WO2016139805A1

WO2016139805A1 - Programmable logic controller engineering tool and programmable logic controller engineering tool program

Info

Publication number: WO2016139805A1
Application number: PCT/JP2015/056542
Authority: WO
Inventors: 秀章岩田
Original assignee: 三菱電機株式会社
Priority date: 2015-03-05
Filing date: 2015-03-05
Publication date: 2016-09-09
Also published as: JPWO2016139805A1

Abstract

A programmable logic controller engineering tool (2), having: a communication unit (204) for searching for a programmable logic controller in a programmable logic controller system, and acquiring, from the programmable logic controller found in the search, information representing an affiliated network; a display control unit (201) for generating, on the basis of the information acquired by the communication unit (204), a system configuration diagram showing the network configuration of the programmable logic controller system; and a data holding unit (203) for generating list information for the programmable logic controllers included in the system configuration diagram and holding the list information and the information acquired by the communication unit (204). The display control unit (201) generates, at the time at which the system configuration diagram is updated, a system configuration diagram displaying the difference with the previously generated system configuration diagram on the basis of the list information and the information acquired by the communication unit (204) and held by the data holding unit (203).

Description

Programmable logic controller engineering tool and programmable logic controller engineering tool program

The present invention relates to a programmable logic controller engineering tool and a programmable logic controller engineering tool program for monitoring and diagnosing a factory automation system composed of factory automation equipment including a programmable logic controller.

In the factory automation system, the configuration of devices and networks is becoming more complex year by year. In a large-scale factory automation system, multiple programmable logic controllers are used, and the programmable logic controllers are connected by a multi-level network. It became so.

Conventionally, in the system as described above, when acquiring and displaying configuration information or operation information of a connected programmable logic controller, as disclosed in Patent Document 1, a programmable logic controller engineering tool program is installed in the same network. By connecting a programmable logic controller engineering tool, which is an information processing apparatus, the configuration information of the programmable logic controller and its operation state have been acquired.

In addition, when acquiring and displaying the configuration information or operation state of a programmable logic controller on a network different from the network to which the information processing apparatus is connected, the management programmable logic connected to the information processing apparatus or another network Based on the network configuration and programmable logic controller configuration held in the controller, the programmable logic controller to be displayed is specified, and the connection information is used to connect the information processing device to the programmable logic controller, and monitor the operation state I needed to make a diagnosis.

JP-A-9-212213

However, in the above conventional method, when there is a change such as addition or deletion to the programmable logic controller connected to the network during connection, the display on the information processing device side cannot follow, and the newly connected programmable logic controller There is a problem that a programmable logic controller that cannot acquire the operating state of the computer or cannot be acquired because of being away from the network continues to be displayed.

This invention is made in view of the above, Comprising: Obtaining the programmable logic controller engineering tool which can follow a display, even when there is a change of addition or deletion to the programmable logic controller connected to the network Objective.

In order to solve the above-described problems and achieve the object, the present invention searches for a programmable logic controller in a programmable logic controller system including a programmable logic controller connected to a network, and from the programmable logic controller found by the search. Based on the information acquired by the communication unit, which is the network to which the programmable logic controller found by the search belongs, and the system configuration diagram showing the network configuration of the programmable logic controller system is generated based on the information acquired by the communication unit A display control unit, and a data holding unit that generates list information of the programmable logic controller included in the system configuration diagram and holds the list information and information acquired by the communication unit; When the system configuration diagram is updated, the display control unit displays a difference between the system configuration diagram created last time based on the information acquired by the communication unit and stored in the data holding unit and the list information. It is characterized by generating.

The programmable logic controller engineering tool according to the present invention has an effect that display can be tracked even when there is a change such as addition or deletion to the programmable logic controller connected to the network.

