JP2002189599A - Remote maintenance system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a remote maintenance system in which monitoring equipment accurately and unitarily manages the version of software stored in equipment to be a monitoring object and an adjustment parameter indicating the adjustment contents of the equipment. SOLUTION: The remote maintenance system is provided with the equipment (3 and 4) provided with a program (36) referred to so as to execute an operation, a monitoring device (2) provided with a transfer program (25) corresponding to the program (36), to be transferred to the equipment (3 and 4), and a communication medium (1) connecting the equipment (3 and 4) and the monitoring device (2). The equipment (3 and 4) is provided with an update execution part (35) for replacing the transfer program (25) transferred from the monitoring device (2) with the program (36) and the monitoring device (2) is provided with an update control part (23) for collating the version of the program (36) and the version of the transfer program (25). The update control part (23) transfers the transfer program (25) to the equipment (3 and 4) in the case that the result of collation indicates non-matching.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to a remote maintenance system including a device for executing a predetermined process and a monitoring device for performing remote maintenance of the device.

[0002]

2. Description of the Related Art A remote maintenance system is used to efficiently monitor a plurality of devices installed at geographically distant locations and perform so-called maintenance, which means diagnosing an operating state and remotely repairing a failure. Is done. The remote maintenance system includes a device to be monitored, a monitoring device that performs maintenance of the device, and a network that connects the device and the monitoring device.

Examples of the equipment include a refrigerator installed in a freezing warehouse, a cargo handling crane installed in a port, an automatic teller machine installed in an unattended window of a financial institution, and a relay station of a broadcasting network or a telephone network. And a communication relay device installed in the device. The operation control of these devices is generally executed by a processor. The processor is
For example, it operates with reference to programs and data stored in an electrically rewritable ROM (EPROM).

[0004] Further, these devices have adjustment points which are adjusted according to installation conditions, mechanical characteristics, and quality variations. The details of the adjustment are stored as parameters of the device, for example, in an EPROM, similarly to the program.

[0005] The program referred to by the processor is upgraded as necessary. When executing the program version upgrade, first, maintenance personnel go to the installation location of the device. The maintenance person connects, for example, a portable computer storing a new version of the program to the device. The maintenance personnel transfer the new version of the program from the portable computer to the device's EPROM. With the above procedure, the version of the program has been upgraded.

[0006] The maintenance staff adjusts the equipment so as to obtain an appropriate operation state in accordance with the installation environment of the equipment when the equipment is installed and maintenance is performed. The adjustment is
It can be classified into a case where it is executed mechanically and a case where it is executed electrically. Various tools are used for mechanical adjustment. A portable computer is used for electrical adjustment. In both the mechanical adjustment and the electrical adjustment, parameters corresponding to the adjustment content are stored in the EPROM.

[0007]

For example, the contents of remote maintenance of a device by a remote device may be changed according to the version of a program installed in the device. Similarly, it may be changed according to the parameter.

Conventionally, parameters indicating the version of a program and the details of adjustment have not been centrally managed by the monitoring device. Therefore, for example, when performing remote maintenance,
First, processing for detecting the version and adjustment parameter of the program of the device to be maintained had to be executed. For this reason, when a failure occurs, it is difficult to quickly perform maintenance.

Further, while the device operates normally, the version and parameters can be easily read from the EPROM. However, when a failure occurs, it is expected that these readings cannot be executed. In such a case, it is necessary to execute a search for the installation record or maintenance record of the device left in writing, and it is also difficult to perform quick maintenance.

[0010] The present invention provides a remote maintenance system in which a monitoring device can accurately and centrally manage a software version stored in a device to be monitored and an adjustment parameter indicating the adjustment content of the device.

