JP2001211232A - Device management control method and system for remote access - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize resetting a system for trying to restore the system against a runaway of a CPU, such as a hang-up of a management object device, without the need for special hardware units with an inexpensive configuration. SOLUTION: In addition to a device main body CPU 1, microcomputer 51 (incorporating a keyboard 5), that is in operation asynchronously with the CPU 1 and having already been mounted, is used to remotely access a management object device that causes hang-ups, uses a reset circuit 54 to conduct reset processing so as to enhance the convenience of the remote access by restoration by restart. Furthermore, the microcomputer 51 informs a LAN controller 6 about an alarm, transmits information of abnormality detection to an external management computer, deactivates a power supply circuit 53, so as to avoid faults, such as abnormal heat generation or the effect on other device when the hang-up continues.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to a device management control method and system by remote access.

[0002]

2. Description of the Related Art In recent years, personal computers (hereinafter referred to as P
C), PCs are connected to LAN (Loca
l Area Network) and sharing, for example, large capacity file devices. In addition, OA devices such as high-performance printers and copiers have been connected to the LAN and shared.

In particular, in a copying machine, by adding a system board having a CPU, data processing or the like which also serves as control for LAN connection has been performed.

[0004]

Under such an environment,
By performing remote control via LAN,
There is an increasing demand for software upgrades and remote diagnostics of hardware. Under such circumstances, a system that has a separate diagnostic PC and can perform monitoring and reset processing of the target system and a service processor board for management on the device to be managed, and manage power and devices Systems that can be implemented are disclosed in Japanese Patent Application Laid-Open Nos. 10-2222250 and 9-50386, respectively. However, all of the above systems are not preferable because the system configuration becomes large and expensive.

The present invention has been made in view of the above circumstances, and is based on the premise that a device to be managed is remotely accessed via a LAN and managed. For example, only software such as Windows NT sold by Microsoft in the United States on an OEM basis is used. It is possible to reset the managed device and attempt to recover from runaway of the CPU such as a hang-up of the managed device that cannot be realized with a low-cost configuration without adding special hardware. It is an object to provide a device management control method and system by remote access.

[0006]

According to a first aspect of the present invention, there is provided a device management and control method using remote access for managing a device to be managed by remotely accessing the device via a communication network. In the control system, in the device to be managed,
An input / output control device that operates asynchronously with a CPU serving as a control center of the managed device detects an operating state of the managed device by receiving a system start signal coming from the outside via the communication network, Depending on the state, the device to be managed is reset and restarted.

[0007] As a result, the CP, such as a hang-up of a device to be managed, which cannot be realized by software alone
It is possible to reset the device to be managed and recover from the runaway of U with a low-cost configuration without adding special hardware.

According to a second aspect of the present invention, there is provided a device management and control system based on remote access, wherein the managed device is managed by remotely accessing the managed device via a communication network.
An input / output control device that operates asynchronously with a CPU serving as a control center of the managed device, a receiving unit that receives a system start signal coming from the outside via the communication network, and a receiving unit that receives the system start signal. The apparatus includes a state detection unit that detects an operation state of the managed device, and an operation mode control unit that resets and restarts the managed device depending on a state detected by the state detection unit.

In a third aspect of the present invention, there is provided a device management and control system based on remote access, wherein the receiving means includes a LAN controller for generating a system start signal, and the system start signal. The flag assigned to the input / output control device is set from, and the flag is released by accessing the microcomputer of the input / output control device.

Further, in the device management control system by remote access according to claim 4, in the system according to claim 2, the status detecting means includes a power-on state, a standby state, and an operation state of the managed device. Means for activating the device to be managed when the standby state is detected and determining whether the flag is generated within a predetermined time.

According to a fifth aspect of the present invention, in the device management control system by remote access according to the fourth aspect, the operation mode control means determines whether or not the release of the flag occurs within a predetermined time. It is provided with a judging means for judging whether or not.

Further, in the device management control system by remote access according to claim 6, in the system according to claim 5, the re-operation mode control means further comprises:
A reset unit is provided for resetting the managed device only when the flag is not cleared within a predetermined time.

According to a seventh aspect of the present invention, in the device management control system by remote access according to the sixth aspect, the operation mode control means further comprises: a predetermined time after resetting the managed device. Is provided with a judging means for judging whether or not the flag is released.

Further, in the device management control system by remote access according to claim 8, in the system according to claim 7, the operation mode control means further comprises: Only when the flag has not been cleared, the LAN
The controller is provided with a notifying unit for notifying an alarm.

With each of the above configurations, the input / output control device
When the AN controller detects a signal generated by receiving a system start packet from the outside, it turns on an internal flag. This flag can be cleared by issuing a flag clear command from the system. The fact that this flag is cleared indicates that the device is operating normally.

After the detection, the state of the system is detected, and time measurement by a timer is started. Thereafter, if the detected state of the system is in the non-operation state, the system is set to the operation state. In the case of startup from the non-operation state, the system checks ON / OFF of the previous flag, and the flag is ON.
If so, clear that flag. If it is detected in the operating state, an interrupt signal is sent to the system and a request is made to confirm the previous flag ON / OFF. Thereafter, the input / output control device checks whether or not the flag has been cleared. If the flag has been cleared, the process ends as it is. Otherwise, the predetermined time has not elapsed since the first timer has expired. Make sure. If the time is up, it is determined that there is some kind of trouble, and the second timer is started, and a reset signal is generated to restart the system. If the flag is not cleared even after the restart and the second timer times out, an alarm signal is sent to the LAN controller.

When the power is off, it is checked whether or not the power is turned on (whether the power is normally turned on) before checking the flag. Also in this case, the system judges that the system is abnormal and sends an alarm signal of the LAN controller.
Thus, the hung-up management target device can be reset by using a microcomputer different from the CPU of the device main body, and the convenience of remote access is improved by recovery by restart. In addition, a microcomputer is built into the system board built into PCs and copiers for keyboard control, etc., and by using the microcomputer, the system can be built inexpensively without adding special hardware. Can be built.

According to a ninth aspect of the present invention, there is provided a device management and control system by remote access according to the eighth aspect, wherein the operation mode control means notifies the LAN controller of an alarm and outputs information of abnormality detection to the outside. And then turn off the system power of the managed device
It was decided to.

According to a tenth aspect of the present invention, in the device management and control system by remote access according to the ninth aspect, the operation mode control means further comprises: Turn on the power of the input / output control device operated by the prepared auxiliary power supply
The system power of the device to be managed is turned on again by using the means.

According to each of the above configurations, a process of turning off the system power is performed after notifying an alarm to the LAN controller and notifying the management computer of the abnormality detection. Further, after the power is turned off, the system power can be turned on again by using a microcomputer operated by the auxiliary power. As a result, the management computer can determine a system abnormality and execute a service such as dispatch of a person, but the managed device still hangs. By providing a means for turning off the power or turning on the power again as described above, it is possible to prevent troubles such as abnormal heat generation due to continuation of the hang-up state and unpredictable effects on other devices. If restoration is not possible, the possibility of restoration can be left by repeating the above-mentioned power OFF / ON.

According to an eleventh aspect of the present invention, in the remote access device management control system according to the second aspect, the receiving means has a modem controller, and a ringing signal of the modem controller is in a non-detection state. In this case, the flag is released by accessing the microcomputer of the input / output control device.

According to a twelfth aspect of the present invention, in the device management control system by remote access according to the eleventh aspect, the operation mode control means determines that the ringing signal of the modem controller continues for a predetermined time. Determining means for determining, and determining means for activating the device to be managed when the standby state is detected by the state detecting means, and determining whether or not the release of the flag occurs within a predetermined time. .

Further, in the device management control system by remote access according to claim 13, in the system according to claim 12, the re-operation mode control means further comprises the flag is not cleared within a predetermined time. A reset unit that resets the management target device only when the management target device is reset.

According to a fourteenth aspect of the present invention, in the device management and control system by remote access according to the thirteenth aspect, the operation mode control means further comprises: a predetermined time after resetting the managed device. Is provided with a judging means for judging whether or not the flag is released.

Further, in the device management control system by remote access according to claim 15, in the system according to claim 14, the operation mode control means further comprises: If the flag is not released, the processing is terminated.

