JPH02181232A - Loading system - Google Patents

Abstract

PURPOSE:To restore the contents of a main storage device even if loading is executed erroneously by providing a secondary file on an auxiliary storage device, storing the contents of the main storage device in the secondary file, and thereafter, loading a primary file to the main storage device. CONSTITUTION:An FA controller 1 receives an instruction of loading from a terminal equipment 6 by an operator and stores the contents of a main storage device 2 of the present in a secondary file 5 of an auxiliary storage device 3. Subsequently, a primary file 4 of the device 3 is loaded to the device 2, the contents of the file 4 are displayed on the terminal equipment 6, and whether it is allowed to load the file 4 or not is decided by confirming the contents displayed on the equipment 6. In this case, when loading is executed erroneously, the operator instructs to load the file 5 to a controller 1 from the equipment 6, and the controller 1 loads the contents of the device 2 before loading stored in the file 5 to the device 2. If loading is correct, the contents of the device 2 come to remain the contents of the file 4. In such a way, even if loading is executed erroneously, the contents of the device 2 can be restored.

Description

[Detailed description of the invention] [Industrial application field] This invention relates to a data loading method.

[Conventional technology]

The contents of the main memory may be due to a failure of the FA controller.

Since it may be destroyed due to a power cut, etc., at the end of the FA controller work, the main memory storage amplifier is transferred to an auxiliary storage device such as a magnetic tape device or a 63-degree disk device, and the contents of the main memory device are If it is destroyed, back it up, load the contents of the main memory, and resume work.

An overall configuration diagram of a conventional backup memory loading method is shown in FIG. 3 and will be described.

In the figure, 12) is a main memory L+t+ is an F'A controller having a main memory 12), (4) is a primary file that stores the contents of the main memory, and (3) is a primary file (4). The auxiliary storage device (6) is a terminal device.

Next, the operation will be explained.

The main storage device 12) is backed up by the auxiliary storage device (3).
is stored in the primary file (4). The operator issues a loading instruction from the terminal device (6) to the FA controller (1), and upon receiving the instruction, the 7tlPA controller (
1) Read the data of the primary file (4) and write it to the main storage device (2).

[Problem to be solved by the invention]

In the conventional loading method, when a primary file is loaded, the contents of the main memory device are rewritten to the contents of the primary file, so if the primary file is loaded by mistake, the contents of the main memory device before loading are rewritten and the work is delayed. The problem is that it cannot be restarted.The present invention has been made to solve the above-mentioned problems, and its object is to provide a loading method that can restore the contents of the main memory.

[Tth means to solve the problem]

The loading method according to the present invention is one in which a secondary file is provided in an auxiliary storage device.

[Effect]

In this invention, by storing the contents of the main memory in a secondary file and then loading the primary file into the main memory, it is possible to restore the content to the main memory before loading.

〔Example〕

An embodiment of the present invention will be described with reference to the drawings. In FIG. 1, (1) is an FA controller having a main storage device;
(2) is the main memory, (4) is the primary file that stores the contents of the main memory, (5) is the secondary file that stores the main memory before loading, (3) is the primary file 14
) and a secondary file (5).

Next, the operation will be explained with reference to FIG.

FIG. 2 is a flow chart showing one embodiment of the present invention.

In step (9), the FA controller (1) receives a load instruction from the terminal device (6) from the operator and stores the current main memory jlf2 in the template value.
1 is stored in the secondary file (5) of auxiliary storage device #(3).

Next, in step U, the primary file (4) of the auxiliary storage device (3) is loaded into the main storage device 12). In step 02, the contents of the primary file are displayed on the terminal device (6), and in step 03, the operator confirms the contents displayed on the terminal device (6) and determines whether it is OK to load the primary file (4). . If t is loaded incorrectly, the operator must load the terminal device '1t (6
) instructs the FA controller fil to load the secondary file (5), and the FA controller (1) transfers the contents of the main storage device (2) stored in the secondary file (5) and before loading to the main storage device 12. ), and if the load is correct, the contents of the main memory (ft12) will be the primary file (4).
The contents will remain the same. In step a9, the contents of the secondary file (5) that are no longer needed are deleted.

〔Effect of the invention〕

As described above, according to the present invention, a secondary file is provided in the auxiliary storage device to store the contents of the main memory device before loading, so even if the contents are loaded by mistake, the contents of the main memory device can be restored. be.

[Brief explanation of the drawing]

FIG. 1 is an overall beak configuration diagram of an embodiment of the loading method according to the present invention, and FIG. 2 is a flowchart showing the operation of the present invention.
FIG. 3 is an overall configuration diagram of a conventional loading method. In the figure, flll is the FA controller, C2) is the main storage, (3) is the auxiliary storage, (4) is the primary file,
(5) is a secondary file, and (6) is a terminal device. In FIG. 9, the same reference numerals indicate the same or corresponding parts. Figure 2 Masao Oiwa

Claims (1)

[Claims] When loading a primary file from the auxiliary storage to the main storage in an FA controller that has a main storage and an auxiliary storage, the data in the main storage is stored as a secondary file in the auxiliary storage, and then the primary file is loaded. A loading method characterized by: