JP3662822B2 - Plant control system - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an intelligent device deployed in a plant and a plant control system that collects and monitors data of a controller that controls these intelligent devices using tags.
[0002]
[Prior art]
As a conventional plant control system of this type, for example, there is a configuration as shown in FIG. 15 (see Japanese Patent Laid-Open No. 10-63315).
[0003]
This conventional plant control system , The intelligent devices 1a, 1b,... Arranged in various devices of the plant, the controller 2 that controls the intelligent devices 1a, 1b,..., And the intelligent devices 1a, 1b,. The monitoring device 3 to be monitored, the configurator 4 for setting the control rules of the intelligent devices 1a, 1b,... And the controller 2, the field bus 5 for connecting the intelligent devices 1a, 1b,. A control bus 6 that connects between the device 3 and the configurator 4 and a gateway device 7 that relays between the field bus 5 and the control bus 6 are provided.
[0004]
Each intelligent device 1a, 1b,... Is a control device such as a flow sensor or a valve for controlling the plant, and each intelligent device 1a, 1b,... Has a predetermined function based on a command from the controller 2. Are programmed as function blocks 11a, 11b,....
[0005]
The controller 2 is capable of arbitrary programming of control logic. As the function block 21, for example, a PID block for realizing a PID (proportional integral derivative) control function is loaded.
[0006]
The monitoring device 3 takes in the data of the intelligent devices 1a, 1b,... And the controller 2, displays the data as standard parts 32, and tag management for managing the relation between the standard parts 32 and tag information. A tag management table memory 33 in which a table is stored, and a tag management function unit 34 that collects tag data accumulated in the gateway device 7 by referring to the tag management table stored in the tag management table memory 33 I have.
[0007]
The configurator 4 collects the data for the control definition program 41, the tag definition screen 41 for defining the tags used in the monitoring device 1, the function blocks 1a, 1b,... And the controller 2 and stores them in the gateway device 7. A display 43 for displaying a program editing screen 42 describing a program for setting a control rule, input means 44 such as a keyboard and a mouse for inputting program data using the screens 41 and 42, And a compiler 45 that compiles a program described on the program editing screen 42 and outputs it as an execution module.
[0008]
The gateway device 7 includes a fieldbus communication function unit 71 that performs communication with the fieldbus 5, a control bus communication function unit 72 that performs communication with the control bus 6, and an execution engine that executes an execution module downloaded from the configurator 4. And a tag memory 74 for storing data corresponding to tags obtained by the intelligent devices 1a, 1b,...
[0009]
Next, in the conventional plant control system having the above-described configuration, an operation when performing configuration for setting the control rules of the intelligent devices 1a, 1b,... And the controller 2 will be described with reference to the flowchart shown in FIG. . In the following, S means each step.
[0010]
First, on the tag definition screen 41 displayed on the display device 43 of the configurator 7, the input means 44 is operated to define tags used in the program and the monitoring device 3 (S161). The defined tag includes a link number (LinkNo.) That determines where the tag is to be arranged in the tag memory 74, a tag number (TAGNo.) For identifying the tag in the plant, and tag data. The tag format (TAGTYPE) that defines the structure is included.
[0011]
Next, on the program editing screen 42, the input device 44 is operated to collect data of the intelligent devices 1a, 1b,... 3 A control rule program is written so that it can be monitored at step S162.
[0012]
For example, as an intelligent device, there are a flow sensor 1a and a valve 1b. When the controller 2 attempts to PID control the opening degree of the valve 1b based on the detection output of the flow sensor 1a, the detection data of the flow sensor 1a is used. Control that stores in the tag memory 74 of the gateway device 7 and stores opening degree data in the tag memory 74 of the gateway device 7 when the opening degree of the valve 1 b is PID controlled by the function block 21 of the controller 2. The rules are described by the program on the program editing screen 42. Then, the program is compiled by the compiler 45 to generate an execution module (S163).
[0013]
Also, The configurator 4 Monitoring device 3 In order to manage the relation between the standard part 32 and the tag information, a tag management table is generated, and the tag management table is used as a monitoring device. 3 (S164). In the monitoring device 3, the transferred tag management table is stored in the tag management table memory 33.