[0011]

Means for solving the problem are described as follows. The technical items appearing in the expression are appended with numbers, symbols, etc. in parentheses (). The numbers, symbols, etc. are technical items that constitute at least one embodiment or a plurality of examples of the embodiments or examples of the present invention, in particular, the embodiments or the examples. Corresponds to the reference numerals, reference symbols, and the like assigned to the technical matters expressed in the drawings corresponding to the above. Such reference numbers and reference symbols clarify the correspondence and bridging between the technical matters described in the claims and the technical matters of the embodiments or examples. Such correspondence / bridge does not mean that the technical matters described in the claims are interpreted as being limited to the technical matters of the embodiments or the examples.

The remote maintenance system according to the present invention includes a device (3, 4) having a program (36) referred to for executing an operation, and a device (3, 4) corresponding to the program (36). Transfer program to be transferred (2
A monitoring device (2) having a monitoring device (5); and a communication medium (1) for coupling the devices (3, 4) and the monitoring device (2). The devices (3, 4) are transferred from the monitoring device (2). An update execution unit (35) for replacing the transfer program (25) with the program (36), and the monitoring device (2) checks the version of the program (36) against the version of the transfer program (25). 23), and the update control unit (23) transfers the transfer program (25) to the devices (3, 4) when the result of the comparison indicates mismatch.

[0013] A further remote maintenance system according to the present invention comprises:
The device (3, 4) includes a parameter (37) set according to the operating environment, and the monitoring device (2) transmits the parameter (37) notified from the transfer program (24) and the device (3, 4). And a storage unit (22) for storing an adjustment parameter (26c) representing the parameter (37c), and the device (3, 4) detects the parameter (37) and notifies the monitoring device (2) of the parameter (37). The update control unit (23) includes a management unit (34), and the update control unit (23) compares the parameter (37) with the adjustment parameter (26c).
The update control unit (23) executes a process of storing the parameter (26c) as a new adjustment parameter when the collation result of the parameter (37) indicates a mismatch.

[0014] A further remote maintenance system according to the present invention comprises:
The monitoring device (2) includes identification information (26a) identifying the device (3, 4), a program version (26b),
The update control unit (23) includes a management database (26) that stores the adjustment parameters (26c) in association with each other, and executes collation related to the devices (3, 4) with reference to the management database (26).

A further remote maintenance system according to the present invention comprises:
The transfer program (25) is transferred as an attached file of an e-mail (5) transmitted from the monitoring device (2) to the device (3, 4) via the communication medium (1).

[0016] A further remote maintenance system according to the present invention comprises:
The version (26b) of the program indicates the compile execution date and time of the program, and the version of the transfer program (25) indicates the compile execution date and time of the transfer program (25).

In the remote maintenance method according to the present invention, a program (36) referred to for executing an operation is mounted on a device (3, 4) to be monitored, and a monitor for monitoring the device (3, 4) is provided. A transfer program (25) corresponding to the program (36) and to be transferred to the device (3, 4) is mounted on the device (2), and the device (3, 4) and the monitoring device (2) are connected to a communication medium. The monitoring device (2) checks the version (26b) of the program 36 against the version of the transfer program (25), and the update control unit (23) indicates that the result of the check is inconsistent. In this case, the transfer program (25) is transferred to the device (3, 4), and the device (3, 4) replaces the transfer program (25) transferred from the monitoring device (2) with the program (36).

In a further remote maintenance method according to the present invention, the equipment (3, 4) includes a parameter (37) set according to the operating environment, and the monitoring device (2) includes the transfer program (25) and the equipment. The adjustment parameter (26c) representing the parameter (37) notified from (3, 4) is stored, and the device (3, 4) detects the parameter (37) and sends the parameter (37) to the monitoring device (2). Is executed, the update control unit (23) collates the parameter (37) with the adjustment parameter (26c). When the collation result of the parameter (37) indicates a mismatch, the update control unit (23) (37) is stored as a new adjustment parameter (26c).

The device according to the present invention comprises a program (36) referred to for executing an operation, a transfer program (25) corresponding to the program (36) and to be transferred to the device (3, 4). And a monitoring device (2) coupled via a communication medium (1) to a monitoring device (2) comprising:
Is compared with the version (26b) of the program (36) and the version of the transfer program (25), and when the result of the comparison indicates a mismatch, the transfer program (25) transferred from the monitoring device (2) is compared with the program (36). ) Is provided.

A further apparatus according to the present invention is for detecting a parameter (37) set according to the operating environment, a parameter (37), and causing the monitoring device (2) to recognize a change in the parameter (37). To the parameter (37)
Management unit (34) for notifying the monitoring device (2)
Is provided.

[0021]

FIG. 1 is a conceptual diagram of a remote maintenance system according to the present invention. Remote maintenance system shown in the figure
In 100, a refrigerator is listed as a device to be monitored. The remote maintenance system 100 includes an Internet network (network) 1, a development host (monitoring device) 2,
A first device 3 and a second device 4 are provided. The first device 3 includes a control device 3a and a refrigerator 3b. The second device 4 includes a control device 4a and a refrigerator 4b.

The monitoring device 2, the first device 3, and the second device 4
Are connected via the Internet 1.

The development host 2 includes a host computer installed in a device development department of a device design company and a communication device for executing access to the Internet 1 for executing remote maintenance and / or remote maintenance of the device. In addition,
The monitoring device (development host 2) may be a computer dedicated for maintenance installed at the monitoring site. Development Host 2
It is possible to execute program supply to the first device 3 and the second device 4, version management of programs stored in the devices, and management of adjustment parameters of the devices.

The first device 3 is installed in, for example, a freezing warehouse in Tokyo. The second device 4 is installed in, for example, a freezing warehouse in Osaka. Control devices 3a, 4 for first device 3 and second device 4
a includes a processor that controls and monitors the operation of the refrigerators 3b and 4b, and a communication device that executes access to the Internet network 1. The refrigerators 3b and 4b are devices that generate, for example, a frozen atmosphere in a warehouse.

The Internet network 1 is a communication network comprising a wireless or wired communication line such as a public communication network and a dedicated line.

FIG. 2 is a conceptual diagram of the development host 2 according to the present invention. The development host 2 shown in the figure includes a processor 21 and a storage unit 22. The processor 21 includes an update control unit 23 and a communication control unit 24. Storage unit 22
Stores an update program 25 and a management database 26.

The update control unit 23 includes first and second devices 3,
4 to monitor changes in the version of the program and adjustment parameters. The communication control unit 24 executes communication control of communication via the Internet 1.

The update program 25 is composed of the latest version of programs and data that are referred to when the control devices 3a and 4a of the first device 3 and the second device 4 (FIG. 1) operate. The update program 25 is transferred to the control devices 3a and 4a as needed. The control devices 3a and 4a
Referring to the transferred program and data, the refrigerator 3
The operation control and failure monitoring of b and 4b are executed.

In the management database 26, the development host 2
The data for specifying the operating environment of the first device 3 and the second device 4 to be remotely maintained are stored. Here, the management database 26 will be described in detail with reference to FIG.

FIG. 3 shows the configuration of the management database according to the present invention. The management database 26 shown in the figure includes a device name item 26a, a version item 26b, a parameter item 26c, an update date and time item 26d, and a remark item 26.
e.

The device name item 26a is an item in which a device name for specifying a device to be monitored by the development software 2 is stored. The version item 26b is an item in which information for identifying a program installed in the device, that is, a software name and a version are stored. The parameter item 26c is an item in which adjustment parameters representing the adjustment contents of the device are stored. The update date and time 26d is an item indicating the update date and time of the program (adjustment parameter) installed in the device. The remarks item 26e stores supplementary information regarding the device, for example, information for identifying the specification of the device, a special order product or a general-purpose product.

The first of the management databases 26 shown in FIG.
In the column 27, for example, information on the first device 3 is stored. The identification information M3 for identifying the first device 3 is stored in the device name item 26a in the first column 27. The version item 26b of the first column 27 stores a program mounted on the first device 3 and version information indicating the version thereof. In the parameter item 26c of the first column 27, version information indicating an adjustment parameter set in the first device 3 is stored. In the update date and time item 26d of the first column 27,
Update information indicating the update time of the program and adjustment parameter installed in the first device 3 is stored. In the remark item 26e of the first column 27, captured information indicating the specifications of the first device 3, for example, general-purpose and special-order types, and furthermore, model numbers and the like are stored.

