JP2002333917A - State display method for controller - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make the set places and housed places of the constituting equipment of a controller set possible to be displayed so as to be distributed at a job site at the time of executing the state monitor of the constituting equipment. SOLUTION: This system is constituted of a maintenance tool 251 and a plurality of controllers (controllers A, B, and C) for controlling plant equipment 210 connected through a network 200, and the CPU A-C constituting each of control devices, input and output processors (PI/O units A-C), and remote input and output devices (RI/O units A-D) constituting the respective controllers are arranged through communication lines 240-242, 246, and 247 at a plurality of set places so as to be distributed. Then, a plurality of cards (I/F, AO, DO, PI/O, FAO, RAI, RDO, RDI) forming the constituting units are housed in a case body, and the set place specifying data and card information data of the constituting units are stored in a storage means arranged in the maintenance tool, and when one of the constituting units is designated, the set place of the constituting unit and the mounting position in the case body of the card in the unit are displayed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for displaying the status of a control device, and more particularly, to a CPU, an input / output processing device, and a remote input / output device constituting the control device, which are distributed and installed in the vicinity of plant equipment and control equipment room. The present invention relates to a technique for displaying a control state at the time of performing.

[0002]

2. Description of the Related Art A conventional status display device of a control device has a function of individually displaying the status of each component of the control device as described below. Part 1. The status of each component of the control device is displayed as a list on a print or on a screen. Part 2. The status of each component device of the control device in which an abnormality has occurred is displayed as a list on a print or on a screen. Part 3. Displays the device configuration of the control device,
The normal and abnormal status of each device is displayed in different colors on the screen.
Part 4. Display the storage status of the control device on the screen,
The state of the device is superimposed on this.

[0003]

In the above prior art 1, if the number of components of the control device is large, the list display becomes enormous, and it takes time and effort to grasp necessary information.
There is a problem that it is difficult to confirm the state. Further, the conventional technology 2 solves the problem of the conventional technology 1, but when maintaining the components of the control device after grasping the state, it is difficult to determine where the devices are and how they are stored. There is a problem that it is difficult to understand. The prior art 3 has a problem that although the state of the device is known, the cause of the abnormality that has occurred in the device cannot be specified. Prior art 4 solves these problems by visually providing the presence and state of the device. However, prior art 4
If the control device is composed of remote input / output devices, distributed arithmetic devices, etc., and this component device is distributed near the plant equipment or in a monitoring / control room or maintenance office, etc. There is a problem that it occurs in the constituent devices, it is not possible to know where the storage rack or the like is stored, and it takes time and effort for maintenance. Also,
Generally, when components of a control device are installed near plant equipment or the like, components of a plurality of control devices are often stored in the same storage rack or the like due to storage racks and the like. Even if the state is checked, the number of constituent devices is large and the installation locations are dispersed, so it is difficult to grasp the storage locations and racks of the connected control devices and other component devices.

SUMMARY OF THE INVENTION In view of the above circumstances, it is an object of the present invention to display the states of the components of a control device and to install the components when monitoring the status of the components of the control device distributed and installed at the site. An object of the present invention is to make it possible to display a place and a storage location.

[0005]

