JPH0432901A - Plant control method - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention is directed to
This invention relates to a plant control method used for plant operation in an industrial system that performs operations, monitoring, control, etc. using an RT screen.

[Prior art] Figure 4 shows, for example, Hitachi Keiki Journal V published in 1987.
FIG. 4 is a diagram for explaining an example of the conventional plant control method described in 1.13, and this FIG. In FIG. 4, only the touch key 2 is shown below the written part of the CRT screen 1, and its operation state and display state are locked, locked, The unlocked state and switch operating state are shown in this order.

As shown in FIG.
By touching this touch key 2, control commands to the plant can be input.

To explain its operation in more detail, the CRT screen (
The plant is controlled by operating the touch keys 2 set in the graphic screen) 1. First, the touch keys 2 for control are equipped with a lock function to prevent erroneous operation. As shown in FIG. 4, the first touch operation releases the locked state, and the next touch operation starts actual plant control.

Note that when the touch key 2 is in the locked state, a lock state display mark 2a is displayed as shown in FIG. 4, and when the lock state is released, the display of this mark 2a disappears.

Furthermore, when the switch is activated by a second touch operation, the display portion of the touch key 2 undergoes a display change such as blinking.

[Problems to be Solved by the Invention] Since the conventional plant control method is performed as described above, all control commands for the plant are input by touch operations from the touch keys 2 on the CRT screen 1. This touch operation is performed by simply touching the CRT screen 1 lightly, so the operation is extremely simple, but there is a problem in that it is prone to operational errors, and erroneous operations due to touch operation errors are likely to occur during plant control.

This invention was made in order to solve the above-mentioned problems, and provides a plant control method that reliably prevents the occurrence of erroneous operations due to touch operation mistakes and enables highly reliable plant control. With the goal.

[Means for Solving the Problems] A plant control method according to the present invention allocates a selection operation area on a CRT screen as a touch area of a touch panel, and after inputting a control command to the plant by a touch operation on the CRT screen. , the final execution command of the control command is input by operating a hard-wired switch.

[Function] In the plant control method of the present invention, all control commands are not input by touch operations from the touch area on the CRT screen, and only the final execution command input at the end is input by hard-wired switches that do not involve touch operations. It is input by the operation.

This makes it possible to select the touch area on the CRT screen by touch operation, and supports diversification of control.
Since only the tM-execution command is issued by the hard wire tossinch operation, it is possible to reconfirm the input by the touch operation up to that point, and it is possible to prevent the occurrence of erroneous operations due to diversification.

[Embodiments of the invention] An embodiment of the present invention will be described below with reference to the drawings.

First, the overall configuration of an industrial system to which the method of the present invention is applied will be explained with reference to FIG.

In Fig. 2, 3 is an operator's station for operators to control and monitor the plant, 4 is a field control station that controls the opening and closing of valves, etc. for plant control, and 5 is a field control station for controlling and monitoring the plant. This is a data way for transmitting control command signals to the field control station 4.

FIG. 3 shows the configuration of the operator's station 3 that actually receives operations based on the method of the present invention. This third
In the figure, 1 is a C that displays a graphic screen showing the plant status, etc. in order to control and monitor the plant.
RT screen, 2 is a touch key (touch panel touch area) assigned to the selection operation area on this CRT screen 1 and used to select various controls, 6 is a key switch panel in which key switches for performing various operations are arranged. , 7 is an execution key (hardwired switch) that is operated when inputting a final execution command, as will be described later.

The control procedure according to the present invention performed from the operator's station 3 to the field control station 5 in the system configured as described above will be explained below with reference to FIG. In addition, in FIG. 1, the switch to be operated (touch key 2
．． The execution keys 7) are shown in the order of their operation.

First, in a control operation on the CRT screen 1 on which a graphic screen is displayed, the operator selects a desired control (in this example Then, select the reaction process operation start control).

As a result of this touch operation, the area of the selected touch key 2 becomes in a flicker display state, as shown in FIG.

Next, the execution key 7 (hardwired switch configuration) for performing the final operation (final execution command input) is illuminated or an appropriate sound is generated.
Prompts the operator to perform the final execution operation.

Accordingly, the operator inputs the final execution command by pressing the hardwired execution key 7 while making a final confirmation of the control to be executed, and the desired control command is sent to the field via the dataway 5. Transmit to control station 4. The field control station 4 that receives the control command executes control over the plant.

As described above, according to the method of this embodiment, only the final execution command is input using the hardwired execution key 7 so that the final confirmation of the control operation for the field control station 4 on the CRT screen 1 can be performed. , the occurrence of erroneous operations due to touch operation errors is reliably prevented, and highly reliable plant control can be achieved.

[Effects of the Invention] As described above, according to the present invention, after selective control of the plant is performed by touch operation from the touch area on the CRT screen, only the final execution command is input by operating the hard-wired switch. As a result, when operating a hard-wired switch, it is possible to confirm the final input by touch operation, and it is possible to ensure that erroneous operations due to touch operation errors occur, thereby achieving highly reliable plant control.

[Brief explanation of drawings]

FIG. 1 is an operation explanatory diagram for explaining the steps of a plant control method according to an embodiment of the present invention, FIG. 2 is an overall configuration diagram showing an industrial system in this embodiment, and FIG. A configuration diagram showing the operator's station,
FIG. 4 is an operational diagram for explaining an example of a conventional plant control method. In the figure, 1 - CRT screen, 2 - touch keys (touch area), 7 - execution key (hardwired switch)
. In addition, in the figures, the same reference numerals indicate the same or corresponding parts. Figure 1

Claims (1)

[Claims] In a plant control method for monitoring and controlling a plant using a CRT screen, a selection operation area on the CRT screen is allocated as a touch area of a touch panel,
A plant control method, comprising inputting a control command to the plant by touching the CRT screen, and then inputting a final execution command of the control command by operating a hard-wired switch.