The figure which shows the structure of the programmable logic controller engineering tool concerning embodiment of this invention The figure which shows the hardware constitutions of the information processing apparatus applied to the programmable logic controller engineering tool concerning embodiment The figure which shows the structure of the programmable logic controller system to which the programmable logic controller engineering tool concerning embodiment is applied The figure which shows an example of the system block diagram which the display control part of the programmable logic controller engineering tool concerning embodiment displays on a display apparatus The flowchart which shows the outline | summary of operation | movement of the programmable logic controller engineering tool concerning embodiment The figure which shows an example of the table which the data holding part of the programmable logic controller engineering tool concerning embodiment hold | maintains The figure which shows an example of the in-display apparatus information which the data holding part of the programmable logic controller engineering tool concerning embodiment hold | maintains The flowchart which shows the flow of the table update operation | movement of the programmable logic controller engineering tool concerning embodiment State transition diagram of display state update of programmable logic controller by display control unit of programmable logic controller engineering tool according to embodiment State transition diagram of network display state update by display control unit of programmable logic controller engineering tool according to embodiment The flowchart which shows the flow of the operation | movement which displays the connection line between the programmable logic controller and network by the programmable logic controller engineering tool concerning embodiment An example of a detailed information display screen displayed on the display device when a programmable logic controller that is normally or additionally expressed on the system configuration diagram displayed on the display device by the programmable logic controller engineering tool according to the embodiment is selected Figure showing

Hereinafter, a programmable logic controller engineering tool and a programmable logic controller engineering tool program according to an embodiment of the present invention will be described in detail based on the drawings. Note that the present invention is not limited to the embodiments.

Embodiment.
FIG. 1 is a diagram showing a configuration of a programmable logic controller engineering tool according to an embodiment of the present invention. The programmable logic controller engineering tool 2 is used for monitoring an operation state and configuration information of the programmable logic controller and editing a program of the programmable logic controller. The programmable logic controller engineering tool 2 is realized by an information processing apparatus installed with a programmable logic controller engineering tool program executing the programmable logic controller engineering tool program. The programmable logic controller engineering tool 2 generates a system configuration diagram of an applied programmable logic controller system, displays a system configuration diagram and an operation state of the programmable logic controller, and a programmable program being displayed in the system configuration diagram A display device information 205 indicating a logic controller is generated, a data holding unit 203 that holds the table 202 created based on information acquired from the programmable logic controller and the displayed device information 205, and a programmable logic connected to the network Programmable logic controller in the programmable logic controller system that includes the controller From and a communication unit 204 for obtaining information on parent network is a network of programmable logic controller belongs Search found.

FIG. 2 is a diagram illustrating a hardware configuration of an information processing apparatus applied to the programmable logic controller engineering tool according to the embodiment. The information processing apparatus 1 includes an arithmetic device 101 that executes a programmable logic controller engineering tool program, a memory 102 that the arithmetic device 101 uses as a work area, an input device 103 that receives an input operation of a user, and a display device 104 that displays information. And a communication device 105 for communication with the programmable logic controller, and a storage device 106 for storing the programmable logic controller engineering tool program 100. A general-purpose computer terminal can be applied to the information processing apparatus 1.

The information processing apparatus 1 is the programmable logic controller engineering tool 2 when the arithmetic unit 101 executes the programmable logic controller engineering tool program 107 using the memory 102 as a work area. That is, the display control unit 201, the data holding unit 203, and the communication unit 204 illustrated in FIG. 1 are realized when the arithmetic device 101 executes the programmable logic controller engineering tool program 107. A plurality of arithmetic devices and a plurality of memories may cooperate to execute the above function.

FIG. 3 is a diagram illustrating a configuration of a programmable logic controller system to which the programmable logic controller engineering tool according to the embodiment is applied. The programmable logic controller engineering tool 2 in the programmable logic controller system 3 is connected to a network 21. A programmable logic controller 11, a programmable logic controller 12, and a programmable logic controller 13 are connected to the network 21.

The programmable logic controller 13 is also connected to the network 23. Therefore, the network 21 and the network 23 are connected via the programmable logic controller 13. A programmable logic controller 15 and a programmable logic controller 16 are connected to the network 23.

The programmable logic controller 16 is also connected to the network 24. Therefore, the network 23 and the network 24 are connected via the programmable logic controller 16. A programmable logic controller 17 is connected to the network 24.

Each of the

programmable logic controllers

11, 12, 13, 15, 16, and 17 holds an address for identifying the programmable logic controller itself, a programmable logic controller name, and an operation state.

The programmable logic controller 11 has a programmable logic controller name “PLC1”, the programmable logic controller 12 has a programmable logic controller name “PLC2”, and the programmable logic controller 13 has The programmable logic controller name “PLC3” is set, the programmable logic controller 15 is set with the programmable logic controller name “PLC5”, and the programmable logic controller 16 is set with the programmable logic controller “PLC6”. The programmable logic controller 17 has a programmable logic name “PLC7”. Click the controller name is set.