In order to solve the above problems, a maintenance tool having a display means and a storage means provided in a central operation room, and a plurality of control tools for controlling plant equipment connected to the maintenance tool via a network. And a plurality of cards forming the constituent units while distributing the constituent units of the CPU, the input / output processing device, and the remote input / output device constituting the respective control devices at a plurality of installation locations via a communication line. Is stored in the housing, the state display device of the control device to display the operation state of the component unit and the card on the display means, the storage unit storage location identification data and card information data of the component unit,
When one of the constituent units is designated, the installation location of the unit and the mounting position of the card in the unit in the housing are displayed. Here, an image diagram of the mounted state of the constituent unit and the mounted state of the card in the constituent unit is displayed on the display means, and the color of the image diagram of the card is changed according to the operating state of the card. Here, an image diagram of the mounting state of each constituent unit and the mounting state of the card in the constituent unit is displayed on the display means, one of the cards is designated, and the state display of another unit connected to the unit is requested. Then, an image diagram of the mounting state of the other units and the mounting state of the card in the unit is displayed, and at this time, the installation location of the unit and the mounting position in the housing for storing the card are displayed.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a system configuration for implementing a control device status display method according to an embodiment of the present invention.
In a system for controlling a plant, components constituting a control device include a controller (CPU), an input / output processing device PI / O, and an input / output processing device PI / O. These components are a central control room, a control device, and the like. It is distributed and installed in rooms A, B, C, boiler, tank yard and coal storage. In the central control room, a maintenance tool 1 for maintaining the control device and a computer 2 for monitoring the plant are installed, and a controller A installed in the control equipment room A via the control network 14 is installed.
(CPU unit A) 3, controller B (CPU unit B) 4, and controller C (C
PU unit C) 5. The controller A3 for controlling the plant installed in the control equipment room A is connected to the input / output processing device PI / O unit A6 installed in the control equipment room C, and the input / output processing device PI / O unit A6 is connected to the input / output processing device. It is connected to a PI / O unit B7 and a remote input / output unit RI / O unit A9 installed in the tank yard. The remote input / output unit RI / O unit A9 is an input / output processing unit PI / O installed in the control equipment room C. Unit C8 is connected to a remote input / output device RI / O unit B10 installed in the boiler room. Further, the controller B4 is connected to the remote input / output device RI / O unit A9. The remote input / output device RI / O unit B10, the remote input / output device RI / O unit C11 installed in the boiler room, the remote input / output device RI / O unit C11, and the remote input / output device RI / O unit D12 installed in the coal storage facility are provided. Connecting.
In the plant control system including the control devices distributed and installed as described above, the CPU unit (controller A) 3, the CPU unit (controller B) 4, and the CPU unit (controller C) 5, which are constituent units of each control device. , An input / output processing device PI / O unit A6,
PI / unit OB7, PI / O unit C8, remote input / output device RI / O unit A9, RI / O unit B10, RI / O unit C11, RI / O unit D
Reference numeral 12 denotes a maintenance tool 1 which is distributed and installed in a housing (panel).
Are the CPU unit, the input / output processing device PI / O unit, and the remote input / output device R
The installation location of the I / O unit, the status, and the cause of the abnormality are displayed.

FIG. 2 shows an example of the configuration of a control device constituting the system of FIG. The maintenance tool 251 is connected to the controller A, the controller B,
Connected to controller C. Each controller sends information from the plant 210 to the remote analog input device RAI22 in the RI / O unit B221 installed in the boiler room.
5, 226, taken from the remote digital input device RDI 229, 230 in the RI / O unit D253 installed in the coal yard, and each controller operates the RI / O installed in the tank yard near the plant equipment for the plant 210.
Remote analog output device RAO in unit A220
223, 224, RI / O unit C2 installed in boiler room
21 remote digital output devices RDO227, 22
8 outputs information. The controller A installed in the control equipment room A is connected to the I / F card 204 in the PI / O unit A installed in the control equipment room C via the communication line 240 by the I / F card 206 in the CPU unit A. / O
The I / F card 204 in the unit A is further connected to the I / F card 252 in the PI / O unit B via the communication line 241. Card A mounted in PI / O unit A
The I 231, AO 232, DO 233, and PI / O 208 perform information communication with the CPU 237 via the I / F card 204. The PI / O card 208 in the PI / O unit A is
RI / O unit A220 installed in tank yard near plant equipment, RI / O unit B22 installed in boiler room
1. RI / O unit C222, RI / O at coal storage facility
Remote input / output card RAO22 in unit D253
3, RAI 225, RDO 227, and RDI 229 are connected via communication lines 242, 243, 244, and 245, respectively, and perform information communication. Similarly, the controller B installed in the control equipment room A also has the I / F card 2 in the CPU unit 238.
07 connected to the I / F card 205 in the PI / O unit C via the communication line 246, and mounted on the PI / O unit C, the cards AI234, AO235, DO236,
The PI / O 209 is connected to the CPU 2 via the I / F card 205.
38 and communicate with each other. PI / O in PI / O unit C
The card 209 includes an RI / O unit A220 installed in a tank yard near plant equipment and an RI / O installed in a boiler room.
Unit B221, RI / O unit C222, remote I / O card RAO224, RAI226, RDO228, R in 253 in RI / O unit D installed in coal yard
It is connected to the DI 230 via communication lines 247, 248, 249, and 250, respectively, and performs information communication. In the above-described distributed plant control system, the maintenance tool 251 displays the storage positions, states, and causes of abnormalities of the cards in each component unit of each control device that is distributed and installed in the housing (panel). I do. Here, each card in each structural unit is stored in a set position of the housing (panel). On the other hand, the PI / O card 208 in the PI / O unit A
Are the respective RI / O units 220, 221, 222, 25
3 to the communication lines 243, 244, 24
5 and a storage device such as a memory (not shown)
And the CPU 237 stores the information in each RI / O unit 220,
221, 222, and 253 are transmitted. The CPU 237 includes the I / F card 206, the communication line 24,
0, via the I / F card 204, the status information of each card transmitted from each card 204, 231, 232, 233, 208 in the PI / O unit A is received and stored in a storage device such as a memory. In addition, P in PI / O unit C
Similarly, the I / O card 209 is used for each RI / O unit 22.
0, 221, 222, and 253, via the communication lines 247, 243, 244, and 245.
Each RI is stored in a storage device such as a memory, and is stored in the CPU 238.
The status information of the cards in the / O units 224, 226, 228, 230 is transmitted. The CPU 238 communicates via the I / F card 207, the communication line 246, and the I / F card 205,
Each card 205, 234, 23 in the PI / O unit C
The status information of each card transmitted from the 5,236,209 is received and stored in a storage device such as a memory.

[0008] For example, when an abnormality occurs in the RAI 225 in the RI / O unit B 221 installed in the boiler room, the controller A sends the RA to the input / output processing device PI / O 208 to change the RA.
The I225 abnormality is received via the communication lines 242 and 243, stored in a storage device such as a memory, and the RAI225 abnormality information is transmitted to the CPU 237. The CPU 237 sets R
The abnormal information of the AI 225 is transmitted to the I / F card 206 and the communication line 2.
40, the data is received via the I / F card 204 and stored in a storage device such as a memory. Maintenance tools installed in the central control room 2
51, when there is a status display request from the user, the CPU 237 of the controller A via the control network 200.
Reads the status information of each card in each unit that is distributed and installed in each location from, and finds out which card is in which unit in which cabinet (housing), where it is located, and what state it is in Is displayed. Abnormal R
The AI card 225 performs different display, such as displaying a different color from other normal cards.

FIG. 3 shows an example of a registration screen of a card installation (storage) place. In order to specify the installation location of the card, the installation location of the card is input in advance on the following screen. C
On the PU unit setting screen 501, by registering the number 502 of the board into which the CPU unit enters and the unit coordinates 503 for specifying the position of the board on the board, it is possible to determine which board on which board the CPU exists. Set. For the card in the CPU unit, a card type 506 and a card type 507 are input to specify what card is inserted in the slot number 505 of the CPU unit. The number 509 of PI / O units to be connected is set in the interface card 511 for connecting to the PI / O units. PI / O unit is CP
In order to specify which card in the U unit is connected, the slot number 504 of the interface card is designated by an input device such as a mouse. The setting screen 520 of the PI / O unit is displayed by the designation. On the PI / O unit A setting screen 520, the number 521 of the board in which the PI / O unit enters and the unit coordinates 522 are input in order to specify on which board the PI / O unit is located. By setting the card type 524 and the card type 525 for the slot number 523 of the PI / O unit, it is possible to specify what card is in the slot in the PI / O unit. CPU unit button 550
Is a button for moving the screen to the CPU unit setting screen. When there are a plurality of PI / O units to be connected to the interface card 511 of the CPU unit, the next page button 529 is used to indicate the order of the PI / O units connected to the currently displayed PI / O unit and the farthest from the interface card of the CPU unit. A button for displaying the PI / O unit setting screen 520 of the PI / O unit to be connected with the button. The previous page button 528 is a PI / O unit connected to the currently displayed PI / O unit.
A button for displaying a PI / O unit setting screen 520 of a PI / O unit connected in the order close to the PU unit. A screen for setting the information of the RI / O unit connected to the PI / O card 527 of the slot number 0 The slot number 52 for displaying the RI / O unit setting screen 531
6 is designated by an input device such as a mouse. Since the installation locations of the RI / O cards connected to the PI / O card are dispersed for each card, the RI / O unit setting screen 530 assigns a consistent number 533 in the order of connection to the PI / O 527, and For the number 533, the type 534 and the model 535 of the RI / O card are set. By setting the board number 537, unit coordinates 538, and slot number 536 for each RI / O, the location of the RI / O card can be specified. PI / O unit button 539
Is a button for moving the screen to a PI / O unit setting screen to which the RI / O card is connected.

