JPS61180396A - Monitor controller - 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 application field] The present invention relates to a plant monitoring and control device.

[Conventional technology]

This type of device is [Measurement technology] (pages 193-19
9, published September 25, 1981, publisher: Nippon Kogyo Shuppan).

FIG. 4 is a block diagram showing a conventional monitoring/control device of this kind, in which 1 is a CRT and 2 is a CRT controller. CRT controller 2 has screen memory 3, CP
U4 includes a program memory 5 for the CPU 4.

6 is a plant controller (or computer), 5
is a keyboard, and 6 is a process controlled by the plant controller 6.

FIG. 5 shows the internal configuration of the screen memory 3, and a memory area for one screen stores commands for requesting the plant controller 4 for fixed screen display data and variable screen display data. In this configuration, when the screen selection for one CR7 screen is executed by the operator's operation of the keyboard 7, the CP of the CRT controller 2
U4 accesses the screen memory 3, and first, the selected 1
Display fixed screen display data for a screen on CRTl0
Next, a command requesting variable screen display data related to the fixed screen display data is sent to the plant controller 4.
Transfer to. The plant controller 6 fetches this command, collects the corresponding data from the bus process 8, and retransmits this to the CRT controller 2 as screen information. When the CRT controller 2 receives this process data, it performs appropriate processing and displays it on the CRTI.

[Problem that the invention seeks to solve]

Since the conventional device is configured as described above, the CRT
The number of screens and process data points that can be displayed on I is limited by the capacity of the screen memory 3, and even for screens of the same format (the fixed screen remains the same, but the data to be displayed is different), the screen memory for each screen is limited. Since it is a one-type, one-screen system that requires one screen, there is a problem in that a large capacity screen memory is required in order to display all the process data collected by the plant controller.

This invention was made to solve the above problem,
An object of the present invention is to obtain a plant monitoring and control device capable of displaying all of the process data possessed by a plant controller using a small-capacity screen memory.

[Means to solve the problem]

In order to achieve the above object, the present invention provides a screen memory in the plant controller, and the screen memory has a plurality of pieces of information related to one screen memory of the CRT controller, and process data is stored based on the information. It is configured to be collected.

[Effect]

In this invention, since a plurality of screens can be configured for one screen memory of a CRT controller, a type 1 type N screen display can be realized.

〔Example〕

FIG. 1 is a block diagram showing one embodiment of the present invention,
A page command generator 10 is provided in the CRT controller 2.
This device is different from the conventional device shown in FIG. 4 in that a screen memory 11 and a CPU 12 for processing information in the screen memory are provided in the plant controller 6. 13 is CPU1
2 program memory.

FIGS. 2 and 3 show the internal structures of the screen memories 3 and 11, respectively.

When screen selection is executed by the operator's operation of the keyboard 8, the CRT controller 2 stores the screen memory 3.
It is the same as in the conventional device that the fixed screen display data for one selected screen is displayed on the CRTI. Next, a page command corresponding to the selected screen display data is generated by the page command generator 10, and this page command (screen number information) is transferred to the plant controller 6. The plant controller 4 fetches this page command and accesses the screen memo IJ11. This screen memory 11 is a table, and as shown in FIG. 3, a plurality of keywords (for one page of the screen memory 3) each associated with process data are stored therein. The plant controller 6 uses this keyword to collect process data and transfers it to the CRT controller 2. CRT2
processes the transferred process data as usual and displays it on the CRT.
Display it on I.

Therefore, according to this embodiment, it is possible to display a plurality of screens using one screen of the screen memory 3.

〔Effect of the invention〕

As explained above, in this invention, a screen memory is also provided in the plant controller, and this screen memory is used as one screen memory on the CRT controller side to collect process data from multiple points, thereby realizing a one-type N-sheet method. Therefore, it is possible to display all of the process data owned by the plant controller on the CRT without having to provide a large capacity screen memory.

[Brief Description of the Drawings] Fig. 1 is a block diagram showing an embodiment of the present invention, Figs. 2 and 3 are diagrams showing the configuration of the screen memory in the above embodiment, and Fig. 4 is a block diagram of a conventional plant. FIG. 5 is a block diagram showing the monitoring and control device, and is a diagram showing the configuration of the screen memory in the above-mentioned conventional example. In the figure, 1-CRT, 2-CRT controller, 3.11-one screen memory, 6-plant controller, 10-page command generator. In addition, in the figures, the same reference numerals indicate the same or corresponding parts.

Claims (1)

[Claims] A plant monitoring and control device comprising a CRT controller that reads display data from a screen memory and displays it on a CRT, the CRT controller interfacing with a plant controller to collect and transfer process data related to the display data, the plant controller A supervisory control device comprising a screen memory, the screen memory having a plurality of pieces of information read out in correspondence with the display data, and each piece of information being associated with the process data to be collected. .