The network 21 is set with a network name “Network 1”, the network 23 is set with a network name “Network 3”, and the network 24 is set with a network name “Network 4”. Is set.

Here, it is assumed that the programmable logic controller 13 in the programmable logic controller system 3 is not currently connected but is also connected to the network 22 before, and the programmable logic controller 14 is connected to the network 22. . In FIG. 3, the network 22 and the programmable logic controller 14, which are currently separated from the programmable logic controller system 3 but were previously included in the programmable logic controller system 3, are shown by broken lines. It is assumed that a programmable logic controller name “PLC4” is set in the programmable logic controller 14 and a network name “network 2” is set in the network 22.

Further, it is assumed that the

networks

23 and 24 and the

programmable logic controllers

15, 16 and 17 are added to the programmable logic controller system 3 later.

FIG. 4 is a diagram illustrating an example of a system configuration diagram displayed on the display device by the display control unit of the programmable logic controller engineering tool according to the embodiment. The system configuration diagram displayed on the display device 104 by the display control unit 201 in FIG. 1 is the

programmable logic controller

11, 12, 13, 14, 15, 16, 17 and the

networks

21, 22, 23, 24 connected to each other.

Connection lines

31, 32, 33, 34, 35, 36, 37, 38, 39, and 40 to be displayed are to be displayed.

The connection line 31 connects the programmable logic controller 11 and the network 21. The connection line 32 connects the programmable logic controller 12 and the network 21. The connection line 33 connects the programmable logic controller 13 and the network 21. The connection line 34 connects the programmable logic controller 13 and the network 22. The connection line 35 connects the programmable logic controller 14 and the network 22. The connection line 36 connects the programmable logic controller 13 and the network 23. The connection line 37 connects the programmable logic controller 15 and the network 23. The connection line 38 connects the programmable logic controller 16 and the network 23. The connection line 39 connects the programmable logic controller 16 and the network 24. The connection line 40 connects the programmable logic controller 17 and the network 24.

On the system configuration diagram, the

programmable logic controllers

11, 12, 13, 14, 15, 16, and 17 are expressed using square images. On the system configuration screen, the

networks

21, 22, 23, and 24 are expressed using elliptical images. In the system configuration diagram, the

connection lines

31, 32, 33, 34, 35, 36, 37, 38, 39, and 40 are expressed using straight lines.

In the system configuration diagram, if there is no change from the system configuration diagram displayed last time, it is expressed in normal expression using a solid line, and what is added from the system configuration diagram displayed last time is added using a double line What is expressed by expression and deleted from the system configuration diagram displayed last time is expressed by deletion expression using a broken line. Therefore, the

programmable logic controllers

11, 12, 13, the network 21, and the connection lines 31, 32, 33 are expressed in a normal expression, and the programmable logic controller 14, the network 22, and the connection lines 34, 35 are represented. The

programmable logic controllers

15, 16, and 17, the

networks

23 and 24, and the connection lines 36, 37, 38, 39, and 40 are represented by additional expressions.

Note that the

programmable logic controllers

11, 12, 13, 15, 16, and 17 that are normally expressed or additionally expressed are in a different color from the normal state so that the abnormal state can be recognized in the abnormal state. Display as a square image. In FIG. 4, since the programmable logic controller 13 is displayed as a square image having a color different from the normal state, it can be easily identified that the programmable logic controller 13 is in an abnormal state.

FIG. 5 is a flowchart showing an outline of the operation of the programmable logic controller engineering tool according to the embodiment. In step S <b> 101, the communication unit 204 searches for a programmable logic controller included in the programmable logic controller system 3 through the network 21. The communication unit 204 also searches for a programmable logic controller for a network that is indirectly connected via the programmable logic controller 13 in the programmable logic controller system 3. In step S102, the data holding unit 203 updates the table 202 according to the search result. In step S103, the display control unit 201 updates the display screen according to the update state of the table 202, and the data holding unit 203 updates the displayed device information 205.

In step S104, the display control unit 201 confirms whether the programmable logic controller is selected by the user on the system configuration diagram. If the programmable logic controller is selected by the user on the system configuration diagram, the result in Step S104 is Yes, and the process proceeds to Step S105. If the programmable logic controller has not been selected by the user on the system configuration diagram, the result in step S104 is No, and the process ends.

In step S105, the display control unit 201 confirms whether or not the programmable logic controller selected by the user on the system configuration diagram is registered in the table 202. If the programmable logic controller selected by the user on the system configuration diagram is registered in the table 202, the result of step S105 is Yes, and the display control unit 201 selects the programmable logic controller selected in step S106. Display detailed information. If the programmable logic controller selected by the user on the system configuration diagram is not registered in the table 202, No in step S105, the display control unit 201 displays an error in step S107.

FIG. 6 is a diagram illustrating an example of a table held by the data holding unit of the programmable logic controller engineering tool according to the embodiment. The table 202 held by the data holding unit 203 includes a “programmable logic controller name” 61, a “network address” 62, and a “network name to which the table belongs” in each of the

records

71, 72, 73, 75, 76, 77 for each programmable logic controller. "63", "status" 64, and "via programmable logic controller name" 65 are stored.

"Programmable logic controller name" 61, "network address" 62, "belonging network name" 63, and "state" 64 are information unique to the programmable logic controller, and the programmable logic controller found by the search by the communication unit 204 is programmable. This information is returned to the logic controller engineering tool 2. When the programmable logic controller 11 is found in the programmable logic controller system 3 shown in FIG. 3, the “programmable logic controller name” that the programmable logic controller 11 returns to the programmable logic controller engineering tool 2 is “PLC1”. The “network address” that 11 returns to the programmable logic controller engineering tool 2 is “10.1.1.1”, the “status” that the programmable logic controller 11 returns to the programmable logic controller engineering tool 2 is “normal”, Programmable logic controller 11 is programmable logic controller engineering "Network name belongs" to return to Lumpur 2 is a "network 1".

“Via programmable logic controller name” 65 is information added by the programmable logic controller via when the programmable logic controller connected to a plurality of networks is in the programmable logic controller system 3. In the programmable logic controller system 3 shown in FIG. 3, when the programmable logic controller 15 is found by searching the communication unit 204, the “programmable logic controller name passed through” that the programmable logic controller 15 returns to the programmable logic controller engineering tool 2 is “PLC3”.

FIG. 7 is a diagram illustrating an example of displayed device information held by the data holding unit of the programmable logic controller engineering tool according to the embodiment. The displayed device information 205 is list information of programmable logic controllers included in the system configuration diagram, and the programmable logic controller that the display control unit 201 displays in the system configuration diagram in any of normal expression, additional expression, or deletion expression The programmable logic controller name and the expression method are included.

FIG. 8 is a flowchart showing a table update operation flow of the programmable logic controller engineering tool according to the embodiment. In step S <b> 201, the communication unit 204 searches for a programmable logic controller included in the programmable logic controller system 3. The process of searching for a programmable logic controller is executed according to a known communication method that polls the entire programmable logic controller connected to the programmable logic controller engineering tool 2 or uses a token ring. The communication unit 204 searches all the connected programmable logic controllers for the same network 21 as the network to which the programmable logic controller engineering tool 2 is connected. When the programmable logic controller is found, the found programmable logic controller returns “programmable logic controller name”, “network address”, “network name to which it belongs”, and “state”.

When the found programmable logic controller is connected to another network, the programmable logic controller engineering tool 2 searches the other network via the found programmable logic controller. Specifically, in the programmable logic controller system 3 shown in FIG. 3, when the programmable logic controller 13 connected to the network 21 and the network 23 is found, the programmable logic controller engineering tool 2 passes through the programmable logic controller 13. Then, the programmable logic controller on the network 23 is searched.

When a programmable logic controller is found in a network different from the network to which the programmable logic controller engineering tool 2 is connected, the programmable logic controller engineering tool 2 is connected to the programmable logic controller found on another network. Information equivalent to the information returned by the programmable logic controller found on the connected network is returned to the programmable logic controller engineering tool 2. The relayed programmable logic controller adds “routed programmable logic controller name” when relaying information returned to the information processing apparatus 1 by the programmable logic controller found in another network.

When the programmable logic controller 15 is found in the programmable logic controller system 3 shown in FIG. 3, the “programmable logic controller name” that the programmable logic controller 15 returns to the programmable logic controller engineering tool 2 is “PLC5”, and the programmable logic controller 15 The “network address” returned to the programmable logic controller engineering tool 2 is “10.1.3.3.1”, the “status” returned from the programmable logic controller 15 to the programmable logic controller engineering tool 2 is “normal”, and programmable. Logic controller 15 is programmable logic controller engineering "Network name belongs" to return to Lumpur 2 is a "network 3". The programmable logic controller 13 adds “PLC3” to “name of programmable logic controller via” when relaying information that the programmable logic controller 15 returns to the programmable logic controller engineering tool 2.

When the programmable logic controller returns information to the programmable logic controller engineering tool 2 via a plurality of networks, the “programmable logic controller name via” is added with the programmable logic controller name in the order of the via. In the programmable logic controller system 3 shown in FIG. 3, when the programmable logic controller 17 is found, the programmable logic controller 16 that relays the information that the programmable logic controller 17 returns to the programmable logic controller engineering tool 2 first is displayed. “PLC6” is added to the “logic controller name”, and “PLC3” is added to the “programmable logic controller name via” in the programmable logic controller 13 relayed second. Therefore, when the information returned from the programmable logic controller 17 reaches the programmable logic controller engineering tool 2, the “programmable logic controller name via” is “PLC3, PLC6”.

In step S202, the data holding unit 203 confirms the search result. If a programmable logic controller not found in the “programmable logic controller name” 61 of the table 202 is found, “programmable logic controller not found in the table is found” in step S202. In step S203, the data holding unit 203 is found. The data received from the programmable logic controller is added to the table 202.

When a programmable logic controller in the “programmable logic controller name” 61 of the table 202 is found, “programmable logic controller in the table is found” in step S202, and the data holding unit 203 does not update the table 202. The process ends.

If the programmable logic controller in the “programmable logic controller name” 61 of the table 202 is not found, “programmable logic controller in the table could not be found” in step S202, and in step S204, the data holding unit 203 The record of the programmable logic controller that could not be found is deleted from the table 202.

FIG. 9 is a state transition diagram of display state update of the programmable logic controller by the display control unit of the programmable logic controller engineering tool according to the embodiment. The display control unit 201 executes display update from a non-display or deleted expression to an additional expression immediately after the data holding unit 203 adds the target programmable logic controller to the table 202. The display control unit 201 performs display update from the additional expression to the normal expression after a predetermined time has elapsed or a display update operation performed by the user. The display control unit 201 executes display update from the additional expression or the normal expression to the deleted expression immediately after the data holding unit 203 deletes the target programmable logic controller from the table 202. The display control unit 201 performs a display update from the deleted expression to the non-display after receiving a display update operation by the user after a predetermined time has elapsed. Note that the display state of the programmable logic controller is in the initial state of non-display.

That is, the display control unit 201 generates a system configuration diagram with the programmable logic controller that is not displayed in the previously created system configuration diagram and found by the search as an additional expression. In addition, the display control unit 201 generates a system configuration diagram with a normal expression different from the additional representation, which is an additional representation in the previously created system configuration diagram and found by the search. In addition, the display control unit 201 generates a system configuration diagram by using a programmable logic controller that is an additional expression in the previously created system configuration diagram and that has not been found in the search, as a deletion representation different from the additional representation and the normal representation. In addition, the display control unit 201 generates a system configuration diagram by deleting a programmable logic controller that is a normal expression in the previously created system configuration diagram and was not found in the search. In addition, the display control unit 201 generates a system configuration diagram by adding a programmable logic controller that is a deleted representation in the previously created system configuration diagram and found by the search to an additional representation. In addition, the display control unit 201 generates a system configuration diagram by hiding a programmable logic controller that has been deleted in the previously created system configuration diagram and was not found in the search.

After the display control unit 201 updates the display state, the data holding unit 203 updates the displayed device information 205.

FIG. 10 is a state transition diagram of network display state update by the display control unit of the programmable logic controller engineering tool according to the embodiment. The display control unit 201 performs display update from the non-display on the screen or the deleted expression to the additional expression immediately after the data holding unit 203 adds the target network to the table 202 for the first time. The display control unit 201 performs display update from the additional expression to the normal expression after a predetermined time has elapsed or a display update operation performed by the user. The display control unit 201 immediately updates the display from the additional expression or the normal expression to the deleted expression after the data holding unit 203 deletes all the target networks from the table 202. The display control unit 201 performs a display update from the deleted expression to the non-display on the screen after a certain time has elapsed or upon receiving a display update operation by the user. Note that the initial display state of the network is non-display.

That is, the display control unit 201 generates a system configuration diagram with additional representation of the network to which the programmable logic controller that is not displayed in the previously created system configuration diagram and found by the search belongs. In addition, the display control unit 201 generates a system configuration diagram in a normal representation different from the additional representation, which is an additional representation in the previously created system configuration diagram and to which the programmable logic controller found by the search belongs. In addition, the display control unit 201 is a system in which a network that is an additional expression in the previously created system configuration diagram and does not belong to any programmable logic controller found in the search is changed to a deletion expression different from the additional expression and the normal expression. Generate a configuration diagram. In addition, the display control unit 201 generates a system configuration diagram by deleting a network that is a normal expression in the previously created system configuration diagram and that does not belong to any programmable logic controller found in the search. In addition, the display control unit 201 generates a system configuration diagram by using as an additional representation the network to which the programmable logic controller found by the search belongs in the previously created system configuration diagram. In addition, the display control unit 201 generates a system configuration diagram by hiding a network that is a deleted expression in the previously created system configuration diagram and does not belong to any programmable logic controller found by the search.

FIG. 11 is a flowchart showing a flow of an operation for displaying a connection line between the programmable logic controller and the network by the programmable logic controller engineering tool according to the embodiment. The connection between the programmable logic controller and the network includes the displayed device information 205, “programmable logic controller name” 61, “network name to belong to” 63, and “routed programmable logic controller name” 65 in each row of the table 202. It is executed using

The connection line is displayed by performing the processing described later for the programmable logic controller whose programmable logic controller name is included in the displayed device information 205. In step S <b> 301, the communication unit 204 sets “programmable logic controller name” 61 in the table 202 and “via via programmable logic controller” for the programmable logic controller whose programmable device information is included in the displayed device information 205. Search for “name” 65.

When the corresponding programmable logic controller name is found, the result is Yes in step S301, and in step S302, the data holding unit 203 specifies the “belonging network name” 63 corresponding to the found programmable logic controller name.

In step S303, the data holding unit 203 specifies a network corresponding to the “programmed network name” 63 of the found programmable logic controller name.

The association between the programmable logic controller for displaying the connection line and the network is completed by the processing of step S302, step S303, and step S305. In step S304, the display control unit 201 confirms whether there is a connection line between the associated programmable logic controller and the network. If there is no connection line between the associated programmable logic controller and the network, No in step S304, and in step S305, the display control unit 201 adds an additional expression between the associated programmable logic controller and the network. Display the connection line with. When step S305 ends, the programmable logic controller engineering tool 2 ends the process in the loop.

If there is a connection line between the associated programmable logic controller and the network, Yes in step S304, and the programmable logic controller engineering tool 2 ends the processing in the loop.

If the corresponding programmable logic controller name is not found in step S301, No in step S301, and in step S306, the display control unit 201 displays an additional expression or a normal expression already connected to the corresponding programmable logic controller. Check for connection lines. If there is a connection line of an additional expression or a normal expression already connected to the corresponding programmable logic controller, “Yes” is determined in step S306, and in step S307, the display control unit 201 is already connected to the corresponding programmable logic controller. Change the connection line of the added expression or the normal expression to the connection line of the deleted expression If there is no additional expression or normal expression connection line already connected to the corresponding programmable logic controller, No in step S306, and the programmable logic controller engineering tool 2 ends the processing in the loop.

The display change from the additional expression to the normal expression and the display change from the deletion expression to the non-display are executed after a certain time elapses or after the display update operation by the user is accepted, similar to the display change of the programmable logic controller.

Here, a specific example of the flow of displaying connection lines using programmable logic controller names will be described. Here, the connection line 31 between the programmable logic controller 11 and the network 21 in the system configuration diagram shown in FIG.

