JP3300978B2 - Monitoring and control system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a supervisory control system having a redundancy (duplication) function.

[0002]

2. Description of the Related Art FIG. 9 shows a main part of a conventional supervisory control system. In FIG. 1, reference numeral 1 denotes a higher-level device, 2 denotes a redundant controller, and 3 denotes an input / output unit (real I / O) for real data from various monitoring points. The redundant controller 2 includes a primary controller 2-1 and a secondary controller 2-
2 and a switching unit 2-3. The same program and database are stored in the primary controller 2-1 and the secondary controller 2-2, and the primary controller 2-1 is used when there is no redundancy and the secondary controller 2-2 is used when there is redundancy.

[Non-redundant] Normally, the primary controller 2-1 collects data from various monitoring points via the real I / O 3 and sends the collected data from the various monitoring points to the host device 1. The host device 1 displays data of various monitoring points from the primary controller 2-1 on a display (CRT screen) as data of various corresponding logical points in the control logic diagram. [Redundancy] When an abnormality occurs in the primary controller 2-1, the switching unit 2-3 detects the abnormality and switches the control to the secondary controller 2-2. This allows
Data from the various monitoring points is collected by the secondary controller 2-2, and the collected data from the various monitoring points is sent to the host device 1. The host device 1 displays data of various monitoring points from the secondary controller 2-2 on a display as data of corresponding various logical points in the control logic diagram.

In this case, the upper-level device 1 treats the redundant controller 2 composed of the primary controller 2-1 and the secondary controller 2-2 as one controller, so that the primary controller 2-1 and the secondary controller 2-2 monitor the redundant controller 2. There is no need to change unique information such as point numbers, names, attributes, etc. Now, it is assumed that the primary controller 2-1 sends the data to the host device 1 with the unique information of the actual monitoring point as A.
Here, when an abnormality occurs in the primary controller 2-1, the control is switched to the secondary controller 2-2, but the secondary controller 2-2 sends the data to the higher-level device 1 with the unique information of the actual monitoring point set to A. The host device 1 handles both data from the primary controller 2-1 and data from the secondary controller 2-2 as data from one redundant controller 2.

However, in this monitoring and control system, when updating a program or the like stored in the primary controller 2-1 or the secondary controller 2-2, the primary controller 2-1 and the secondary controller 2-2 are simultaneously stopped. There must be.
That is, when the redundant controller 2 is stopped in an attempt to update a program or the like stored in the primary controller 2-1 or the secondary controller 2-2,
The primary controller 2-1 and the secondary controller 2-2 stop at the same time.

[0006] To solve such a problem, FIG.
A supervisory control system using non-redundant controllers 4 and 5 as shown in FIG. In this monitoring control system, the first non-redundant controller 4 is a primary controller, the second non-redundant controller 5 is a secondary controller, and a switching determination relay circuit 6, a switching relay circuit 7, and a switching relay 8 are provided. In the case of non-redundancy, data from various monitoring points collected by the primary controller 4 is sent to the host device 1, and in the case of redundancy, data from various monitoring points collected by the secondary controller 5 is sent to the host device 1.

That is, when there is no redundancy, the switching relay 8 is connected to the primary controller 4, and data from various monitoring points collected by the primary controller 4 is sent to the host device 1. The host device 1 displays data of various monitoring points from the primary controller 4 on a display as data of various corresponding logic points in the control logic diagram. In the case of redundancy, the switching determination relay circuit 6 detects this, and switches the switching relay 8 to the secondary controller 5 via the switching relay circuit 7. As a result, data from the various monitoring points is collected by the secondary controller 5, and the collected data from the various monitoring points is sent to the host device 1. The host device 1 displays data of various monitoring points from the secondary controller 5 on a display as data of corresponding various logical points in the control logic diagram.

[0008] In this case, the host device 1 separates the primary controller 4 and the secondary controller 5 from each other.
In order to handle as one controller, it is necessary to change the unique information such as the number, name, and attribute of the monitoring point between the primary controller 4 and the secondary controller 5.
Now, it is assumed that the unique information of the actual monitoring point (FX102 shown in FIG. 11) is A (FX102A), and the primary controller 4 sends the data to the host device 1. The host device 1 displays the data of the unique information A from the primary controller 4 on the display as the data of the corresponding logical point (flow rate (FX102)) in the control logic diagram.

At the time of redundancy, the control is switched to the secondary controller 5, and the unique information of the actual monitoring point is stored in B (F
X102B), and sends the data to the host device 1. The higher-level device 1 switches the display control program based on the determination information from the switching determination relay circuit 6 and converts the data of the unique information B from the secondary controller 5 to the corresponding logical point (flow rate (FX102)) in the control logic diagram. )
Is displayed on the display as the data of.

[0010]

However, in this monitoring control system, it is possible to update programs and the like stored in the controllers 4 and 5 without stopping the primary controller 4 and the secondary controller 5 at the same time. Since it is necessary to design and produce a screen display and a control operation in consideration of switching between 4 and 5, it is difficult to handle a display control program and monitoring points.

