JPH0736729A - Restoration supporting device - Google Patents

Abstract

PURPOSE:To easily grasp the cause of a fault, a treatment and a restoration procedure, to substantially reduce restoration time, to eliminate the errors of an operation and the omission of the operation and to efficiently perform a restoration operation. CONSTITUTION:This restoration supporting device is provided with a reception processing means 1 for receiving the diagnostic information of a failure substrate when the failure of an electronic equipment is generated, a diagnostic information sampling means 2 for sampling the received diagnostic information and storing them for the respective kinds of the substrates, a diagnostic information analysis means 3 for investigating the cause from the sampled diagnostic information and displaying the cause of the fault and the treatment at a display part 4, a restoration procedure preservation means 5 for preserving the restoration procedures corresponding to the various kinds of the causes of the fault and the treatments, a program preservation means 7 for preserving the program of the electronic equipment and a restoration procedure jugement processing means 6 for reading the pertinent restoration procedure from the restoration procedure preservation means 5 based on the cause of the fault and the treatment, displaying it at the display part 4 and performing an instruction for down-loading the program of the program preservation means 7 to the electronic equipment when a program loading is required from the restoration procedure.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a general industrial facility, for example, when a malfunction occurs in an electronic device such as a programmable controller, a display device, an input / output device, a data transmission device or the like which constitutes a control device of a steel rolling facility or the like. The present invention relates to a recovery support device used for recovery work, and particularly to a recovery support device that analyzes a cause of failure of an electronic device and displays a necessary recovery work procedure to perform recovery work in a short time without error.

[0002]

2. Description of the Related Art Generally, electronic devices such as a programmable controller, a display device, an input / output device, and a data transmission device are used as a control device for controlling a steel rolling mill. FIG. 10 is a diagram showing the configuration of the control device, in which an input / output device PIO, a programmable controller PC, and a display device CRT are connected on a data transmission device LAN, and the controller PC performs predetermined arithmetic processing according to a program. The data is executed, the machine is controlled via the input / output device PIO, and the control result based on the data of the arithmetic processing result is displayed on the display device CRT.

By the way, conventionally, when a failure occurs in an electronic device during operation of equipment, as shown in FIG.
Controller PC, display device CRT,
While displaying the constituent boards of the input / output device PIO and the like, in order to clarify which board has a failure, only the location of the failure board is displayed by color change.

Therefore, when a defective board is identified from the color-changed display, the maintenance staff connects the defective board CARD with an engineering tool EWT capable of collecting diagnostic information as shown in FIG. 12, and collects the diagnostic information. 13 and 14 are examples of collected data of diagnostic information by the engineer tool EWT. Therefore, the maintenance staff investigates the cause by the human system from the diagnostic information expressed in troublesome hexadecimal such as the collected data example, determines the recovery correspondence, and takes action.

[0005]

However, in the above-mentioned restoration support device, the maintenance staff connects the engineering tool EWT and collects diagnostic information for a rare malfunction of the electronic device. Forgetting the operation method of collecting information, and often forgetting the analysis method even when collecting diagnostic information, it takes time for recovery work.

On the other hand, with respect to the board defect of the electronic device,
Replacing the defective board with a spare board is the quickest way to recover, but at this time, it is necessary to set various switches on the spare board to be the same as the defective board, and also to load a program and perform replacement. There is also a board, and when replacing the board, we deal with it by referring to the instruction manual, drawings, etc. In this situation, too, much time is spent on restoration work.

There are hundreds of causes for diagnosing electronic devices, and there are dozens of types of boards. Problems with these boards rarely occur, and maintenance personnel have little experience in recovery work. Etc. is one of the causes of delaying recovery.

Further, when the program is loaded, it is downloaded from the floppy disk in which the program is stored to the board through the engineering tool EWT. However, the loading operation method may be wrong.

In addition, considering that board defects usually occur infrequently, when a defect actually occurs, maintenance personnel often do not differ much from those of beginners, and it is not possible to determine the cause or make an erroneous judgment. Or spend a lot of time on recovery work.

The present invention has been made in view of the above-mentioned circumstances, and automatically collects what was conventionally used by a maintenance staff to connect an engineer tool to a defective board and collect diagnostic information by an unfamiliar operation. An object of the present invention is to provide a recovery support device which analyzes diagnostic information in a system and automatically analyzes and investigates what has been investigated, displays the cause and action, and promptly responds to the recovery.

Another object of the present invention is to automatically perform a recovery procedure instead of the maintenance person having replaced the defective substrate and set the switches with reference to an instruction manual or a drawing. Is provided on the screen to provide a recovery support device that enhances the efficiency of board replacement work.

Still another object of the present invention is to provide a recovery support device which regularly updates and saves the latest program to prevent a maintenance staff from mistakenly downloading a past program by mistake. .

[0013]

In order to solve the above-mentioned problems, the invention according to claim 1 provides a recovery support device for recovering a failure of a target electronic device connected to a data transmission device, Upon occurrence of a malfunction of the electronic device, after receiving the malfunction data of the target electronic device sent via the data transmission device, the diagnostic information of the board related to the malfunction target electronic device is transmitted via the data transmission processing means. The data reception processing means for requesting and receiving the diagnostic information of the board related to the defective electronic device sent on the basis of the request and the diagnostic information received by the data reception processing means are collected. Diagnostic information collecting means to store for each type of board constituting the target electronic device, and the diagnostic information collected by this diagnostic information collecting means is analyzed to cause Investigation and a recovery support system provided with the diagnostic information analyzing means for displaying the treatment and its failure due to the restoration support screen display unit.

The invention corresponding to claim 2 is the constituent element of the invention according to claim 1, in which a restoration procedure is newly saved in advance based on various causes and measures, and a restoration procedure storing means, The recovery procedure is determined from the program storage means for storing the program collected from the faulty electronic device, the failure cause and the action analyzed by the diagnostic information analysis means, and the corresponding recovery procedure is read from the recovery procedure storage means. The recovery procedure determination processing means for displaying the program on the recovery support screen display section and for instructing to read the relevant program from the program storage means and download it to the malfunction target electronic device when the program needs to be loaded from the recovery procedure. It is a recovery support device with and added.

Further, in the invention corresponding to claim 3, in the constituent elements of the invention according to claim 1, a program storage means for newly storing a program newly collected from the faulty electronic device and a latest program are always provided. To save
From the data transmission processing means, program update request means for periodically requesting an update program for various boards to the target electronic device, data transmission processing means for transmitting request data of the update program by the program update request means, and the data transmission processing means. And a program update processing means for storing the update program sent from the target electronic device side via the data transmission device by the data receiving processing means in the corresponding area of the program storing means However, the recovery support device enables the latest program to be read and loaded from the program storage means during the recovery processing by the recovery procedure determination processing means.

[0016]

Therefore, according to the invention corresponding to claim 1, by taking the above-mentioned means, when the malfunction of the target electronic device occurs, the diagnostic information related to the substrate of the malfunction target electronic device is transmitted by the data transmitting / receiving means. After taking in, it is stored in the storage means of the diagnostic information collecting means for each type of substrate. Thereafter, the diagnostic information analysis means analyzes the collected diagnostic information to investigate the cause, and displays the failure cause and action on the recovery support screen display section, so that even a beginner can identify the cause and action. Can be easily grasped, and restoration equipment can be prepared early.

Next, the invention corresponding to claim 2 has the same operation as that of the invention of claim 1, and a specific restoration procedure of the restoration equipment on the restoration support screen display portion based on the cause of failure and the treatment. Is displayed, it is possible to carry out the restoration work in a short time without any error or omission by proceeding with the work according to the restoration procedure.

Further, in the invention according to claim 3, the latest program is periodically updated and saved, so that even if the maintenance staff is a beginner, the old program will not be accidentally loaded and the latest program will always be saved. Can be used to proceed with the recovery procedure.

[0019]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing a basic configuration of a system to which a restoration support device according to the present invention is applied.

This control device is, for example, a data transmission device L.
Input / output device PI for inputting / outputting data to / from AN
O, when an electronic device such as a display device CRT for displaying a calculation result and a control status by the controller PC and a controller PC which executes predetermined arithmetic processing according to a program and controls each constituent element is further connected A recovery support device EWS for displaying data for supporting the recovery work is connected.

As shown in FIG. 2, this restoration support device EWS analyzes and investigates the cause of a failure of an electronic device, and displays the cause and action, and a conventional restoration support control system as in the prior art. The second recovery support control system that automatically displays the recovery work on the screen without referring to the instruction manual and drawings, and the third that constantly provides the latest program to the electronic device without accidentally loading the old program. And the recovery support control system.

The first restoration support control system detects a malfunction of the electronic device via the data transmission device LAN when the malfunction of the electronic device connected to the data transmission device LAN occurs, and detects the detected malfunction of the electronic device. A data reception processing unit 1 that requests the apparatus to transmit diagnostic information, and that receives and processes the diagnostic information that is returned based on the transmission result, and the diagnosis received by the data reception processing unit 1. A diagnostic information collection unit 2 that collects information and classifies and stores it for each type of board of an electronic device, and analyzes the diagnostic information collected by the diagnostic information collection unit 2 to determine the cause and determine the cause of failure and With the diagnostic information analysis unit 3 that performs processing for displaying the treatment, and the recovery support screen display unit 4 that displays the cause of failure and the treatment obtained by the processing by the diagnostic information analysis unit 3. It has been made.

The second recovery support control system includes each component of the first recovery support control system, and further stores a recovery procedure storage unit that stores a recovery procedure previously obtained based on past experience and other simulation results. 5 and a recovery procedure stored in advance in the recovery procedure storage section 5 based on the cause of failure and the result of action analyzed by the diagnostic information analysis section 3 and a corresponding recovery procedure is called and displayed on the recovery support screen display section 4. The recovery procedure determination processing unit 6 to be displayed, and if the program loading is required at the time of the recovery procedure determination processing by the recovery procedure determination processing unit 6, a corresponding download instruction by touch operation of the recovery support screen display unit 4 is received. Program storage unit 7 for downloading a program to an electronic device
It is composed of and.

Next, the third restoration support control system includes a program update request unit 8 for requesting a program to be updated periodically so that the latest program can be used when the program needs to be loaded, and the program storage. A data transmission processing unit 9 for transmitting not only the program for downloading from the unit 7 to the electronic device but also data for requesting detailed diagnostic information and the latest program.
And a data reception processing unit 1 for reading the latest program sent through the data transmission device LAN under the transmission of the request data, and a program update for classifying and storing the read latest program in the corresponding area of the program storage unit 7. And the processing unit 10.

Next, FIGS. 3 and 4 show the restoration support device EW.
FIG. 5 is a diagram showing an example of the recovery support screen display unit 4 in S, and FIG. 3 and FIG. 4 by the first recovery support control system.
The failure cause and remedy as shown in are displayed.

In this display example, the maintenance engineer has a message saying "The programmable controller PC main processor (MMPU1) board is defective. Please replace it."
Shape) Substrate spares can be prepared.

Next, in the second recovery support control system, the spare board is prepared under the display of the cause of failure and the treatment by the first recovery support control system. The recovery work for replacing the spare board is performed. The procedure is displayed.

That is, the display items described in (1) and (2) shown in FIGS. 3 and 4 indicate the locations and setting methods of various switches that require setting of the spare board. Since the items described in (8) indicate the method of exchanging the spare substrate, the substrate can be exchanged without error if the restoration work is performed according to the displayed items.

Further, in the third restoration support control system,
The PC main processor (MMPU1 type) board indicates that a program needs to be loaded. Touch "Program loading" and then "YES" to load the program and complete loading. Sometimes a comment of completion is displayed. Then, in (10), all the recovery work can be completed by performing the display work.

Next, the operation of the recovery support apparatus configured as described above will be described with reference to FIGS. First, the recovery support device EWS periodically transmits data requesting the latest program data from the data transmission device 9 as shown in FIG. 5, and based on the data, transmits the corresponding program from the controller PC or the display device CRT. The signal is received by the reception processing unit 1, stored in the program storage unit 7 via the program update processing unit 10, and prepared so as to be able to cope with a board failure (ST1).

In this state, abnormal data is transmitted from the electronic device, or the data reception processing unit 1 reads data on the data transmission device LAN periodically or when necessary based on an instruction from a maintenance person. When it is determined that the electronic device is defective (ST2), data is received from the defective electronic device (ST3), and whether the data of the defective electronic device is the controller PC or the display device CRT. , I / O device PIO is determined (ST4), and the process proceeds to the next step.

When it is determined in step ST4 that the controller PC is defective, the data reception processing unit 1
Requests the data transmission processing unit 9 to transmit the diagnostic information of the controller PC. Here, after requesting the diagnostic information from the data transmission processing unit 9, the controller PC
The diagnostic information sent from is collected by the diagnostic information collection unit 2 via the data reception processing unit 1 and stored in its own storage means (not shown) (ST5).

After the collection of diagnostic information is completed,
The diagnostic information analysis unit 3 analyzes the diagnostic information of the controller PC. The analysis of this diagnostic information includes the diagnostic information as shown in FIGS. 13 and 14 sent from the electronic device. Therefore, for example, an analysis is performed using an engineering tool or other failure analysis program, and the analysis result is obtained. Based on the above, the corresponding failure cause and treatment data are read from the storage means (not shown) and displayed on the recovery support screen display section 4 (ST6). Needless to say, various analysis methods by the diagnostic information analysis unit 3 can be considered. For example, when the diagnostic information includes, for example, information about a level indicating a failure state without using a failure analysis program, inference is performed from the level information and knowledge stored in advance in the storage unit to determine the cause of the failure. The treatment may be determined.

In step ST6, the recovery procedure determination processing section 6 reads out the recovery procedure from the recovery procedure storage section 5 based on the failure cause and the remedy result analyzed by the diagnostic information analysis section 3 to support the recovery. It is displayed on the screen display unit 4.

At this time, for example, when the cause of the failure and the action are the instruction to replace the board of the controller PC as shown in FIG. 3 and step ST7, the recovery procedure determination processing section 6 causes the recovery procedure storage section 5 to recover the replacement procedure of the board. Is read out and displayed on the recovery support screen display unit 4.

Here, the maintenance staff replaces the defective board of the controller PC according to the instruction on the display screen, loads the relevant program in the program storage unit 7 into the relevant electronic device (ST8), and confirms whether the restoration is completed (ST9). ).
If the restoration is not completed in step ST9, it is reconfirmed whether the restoration procedure is performed (ST1
1) Then, the process returns to step ST7 and the work is performed again.

Further, when it is not necessary to replace the substrate in step ST7, the recovery procedure corresponding to the cause of failure and the treatment is displayed. According to the recovery procedure, the cause of failure is repaired and the controller PC is started up. Raise (ST
10). When the recovery is completed, the process ends.

Next, when the data of the defective electronic device is not the controller PC in step ST4, the process proceeds to step ST21 of FIG. 6 and it is determined whether or not the display device CRT is defective.

When it is determined that the display device CRT is defective, the data reception processing unit 1 transmits the diagnostic information of the display device CRT to the data transmission processing unit 9 as in the case of the malfunction of the controller PC. Make a request to do so. After requesting the diagnostic information, display device CRT of electronic device
The diagnostic information sent from the diagnostic information collecting unit 2 collects the diagnostic information (ST22), and the diagnostic information is stored in the storage means for each type of substrate that constitutes the display device CRT.

When the collection of diagnostic information is completed as described above, the diagnostic information analysis section 3 subsequently analyzes the diagnostic information of the display device CRT. The analysis of this diagnostic information includes the diagnostic information as shown in FIGS. 13 and 14 sent from the electronic device. Therefore, for example, an analysis is performed using an engineering tool or other failure analysis program, and the analysis result is obtained. Based on the above, the corresponding failure cause and treatment data are read out from the storage means and displayed on the recovery support screen display section 4 (ST23). Needless to say, various analysis methods by the diagnostic information analysis unit 3 can be considered. For example, when the diagnostic information includes, for example, information about a level indicating a failure state without using a failure analysis program, inference is performed from the level information and knowledge stored in advance in the storage unit to determine the cause of the failure. The treatment may be determined.

Further, in this step ST23,
The recovery procedure determination processing section 6 reads out the recovery procedure from the recovery procedure storage section 5 and displays it on the recovery support screen display section 4 based on the failure cause and the treatment result analyzed by the diagnostic information analysis section 3.

At this time, for example, when the cause of failure and the measure are the instruction to replace the substrate of the display device CRT as shown in step ST24, the restoration procedure determination processing unit 6 reads the restoration procedure for the substrate exchange from the restoration procedure storage unit 5. Will be displayed on the recovery support screen display unit 4.

Here, the maintenance staff replaces the defective substrate of the display device CRT according to the instruction on the display screen, loads the relevant program in the program storage unit 7 into the relevant electronic device (ST25), and confirms whether the restoration is completed (ST25). ST26).
If the restoration is not completed in step ST26, it is reconfirmed whether the restoration procedure is performed (ST2
8) Then, the process returns to step ST24 and the work is performed again.

If it is not necessary to replace the substrate in step ST24, the recovery procedure corresponding to the cause of failure and the action to be taken is displayed. According to the recovery procedure, the cause of failure is repaired and then the display device CRT is displayed. Reboot (ST27). When the recovery is completed, the process ends.

Further, if it is not the display device CRT in step ST21, the process proceeds to step 31, and it is determined that the input / output device PIO is defective. In the case of the malfunction of the input / output device PIO as well, the data reception processing unit 1 instructs the data transmission processing unit 9 to perform the input / output device PIO as described above.
Issue a request to send IO diagnostic information. After the request for the diagnostic information, the diagnostic information collecting unit 2 collects the diagnostic information sent from the input / output device PIO (ST32), and stores the diagnostic information in the storage means for each type of the board forming the input / output device PIO. To do.

When the collection of the diagnostic information is completed as described above, the diagnostic information analysis unit 3 subsequently analyzes the diagnostic information of the display device CRT. The analysis of this diagnostic information includes the diagnostic information as shown in FIGS. 13 and 14 sent from the electronic device. Therefore, for example, an analysis is performed using an engineering tool or other failure analysis program, and the analysis result is obtained. Based on the above, the corresponding failure cause and treatment data are read out from the storage means 11 and displayed on the recovery support screen display section 4 (ST33).

Further, in this step ST33,
Based on the failure cause and the treatment result analyzed by the diagnostic information analysis unit 3, the recovery procedure determination processing unit 6 reads the recovery procedure from the recovery procedure storage unit 5 and displays it on the recovery support screen display unit 4.

At this time, for example, when the cause of failure and the measure are the instruction to replace the board of the input / output device PIO as shown in step ST34, the recovery procedure determination processing section 6 executes the recovery procedure of the board replacement from the recovery procedure storage section 5. It is read and displayed on the recovery support screen display unit 4.

Here, the maintenance worker replaces the defective substrate of the display device CRT according to the instruction on the display screen, and then the input / output device P.
The IO is restarted (ST35), and it is confirmed whether the recovery is completed (ST36). If the restoration is not completed in step ST36, it is reconfirmed whether the restoration procedure has been performed (ST38), and the process returns to step ST34 to perform the work again.

Further, when it is not necessary to replace the substrate in step ST34, a restoration procedure corresponding to the cause of the failure and the action to be taken is displayed. Therefore, according to the restoration procedure, the cause of failure is repaired and then the display device is displayed. Reboot the CRT (ST37). When the recovery is completed, the process ends.

Therefore, according to the configuration of the above-mentioned embodiment, conventionally, the diagnostic information was collected by the human system, and the collected diagnostic information was analyzed and the cause was investigated before considering the treatment method. Since the cause and action are automatically displayed, even beginners can easily understand the cause and action of the failure, and can prepare the restoration equipment early, which in turn contributes to a significant reduction of the restoration time. .

In the past, maintenance personnel carried out restoration work while looking at the instruction manual, drawings, etc., but the restoration procedure is actually displayed. There is no leakage, and recovery work can be done in a short time.

Further, regarding the loading of the program, the restoration process can always be executed using the latest program, and the latest program can be downloaded to the electronic device, so that erroneous input of old programs and input operation errors can be prevented, and beginners can be prevented. You can easily recover.

In the above embodiment, the data transmission / reception device LAN for both transmission and reception is provided. However, as shown in FIG. 8, for example, the transmission-dedicated data transmission device LAN1 and the reception-dedicated data transmission device LAN2 are divided to store data. It may be configured to transmit and receive. FIG. 9 shows the data transmission device LAN1, L
The connection relationship between the AN 2 and the recovery support device EWS is shown.

The electronic device is composed of a data transmission device, an input / output device, a controller, and a display device, but is not particularly limited to these constituent elements.
In addition, the present invention can be modified in various ways without departing from the scope of the invention.

[0056]

As described above, the present invention has the following effects. According to the invention of claim 1, as compared with the conventional method, it is possible to find out the cause of the failure and to quickly find out the remedy method, and the cause and remedy are displayed. Therefore, it is possible to prepare for restoration equipment early, which in turn contributes to a significant reduction in restoration time.

Next, in the invention of claim 2, since the recovery work is displayed in addition to the cause of failure and the remedy, the same effect as in claim 1 can be obtained, and the error and omission of the work can be prevented and the efficiency can be improved. You can do a good recovery work. this is,
Particularly effective for beginners. Further, according to the third aspect of the present invention, the latest program can be easily loaded, and erroneous input of the program to the electronic device, input operation error, etc. can be easily prevented.

[Brief description of drawings]

FIG. 1 is a diagram showing a basic configuration of a control device to which the device of the present invention is applied.

FIG. 2 is a block diagram showing an embodiment of a recovery support device according to the present invention.

FIG. 3 is a diagram showing an example of a screen display of the device of the present invention when a failure occurs in the electronic device.

FIG. 4 is a diagram showing a screen display example of the device of the present invention when the electronic device malfunctions.

FIG. 5 is a flowchart explaining the operation of the device of the present invention.

FIG. 6 is a flowchart for explaining the operation of the device of the present invention.

FIG. 7 is a flowchart for explaining the operation of the device of the present invention.

FIG. 8 is a system configuration diagram illustrating another embodiment of the device of the present invention.

9 is a block configuration diagram of an apparatus of the present invention connected to the system configuration of FIG.

FIG. 10 is a configuration diagram of a control device to which a conventional electronic device is applied.

FIG. 11 is a diagram showing an example of a board layout of each component of the electronic device.

FIG. 12 is a view for explaining a conventional diagnostic information collection method for a defective board.

FIG. 13 is a diagram showing a description example of conventionally collected diagnostic information.

FIG. 14 is a diagram showing a description example of conventionally collected diagnostic information.

[Explanation of symbols]

LAN ... Data transmission device, PIO ... I / O device, PC ...
Programmable controller, CRT ... display device,
EWS ... Recovery support device, 1 ... Data reception processing unit, 2 ... Diagnostic information collecting unit, 3 ... Diagnostic information analysis unit, 4 ... Recovery support screen display unit, 5 ... Recovery procedure storage unit, 6 ... Recovery procedure determination processing unit, 7 ... Program storage section, 8 ... Program update request section, 9 ... Data transmission processing section, 10 ... Program update processing section.

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Claims (3)

[Claims] 1. A recovery support device for performing recovery support for a defect of each target electronic device connected to a data transmission device, wherein the target is sent via the data transmission device when a defect occurs in the target electronic device. After receiving the defect data of the electronic device, the diagnostic information of the board related to the defective electronic device is requested via the data transmission processing means, and related to the defective electronic device sent based on this request. Data reception processing means for receiving diagnostic information of the board; and diagnostic information collection means for collecting the diagnostic information received by the data reception processing means and storing the diagnostic information for each type of the board constituting the fault target electronic device, The diagnostic information collected by the diagnostic information collecting means is analyzed to determine the cause, and the cause of failure and the countermeasure are displayed on the recovery support screen display section. A recovery support device comprising: diagnostic information analysis means. 2. The recovery support apparatus according to claim 1, further comprising a recovery procedure storage unit that stores recovery procedures corresponding to various causes and measures in advance, and a program collected from the failure target electronic apparatus. Program recovery means to save, determine the recovery procedure from the failure cause and action analyzed by the diagnostic information analysis means, read the corresponding recovery procedure from the recovery procedure storage means and display it on the recovery support screen display unit, In addition, a recovery support device is added with recovery procedure determination processing means for instructing to read the relevant program from the program storage means and download it to the target electronic device when a program needs to be loaded from the recovery procedure. . 3. The recovery support apparatus according to claim 1, wherein a program storage unit for storing a program collected from the faulty target electronic apparatus, and the target electronic apparatus for saving the latest program at regular intervals. Program update request means for requesting the apparatus to update programs for various boards, data transmission processing means for transmitting request data for the update program by the program update request means, and the data transmission processing means based on the request data of the data transmission processing means. After receiving the update program sent from each target electronic device side via the data transmission line by the data reception processing means, a program update processing means for storing in the corresponding area of the program storage means is added, and the restoration is performed. At the time of restoration processing in the procedure determination processing means, the latest program from the program storage means is used. Recovery support apparatus according to claim that it has available for download a read out.