The data holding unit 203 searches whether “PLC1” which is the programmable logic controller name of the programmable logic controller 11 exists in the “programmable logic controller name” 61 of the table 202. Of the

records

71, 72, 73, 75, 76, 77 of the table 202, the record whose “programmable logic controller name” 61 is “PLC1” is the record 71. Therefore, since “PLC1” is found from the “programmable logic controller name” 61 in the table 202, the data holding unit 203 determines, based on the table 202, the “network name to which the record 71 belongs in the record 71 whose programmable logic controller name is“ PLC1 ”. "Network 1" is specified with reference to "63". In this way, the data holding unit 203 identifies the association between “PLC1” and “network 1”. The display control unit 201 determines whether or not the connection line 31 that connects the programmable logic controller 11 and the network 21 is displayed on the monitor screen. If the connection line 31 is not displayed, the display control unit 201 displays the connection line 31 with an additional expression between them. .

Next, a specific example of connection line display using “routed programmable logic controller name” will be described. Here, the connection line 36 between the programmable logic controller 13 and the network 23 in the system configuration diagram shown in FIG.

The data holding unit 203 searches for “PLC3”, which is the programmable logic controller name of the programmable logic controller 13, in the “routed programmable logic controller name” 65 of the table 202. Of the

records

71, 72, 73, 75, 76, 77 in the table 202, the records whose “PLC3” is the “first programmable logic controller name” 65 are

records

75, 76. Accordingly, since the “programmable logic controller name via” 65 whose “first programmable logic controller is“ PLC3 ”is found, the data holding unit 203 determines that the first programmable logic controller is“ PLC3 ”based on the table 202. The “network 3” 63 is specified with reference to the “name of network” 63 in the

records

75 and 76. In this way, the data holding unit 203 identifies the association between “PLC3” and “network 3”. The display control unit 201 determines whether or not the connection line 36 for connecting the programmable logic controller 13 and the network 23 is displayed on the monitor screen, and if not, displays the connection line 36 with an additional expression between them. .

With the above operation, the programmable logic controller engineering tool 2 according to the embodiment includes the table 202 acquired by the communication unit 201 and held in the data holding unit 203 and the displayed device information 205 when the system configuration diagram is updated. Based on this, a system configuration diagram that displays a difference from the system configuration diagram created last time is generated.

FIG. 12 shows detailed information displayed on the display device when a programmable logic controller that is normally or additionally expressed on the system configuration diagram displayed on the display device by the programmable logic controller engineering tool according to the embodiment is selected. It is a figure which shows an example of a display screen. When an operation for selecting a programmable logic controller that is normally or additionally expressed on the system configuration diagram is performed, the communication unit 204 searches the selected programmable logic controller for the same path as when the programmable logic controller is found. To obtain configuration information of the programmable logic controller and an error history indicating the operation state of the programmable logic controller. The display control unit 201 displays the configuration information 82 and the error history 83 acquired by the communication unit 204 on the detailed information display screen 81. The configuration information 82 displays the unit configuration 84 of the programmable logic controller. In the error history 83, a table 85 of error numbers and error contents of errors that have occurred in the programmable logic controller is displayed. When an operation for selecting the programmable logic controller deleted and expressed on the system configuration diagram is performed, the display control unit 201 displays a message indicating that the connection cannot be made, and then displays the system configuration diagram again.

The programmable logic controller engineering tool 2 according to the embodiment accesses the selected programmable logic controller when the operation for selecting the programmable logic controller normally expressed or additionally expressed on the system configuration diagram is performed, and is programmable. The configuration information of the logic controller and the error history indicating the operation state of the programmable logic controller are acquired. Therefore, even when displaying the configuration information or the operation state of the programmable logic controller on the network different from the programmable logic controller engineering tool 2, the network is connected to the programmable logic controller connected to the programmable logic controller engineering tool 2 or another network. There is no need to hold the configuration and programmable logic controller configuration information in advance.

As described above, according to the programmable logic controller engineering tool according to the embodiment, by connecting to the programmable logic controller system including the programmable logic controller, the configuration information of the network and the programmable logic controller in advance to the programmable logic controller engineering tool. Without holding, the latest state of the programmable logic controller system including another network can be obtained and displayed. In addition, because the network and programmable logic controller that have been added or deleted since the previous display can be highlighted in the system configuration diagram with additional and deleted expressions, the system configuration of the programmable logic controller system from the time when the previous system configuration diagram was displayed Can be easily recognized.

The configuration described in the above embodiment shows an example of the contents of the present invention, and can be combined with another known technique, and can be combined with other configurations without departing from the gist of the present invention. It is also possible to omit or change the part.

1 information processing device, 2 programmable logic controller engineering tool, 3 programmable logic controller system, 11, 12, 13, 14, 15, 16, 17 programmable logic controller, 21, 22, 23, 24 network, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40 connection line, 61 programmable logic controller name, 62 network address, 63 belonging network name, 64 status, programmable logic controller name via 65, 71, 72, 73, 75 76, 77 records, 81 detailed information display screen, 82 configuration information, 83 error history, 84 unit configuration, 85 table, 101 arithmetic unit, 102 memory, 103 input Location, 104 display unit, 105 communication device, 106 storage device, 107 programmable logic controller engineering tool program, 201 display control unit, 202 table 203 data holding unit, 204 communication unit.

Claims

The programmable logic controller in the programmable logic controller system including the programmable logic controller connected to the network is searched, and the programmable logic controller found by the search belongs to the network to which the programmable logic controller found by the search belongs A communication unit for obtaining network information;
Based on the information acquired by the communication unit, a display control unit that generates a system configuration diagram showing a network configuration of the programmable logic controller system;
Generating a list information of the expression method of the programmable logic controller included in the system configuration diagram, and having a data holding unit that holds the list information and the information acquired by the communication unit;
The display control unit displays a difference from the previously created system configuration diagram based on the information acquired by the communication unit and stored in the data storage unit and the list information when the system configuration diagram is updated A programmable logic controller engineering tool characterized by generating a system configuration diagram.
The display control unit is not displayed in the system configuration diagram created last time, and the programmable logic controller found by the search is an additional expression,
In the system configuration diagram created last time, it is the additional expression, and the programmable logic controller found by the search is changed to a normal expression different from the additional expression,
In the system configuration diagram created last time, it is the additional expression, and the programmable logic controller that was not found in the search is changed to a deleted expression different from the additional expression and the normal expression,
In the system configuration diagram created last time, it is the normal expression, and the programmable logic controller that was not found by the search is changed to the deleted expression,
In the system configuration diagram created last time, it is the deleted expression, and the programmable logic controller found by the search is the additional expression,
2. The programmable logic controller engineering according to claim 1, wherein the system configuration diagram is generated by hiding a programmable logic controller that is the deleted expression and not found in the search in the previously created system configuration diagram. tool.
The display control unit is not displayed in the system configuration diagram created last time, and the network to which the programmable logic controller found by the search belongs is an additional expression,
In the system configuration diagram created last time, it is the additional expression, and the network to which the programmable logic controller found by the search belongs is a normal expression different from the additional expression,
The network that does not belong to any programmable logic controller found in the search in the additional expression in the system configuration diagram created last time is a deletion expression different from the additional expression and the normal expression,
In the system configuration diagram created last time, it is the normal expression, and any programmable logic controller found by the search does not belong to the deleted expression,
In the system configuration diagram created last time, it is the deleted expression, and the network to which the programmable logic controller found by the search belongs is the additional expression,
The system configuration diagram is generated by hiding a network that is the deleted expression and does not belong to any programmable logic controller found in the search in the previously created system configuration diagram. Programmable logic controller engineering tool as described in.
The communication unit acquires state information indicating whether the programmable logic controller found in the search is in a normal state or an abnormal state from the programmable logic controller found in the search,
The display control unit generates the system configuration diagram for displaying the programmable logic controller in the normal state and the programmable logic controller in the abnormal state by different display methods based on the state information. The programmable logic controller engineering tool according to claim 1.
The said communication part searches a programmable logic controller also about the network indirectly connected via the said programmable logic controller in the said programmable logic controller system, The any one of Claim 1 to 4 characterized by the above-mentioned. Programmable logic controller engineering tool as described in.
In the arithmetic unit of the information processing device,
A search process for searching for the programmable logic controller in a programmable logic controller system including a programmable logic controller connected to a network;
From the programmable logic controller found in the search process, an acquisition process for obtaining information of the belonging network that is the network to which the programmable logic controller found in the search process belongs,
Based on the information acquired in the acquisition process, a process of generating a system configuration diagram showing a network configuration of the programmable logic controller system;
Processing for generating list information of programmable logic controllers included in the system configuration diagram;
A data holding process for holding the list information and the information acquired in the acquisition process;
When updating the system configuration diagram, executing a process of generating a system configuration diagram that displays a difference from the previously created system configuration diagram based on the information held in the data holding process and the list information Programmable logic controller engineering tool program characterized by