[0014]
On the other hand, the configurator 4 downloads the execution module generated by the compiler 45 to the gateway device 13. C (S165).
[0015]
In this way, when the configuration is completed by setting the control rules of the intelligent devices 1a, 1b,... And the controller 2, the execution engine unit 73 of the gateway device 7 is downloaded from the configurator 4 thereafter. By executing the command with reference to the execution module, data is collected from the intelligent devices 1a, 1b,..., Such as flow sensors and valves, and the controller 2, and the data is sent to the corresponding area of the tag memory 74 at a constant cycle. Write.
[0016]
Further, the monitoring device 3 refers to the tag management table stored in the tag management table memory 33 by the tag management function unit 34, and uses the tag information stored in the tag memory 74 of the gateway device 7 as a fixed period. The tag information is displayed on the screen of the standard component 32 set in correspondence with each intelligent device 1a, 1b,.
[0017]
For example, in the above example, the opening degree data of the valve 1b, which is PID controlled by the controller 2 based on the detection output of the flow sensor 1a, is read from the tag memory 74 of the gateway device 7, and the indicator of the monitoring device 3 is displayed. 31 is displayed as a standard part 32.
[0018]
[Problems to be solved by the invention]
Thus, the conventional plant control system is a monitoring device for configuration. 3 Standard parts 32 In order to generate a tag having a standard data structure corresponding to, it is necessary to write the control rules of the intelligent devices 1a, 1b,... Is on.
[0019]
Moreover, when changing the tag, not only the tag but also the program for setting the control rule must be changed at the same time. Further, compilation by the compiler 45 and downloading of the execution module to the gateway device 7 are performed. Since it was necessary, there was a problem that engineering took time.
[0020]
The present invention has been made to solve the above-described problems, and an operator can monitor an intelligent device or controller simply by connecting the function block of the intelligent device or controller on the screen. A tag management table and a mapping table that associates tags with function blocks of each device are automatically generated. By using these tables, programming for configuration and monitoring of intelligent devices and controllers are performed. An object of the present invention is to provide a plant control system that can reduce the time required for engineering.
[0021]
[Means for Solving the Problems]
A plant control system according to the invention of claim 1 is an intelligent device deployed in a plant, a controller that controls each intelligent device, a monitoring device that takes in the data of the intelligent device and the controller and monitors its state, Configurator for setting control rules for the intelligent devices and controllers, a field bus for connecting the intelligent devices, a control bus for connecting the controllers, monitoring devices, and configurators, and the field bus and control A gateway device that relays to the bus, and the configurator includes a browser that displays a hierarchical structure of function blocks of the intelligent device and the controller, and the browser Drag and drop function block Luo tag configuration screen by connecting the function blocks in the tag management table and a gateway device for tag management by the monitoring device Intelligent A table creating means for generating a mapping table for specifying a tag storage position of a device or a controller, and the gateway device communicates with a fieldbus communication function unit for communicating with the field bus and the control bus. The control bus communication function unit to perform, the mapping table memory for storing the mapping table downloaded from the configurator, and the mapping table stored in the mapping table memory with reference to the mapping table memory Intelligent A gateway processing unit that collects data corresponding to tags from devices and controllers, and a tag memory that stores tags of the intelligent devices and controllers, and the monitoring device displays intelligent device and controller information as standard parts A tag management table memory that stores a tag management table transferred from the configurator, a tag management table stored in the tag management table memory, and stored in the tag memory of the gateway device And a tag management function unit that collects tag data.
[0022]
A plant control system according to a second aspect of the present invention is the configuration according to the first aspect, wherein the configurator automatically transmits a tag management table to the monitoring device after the tag is configured by the operator. On the other hand, the monitoring device includes a tag matching function unit that automatically stores a tag management table from the tag matching function unit of the configurator in the tag management table memory.
[0023]
A plant control system according to a third aspect of the present invention is the plant control system according to the first aspect, wherein instead of providing the monitoring device with a tag matching function unit and a tag management table memory, the gateway device has a tag matching function unit and tag management. A table memory is provided, and the monitoring device collects monitoring data by referring to a tag management table of the gateway device.
[0024]
A plant control system according to a fourth aspect of the present invention is the configuration according to the first aspect, wherein the plant control system includes a plurality of the gateway devices, and the configurator assigns a plurality of defined tags to any of the plurality of gateway devices. It is characterized by having a tag placement function section for defining the above.
[0025]
According to a fifth aspect of the present invention, in the configuration of the fourth aspect, the configurator calculates the load on each gateway device based on the number of tags downloaded to each gateway device and information on the program. The gateway processing load calculation function unit for automatically setting which gateway device should be assigned a tag is provided.
[0026]
A plant control system according to a sixth aspect of the present invention is the configuration according to any one of the first to fifth aspects, wherein the configurator includes the tag information defined on the tag configuration screen and actual intelligent information. It is characterized by including a tag verification function unit that detects whether or not the state of the device or the controller matches, and displays the fact on the tag configuration screen if they do not match.
[0027]
A plant control system according to a seventh aspect of the present invention is the plant control system according to the sixth aspect, wherein the configurator activates the tag collation function unit at a fixed period during online operation to prevent a failure or separation of the intelligent device or controller. A fixed-cycle monitoring unit that detects occurrence in real time is provided.
[0028]
DETAILED DESCRIPTION OF THE INVENTION
Embodiment 1 FIG.
FIG. 1 is a block diagram showing a configuration of a plant control system according to Embodiment 1 of the present invention, and parts corresponding to the prior art shown in FIG.
[0029]
In FIG. 1, 1a, 1b,... Are intelligent devices deployed in the plant, 2 is a controller that controls each intelligent device 1a, 1b,..., 3 is the intelligent device 1a, 1b,. A monitoring device for monitoring the state, 4 is a configurator for setting the control rules of the intelligent devices 1a, 1b,... And the controller 2, 5 is a field bus for connecting the intelligent devices 1a, 1b,. The control bus 7 connects the monitoring device 3 and the configurator 4, and 7 is a gateway device that relays between the field bus 5 and the control bus 6.
[0030]
The configurator 7 includes a browser 46 that displays the hierarchical structure of the function blocks 11a, 11b,..., 21 of the intelligent devices 1a, 1b,. Input means 44 such as a keyboard and a mouse for performing an operation of connecting the function blocks 11a, 11b,..., 21 by dragging and dropping the icons of the function blocks 11a, 11b,. A tag management screen (see FIG. 3) by the monitoring device 3 by the operation on the tag configuration screen 47 by the input means 44 and the tag-corresponding data from the intelligent devices 1a, 1b,. Mapping table to identify the storage location and a table creating means 48 for generating, respectively (see FIG. 2).
[0031]
The monitoring device 3 includes a display 31 for displaying information of the intelligent devices 1a, 1b,... And the controller 2 as standard parts, a tag management table memory 33 for storing a tag management table transferred from the configurator 4, and the tag management. A tag management function unit 34 that collects data stored in the tag memory 74 of the gateway device 7 with reference to the tag management table stored in the table memory 33.
[0032]
The gateway device 7 includes a field bus communication function unit 71 that performs communication with the field bus 5, a control bus communication function unit 72 that performs communication with the control bus 6, and a mapping table that stores a mapping table downloaded from the configurator 4. A gateway 75 that collects data corresponding to tags from the field devices 1a, 1b,... And the controller 2 with reference to the mapping table stored in the mapping table memory 75, and each intelligent device 1a , 1b,... And a tag memory 74 for storing tag data of the controller 2.
[0033]
FIG. 2 is an explanatory diagram showing the contents of the mapping table created by the table creation means 48 of the configurator 4.
This mapping table includes a link number (Link No.) that determines where a tag is to be placed in the tag memory 74 of the gateway device 7 and a tag number that is assigned so as not to be duplicated between plants in order to identify the tag. (TAG No.), tag format (TAGTYPE) indicating the data structure of the tag, and the intelligent devices 1a, 1b,... And the FB (function block) address to which the function blocks 11a, 11b,..., 21 are assigned in the node. And the data storage position of each function block 11a, 11b, ..., 21 in the tag memory 74 is specified by the node address and the FB address.
[0034]
FIG. 3 is an explanatory diagram showing the contents of the tag management table created by the table creation means 48 of the configurator 4.
This tag management table includes a controller address where tag data exists, a link number (Link No.) that determines where to place the tag in the tag memory 74, and a tag number ( TAG No.).
[0035]
Next, in the plant control system of the first embodiment, the operation when performing configuration will be described with reference to the flowchart shown in FIG.
[0036]
The function blocks 11a, 11b,... 21 for realizing the intended functions of the intelligent devices 1a, 1b,... And the controller 2 that can be used in the plant offline (or online) in the browser 46 of the configurator 4 in a tree shape. It is displayed (S41).
[0037]
Next, the operator operates the input means 44 to drag and drop these function blocks 11a, 11b,..., 21 onto the tag configuration screen 47, and then connect the function blocks 11a, 11b,. Then, the data transmission / reception relationship is determined (S42).
[0038]
For example, as an intelligent device, there are a flow sensor 1a and a valve 1b. When the controller 2 attempts to PID control the opening of the valve 1b based on the detection output of the flow sensor 1a, the flow sensor 1a, the controller 2, The function blocks 11a, 21, and 11b of the valve 1b are dragged and dropped on the tag configuration screen 47 so that the function blocks 11a, 21, and 11b are connected to each other.
[0039]
Subsequently, the operator designates a tag number (TAGNo.) And a tag type (TAGTYPE) (S42).
In response to this, the table creation means 48 automatically generates the mapping table shown in FIG. 2 and the tag management table shown in FIG. 3 (S43).
[0040]
Next, the operator operates the input unit 44 to transfer the tag management table generated by the table creation unit 48 to the monitoring device 3 by tag binding (S44). As a result, this tag management table is stored in the tag management table memory 33 of the monitoring device 3. Further, the configurator 4 downloads the mapping table to the gateway device 7 (S45). As a result, the mapping table is stored in the mapping table memory 75 of the gateway device 7.
[0041]
When the configuration is completed in this way, thereafter, the gateway processing unit 76 of the gateway device 7 sends the controller 2 and each intelligent device 1a, 1b,... At a constant cycle according to the mapping table stored in the mapping table memory 75. For the tag, data corresponding to the tag is collected, and the data is stored in the corresponding area of the tag memory 74.
[0042]
Further, the monitoring device 3 refers to the tag management table stored in the tag management table memory 33 by the tag management function unit 34, and uses the tag information stored in the tag memory 74 of the gateway device 7 as a fixed period. The tag information is displayed on the screen of the standard component 32 set in correspondence with each intelligent device 1a, 1b,.
[0043]
For example, in the above example, the tag data of the opening degree of the valve 1b that is PID controlled by the controller 2 based on the detection output of the flow sensor 1a is in the tag memory 74 of the gateway device 7. tag number F The data is read from the area 1C001 and displayed as the standard component 32 on the display 31 of the monitoring device 3.
[0044]
In this way, when the function blocks 11a, 11b,..., 21 are distributed to the intelligent devices 1a, 1b,. Although the control rules for data collection are described one by one on the program editing screen 42 by the program, in the first embodiment, the function blocks 11a, 11b,. Since the mapping table and the tag management table are automatically generated, and programming and monitoring by tags can be performed by these tables, the time required for engineering the control logic and the monitoring screen can be shortened.
[0045]
Embodiment 2. FIG.
FIG. 5 is a block diagram showing the configuration of the plant control system according to the second embodiment of the present invention, and parts corresponding to those in the first embodiment shown in FIG.
[0046]
The feature of the plant control system of the second embodiment is that, in addition to the configuration of the first embodiment shown in FIG. 1, the configurator 4 includes a tag management generated on the tagging configuration screen 47 by the table creating means 48. A tag matching function unit 49 for automatically reading the table and transferring it to the monitoring device 1 is provided, while the monitoring device 3 takes in the tag management table transferred from the configurator 4 and automatically stores it in the tag management table memory 33. That is, a tag matching function unit 35 is provided.
Since the other configuration is the same as that of the first embodiment shown in FIG. 1, detailed description is omitted here.
