JP3374396B2 - Distributed 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 distributed control system used for controlling operation of a large-scale plant such as the petrochemical industry, and more particularly to improvement of data input operation.

[0002]

2. Description of the Related Art The applicant of the present invention has disclosed, for example, Japanese Unexamined Patent Publication No.
No. 5, for example, proposes a distributed control system. FIG. 3 is a configuration block diagram of a conventional distributed control system. In such a device, the screen 10 is
It is in charge of the machine interface and controls the operation and monitoring of the controlled system. The data input window 20 is displayed on a part of the screen 10 and is used for inputting process data. Data item 25
Defines the type of data to be input and includes a set point SV, an operation amount MV, a process value PV, and the like.

In the apparatus configured as described above, one of the following operations is performed to change the data item name input from the data input window 20. Invoke the tuning panel and select the data item to change from the list of data. Press the data item change key of the operator keyboard used for the input operation of the screen 10, and input the data item name to be changed from the keyboard.

[0004]

However, according to the conventional work, since the process data is protected for each displayed tag and each data, the data is input even if the data item name is changed. There are things you can't do. For example, security is realized by a user having a certain level of ID and a physical key, and there is data that can be changed only by a user who has the authority to change. A tag is a unit of an indicator or controller, such as a PID.
One tag is assigned to each control loop such as control and each detection end such as a thermometer.

Further, if the operation method of directly typing in the data item name is used, there is a problem that the probability of making an input error is high and the operator must remember the required data item name.
In addition, data that can be changed from all data item names
It was difficult to identify the item name. The present invention solves the above-mentioned problem, and when the data item name is changed,
Input data that can be changed by reducing typing errors
It is an object of the present invention to provide a distributed control system that can be easily identified and that prevents mistakes during input work .

[0006]

The present invention is a distributed control system having the following configuration. (1) In a distributed control system having a human-machine interface screen that controls the operation and monitoring function of a controlled system, a data input window displayed on the screen and for inputting process data, and a data item name selection The data screen displayed on the screen
Menu window that displays the system name, input means to select the data item name from this menu window, and when the operation to change the data item name is notified,
Data entry to notify to display menu window
By the force processing unit and the notification from this data input processing unit,
You can change the data item from all the data item names.
Data item name to display the system name in the menu window
A change processing unit, and the menu unit is operated by the input means.
If you select the data item name from the index,
Select the item name change processing unit to the data input processing unit
The notified data item name is notified, and the data input processing unit
The selected data item name is displayed in the menu window.
A distributed control system, characterized in that Shimesuru. (2) All the data item names are the process data
(1), which is related to tags to which
Distributed control system. (3) The changeable data item name is read-only.
Data, tags, data security check
It can be changed by
Distributed control system. (4) The input means is a keyboard or pointing /
A distributed system according to (1), which is a device
Your system.

According to the configuration of the present invention, the data input window 20 is a window for inputting process data. The menu window 30 is a window for selecting one or more from the displayed data item name candidates and can be called up on the screen at any time. The input means 40 selects a data item name from the menu window.
Since the data item name to be selected is displayed in the menu window 30, the number of input errors that are likely to occur when the data item name is input character by character is reduced. In addition, the menu window can
Only the item name is displayed to prevent mistakes during input work.
It

[0008]

DETAILED DESCRIPTION OF THE INVENTION The present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention. Note that, in FIG. 1, those having the same functions as those in FIG. In the figure,
Menu window 30 is a window to select one or more from the displayed data item name candidates.
Can be called on the screen at any time. The input means 40 is for selecting a data item name from the menu window, and a keyboard or pointing device is used.

An operation procedure for changing the data item name in the device configured as described above will be described below. The operator calls the data input window 20 on the screen 10 by a data input window calling operation. When changing the data item name input in the data input window 20, the call button of the menu window 30 for changing the data item name on the operator keyboard 40 is pressed. Then, the menu window 30 is called over the data input window 20. To change the data item name, the data item name to be changed is selected from the menu list of item names in the menu window 30 with the cursor key on the operator keyboard 40 or the mouse.

FIG. 2 is an explanatory diagram of a process for changing the data item name, which will be explained in order by dividing into items. When the call button of the menu window 30 for changing the data item name of the operator keyboard 40 is pressed, the operator / keyboard management unit 42 receives a key event. The operator / keyboard management unit 42 notifies the data input processing unit 44 of the data item name change operation.

The data input processing unit 44 notifies the data item name change processing unit 46 to display the menu window 30 for changing the data item name. The data item name change processing unit 46 acquires a changeable data item name from all the data item names of the tags to which the process data belongs, and displays it in the menu list in the menu window 30. When a data item is selected in the menu window 30, the data item name change processing unit 46 notifies the data input processing unit 44 of the changed data item name.
The data input processing unit 44 displays the changed data item name.

Here, the changeable data item name means data that is not read-only (read only),
It is data that can be changed by security check of tag data. Preferably, if only the data item names that can be changed are displayed in the menu list in the menu window 30, there will be no error in the input operation.

In the above embodiment, the operator keyboard 40 is used for input work, but the present invention is not limited to this, and a touch panel for performing input work using the screen 10 is adopted. It doesn't matter.

[0014]

As described above, according to the present invention, the data input window inputs the process data, the menu window selects one or more from the displayed data item name candidates, and the input means selects the menu. Since the data item name is selected from the window, the data item name to be selected is displayed in the menu window.Therefore, when inputting the data item name character by character as in the conventional work, there are many input errors. Etc. will decrease. In addition, in the menu window, all data
From the item names, select only the data item names that can be changed.
indicate. Therefore, the data that can be entered becomes clear,
It is possible to prevent errors during input work.

[0015] In this case, as in claim 2, all data item name, when as for the tag belongs the process data, it becomes clear in the range of a menu list to be displayed in the menu Windu. Furthermore, as according to claim 3, the data item names that can be changed, data or not read-only, when it can be changed by the security check of the tag and data ranges of the data item name is clarified. When the input means is a keyboard or a pointing device as in the fourth aspect , a general-purpose product can be used and the system can be inexpensively constructed.

[Brief description of drawings]

FIG. 1 is a configuration block diagram showing an embodiment of the present invention.

FIG. 2 is an explanatory diagram of a process of changing a data item name.

FIG. 3 is a configuration block diagram of a conventional distributed control system.

[Explanation of symbols]

10 screens 20 Data input window 30 Menu Windu 40 Input means

Claims (4)

(57) [Claims] 1. A distributed control system having a screen of a human-machine interface that controls an operation and monitoring function of a controlled system, and a data input window which is displayed on the screen and into which process data is input. , is displayed on the screen at the time of selection of the data item name, Day
A menu window that displays the data item name, an input means for selecting the data item name from this menu window, and a menu when the data item name change operation is notified.
Data entry area to notify you to display the window
By the notification from the processing section and this data input processing section, all data
From the system name, select the data item name that can be changed.
-Data item name change processing part displayed in window
And, and the menu window is
Select the data item name to change the data item name
The data processing unit is connected to the data processing unit selected by the update processing unit.
The item name is notified and the data input processing section
A distributed control system that displays the item name in the menu window . 2. The process names of all data items
2. A tag to which data belongs, according to claim 1.
The distributed control system described. 3. The changeable data item name is read
Security for non-commercial data, tags and data
Claims that can be changed by checking
1. The distributed control system according to 1. 4. The input means is a keyboard or a pointing device.
2. The device according to claim 1, which is a
Distributed control system.