FIG. 4 shows an example of a database of the data set in FIG. The location identification database 1429 includes a name of a controller that owns the card, a board number on which the card is mounted, a unit number in the board, a slot number in the unit,
Store the card type in a database. Further, in order to indicate which card the card is connected to, the unit number in the board on which the upper card to be connected to the card is mounted and the slot number in the unit are stored in a storage device (not shown) of the maintenance tool 251. I do. For example, card type RAO1
The card of (1411) is the board number 1 of the installation location 1412
Slot number 14 in unit coordinates 1414 in 413
15 is implemented. Also, the unit number 1410 of the upper card, the slot number 141 of the upper card
6. RIO indicating the order of units connected to the upper card
By storing the unit number 1417, it is possible to indicate which card is connected to which upper card and in what order. Further, by storing the number 1418 and the slot number 1419 of the unit in which the card in the CPU unit to be connected to the card of the model RAO1 (1411) is connected, the model RAO1 (1411) ) Can be shown. The card information database 1430 stores the card type and card type as information in the storage device of the maintenance tool in order to associate the card type and type. Location specifying database 1429 and card information database 14
The information is taken out from the server 30, and the maintenance tool 251 displays the system information on the screen.

FIG. 5 shows an example of a screen display of the system status display. The display on the screen is the row display unit 401 of the control device,
An in-panel display unit 402 for displaying the unit mounting in the panel, a unit display unit 403 for displaying the card mounting in the unit,
The message display unit 404 displays an error message. Control devices are displayed for each panel in the side panel display section 401. If the number of boards is too large to fit in the display section, the inside of the side panel display section 401 is scrolled by the scroll bar 405, and the panels of all control apparatuses are displayed. Is displayed. Also, the device name 420 to which the row board belongs and the installation location 421 of the row board are displayed. By clicking the board 410 in the row board display unit 401 with a mouse, unit mounting in the board is displayed in the board display unit 402. In addition, a row display unit 401
, A board 41 displayed in the board display 402 to indicate which board is displayed on the board display unit 402
0 is displayed by changing the color. When a state change such as an abnormality occurs in the panel in the side panel display unit 401, the corresponding panels 413 and 414 are displayed in different colors so that the panel having the state change can be recognized. The color at that time is different from the color indicating the display in the board. The in-panel display 402 indicates the unit mounting in the panel, and displays the installation location 422 of the panel and the number 423 of the panel being displayed. In the in-panel display 402, by clicking on the panel with a mouse, by clicking on a unit mounting unit to be displayed, for example, a unit 415 which is a mounting unit of the controller A, the mounting state of the card in the controller A unit 415 is changed. Unit display unit 403
To be displayed. Also, in order to know which unit is displayed on the unit display section 403 at this time, the unit 41
5 is displayed in a different color. When there is a state change such as an abnormality in the unit, the unit is displayed in different colors so that the unit in which the state change has occurred can be recognized. The color at that time is different from the color indicating the unit display. Unit display 4
03 is an example of a CPU unit. The unit display unit 403 indicates mounting of a card mounted in the unit, and displays an installation location 425, a board number 426, and unit coordinates 427 of a board on which the unit is mounted. When card 417 mounted in a unit displayed in unit display 403 is clicked on with a mouse, card (IF) 4
The storage unit (RI /
O) 416 is displayed. If the card connected to the card 417 mounted in the unit displayed in the unit display 403 is in another unit, the card 41
7 is clicked on with a mouse, and PIO unit button 419 is clicked.
By pressing, the mounting state of the card in the unit in which the card to which the card is connected is mounted
03 is displayed. When a unit for mounting the card to be connected to the card 417 is on another panel, for example, the panel 412 and the unit display of the panel 412 is displayed, the panel 412 mounted when displaying the mounting state of the card is displayed. An arrow 418 is displayed so that it is possible to identify which panel unit is being displayed. Also, at this time, the installation location 42 according to the name of the device to which the board indicated by the arrow belongs, and the installation location.
0, the display of the device name 421 is updated.

FIG. 6 shows an example of a screen of the CPU unit.
On the CPU unit screen, the information of the card mounted in the specified unit is extracted from the database and displayed. Based on the information from the database, the location 1606 where the corresponding unit is installed, the board number 1607, the unit coordinates 1608, and the cards 1600, 1601, 1602, 1603 and 1604 mounted in each slot of the corresponding unit.
The name and model of the card are displayed. When the status of the card changes, such as occurrence of an abnormality in the card AI 1602, the color of the slot is changed and displayed, so that the mounting location and the type of the card in which the status change has occurred can be easily understood. Card I / F1
A card 601 is connected to a lower PIO unit and transmits and receives information. By clicking the card I / F 1601 with the mouse and clicking the PIO unit button 1605 with the mouse, the first PIO unit connected to the card I / F 1601 is displayed.

FIG. 7 shows a screen example of the PIO unit.
The PIO unit screen can be specified on the in-panel display, specified on the CPU unit screen, or the PI connected before and after
Displayed by specifying on the O unit screen.
On the PIO unit screen, the information of the card mounted in the PIO unit is extracted from the database and displayed.
Based on information from the database, the location 1710 where the corresponding unit is installed, the board number 1711, and the unit coordinates 17
12. Card 1 mounted in each slot of the unit
700, 1701, 1702, 1703, 1704, 1
The card name and model of 705 are displayed. Card DO17
When a status change such as an abnormality occurs in 02, the slots are displayed in different colors to make it easier to understand the mounting location and the type of the card in which the status change has occurred. Card PIO1703
Is a card to which an RIO unit is connected at the lower level to transmit and receive information. By clicking the card PIO 1703 with the mouse and clicking the RIO unit button 1713 with the mouse, information is extracted from the database, and the first RIO unit connected to the card PIO 1702 is displayed. The CPU unit button 1714 retrieves information from the database by clicking with a mouse, and displays a CPU unit screen to which the displayed PIO unit is connected. The previous page button 1715 retrieves information from the database by clicking with the mouse, and displays the previous PIO unit screen to which the currently displayed PIO unit is connected. Next page button 171
6 is to extract information from the database by clicking with the mouse, and to connect to the displayed PIO unit.
Display the next PIO unit screen.

FIG. 8 shows an example of a screen of the RIO unit.
The RIO unit screen can be specified on the in-panel display, specified on the PIO unit screen, or connected RI before and after.
Displayed by specifying on the O unit screen. R
On the IO unit screen, information on a card mounted in the RIO unit is extracted from the database and displayed. Based on the information from the database, the location 1810 where the corresponding unit is installed, the board number 1811, and the unit coordinates 181
2. Card 18 mounted in each slot of the unit
The card names and models of 00, 1801, 1802, 1803, and 1804 are displayed. When the status of the card changes, such as occurrence of an abnormality in the card RAO 1803, the color of the slot is changed and displayed, so that the mounting location and the type of the card in which the status change has occurred can be easily understood. Card 1800, 1801, 1802, 1803, 1804 in RIO unit
Connects to the card in the PIO unit or
Connect to the card in the O unit. When the connection destination of a certain card being displayed is displayed, for example, the card RAI1802
Is displayed by clicking the card RAI 1802 with the mouse and clicking the next page button 1807 with the mouse to display the connection destination of the card RAI 1802 and to connect the RI after the card RAI 1802.
Display O unit. By clicking the card RAI 1802 with the mouse and clicking the previous page button 1806 with the mouse, the information is extracted from the database, and the RIO unit connected immediately before the card RAI 1802 is displayed. In addition, card RAI18
02 with a mouse, and click the PIO unit button 18
By clicking the 05 button with a mouse, information is extracted from the database, and the PIO unit to which the card RAI 1802 is connected is displayed.

FIG. 9 shows a method for detecting a system state according to the present invention. 9, a control device 301 includes a CPU unit A302 installed in a control equipment room A, a control equipment room C
And a RI / O unit B304 installed in the tank yard.
The CPU unit A302 includes a CPU 305, an I / O
FA card 306 is installed, and PI / O unit A30
3, an I / FB card 307 and a PI / O card 308 are installed, and an RAO card 309 is installed in the RI / O unit A304. I / FA card 3 in CPU unit A302
06 communicates with the I / FB card 307 in the PI / O unit A303. Also, PI / O unit A
The PI / O card 308 in 303 communicates with the RAO card 309 in the RI / O unit A304.
PI / O card 308 in PI / O unit A303
Stores the state of the RAO card 309 in the memory 314. I / FB card 3 in PI / O unit A303
07 is the RA from the memory 314 of the PI / O card 308.
The state of the O card 309 is read, and the state of the RAO is stored in the memory 313. Further, the state of the PI / O 308 is stored in the memory 313. The IF / B card 307 transmits the status of the RAO card 309 and the status of the PI / O card 308 stored in the memory 313 to the I / FA card 306 in the CPU unit 302. CPU unit 3
The I / FA card 306 in 02 stores the received state of the RAO card 309 and the state of the PI / O card 308 in the memory 312. In addition, the I / FA card 306
The state of the / FB card 307 is stored in the memory 312.
The CPU 305 is connected to the memory 312 of the I / FA card 306.
The state of the RAO card 309, the state of the PI / O card 308, and the state of the I / FB card 307 stored in the
10 is stored. Further, the CPU 305 stores the state of the I / FA card 306 in the memory 311. The maintenance tool 251 stores the status of the RAO card 309 stored in the memory 310 in the CPU 305 via the network,
The status of the PI / O card 308, the status of the I / FB card 307, and the status of the I / FA card 306 are read. Also,
The state of the CPU 305 is also read via the network,
The state of the control device 301 is stored in the storage device 321 and displayed.

[0016]

As described above, according to the present invention,
Each component unit of the control device distributed and installed in the status display device, the installation location of the card stored in each component unit, and the storage position can be displayed, so the operator can use the component units,
While visually checking the installation location and storage position of the card, the status of the constituent units and the card can be confirmed, whereby the storage location of the equipment requiring repair can be easily recognized, and the maintainability of the control device can be improved. At the same time, human errors in maintenance can be prevented. In addition, by specifying the configuration unit and the card on the display showing the status of the configuration unit and the card in the control device, the status display of the configuration unit, the other configuration unit connected to the card, and the card is requested. At this time, the installation location and storage position of the component units and card components are displayed on the display device so that they can be distinguished, so that the operator can easily check the status of the control system. can do.

[Brief description of the drawings]

FIG. 1 is a system configuration diagram for implementing a control device status display method according to an embodiment of the present invention;

FIG. 2 is a detailed configuration diagram of a control device of the present invention.

FIG. 3 is an example of a card installation location registration screen of the present invention.

FIG. 4 shows an example of a card information database according to the present invention.

FIG. 5 is an example of a system status display screen of the present invention.

FIG. 6 is an example of a CPU unit screen displayed on the system status display of the present invention.

FIG. 7 is an example of a PIO unit screen displayed on the system status display of the present invention.

FIG. 8 is an example of an RIO unit screen displayed on the system status display of the present invention.

FIG. 9 is an explanatory diagram of a system state detection method according to the present invention.

[Explanation of symbols]

1,251 maintenance tools, 2 computers, 3, 4, 5 controllers A, B, C (CPU units A, B, C),
6, 7, 8 ... I / O processing device (PI / O unit A,
B, C), 9, 10, 11, 12 ... remote input / output devices (RI / O units A, B, C, D), 14, 200 ...
Control network, 210 ... plant, 240, 24
1,242,243,244,245,246,24
7,248,249,250 ... communication line, I / F, AO,
DO, PI / O, RAO, RAI, RDO, RDI ... Card

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Toru Akatsu 5-2-1, Omika-cho, Hitachi City, Ibaraki Prefecture Inside Information Control Systems Division, Hitachi, Ltd. (72) Inventor Katsuhito Shimizu Omika, Hitachi City, Ibaraki Prefecture 5-2-1, Machi, Hitachi, Ltd. Information Systems Division, Hitachi, Ltd. F-term (reference) 5H223 AA01 CC08 DD03 DD07 DD09 EE04 EE29 FF03

Claims (3)

[Claims] 1. A maintenance tool having a display means and a storage means provided in a central operation room, and a plurality of control devices for controlling plant equipment connected to the maintenance tool via a network. CPU to configure,
The constituent units of the input / output processing device and the remote input / output device are distributed and arranged at a plurality of installation locations via a communication line, and a plurality of cards forming the unit are housed in a housing. A status display device of a control device that displays an operation status of the card, wherein the storage unit stores the installation location specifying data and the card information data in the storage unit, and when one of the units is designated, the unit is And displaying a mounting position of the card in the unit and a mounting position of the card in the unit in the housing. 2. The image display device according to claim 1, wherein an image diagram of the mounted state of the unit and a mounted state of a card in the unit are displayed on the display means, and the color of the image diagram of the card is changed according to the operating state of the card. Characteristic display method of control device. 3. The display device according to claim 1, wherein the display means displays an image diagram of a mounting state of each unit and a mounting state of the card in the unit, and designates one of the cards, and When requesting a status display of another unit connected to the unit, an image diagram of the mounting status of the other unit and the mounting status of the card in the unit is displayed, and at this time, the installation location of the unit and the card Displaying a mounting position in a housing for housing the control device.