[0047]
Next, the operation in the case of performing configuration in the plant control system of the second embodiment will be described with reference to the flowchart shown in FIG.
In FIG. 6, S61 to S63 and S65 are basically the same as S41 to S43 and S45 in the flowchart (FIG. 4) in the first embodiment, but in this second embodiment, in S64, the configurator 4 is automatically transferred to the monitoring device 3 by the tag matching function unit 49, and the tag matching function unit 35 of the monitoring device 3 tags the tag management table accordingly. Stored in the management table memory 33. As a result, the tag management table is always matched.
[0048]
In the first embodiment, in order to make the contents of the tag management table generated by the configurator 4 and the tag management table stored in the monitoring device 3 match, the tag binding process is manually executed using the input unit 44. However, in the second embodiment, the tag matching function units 49 and 35 automatically perform this binding work, so that the tag definition always matches between the monitoring device 3 and the configurator 4, and a problem occurs due to the mismatch. Can be eliminated, improving quality and shortening engineering time.
[0049]
Embodiment 3 FIG.
FIG. 7 is a block diagram showing the configuration of the plant control system according to the third embodiment of the present invention, and parts corresponding to those in the second embodiment shown in FIG.
[0050]
The feature of the plant control system of the third embodiment is that, in the second embodiment shown in FIG. 5, the monitoring device 3 is provided with a tag management function unit 34 and a tag matching function unit 35. The gateway device 7 is provided with a tag matching function unit 77 and a tag management table memory 78.
Other configurations are the same as those of the second embodiment shown in FIG. 5, and thus detailed description thereof is omitted here.
[0051]
Next, the operation in the case of performing configuration in the plant control system of the third embodiment will be described with reference to the flowchart shown in FIG.
In FIG. 8, S81 to S83 and S85 are basically the same as S61 to S63 and S65 in the flowchart (FIG. 6) in the second embodiment, but in this third embodiment, in S84, the configurator 4 is automatically transferred to the gateway device 7 by the tag matching function unit 49 and stored in the tag management table memory 78, so that the tag management tables are always matched. .
[0052]
As described above, in the first and second embodiments, the tag management table memory 33 is provided in the monitoring device 3, whereas in the third embodiment, the tag matching function unit 77 is provided in the gateway device 7. And the tag management table memory 78, when the monitoring device 3 is newly replaced, the tag data is matched between the configurator 4 and the monitoring device 3, so that no processing is required. Engineering costs for replacement can be reduced.
[0053]
Embodiment 4 FIG.
FIG. 9 is a block diagram showing the configuration of the plant control system according to the fourth embodiment of the present invention, and parts corresponding to those in the first embodiment shown in FIG.
[0054]
A feature of the plant control system of the fourth embodiment is that a plurality of gateway devices 7a, 7b,... Are provided for the configuration of the first embodiment, and the configurator 4 has a plurality of defined tags. A tag placement function unit 50 is provided for defining which of the gateway devices 7a, 7b,.
[0055]
Here, the configuration of each gateway device 7a, 7b,... Is basically the same. Further, which gateway device 7a, 7b,..., Intelligent device 1a, 1b, 1c,... And each function block 11a, 11b, 11c,. Specified by the address. Here, the function blocks 11a and 11b of the flow sensor 1a and the valve 1b are assigned to one gateway device 7a so that the function blocks 11c and 11c of the temperature sensor 1c belong to the other gateway device 7b. To do.
Since other configurations are the same as those in the first embodiment, detailed description thereof is omitted here.
[0056]
Next, the operation in the case of performing configuration in the plant control system of the fourth embodiment will be described with reference to the flowchart shown in FIG.
In FIG. 10, S101 and S102 are basically the same as S41 and S42 in the flowchart (FIG. 4) in the first embodiment, but in this fourth embodiment, in S103, the operator moves each intelligent device 1a. , 1b, 1c,... And the function blocks 11a, 11b, 11c,..., 21 of the controller 2 are set to which gateway device 7a, 7b,. Therefore, the table creation unit 48 creates a mapping table and a tag management table based on the tag placement information of the tag placement function unit 50.
[0057]
Next, the operator operates the input unit 44 to transfer the tag management table generated by the table creation unit 48 to the monitoring device by tag binding (S104). Moreover, the configurator 4 downloads a mapping table to predetermined gateway apparatus 7a, 7b, ... based on the tag arrangement information of the tag arrangement function part 50 (S105). Thus, the mapping table is stored in the mapping table memory 75 of each gateway device 7a, 7b,.
[0058]
When the gateway device 7 that downloads the mapping table is a single device as in the first embodiment, when the number of intelligent devices 1a, 1b,... However, in this fourth embodiment, a plurality of gateway devices 7a, 7b,... Are provided, and the gateway devices 7a, 7a,. Since the mapping table is distributed in the mapping table memory 75 of 7b,..., The update of the tag memory 74 can be distributed and the data can be updated at high speed.
[0059]
Embodiment 5 FIG.
FIG. 11 is a block diagram showing the configuration of the plant control system in the fifth embodiment of the present invention, and the same reference numerals are given to the portions corresponding to those in the fourth embodiment shown in FIG.
[0060]
The feature of the plant control system of the fifth embodiment is that, in the configuration of the fourth embodiment, the number of tags mapped to each of the current gateway devices 7a, 7b,... Is based on the gateway processing load calculation function unit 51 that calculates the load in each gateway device 7a, 7b,... And automatically sets which gateway device 7a, 7b,. .
Since the other configuration is the same as that of the fourth embodiment shown in FIG. 9, detailed description thereof is omitted here.
[0061]
Next, the operation in the case of performing configuration in the plant control system of the fifth embodiment will be described with reference to the flowchart shown in FIG.
In FIG. 12, S121 to S125 are basically the same as S101 to S105 in the flowchart (FIG. 10) in the fourth embodiment, but in this fifth embodiment, in S126, the gateway processing load calculation function unit 51 automatically sets which gateway device 7a, 7b,... Should be assigned the tag of each function block 11a, 11b, 11c,..., 21 of each intelligent device 1a, 1b, 1c,. The tag placement information is registered in the tag placement function unit 50. The table creation unit 48 creates a mapping table and a tag management table based on the tag placement information of the tag placement function unit 50.
[0062]
In the above-described fourth embodiment, when defining a tag, it is necessary for the operator himself to determine which gateway device 7a, 7b,... Should place the tag, and a large number of tags need to be configured. Although it was difficult to manage in a large-scale system, in the fifth embodiment, the gateway processing load calculation function unit 51 allows any of the gateway devices 7a, 7b,... Since it is automatically set whether the tag is assigned to the gateway device 7a, 7b,..., The operator does not need to manage which gateway device 7a, 7b,. be able to.
[0063]
Embodiment 6 FIG.
FIG. 13 is a block diagram showing the configuration of the plant control system according to the sixth embodiment of the present invention, and parts corresponding to those in the first embodiment shown in FIG.
[0064]
The plant control system according to the sixth embodiment is characterized in that, in addition to the configuration of the first embodiment, the tag information defined in the tag configuration screen 47 and the intelligent devices 1a, 1b,. In other words, a tag verification function unit 52 is provided for detecting whether or not the actual state matches, and displaying the fact on the tag configuration screen 47 if they do not match.
Since the other configuration is the same as that of the first embodiment shown in FIG. 1, detailed description thereof is omitted here.
[0065]
In the first embodiment, the intelligent devices 1a, 1b,... Assigned to the tags defined by the configurator 4 and the controller 2 are operating normally, and the configuration result matches the actual device connection. In the sixth embodiment, the operation of each intelligent device 1a, 1b,... And controller 2 is monitored by the tag verification function unit 52, and the failure is detected. , And detection of failure and display of defective function blocks on the tag configuration screen 47. Therefore, replacement or failure of each intelligent device 1a, 1b,... Or controller 2 can be detected at an early stage, and engineering time can be reduced. .
[0066]
Embodiment 7 FIG.
FIG. 14 is a block diagram showing the configuration of the plant control system according to the seventh embodiment of the present invention, and parts corresponding to those in the sixth embodiment shown in FIG.
[0067]
The feature of the plant control system of the seventh embodiment is that, in addition to the configuration of the sixth embodiment, in the configurator 4, the tag matching function unit 52 is activated at regular intervals when online, and tag matching is performed. This is that a fixed period monitoring unit 53 is provided for detecting in real time a failure or detachment of the devices 1a, 1b,...
The other configuration is the same as that of the sixth embodiment shown in FIG. 13, and a detailed description thereof is omitted here.
[0068]
In the sixth embodiment, although the tag collation function unit 52 is provided, since collation is not performed in real time, detection of failure or separation of the intelligent devices 1a, 1b,. As in the seventh embodiment, the fixed period monitoring unit 47 is provided to detect the failure or separation of the intelligent devices 1a, 1b,... It can be shortened.
[0069]
In the plant control systems of the above-described first to seventh embodiments, the control bus 6 and the field bus 5 are provided separately, but the same bus can be used. Moreover, although the tag is allocated to the gateway apparatus 7, this allocation is realizable if the data collection function part is mounted also to the normal programmable controller.
[0070]
【The invention's effect】
In the plant control system according to the first aspect of the invention, the operator connects the function block mounted on the intelligent device or controller by drag & drop operation on the tag configuration screen of the configurator. Do Just tag management table and mapping table are automatically generated, these tables Can be transferred to monitoring devices and gateway devices Since configuration is performed, even when function blocks are distributed to controllers and intelligent devices, tag data of controllers and intelligent devices can be collected and monitored, shortening the time required for engineering be able to.
[0071]
The plant control system according to the second aspect of the present invention provides a tag matching function unit that does not need to manually execute tag binding processing in order to match the tag definition generated by the configurator with the tag management table of the monitoring device. Since this binding operation can be automatically performed, the tag definitions always match between the monitoring device and the configurator, and the occurrence of problems due to the mismatch can be eliminated to improve quality and shorten engineering time.
[0072]
In the plant control system according to the third aspect of the present invention, the tag matching function unit and the tag management table are arranged in the gateway device. Therefore, when the monitoring device is newly replaced, the tag is set between the configurator and the monitoring device. Since the data is matched, no processing is required, and the engineering cost when replacing the monitoring device can be reduced.
[0073]
The plant control system according to the invention of claim 4 is provided with a plurality of gateway devices, and the mapping table is distributed to each gateway device, so that the update of the tag memory can be distributed, and the gateway processing Since the load is reduced, the data contents of the tag memory can be updated at regular intervals.
[0074]
In the plant control system according to the invention described in claim 5, when defining the tag, the gateway processing load calculation function unit automatically decides which gateway device the tag is to be placed without having to decide by itself. Therefore, management is possible even in a large-scale system that requires configuration of a large number of tags, and engineering time can be reduced.
[0075]
In the plant control system according to the sixth aspect of the present invention, is the device or controller assigned to the tag defined by the configurator operating normally, and whether the configuration result matches the actual device connection? Even if the operator himself / herself does not perform verification such as “no”, the tag verification function unit can easily detect the mismatch, so that replacement of equipment and failure can be detected at an early stage, and engineering time can be reduced.
[0076]
Since the plant control system according to the invention described in claim 7 is collated in real time by the fixed-cycle monitoring unit, it is possible to detect the failure or detachment of the device or the controller at an early stage, and the average repair time at the time of failure (MTTR) can be shortened.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a configuration of a plant control system in Embodiment 1 of the present invention.
FIG. 2 is an explanatory diagram showing a mapping table used in the first embodiment.
FIG. 3 is an explanatory diagram showing a tag management table used in the first embodiment.
FIG. 4 is a flowchart showing a configuration procedure in the first embodiment.
FIG. 5 is a block diagram showing a configuration of a plant control system in Embodiment 2 of the present invention.
FIG. 6 is a flowchart illustrating a configuration procedure according to the second embodiment.
FIG. 7 is a block diagram showing a configuration of a plant control system in Embodiment 3 of the present invention.
FIG. 8 is a flowchart illustrating a configuration procedure according to the third embodiment.
FIG. 9 is a block diagram showing a configuration of a plant control system in Embodiment 4 of the present invention.