The present invention has been made to solve such a problem, and an object of the present invention is to prevent programs such as programs stored in individual controllers without simultaneously stopping a primary controller and a secondary controller. It is an object of the present invention to provide a monitoring control system which enables updating, does not require the design and production of a screen display and control operation in consideration of switching of these controllers, and facilitates handling of a display control program and monitoring points.

[0012]

In order to achieve the above object, the present invention comprises a first non-redundant controller and a second non-redundant controller rotor, and comprises a first non-redundant controller. Is the primary controller and the second
The non-redundant controller is used as the secondary controller. When non-redundant, the monitoring point data from the primary controller is displayed as logical point data on the display, and when redundant, the monitoring point data from the secondary controller is used as the logical point data. In a supervisory control system that displays on a display as a reference, a relation definition database that defines a relation between a monitoring point of a primary controller, a monitoring point of a secondary controller, and a logical point, and the relation definition database as a reference, and in a non-redundant state, The monitoring point data from the controller is displayed on the display as logical point data associated with the monitoring point, and when redundant, the monitoring point data from the secondary controller is displayed. As logical point data associated with the monitoring point is provided with a display control means for displaying on a display. According to this invention, at the time of non-redundancy, the related definition database is referred to,
The monitoring point data from the primary controller is displayed on the display as logical point data associated with the monitoring point. At the time of redundancy, the data of the monitoring point from the secondary controller is displayed on the display as the data of the logical point associated with the monitoring point with reference to the related definition database.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail based on embodiments. FIG. 1 is a diagram showing a main part of a monitoring control system according to an embodiment of the present invention. 10, the same reference numerals as those in FIG. 10 denote the same or equivalent components, and a description thereof will be omitted.

In this monitoring and control system, a relation definition database DB is stored in the CRT control device 1-1 of the host device 1.
C is provided. The relation definition database DBC defines the relationship between the monitoring points of the first non-redundant controller (primary controller) 4, the monitoring points of the second non-redundant controller (secondary controller) 5, and the logical points.

FIG. 2 shows an example of the data storage status in the relation definition database DBC. In FIG. 2, the point P indicates the number of the monitoring point of the primary controller 4, and the point S indicates the number of the monitoring point of the secondary controller 5.

[Creation of Association Definition Database] The association definition database DBC is created as follows. Create the related definition database creation screen GDB as shown in FIG.
Appear on the screen of T1-2. In this relation definition database creation screen GDB, the upper window W1
( "Alarm point 101-130 _- 55.sht") indicates the relevant definition database creation window of the controller 4,
The lower part of the window W2 ( "alarm point 101-130 _- 13
6. “sht”) indicates an associated definition database creation window of the controller 5. “AD0101” in the windows W1 and W2 is a logical point. Wind W
1 and W2 have exactly the same blocks, but operate on physically different controllers.

A desired logical point is selected and designated in the upper window W1 and the lower window W2, and a pop-up window PW appears. For example, when the logical point “AD0101” is selected and designated in the upper window W1, a pop-up window PW of “symbol part: AD0101” appears. “P / S designation (PS) in“ Common 2 ”of this pop-up window PW
ASSIGN) ”is specified. In the lower window W2, the logical point "AD
When “0101” is selected and specified, “Symbol parts: AD
A pop-up window PW “0101” appears. “P” in “Common 2” of this pop-up window PW
/ S designation (PSASIGN) "to designate" secondary ".

In the upper window W1, the logical point "AD0101" is selected and designated, and the "P / P" in the "common 2" of the pop-up window PW appearing therefrom
If "Primary" is designated in "S designation", "Bl"
ock0815 @ OP "is associated. In the lower window W2, the logical point "AD0101" is selected and designated, and when "P / S designation" in "Common 2" of the pop-up window PW that appears thereby designates "secondary", the logical point "AD0101" is obtained. Is associated with “Block50815 @ OP” as the point of S corresponding to

In the same manner, the P and S points corresponding to various logical points are associated on the screen to create the association definition database DBC. Screen display data is defined using logical points.

The number, name, and attribute of the logical point are defined in "common 1" (see FIG. 5) of the pop-up window PW. In this pop-up window PW, the input point number is the logical point number (AD010).
1), and input the name of the logical point (comment) as the input point name. Also, a physical address is input to the current value block No. parameter. This physical address is automatically generated based on the link information.

[Display of Data] The CRT control device 1-1 is provided with a display control means 1-11. The display control unit 1-11 refers to the association definition database DBC and, when non-redundant (when the P / S status described later is “1”), stores the monitoring point data (point database A) DBA from the primary controller 4. It is displayed on the screen of the CRT 1-2 as data (screen display data) of a logical point associated with the monitoring point, and when redundant (when a P / S status described later is “0”), monitoring from the secondary controller 5 is performed. The point data (point database B) DBB is displayed on the screen of the CRT 1-2 as logical point data (screen display data) associated with the monitoring point.

That is, the logical point "AD0101"
, When the P / S status is “1”, P
The data of the point "Block0815 @ OP" is displayed as the data of the logical point "AD0101" (steps 303 and 304 shown in FIG. 3), and when the P / S status is "0", the point of the block "Block50815 @ OP""
Are displayed as data of the logical point "AD0101" (steps 303 and 305 shown in FIG. 3).

[Generation of P / S Status] FIG. 6 shows an input state of a signal to the switching determination relay circuit 6. The switching determination relay circuit 6 receives a controller selection signal, a warning signal, an online / offline mode signal, and other signals from a pushbutton switch (not shown). The switching determination relay circuit 6 generates switching determination signals α and β based on these input signals and sends them to the controllers 4 and 5. The switching determination signals α and β are sent to the display control means 1-1 of the host device 1 via the controllers 4 and 5. The display control means 1-1 receives the switching determination signals α and β as actual inputs (step 301 shown in FIG. 3), and generates a P / S status based on the switching determination signals α and β (step 302).

For example, assuming that the switching determination signal α is sent as α1 and α2 and the switching determination signal β is sent as β1 and β2 from the switching determination relay circuit 6 as shown in FIG. FIG. 8 based on α2, β1, β2
The P / S status is determined with reference to the table shown in FIG. In this P / S status,
"1" indicates primary, "0" indicates secondary, and "x" indicates invalid.

Although the controller 4 is the primary controller and the controller 5 is the secondary controller in the above-described embodiment, it goes without saying that the controller 4 may be the secondary controller and the controller 5 may be the primary controller.

[0026]

As is apparent from the above description, according to the present invention, in a non-redundant state, the data of the monitoring point from the primary controller is associated with the monitoring point by referring to the relation definition database. In the case of redundancy, the data of a monitoring point from the secondary controller is displayed on the display as data of a logical point associated with the monitoring point with reference to the related definition database. It is possible to update programs and the like stored in individual controllers without stopping the secondary controller at the same time, and it is not necessary to design and manufacture screen displays and control operations that are conscious of switching these controllers. Handling of the point or the like is easy.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating a main part of a monitoring control system according to an embodiment of the present invention.

FIG. 2 is a diagram illustrating an example of a data storage status in an association definition database of the monitoring control system.

FIG. 3 is a flowchart illustrating a process of generating a P / S status and employing display data from a P point or an S point of a logical point based on the P / S status.

FIG. 4 “Common 2” in the related definition database creation screen and the pop-up window appearing on this screen
FIG. 6 is a diagram showing an input screen of the.

FIG. 5: “Common 1” in the related definition database creation screen and the pop-up window appearing on this screen
FIG. 6 is a diagram showing an input screen of the.

FIG. 6 is a diagram illustrating an input state of a signal to a switching determination relay circuit.

FIG. 7 is a switching determination signal α from a switching determination relay circuit.
It is a figure which shows the transmission situation of 1, (alpha) 2, (beta) 1, (beta) 2.

FIG. 8 is a diagram showing a switching determination signal α1, α2, β1, β2 to P
FIG. 10 is a diagram illustrating a table for obtaining a / S status.

FIG. 9 is a diagram showing a main part of a monitoring and control system using a conventional redundant controller.

FIG. 10 is a diagram showing a main part of a monitoring and control system using a conventional non-redundant controller.

11 is a diagram illustrating a data display operation in the monitoring control system illustrated in FIG.

[Explanation of symbols]

1: Upper device, 1-1: CRT control device, 1-2: CR
T, DBA: Point database A, DBB: Point database B, DBC: Related definition database, D
BD: screen display database, 3: input / output unit (real I /
O), 4 ... first non-redundant controller (primary controller), 5 ... second non-redundant controller (secondary controller), 6 ... switching determination circuit, 7 ... switching relay circuit, 8 ... switching relay, GDB: related definition database creation screen, W1, W2: related definition database creation window, PW: pop-up window.

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) G06F 11/30 G06F 11/32 G06F 11/20 310

Claims (1)

(57) [Claims] A first non-redundant controller, a second non-redundant controller rotor, a first non-redundant controller as a primary controller, a second non-redundant controller as a secondary controller, and a non-redundant controller. In a monitoring control system that displays data of monitoring points from the primary controller on the display as data of logical points when redundant, and displays data of monitoring points from the secondary controller on the display as data of logical points when redundant, A relation definition database defining the relation between the monitoring point of the primary controller, the monitoring point of the secondary controller, and the logical point; and referring to the relation definition database as a reference, the monitoring point from the primary controller when there is no redundancy. The data of the monitoring point is displayed on the display as the data of the logical point associated with the monitoring point, and when redundant, the data of the monitoring point from the secondary controller is displayed on the display as the data of the logical point associated with the monitoring point A monitoring control system, comprising: