JPS61150047A - Remote supervisory control device - Google Patents

Abstract

PURPOSE:To use effectively a main memory area by providing a sub-memory. CONSTITUTION:A sub-memory section C5 is provided in addition to a main memory section A6 and a program of each task is stored in the sub-memory. The sub-memory consists of a nonvolatile memory or the like. When a program logic of the main memory section A6 desires to refer to a table of the sub- memory C5, a table address of a memory section D9 desired to be read is set to an address introduction area of a sub-input interface section D5. A sub microprocessor D10 uses the sub input interface section D5 to read the content of the address introduction area, and the content of the table in several BYTE several tens of BYTEs is set to the data introduction area of a sub-output interface section D6 while taking the requested address as a head. The program logic of a main memory section A6 reads it.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a remote monitoring and control device, and particularly to a monitoring and control processing unit in a remote monitoring and control center that supports a plurality of controlled station devices.

[Technical Background of the Invention] FIG. 2 is a diagram showing the configuration of a monitoring control processing unit of a conventional remote monitoring and control device. The supervisory control processing unit A
1 has a large amount of monitoring and control information, and the microprocessor section A
Since the memory capacity that can be accessed by 2 is insufficient, a plurality of memory units 6 to A1o are used to store the memory unit control program and programs divided for each task, respectively. The memory section control program uses the operating system to check where each program is stored in the plurality of memory sections from 6 to A1o, before starting the programs divided for each task, and utilizes the corresponding memory section. , a program is started that is divided for each task.

The input interface section A3 accepts input from the operation switch.
Further, the output interface section A4 is used for lamp display output and LED display output.

Among the plurality of memory sections As''Ac, each of the memory sections A7 to 6 other than 6 stores the operating system and the memory section control program.
As all use the same memory space.

[Problems with the Background Art] FIG. 3 shows a memory map of a conventional memory section, but when the same memory space is switched and used as in the memory sections A7 to A1o, the memory space used in the memory sections A7 to A1o is The memory area that cannot be used is extremely wasted, and the use of a plurality of memory sections A7 to A1o increases costs.

In addition, since the same memory space is used, program creation, debugging, and maintenance are extremely difficult.

[Object of the Invention] The present invention has been made in order to solve the above-mentioned problems, and an object of the present invention is to provide a remote monitoring and control device in which memory expansion and memory contents can be easily changed.

[Summary of the Invention] According to the present invention, by using a sub-memory section, a memory area can be used effectively without using a plurality of memory sections.

[Embodiments of the Invention] Examples will be described below with reference to the drawings. FIG. 1 is a configuration diagram of an embodiment of a supervisory control processing unit according to the present invention.

In FIG. 1, only the configurations of memory sections A6 and C5 are different, and the rest is the same as the conventional example shown in FIG. As for the structure of the memory sections A6 and Cs, the conventional multiple memory sections 6 to Aa have been combined into one, and a sub-memory section C5 has been added, but this sub-memory section C5 has a built-in sub-microprocessor. There is.

For the sake of explanation below, the memory section 6 will be referred to as the main memory section A6 (the memory section A6 and the main memory section 6 have the same meaning).

First, when it is desired to refer to the table in the sub-memory section C5 in the program logic 6 to the main memory section, the table address of the memory section D9 to be read is set in the address introduction area of the sub-input interface section D5. The sub-microprocessor D10 reads the contents of the address introduction area in the sub-input interface section D5, and, with the requested address at the beginning, transfers the contents of the table of several bytes to tens of bytes to the data introduction area of the sub-output interface section D6. Set to .

In the program logic 6 for the main memory section, necessary data is read from the sub output interface section D6. As a result, the conventional memory section A shown in FIG.
Instead of reading the contents of the memory by utilizing any of the memories 7 to Aη, necessary data is fetched from the sub-memory section C5 and processed.

[Effects of the Invention] As explained above, according to the present invention, the number of memory sections can be reduced compared to the conventional art, and costs can be suppressed, and the memory of the sub-memory section can be made non-volatile memory. , it is possible to provide a remote monitoring and control device in which memory contents can be changed very easily.

[Brief explanation of the drawing]

FIG. 1 is a configuration diagram of an embodiment of a supervisory control processing unit applied to a remote monitoring and control device according to the present invention, FIG. 2 is a block diagram showing the configuration of a conventional supervisory control processing unit, and FIG. 3 is a block diagram of a conventional supervisory control processing unit. FIG. 3 is a diagram showing a memory map of the control processing unit. A1... Supervisory control processing unit A2... Microprocessor section A3... Input interface section A4... To output interface section 6-A10... Memory section C5... Sub memory section D5... Sub input interface section D6...Sub output interface section D9...Memory section Dlo...Sub microprocessor (7317) Agent Patent attorney Kensuke Norichika (and 1 other person) Figure 1 A1 Figure 2 Zu1 3rd bed

Claims (1)

[Claims] A remote monitoring and control device that includes a microprocessor, an input/output interface unit, and a memory unit, and processes input information by starting a control program and a program for each task using an operating system,
A remote monitoring and control device characterized in that a sub-memory section with a built-in microprocessor is provided in addition to a main memory section.