[0026] In the device management control system by remote access according to claim 16, in the system according to claim 15, the operation mode control means is configured to execute the management when the abnormality of the management target device is detected. The system power of the target device was turned off.

[0027] Further, in the device management control system by remote access according to claim 17, in the system according to claim 16, the operation mode control means separates a system power supply of the device to be managed after turning off a system power supply of the device to be managed. Power supply O of the input / output control device operated by the prepared auxiliary power supply
Using the N means, the system power supply of the device to be managed is turned on again.

According to the above configuration, the same operation and effect can be obtained by using a modem controller instead of the LAN controller. In this case, a means for detecting the RI signal is added, and it is possible to cope with a public line, thereby improving the convenience of remote access. In this case, the input / output control device transmits the RI from the modem controller.
When a signal (a signal indicating that the modem controller 7 is receiving a call via the public line) is detected, if the system is normal, the system responds within A seconds.
The I signal goes undetected after A seconds. Therefore, after detection, A
When the RI signal is detected for more than A seconds after performing WAIT for seconds, the previous flag is turned on. This flag can be cleared by sending a flag clear command from the system. Clearing this indicates that the system is operating properly.

After the detection, the state of the system is detected, and the first timer is started. Thereafter, the system is set to the operating state according to the state of the system. In the case of startup from the non-operation state, the system checks the previous flag, and if the flag is ON, clears the flag. If it is detected in the operating state, it sends an interrupt signal to the system and requests confirmation of the flag. Thereafter, if the flag is cleared, the processing is terminated as it is, and if not, it is confirmed whether or not a predetermined time has elapsed by the time-up of the first timer. If the time is up, the second timer is started assuming that there is some trouble, and a reset is generated to restart the system. If the flag is not cleared even after the restart and the second timer times out, it is determined that the system is abnormal and the process is terminated as it is. When the power is off, check whether the system is in operation before turning on the flag (whether the power is normally turned on). If the first timer times out without operating, the system is abnormal. And terminates the process. In the abnormal termination processing, the flag is cleared, and the process returns to the normal standby state. The final determination based on the abnormality is performed on the outside, for example, on the management computer side.

After the abnormality determination, the input / output control device may perform a process of turning off the power. Also, turn off the power
After the FF, the system power can be turned on again by using a built-in microcomputer operated by the auxiliary power.

For external remote access using a public line, a PC serving as a server is separately required. For example, Microsoft's WindowsN
T's remote access server can also support a modem controller connection using a public line, and therefore can also be implemented via a public line using a modem controller. As a result, the same operation and effect as when the LAN controller is used can be obtained.

[0032] In the device management control system by remote access according to claim 18, in the system according to claim 2, the receiving means includes a LAN controller for generating a system start signal, and a LAN controller for generating a system start signal. A LAN controller for setting a flag assigned to the entry output control device and releasing the flag by accessing a microcomputer of the input / output control device;
When the ringing signal is in the non-detection state, the remote controller includes both a remote controller and a modem controller that releases the flag by accessing the microcomputer of the input / output controller.

According to the above configuration, when either the controller or the line of the LAN or the modem controller is abnormal and the system is normal, a path for remote control can be secured. Can be operated in such a manner that, when viewed from the management computer, if access via LAN is abnormally terminated, the access is switched to via modem controller and remote access is attempted.

[0034]

FIG. 1 is a block diagram showing an embodiment of the present invention. Here, an internal configuration of a system board built in for performing LAN connection and data processing to a copying machine or the like exemplified as a remote monitoring target device is shown.

The system board is a CPU which is a device main body.
1 is a control center, a system controller 2, a memory 3, a display controller 4, a keyboard controller 5
(Microcomputer), LAN controller 6, modem controller 7, copy / printer control unit 8, etc. The keyboard controller 5 has a keyboard 12
However, a LAN line 15 is connected to the LAN controller 6, a public line 14 is connected to the modem controller 7, and a copy / printer and the like are connected to the copy / printer control unit 8.

The CPU 1 performs arithmetic control according to a program stored in the memory 3 and also controls each block described above. The system controller 2 is connected to the CPU 1 via the CPU bus 10, controls read / write of the memory 3 via the memory bus 11, and is connected to the input / output bus 9. 9 Perform arbitration control for use. The system controller 2, the display controller, the copy / printer control unit 8, and the like are commonly connected to the input / output bus 9. The display controller 4 uses C
It controls the interface for displaying the display data generated by the PU 1 on a display monitor (not shown). The keyboard controller 5 has a built-in microcomputer to reduce the load on the CPU 1, and in addition to taking in key input data as in the conventional case, also performs a remote access process described later. The functions of the keyboard controller 5 (microcomputer) will be described later in detail together with the LAN controller 6 and the modem controller 7.

FIG. 2 shows a hardware configuration showing the characteristic portion. In FIG. 2, blocks denoted by the same reference numerals as those in FIG. 1 are the same as those in FIG. In the figure, a microcomputer 51 having a built-in keyboard controller 5 is usually mounted for controlling an input / output device such as a keyboard, and connects signals characteristic of the present invention using input / output ports of the microcomputer. are doing.

The system state detection circuit 52 is a circuit for detecting a system state such as a power management state of the system, generally, an operation state, a power OFF state, and a power saving state (standby state).

In order to monitor this state, the microcomputer 51
Is connected to a power supply circuit 53 using a sub power supply and a battery, so that the state of the device can be monitored even when the power is off. The logic section of the LAN controller 6 is also connected to a sub power supply for receiving a WAKEUP packet and transmitting a WAKEUP signal transmitted on a LAN line 15 (not shown).

The WAKE signal propagating through the LAN line 15 is a signal output from the LAN controller 6 when a packet for WAKE is received from an externally connected management computer, and is connected to the microcomputer 51 as a LAN-WAKE signal. are doing. Alarm signal is usually LA
The N controller 6 has a function, for example, for notifying, via the LAN line 15, that a cover of a device body that needs to be kept confidential has been opened by someone. Therefore, the bus signal connecting between the controller that detects this and the LAN controller 6 causes L to be low.
The AN controller 6 uses the information obtained based on the alarm signal (bus signal) to output the L without using the device main body (CPU 1).
The alarm packet can be sent to the management computer via the AN. In the device of the present invention, this signal can also be connected to the microcomputer 51 to send alarm information to a management computer (not shown) via the LAN.

The power ON signal turns on the system power supply.
The / OFF signal and the system interrupt signal are used to interrupt the CPU 1 via the system controller 2 and notify the system that some state change has occurred inside the microcomputer 51. WAKEUP
The signal is a signal requesting that the system be shifted to the operating state mainly when the system is in the standby state. The reset request signal is a signal for resetting the entire system except the microcomputer 51 via the reset circuit 54.

Hereinafter, the operation of the embodiment of the present invention shown in FIGS. 1 and 2 will be described in detail with reference to the flowcharts shown in FIGS.

The flowchart shown in FIG. 3 shows the operation procedure of the management computer. First, when remote access is started (step S301), if the system is normal, remote access is continued as it is (step S30).
3). At this time, if there is no response from the management target device (step S302), a WAKEUP packet is transmitted from the management computer (step S304), and the maximum time during which the management target device starts up (Timer1 + Timer2)
Access time is issued again after waiting (steps S305 and S306), and if there is no response,
Judge that the system has some problem. Also, when an alarm packet is received via the microcomputer, it can be determined that there is some problem (step S307).

FIG. 4 shows a flowchart of the processing of the microcomputer 51 of the device to be managed. Here, the WAKE signal from the LAN line, that is, the LAN controller 6
Generated by receiving a WAKEUP packet
When the AKE signal is detected (step S401), the WAKE generation flag assigned to the RAM in the microcomputer 51 is turned on (step S402). This flag can be cleared by issuing a flag clear command from the system to the microcomputer 51. The fact that this flag is cleared indicates that the device is operating normally.

After the detection, the microcomputer 51 detects the state of the system (step S403), and starts counting time with a first timer (hereinafter, referred to as timer 1) (step S404). Thereafter, if the detected state of the system is in the non-operation state, the system is set to the operation state.
As a specific example, if the system is in a power saving state, a process of shifting to a full operation state is performed, and if the system is in a power OFF state in which only the auxiliary power is input, a system power ON process is performed.

In the case of startup from the non-operation state, the system checks the ON / OFF of the WAKE occurrence flag, and if the flag is ON, clears the flag. If WAKE is detected in the operating state, the microcomputer 51 sends an interrupt signal to the system (step S407), and the WAKE
Requests flag ON / OFF confirmation. Microcomputer 51
Checks whether the WAKE flag has been cleared (step S408). If the WAKE flag has been cleared, the process is terminated as it is. Otherwise, the timer 1 has timed out and a predetermined time has elapsed. Confirmation (step S409). If the time is up, it is determined that there is some kind of trouble, and the second timer (hereinafter, referred to as timer 2) starts measuring time (step S410) and generates a reset signal. The system is restarted (step S411).
After restarting, the WAKE flag is not cleared (step S
If the timer 2 has timed out (step S413), an alarm signal is sent to the LAN controller 6 (step S414).

When the power is off, it is checked whether the power is turned on (whether the power is normally turned on) before checking the WAKE flag (step S 416). Also times out (step S417), it is determined that the system is abnormal, and L
An alarm signal from the AN controller 6 is transmitted (step S414).

After the alarm is notified to the LAN controller 6 to notify the management computer of the detection of the abnormality, a process of turning off the system power may be performed. After the power is turned off, the system power can be turned on again by using the microcomputer 51 operated by the auxiliary power.

In the procedure shown in FIG. 4, the management computer side can judge a system abnormality and execute a service such as dispatch of a person, but the managed device continues to be in a hung state. Power off as described above,
Alternatively, by having a means for turning on the power again, it is possible to prevent a failure such as abnormal heat generation due to the continuation of the hang-up state and an unpredictable effect on other devices. Power OFF /
By repeating ON, the possibility of recovery can be left.

In the above-described system, since remote control is performed by LAN connection, a remote PC is required for remote access from outside using a public line. For example, a remote access server of Windows NT of Microsoft Corporation in the United States can also support a modem controller connection using a public line, and thus can be realized also via a public line using a modem controller 7.

FIGS. 5 and 6 are flowcharts showing the processing procedure according to another embodiment of the present invention, and show the operating procedure in each of the management computer and the device to be managed. 3 and FIG. 4 use a LAN controller to transmit an alarm packet using an alarm signal of the LAN controller. In contrast, here, the implementation of the modem controller 7 shown in FIG. The feature is that a portion for connecting the emitted ringing signal (RI) to the microcomputer is characterized. The presence or absence of the LAN interface 6 does not affect the system configuration.

First, the procedure of the management computer shown in FIG. 5 will be described. In FIG. 5, when starting remote access, it is necessary to establish a connection between the modem controllers 7. If the system is normal, the remote access is started because the connection can be made as it is (step S501). At this time, if there is no response from the managed device, this means that the other party, that is, the managed device has not responded to the call from the modem controller 7, and both the managed computer and the managed device have A in advance. It is set to respond to the call within seconds (step S503). Therefore, if there is no response within A seconds, it is determined that there is a possibility of some abnormality (step S502), and the call is continued for further B seconds (after the call) (step S504), and connection is still not possible. Sometimes, it is determined that there is some problem, and remote access is disabled (step S
505).

FIG. 6 is a flowchart showing a microcomputer processing procedure in the device to be managed. When an RI signal (a signal indicating that the modem controller 7 is receiving a call via the public line) from the modem controller 7 is detected (step S601), if the system is normal, the system responds within A seconds. The RI signal is not detected after A seconds (step S603). Therefore, the microcomputer 51 waits for A seconds after the detection (step S60).
2) When the RI signal is detected for more than A seconds, the WAKE generation flag is turned on. This flag can be cleared by sending a flag clear command from the system to the microcomputer 51. Clearing this indicates that the system is operating properly.

After the detection, the microcomputer 51 detects the state of the system (step S604), and starts the timer 1 (steps S605, S606, S60).
7). Thereafter, the system is set to the operating state according to the state of the system. In the case of startup from the non-operation state, the system checks the WAKE occurrence flag, and if the flag is ON, clears the flag. WAK in operation
If E is detected, the microcomputer 51 sends an interrupt signal to the system (step S610), and requests confirmation of the WAKE flag (step S611).

If the WAKE flag has been cleared, the microcomputer 51 ends the processing as it is. If not, the microcomputer 51 checks whether or not a predetermined time has elapsed since the timer 1 timed out (step S612). If the time is up, the timer 22 is started assuming that there is some trouble (step S61).
3) In addition, a reset is generated (step S614), and the system is restarted. If the WAKE flag is not cleared even after the restart and the timer 2 times out (step S616), it is determined that the system is abnormal, and the process is terminated.

When the power supply is in the OFF state, it is checked whether the power supply is in the operating state (whether the power supply is normally turned on) before checking the WAKE flag. Also in S618 and S619), it is determined that the system is abnormal, and the processing is terminated. The microcomputer 51 clears the WAKE flag and returns to the normal standby state as it is. The final determination based on the abnormality is performed by the management computer.

After the abnormality is determined, a process of turning off the power may be performed. After the power is turned off, the system power can be turned on again by using the microcomputer 51 operated by the auxiliary power.

In the procedure shown in FIG. 6, the management computer side can execute a service such as dispatching a person by judging an abnormality in the system, but the management target device is still in a hung state. By providing a means for turning off the power or turning on the power again as described above, it is possible to prevent troubles such as abnormal heat generation due to continuation of the hang-up state and unpredictable effects on other devices. If recovery is not possible, turn off /
By repeating N, the possibility of recovery can be left.
In addition, the use of a modem controller improves the convenience of external access by supporting a public line as compared with the case of using a LAN controller.

In the embodiment of the present invention described above, the LAN controller 6 is used as a means for remote access.
Alternatively, only an example realized by using one of the modem controllers 7 has been shown, but both may be provided. In this case, if there is an abnormality in one of the controller and the line of the LAN or the modem controller and the system is normal, a route for remote control can be secured. When the access is abnormally terminated via the LAN, the operation can be performed by switching to the modem controller and attempting remote access.

[0060]

As described above, according to the present invention, a hung-up device can be reset by using a microcomputer which is already mounted for an input / output control device and is separate from the CPU of the device body. The convenience of remote access is improved by recovery by restart. Also, PC
Also, in most cases, the system board built in the copier, etc., has a built-in microcomputer for controlling the keyboard and the like, and by using this microcomputer, it is possible to use a low-cost configuration without adding special hardware. realizable.

According to the present invention, the following effects can be obtained. (1) In addition to using the alarm function of the LAN controller to notify the abnormality detection information to the management computer, the device to be managed has a unit for turning off the power and controlling the power supply to generate abnormal heat, By avoiding unpredictable failures to other devices, or by turning on the power from OFF, there is a possibility that the system will not be restored by just resetting but will be restored. (2) A similar effect can be obtained by using a modem controller instead of the LAN controller.
Since only a means for detecting the I signal is added, it can be realized with a low-priced configuration. Further, by supporting a public line, the convenience of external access is improved. (3) By providing both the LAN controller and the modem controller as remote access means, if the system is normal and the LAN or the modem controller or the line used is abnormal, remote access can be realized using one of them. And reliability is improved.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention.

FIG. 2 is a block diagram showing a detailed configuration around a keyboard controller shown in FIG. 1;

FIG. 3 is a flowchart illustrating an example of an operation procedure of a management computer.

FIG. 4 is a flowchart illustrating an example of an operation procedure of the management target device.

FIG. 5 is a flowchart showing another example of the operation procedure in the management computer.

FIG. 6 is a flowchart illustrating another example of the operation procedure in the management target device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Device main body (CPU) 2 System controller 3 Memory 4 Display controller 5 Keyboard controller 6 LAN controller 7 Modem controller 8 Copy / printer control part etc. 9 I / O bus 10 CPU bus 11 Memory bus 12 Keyboard 13 Copy, printer, etc. 14 Public line 15 LAN line 51 Microcomputer 52 System state detection circuit 53 Power supply circuit 54 Reset circuit

 ──────────────────────────────────────────────────続 き Continued on the front page F-term (reference)

Claims (18)

[Claims] 1. A device management control system for managing a device to be managed by remote access via a communication network, wherein the device is in the device to be managed and is asynchronous with a CPU serving as a control center of the device to be managed. An operating input / output control device detects an operation state of the managed device by receiving a system start signal coming from the outside via the communication network, and resets and restarts the managed device depending on the state. A device management control method by remote access. 2. A device management control system for managing a device to be managed by remote access via a communication network, wherein the device is in the device to be managed and is asynchronous with a CPU which is a control center of the device to be managed. An operating input / output control device, receiving means for receiving a system start signal coming from the outside via the communication network, and state detecting means for detecting the operating state of the managed device by receiving the system start signal. And an operation mode control means for resetting and restarting the managed device depending on a state detected by the state detecting means, and a device management control system by remote access. 3. The receiving means includes a LAN controller that generates a system start signal, sets a flag assigned to the input / output control device from the system start signal, and sends a flag to a microcomputer of the input / output control device. The device management control system according to claim 2, wherein the flag is released by access. 4. The state detection means detects at least three states of a power-on state, a standby state, and an operation state of the managed device, and activates the managed device when the standby state is detected, 3. The system according to claim 2, further comprising: means for determining whether the flag is generated within a predetermined time. 5. The device management control by remote access according to claim 4, wherein the operation mode control means includes a determination means for determining whether or not the release of the flag occurs within a predetermined time. system. 6. The apparatus according to claim 5, wherein the re-operation mode control unit further includes a reset unit that resets the managed device only when the flag is not cleared within a predetermined time. Equipment control system by remote access. 7. The operation mode control unit further includes a determination unit configured to determine whether the flag is cleared within a predetermined time after resetting the managed device. 7. The device management control system by remote access according to 6. 8. The operation mode control unit further includes a notification unit that notifies the LAN controller of an alarm only when the flag is not cleared within a predetermined time after resetting the management target device. 8. The device management control system by remote access according to claim 7, wherein: 9. The operation mode control means according to claim 1, wherein:
After notifying the controller of the alarm and transmitting the abnormality detection information to the outside, the system power of the managed device is turned off.
The apparatus management control system by remote access according to claim 8, wherein the FF is performed. 10. The operation mode control means, after turning off the system power supply of the device to be managed, uses a power ON means of an input / output control device operated by an auxiliary power supply prepared separately, and again operates the device to be managed. 10. The device management control system by remote access according to claim 9, wherein the system power supply is turned on. 11. The receiving means has a modem controller, and cancels the flag by accessing a microcomputer of the input / output control device when a ringing signal of the modem controller is in a non-detection state. The device management control system by remote access according to claim 2. 12. The operation mode control unit includes: a determination unit that determines that a ringing signal of the modem controller continues for a predetermined time; and a start-up of the managed device when a standby state is detected by the state detection unit. And determining means for determining whether or not the release of the flag occurs within a predetermined time.
2. The device management control system by remote access according to 1. 13. The re-operation mode control means further comprises:
13. The system according to claim 12, further comprising a reset unit configured to reset the managed device only when the flag is not cleared within a predetermined time. 14. The operation mode control means further comprises a determination means for determining whether or not the flag is cleared within a predetermined time after resetting the managed device. 14. A device management control system by remote access according to claim 13. 15. The operation mode control unit according to claim 14, wherein the operation mode control unit further ends the process if the flag is not cleared within a predetermined time after resetting the managed device. Equipment control system by remote access. 16. The device management control system by remote access according to claim 15, wherein said operation mode control means turns off a system power supply of said management target device when an abnormality of said management target device is detected. . 17. The operation mode control means, after turning off the system power supply of the device to be managed, using a power ON means of an input / output control device operated by an auxiliary power supply prepared separately, 17. The device management control system by remote access according to claim 16, wherein the system power supply is turned on. 18. The receiving means includes a LAN controller for generating a system start signal, sets a flag assigned to the input / output control device from the system start signal, and sends a flag to a microcomputer of the input / output control device. A remote controller comprising: a LAN controller for releasing the flag by access; and a modem controller for releasing the flag by accessing a microcomputer of the input / output control device when a ringing signal is in a non-detection state. The device management control system by remote access according to claim 2, further comprising means.