 storing a screen management table 51 (screen management information) for managing the screen display section identification information, the application program identification information, and the screen information displayed in the display section in association with each other. And a screen management unit 43 that updates the screen management information according to the display state of the screen. When the screen management unit 43 receives an instruction to transfer the display screen to another human machine device, the storage unit 43 50 creates a transfer file from the screen management information corresponding to the current display screen stored in 50, and transfers it to other humans at the transfer destination. When transferring to a thin device and receiving a transfer file from another human machine device, the transfer file is reflected in its own screen management information, and its display screen is updated based on the reflected screen management information. be able to.

  Each human machine device 100 further generates a screen display unit 42 that generates event identification information based on an input operation from the input unit 10 and transmits the event identification information to the screen control unit 43, and accepts a program processing request from the screen control unit 43. Then, the application unit 45 is generated to start the corresponding program, generate screen display information with parameters based on the processing request, and make a screen display display request to the screen control unit 43, and the storage unit 50 further includes an event The screen operation definition file 52 in which the identification information and the program activated by the event information are associated is stored, and when the screen management unit 43 receives the event identification information from the screen display unit 42, the screen operation definition Refer to the file 52, analyze which program to start, and the program corresponding to the analysis result When a processing request is made to the application unit 45 to be activated, and a screen display display request based on the screen display information generated from the application unit 45 that has activated the program based on the processing request is received, the screen management information is based on the display request. And the screen display unit 42 can be instructed to display a screen.

  According to the present embodiment, when the same screen display is performed on a plurality of human machine devices, when the screen information displayed on one human machine device is transferred to another human machine device, it can be reproduced well. Because the transfer file is small, transfer time and reproduction time are short, and it can be transferred and displayed at high speed.

DESCRIPTION OF SYMBOLS 10 Input part 20 Output part 21 Display screen 30 Communication control part 40 Processing part 41 Screen transmission / reception part 42 Screen display part 43 Screen control part 45 Application part 50 Storage part 51 Screen management table (screen management information)
52 Screen operation definition file 53 Image file 100 Human machine device 200 Information input / output device 300, 310 Network 400 Plant

Claims (6)

A plant monitoring control system for transferring and displaying a display screen of a human machine device that performs a plant monitoring operation to another human machine device having the same function,
Each human machine device
A storage unit;
When performing the same screen display on multiple human machine devices, the display screen is used as screen management information for screen playback that is required when screen information displayed on one human machine device is transferred to another human machine device. The display section identification information, the application program identification information, and the screen information displayed in the display section are managed in association with each other , the screen management information is stored in the storage unit, and the screen display state And a screen management unit that updates the screen management information according to
The screen management department
When receiving an instruction to transfer the display screen to another human machine device, a transfer file is created from the screen management information corresponding to the current display screen stored in the storage unit, and the other destination Transfer to human machine equipment,
When the transfer file is received from another human machine device, the transfer file is reflected in the own screen management information, and the display screen is updated based on the reflected screen management information. And plant monitoring control system. Each human machine device further includes:
A screen display unit that generates event identification information based on an input operation from the input unit and transmits the event identification information to the screen control unit;
When receiving a processing request for a program from the screen control unit, the corresponding program is started to generate screen display information with parameters based on the processing request, and an application unit that makes a screen display display request to the screen control unit. Prepared,
The storage unit further includes
A screen operation definition file in which the event identification information and a program activated by the event information are associated is stored,
The screen management department
When the event identification information is received from the screen display unit, the screen operation definition file is referenced to analyze which program is to be started, and the application unit that starts the program corresponding to the result of the analysis is subjected to the processing. Make a request
When receiving a display request for screen display based on the generated screen display information from an application unit that has started a program based on the processing request, the screen display unit updates the screen management information based on the display request. The plant monitoring control system according to claim 1, wherein a screen display is instructed. When the event identification information is a trend menu activation,
The application unit requests the screen management unit to display a trend graph menu that is a menu of a trend graph included in the trend menu,
The screen management unit, upon receiving a display request for the trend graph menu from the application unit, registers the trend menu as a program in association with the display section requested in the screen management information,
When the next event identification information is a trend graph display on a predetermined page ,
The application unit requests the screen management unit to display a trend graph of the predetermined page,
When the screen management unit receives a request to display the trend graph of the predetermined page from the application unit, the screen management unit registers the predetermined page as initial data in association with the display section requested in the screen management information. The plant monitoring control system according to claim 2. The plant monitoring control system according to claim 1, wherein each of the human machine devices is a plant monitoring display device having a four-screen display. The plant monitoring control system according to claim 1, wherein the transfer file is a CSV (Comma Separated Values) format file based on the screen management information. In a display screen management method for transferring and displaying a display screen of a human machine device that performs a plant monitoring operation to another human machine device having the same function,
When each human machine device performs the same screen display on a storage unit and a plurality of human machine devices, each human machine device is required when transferring screen information displayed on one human machine device to another human machine device. as screen management information is centralized information screen playback, and managed in association with identification information of the display section of the display screen, the identification information of the application program, and a screen information displayed on the display section, wherein the screen management A storage unit that stores information in the storage unit and updates the screen management information according to a display state of the screen;
The screen management department
Table示画surface when receiving an instruction to transfer to other human-machine device, other destination by creating a transfer file from the screen management information corresponding to the current display screen stored in the storage unit Transfer to human machine equipment
When the transfer file is received from another human machine device, the transfer file is reflected in the own screen management information, and the display screen is updated based on the reflected screen management information. Display screen management method.

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