FIG. 10 is a flowchart illustrating a configuration procedure according to the fourth embodiment.
FIG. 11 is a block diagram showing a configuration of a plant control system in a fifth embodiment of the present invention.
FIG. 12 is a flowchart illustrating a configuration procedure according to the fifth embodiment.
FIG. 13 is a block diagram showing a configuration of a plant control system in Embodiment 6 of the present invention.
FIG. 14 is a block diagram showing a configuration of a plant control system in a seventh embodiment of the present invention.
FIG. 15 is a block diagram showing a configuration of a conventional plant control system.
FIG. 16 is a flowchart showing a conventional configuration procedure;
[Explanation of symbols]
1a, 1b, 1c Intelligent device, 2 controller, 3 monitoring device, 4 configurator, 5 field bus, 6 control bus, 7, 7a, 7b gateway device, 11a, 11b, 11c function block, 21 function block, 31 display, 33 tag management table memory, 34 tag management function part, 35 tag matching function part, 44 input means, 46 browser, 47 tag configuration screen, 48 table creation means, 49 tag matching function part, 50 tag placement function part, 51 gateway Processing load calculation function section, 52 tag verification function section, 53 fixed period monitoring section, 71 fieldbus communication function section, 72 control bus communication function section, 74 tag memory, 75 mapping table memory, 76 gateway processing section, 77 tag matching function Part, 78 Tag management table memory.

Claims (7)

An intelligent device deployed in the plant, a controller that controls each intelligent device, a monitoring device that takes in the data of the intelligent device and controller and monitors its status, and a configurator that sets control rules for the intelligent device and controller; A field bus for connecting the intelligent devices, a control bus for connecting the controller, the monitoring device, and the configurator, and a gateway device for relaying the field bus and the control bus. ,
The configurator is configured to connect the function block by connecting the function block by dragging and dropping the function block on the tag configuration screen from a browser that displays a hierarchical structure of the function blocks of the intelligent device or the controller. A tag management table for tag management and a table creation means for generating a mapping table for specifying the tag storage position of the intelligent device or controller in the gateway device,
The gateway device includes a fieldbus communication function unit that performs communication with the field bus, a control bus communication function unit that performs communication with the control bus, and a mapping table memory that stores a mapping table downloaded from the configurator. A gateway processing unit that collects tag-corresponding data from the intelligent device or controller with reference to a mapping table stored in the mapping table memory, and a tag memory that stores tags of the intelligent device or controller ,
The monitoring apparatus includes a display that displays information on intelligent devices and controllers as standard parts, a tag management table memory that stores a tag management table transferred from the configurator, and tags stored in the tag management table memory And a tag management function unit that collects tag data stored in a tag memory of the gateway device with reference to a management table. The configurator includes a tag matching function unit that automatically transmits a tag management table to a monitoring device after tag configuration by an operator, while the monitoring device includes a tag management table from the tag matching function unit of the configurator. The plant control system according to claim 1, further comprising: a tag matching function unit that automatically stores the data in the tag management table memory. Instead of providing a tag matching function unit and a tag management table memory in the monitoring device, the gateway device is provided with a tag matching function unit and a tag management table memory, and the monitoring device refers to the tag management table of the gateway device. The plant control system according to claim 1, wherein monitoring data is collected by the method. 2. The plant according to claim 1, wherein the plant includes a plurality of the gateway devices, and the configurator includes a tag placement function unit that defines which of the plurality of defined tags is assigned to each of the plurality of gateway devices. Control system. The configurator calculates a load in each gateway device based on the number of tags downloaded to each gateway device and program information, and automatically sets which gateway device should be assigned a tag. The plant control system according to claim 4, further comprising: The configurator detects whether or not the tag information defined on the tag configuration screen matches the actual intelligent device or controller status. The plant control system according to any one of claims 1 to 5, further comprising a tag verification function unit that displays The said configurator is provided with the fixed period monitoring part which activates the said tag collation function part in a fixed period at the time of online, and detects generation | occurrence | production of a failure and detachment | leave of the said intelligent device or controller in real time. Plant control system.

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