The management database 26 is updated based on the contents of the execution when the update of the programs of the control devices 3a and 4a and the adjustment parameters are executed based on the control of the update control unit 23, for example.

Further, the management database 26 stores the control device 3
When a notification relating to the update of the program and the change of the adjustment parameter is received from a and 4a, it is updated based on the received content. In this case, the control devices 3a and 4a are provided with a notification function for notifying the contents of the first device 3 and the second device 4 along with the update of the program and the change of the adjustment parameter at the installation location.

Here, a detailed configuration of the control device will be described with reference to FIG. FIG. 4 is a conceptual diagram of the control device 3 according to the present invention. The control device 3 shown in the figure includes a processor 31 and a storage unit 32. The processor 31 includes a version notification unit 33, a parameter management unit 34, and an update execution unit 35. The storage unit 32 stores a program 36 and a parameter 37.

The processor 31 controls the operation of the refrigerator 3b. The storage unit 32 is a rewritable storage device in which programs and data referred to by the processor 31 are stored. The storage device includes, for example, a rewritable nonvolatile memory (EPROM), a magnetic storage device, and the like.

Version notification unit 33 of processor 31
When the program 36 and the parameter 37 based on the instruction of the development host 2 or the direct operation of the control device 3 are updated, the development host 2 is notified of version information indicating the program and its version, and parameter information indicating the adjustment parameter. .

The parameter management unit 34 controls the adjustment of the automatic adjustment part of the refrigerator 3b based on the instruction of the development host 2 or the direct operation of the control device 3, and further, the adjustment for the automatic adjustment part and the manual adjustment of the refrigerator 3b. An adjustment parameter is generated by detecting the adjustment content of the part. The adjustment parameter is stored in the storage unit 32 as the parameter 37.

The update execution unit 35 executes an update process of the program 36 based on an instruction of the development host 2 or a direct operation of the control device 3. After executing the program 36, the update execution unit 35 activates the version notification unit 33 to instruct the version information to be notified.

The operation of the remote system according to the present invention having the above configuration will be described with reference to FIGS.

FIG. 5 is a first flowchart according to the present invention. This first flowchart shows the operation of the management host 2 relating to the update of the program installed in the device. When a new version of a new program is created on the management host 2 side (S1), the program is stored in the storage unit 22 as an update program 25. The update control unit 23 stores the new update program 25 in the storage unit 22.
Then, referring to the version information (information indicating the program name and its version) relating to the new program and the management database 26, the device that needs to be updated is identified (S2). For example, step S1
When a program related to the first device 3 is created, it is recognized that the version item 26b in the first column 27 is old information. Based on this recognition, the update control unit 23 specifies the first device 3 as a target of a new program transfer, and instructs the communication control unit 24 to transfer a new program. The communication control unit 24 generates an electronic mail 5 (FIG. 1) in which the new program is set as an attached file, and transmits the electronic mail 5 to the first device 3 via the Internet 1 (S3).

After transmitting the electronic mail 5, the communication control unit 24 waits for a reply mail from the first device 3 (S4). Upon receiving the reply mail, the communication control unit 24 notifies the update control unit 23 of the content. When the content of the update notification indicates that the update was successful, the update control unit 23
6 is updated (S5). That is, the update control unit 23
The contents of the version item 26b in the first column 27 are updated to the latest version information corresponding to the new program. Similarly, the content of the update date and time item 26d in the first column 27 is changed to the date and time when the update was executed. When the adjustment parameters and the acquisition information on the program are changed with the change of the program, the parameter item 26c and the remark item 2
6e is also changed.

According to the above procedure, the program mounted on the first device 3 can be kept up-to-date by remote control of the development host 2. By the same procedure as the processing shown in FIG. 5, not only the update of the program but also the update of the adjustment parameter can be executed. Further, if the communication control unit 24 does not receive the reply mail within a certain time after the transmission of the electronic mail 5, the communication control unit 24 determines that the update of the program in the first device 3 has failed, and ends the processing. When it is determined that the program update has failed, the management host 2 executes the program update process again or issues an alarm to the operator of the management host 2.

FIG. 6 is a second flowchart according to the present invention. The figure shows the operation of the first device 3 (control device 3a). The update execution unit 35 of the control device 3a determines whether the refrigerator 3b is stopped or in operation (S11). Update execution unit 35
When the refrigerator 3b is operating, the process of step S11 is continued. When the refrigerator 3b is stopped, the update execution unit 35 executes the reception confirmation of the e-mail 5 (S12).
When the e-mail 5 has not arrived, the update execution unit 35 returns to the process of step S11. The update execution unit 35
When the incoming of the e-mail 5 is detected, the e-mail 5 is received (S13). The update execution unit 35 sends the e-mail 5
, An attached file, that is, a new program is separated and temporarily stored in an external storage device (S14). Update execution unit 35
Transfers the new program from the external storage device to the storage unit 32 when the storage in the external storage device is completed (S1).
5). When the transfer is completed, the update execution unit 35 deletes the new program stored in the external storage device and releases the storage area of the external storage device (S16). Update execution part 3
5 further instructs the version notification unit 33 to transmit a reply mail to the electronic mail 5. The version notifying unit 33 notifies the development software 2 of the completion of the update of the program 36, that is, a new version of the program 36 (S17).

The processing described above is performed on the development host 2 side and the first
The program of the first device 3 can be updated by being executed on the device 3 side. While the case where the update of the program is not executed during the operation of the refrigerator 3b has been described as an example, for example, when there is room in the storage area of the storage unit 32,
Stores new program while running with old program 3
If the operation by the new program can be started after the storage, the new program is stored in the storage unit 32 even if the refrigerator 3b is not stopped. Such processing can also be applied to the second device 4.

The version information of the program can be represented by, for example, the date and time of compilation of the program.
FIG. 7 is a third flowchart according to the present invention. The flowchart shown in the figure shows the flow of the compiling process according to the present invention. A dummy area for storing date and time data is set in the source program of the update program 25 in the storage unit 22 (S21). When the compiler compiles the source program into a machine language program (S22), a date and time area corresponding to the dummy area is set on the machine language program. The compiler sets the compile execution date and time in the date and time area (S2
3). That is, information unique to the machine language program, that is, version information, is recorded in the date and time area of the machine language program. The machine language program is update program 2
5 is stored in the storage unit 22 (S24). Further, the version information recorded in the date and time area is stored in, for example, the remark item 26e of the management database 26 (S2).
5).

The remark item 26e stores version information conforming to the description of the version item 26b so that the latest version of the program referred to by the device can be specified. When the version information indicated by the contents of the version item 26b and the version information indicated by the contents of the remark item 26e match, it means that the program referred to by the device is the latest version.

Next, a process in which the first device 3 checks whether the version of the program is the latest is described with reference to FIG. FIG. 8 shows a fourth flowchart according to the present invention. The update execution unit 35 reads out version information (compile date and time information) from the program 36 (S31).
The update execution unit 35 transmits a version confirmation notification including the version information to the host device 2. When receiving the confirmation notification, the update control unit 23 of the development host 2 compares the received version information with the version information stored in the remark item 26e of the first column 27 of the management database 26 (S32). If the comparison result indicates a mismatch, that is, if the program 36 of the first device 3 is an old version, the update control unit 23 instructs the first device 3 to execute a program update (S33). When receiving the update execution instruction, for example, when the operation of the refrigerator 3b is stopped, the update execution unit 35 requests the development host 2 to transfer the program. Upon receiving the request for the program transfer, the update control unit 23 executes a process of updating the program of the first device 3 (S3).
4). In step S34, first, steps S3 to S5
The same processing as the processing described in (FIG. 5) and steps S11 to S18 (FIG. 6) is executed. The above processing can be similarly executed for the second device 4.

As described above, when the compile execution date and time are used for version management, it is not necessary to set information for specifying a version.

By the way, it is desirable that the development host 2 can quickly detect a change in a program (adjustment parameter) in the first device 3 and the second device 4, that is, a change by an operation by a local staff. A process for quickly performing such detection will be described with reference to FIGS. 9 and 10.

FIG. 9 is a fifth flowchart according to the present invention. The figure shows processing on the first device 3 and the second device 4 side. For example, when the power of the first device 3 is turned on, the version notification unit 33 calculates a checksum of the storage unit 32 (the program 36) (S41). The version notification unit 33 notifies the development host 2 of the calculation result of the checksum via the Internet 1.

FIG. 10 is a sixth flowchart according to the present invention. The figure shows the processing on the development host 2 side. In addition,
In the remarks item 26e of the management database 26, the first
The description will be made assuming that the calculation results of the checksum of the device 3 and the second device 4 are stored.

Upon receiving the calculation result of the checksum from the first device 3 (S 51), the update control unit 23 changes the first column 27.
Collation with the calculation result stored in the remark item 26e of (S
52). If the comparison result indicates a mismatch, the update control unit 2
3 judges, for example, that the program of the first device 3 has been replaced by an old version, and instructs the first device 3 to execute the update of the program (S53). When receiving the update execution instruction, for example, when the operation of the refrigerator 3b is stopped, the update execution unit 35 requests the development host 2 to transfer the program. Upon receiving the program transfer request, the update control unit 23 executes a process of updating the program of the first device 3 (S54). In step S54, the same processes as those previously described in steps S3 to S5 (FIG. 5) and steps S11 to S18 (FIG. 6) are executed. The above processing can be similarly executed for the second device 4.

Similarly to the above-described processing, even if the checksum result regarding the adjustment parameter is stored in the remark item 26e, the version notifying unit 33 calculates the checksum of the parameter 37, and notifies the development host 2 of the result. Good. In this case, the development host 2 can quickly detect the execution of the on-site adjustment of the adjustment parameter. When detecting a change in the adjustment parameter, the update control unit 23 of the development host 2 instructs the first device 3 (the second device 4) to notify the adjustment parameter. The parameter management unit 34 creates a new parameter 37 based on the instruction.
Notify.

In the remote maintenance system according to the present invention, the monitoring device (development host) can accurately recognize the programs and adjustment parameters installed in the equipment even if no staff is arranged on the equipment side, that is, even when the equipment is operating unattended. Thus, appropriate remote maintenance can be performed. That is, the trouble of grasping the program and the adjustment parameter mounted on the device on the monitoring device side can be omitted. Further, since the contents of the program and the adjustment parameter recognized by the monitoring device are different from the program and the adjustment parameter actually mounted on the device, a situation in which inappropriate maintenance is performed is avoided.

[0056]

According to the remote maintenance system of the present invention, the monitoring equipment can accurately and centrally manage the software version stored in the equipment to be monitored and the adjustment parameters indicating the adjustment contents of the equipment. Therefore, it is not necessary to check the version and the adjustment parameter before the maintenance is performed, and the maintenance can be quickly performed. Further, it is possible to avoid a situation where inappropriate maintenance is performed without grasping the correct version and adjustment parameters.

[Brief description of the drawings]

FIG. 1 is a conceptual diagram of a remote monitoring system according to the present invention.

FIG. 2 is a conceptual diagram of a development host according to the present invention.

FIG. 3 is a configuration diagram of a management database according to the present invention.

FIG. 4 is a conceptual diagram of a control device according to the present invention.

FIG. 5 is a first flowchart according to the present invention.

FIG. 6 is a second flowchart according to the present invention.

FIG. 7 is a third flowchart according to the present invention.

FIG. 8 is a fourth flowchart according to the present invention.

FIG. 9 is a fifth flowchart according to the present invention.

FIG. 10 is a sixth flowchart according to the present invention.

[Explanation of symbols]

 1: Internet network 2: Monitoring device (development host) 3: First device 3a, 4a: Control device 3b, 4b: Refrigerator 4: Second device 5: E-mail 21, 31: Processor 22, 32: Storage unit 23 : Update control unit 24: communication control unit 25: update program 26: management database 33: version notification unit 34: parameter management unit 35: update execution unit 36: program 37: parameter

 ────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Hirofumi Yoshikawa 4-6-22 Kannonshinmachi, Nishi-ku, Hiroshima-shi, Hiroshima F-term in Hiroshima Research Laboratory, Mitsubishi Heavy Industries, Ltd. 5B076 AC05 AC07 BB06 EB02

Claims (10)

[Claims] 1. An apparatus including a program referred to for executing an operation, a monitoring apparatus corresponding to the program and including a transfer program to be transferred to the apparatus, and combining the apparatus and the monitoring apparatus. The communication device, the device includes an update execution unit that replaces the transfer program transferred from the monitoring device with the program, and the monitoring device updates the version of the program against the version of the transfer program. A remote maintenance system comprising a control unit, wherein the update control unit transfers the transfer program to the device when the result of the comparison indicates a mismatch. 2. The remote maintenance system according to claim 1, wherein the device includes a parameter set in accordance with an operating environment, and the monitoring device transmits the transfer program and the parameter notified from the device. A storage unit that stores an adjustment parameter representing the parameter, the device includes a parameter management unit that executes detection of the parameter and notification of the parameter to the monitoring device, and the update control unit includes the parameter and the adjustment parameter. A remote control system that executes a process of storing the parameter as a new adjustment parameter when the result of the parameter comparison indicates a mismatch. 3. The remote maintenance system according to claim 2, wherein the monitoring device includes a management database that stores identification information for identifying the device, a version of the program, and the adjustment parameter in association with each other, The update control unit refers to the management database,
A remote maintenance system that performs the matching on the device. 4. The remote maintenance system according to claim 1, wherein the transfer program attaches an electronic mail transmitted from the monitoring device to the device via the communication medium. Remote maintenance system transferred as a file. 5. The remote maintenance system according to claim 1, wherein the version of the program indicates a compile execution date of the program, and the version of the transfer program is a compile of the transfer program. Remote maintenance system indicating the execution date and time. 6. A program to be referred to for executing an operation is mounted on a device to be monitored, and a transfer corresponding to the program and to be transferred to the device is performed by a monitoring device for monitoring the device. A program is installed, the device and the monitoring device are connected via a communication medium, the monitoring device checks the version of the program and the version of the transfer program, and the update control unit determines that the result of the checking is A remote maintenance method for transferring the transfer program to the device when the mismatch is indicated, wherein the device replaces the transfer program transferred from the monitoring device with the program. 7. The remote maintenance method according to claim 6, wherein the device includes a parameter set in accordance with an operating environment, and the monitoring device transmits the transfer program and the parameter notified from the device. The device executes the detection of the parameter and the notification of the parameter to the monitoring device, the update control unit collates the parameter with the adjustment parameter, and the update control unit stores And a remote maintenance method for storing the parameter as a new adjustment parameter when the collation result of the parameter indicates a mismatch. 8. A device which is remotely maintained and / or remotely maintained for each of the business hours by a plurality of monitoring centers having different business hours, and is connected to the plurality of monitoring centers via a network. 9. A monitoring device comprising a program referred to for executing an operation, coupled to a monitoring device corresponding to the program and comprising a transfer program to be transferred to the device via a communication medium, and An apparatus comprising: an update execution unit that compares a version of the program with a version of the transfer program in a monitoring device, and replaces the transfer program transferred from the monitoring device with the program when a result of the comparison indicates a mismatch. 10. The apparatus according to claim 9, wherein the parameter is set according to an operating environment, and the parameter is monitored in order to detect the parameter and make the monitoring device recognize a change in the parameter. A device that includes a parameter management unit that notifies the device.