JPH07152607A - Management system for data line terminating device - Google Patents

Abstract

PURPOSE:To display a signal value on a management device at need and to prevent fault occurrence from being overlooked without increasing the communication quantity between the management device and data line terminating device. CONSTITUTION:When an administrator wants to display the signal value, monitored by the monitor part 32 of the data line terminating device 3-n, at a display part 15, the administrator inputs a display start indication through an input part 11. This indication is sent to the data line terminating device 3-n through a packet switched network. Consequently, the data line terminating device 3-n sends the signal value monitored by the monitor part 32 to the management device 1 and suppresses alarm information to the management device 1 even if a fault detection part 33 detects a fault. A fault detection part in the management device 1 judges whether or not a fault is generated from the signal value sent from the data line terminating device 3-n and an alarm management part 18 generates an alarm once the fault detection part 16 detects the fault.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention monitors a signal value of a signal between a data terminal device and a data circuit terminating device in a monitor section in a data circuit terminating device provided for a data terminal device, The present invention relates to a data line terminator management method for detecting a failure in a management device that manages a plurality of data line terminators based on signal values.

[0002]

2. Description of the Related Art Conventionally, in order to detect a failure, in a data line terminal device provided for a data terminal device,
A monitor unit for monitoring the signal value of the signal between the data terminal device and the data circuit terminating device and transmitting it to the management device is provided.
In the management device, the signal value sent from the data circuit terminating device is displayed, and the manager looks at the display to detect the occurrence of a failure.

[0003]

As described above, conventionally, since the administrator has detected the failure by looking at the displayed signal value, there is a problem that the failure may be overlooked.

An object of the present invention is to provide a data line terminating device management system capable of eliminating oversight of occurrence of a failure.

Incidentally, Japanese Patent Laid-Open No. 59-6735 discloses a technique for causing a power supply control device for operation to detect a fault occurring in a remote device and transmitting it to a central processing unit.

By combining the technique described in Japanese Patent Laid-Open No. 59-6735 and the above-mentioned conventional technique, the signal value monitored by the monitor unit in the data line termination device is displayed on the management unit. Moreover, it is possible to eliminate an oversight of the occurrence of a failure, but there is a problem that the communication volume between the management device and the data line terminal device increases, and the management device and the data line terminal device are connected by a packet line. When connected, there is a problem that the billing amount increases.

Another object of the present invention is to allow a signal value to be displayed on the management device as needed without increasing the amount of communication between the management device and the data line terminating device, and to overlook the occurrence of a failure. The purpose of the present invention is to provide a data line terminator management system.

[0008]

According to the present invention, in order to eliminate an oversight of occurrence of a failure, (A) a monitor unit in a data line terminating device provided corresponding to a data terminal device is provided with the data terminal device and the data line. In the data line terminating device management method, the signal value of the signal to and from the terminating device is monitored and transmitted to the management device, and the monitor management unit in the management device displays the signal value on the display unit. The apparatus includes a first fault detection unit that detects a fault based on a signal value from the monitor unit, and an alarm management unit that issues an alarm when the fault is detected by the first fault detection unit. It is a thing.

Further, according to the present invention, the signal value can be displayed on the management device as needed without increasing the amount of communication between the management device and the data line termination device, and the failure occurrence can be overlooked. (B) The management device includes a monitor control unit for instructing the data line termination device to start and stop displaying the signal value.
The data line termination device includes a second fault detection unit that detects a fault based on a signal value monitored by the monitor unit,
When the second failure detection unit detects a failure, an alarm is notified to the management device except for a period from the start of display to the end of display by the monitor control unit. An alarm notification unit that suppresses notification of an alarm to the management device is provided during a period from when the display start instruction is given by the monitor control unit to when the display end instruction is given, and the monitor unit displays the monitor control unit. Only during the period from the start instruction to the display end instruction, the monitored signal value is transmitted to the management device, and the alarm management unit issues an alarm when the alarm is notified from the alarm notification unit. It was done like this.

[0010]

In the configuration (A), the first failure detection unit in the management device detects a failure based on the signal value from the monitor unit, and the alarm management unit in the management device operates the first An alarm is issued when a failure is detected by the failure detection unit.

In the configuration of (B), when the signal value is displayed by the management device, the monitor control unit in the management device instructs the data line terminating device to start the display, and the signal value is displayed. When the display is to be ended, the display end is instructed.

The monitor unit in the data line terminal device sends the monitored signal value to the management device when the monitor control unit instructs the display start, and stops the transmission of the signal value when the display end is instructed. .

Further, when the monitor control unit gives an instruction to start the display, the alarm notifying unit in the data line terminating device causes the second fault detection unit to give a fault until the monitor control unit gives an instruction to stop the display. Even if it is detected, the alarm is not notified to the management device.

The monitor management unit in the management device displays the signal value sent from the data line termination device on the display unit, and the first failure detection unit displays the signal value sent from the data line termination device. Based on this, it is determined whether or not a failure has occurred.

The alarm management section issues an alarm when the first failure detection section detects a failure or when an alarm is notified from an alarm notification section in the data line terminating device.

As described above, the management device is provided with the monitor control unit for instructing the data line terminating device to start and stop displaying the signal value, and the period from the start of display to the end of display is Since the alarm notification from the data line terminating device to the management device is suppressed and the alarm is issued based on the detection result of the first failure detection unit in the management device, the management device and the data line terminating device are It is possible to display the signal value on the management device as needed without increasing the amount of communication between them, and to eliminate oversight of the occurrence of a failure.

[0017]

Embodiments of the present invention will now be described in detail with reference to the drawings.

FIG. 1 is a block diagram of an embodiment of the present invention, which includes a management device 1 and a plurality of data terminal devices 2-1 to 2-.
n, 5-1 to 5-n and a plurality of data line terminators 3-
1 to 3-n and 4-1 to 4-n.

Management device 1 and each data line termination device 3-
For example, 1 to 3-n and 4-1 to 4-n are connected via a packet switching network.

The data terminal equipments 2-1 to 2-n are data line terminators 3-1 to 3-n and 4-1 to 4-n, respectively.
Data is transmitted / received to / from the data terminal devices 5-1 to 5-n via the.

The data terminal devices 2-1 to 2-n are, for example, R
The data terminal devices 5-1 to -5 are connected to the data line terminal devices 3-1 to 3-n via the S232C interface.
-N is connected to the data line terminators 4-1 to 4-n via the RS232C interface, for example.

The management device 1 includes an input unit 11 such as a keyboard.
A monitor control unit 12, a packet transmission / reception unit 13, a monitor management unit 14, a display unit 15 such as a CRT, a first failure detection unit 16, an OR circuit 17, and an alarm management unit 18.
It has and.

The data line terminator 3-n includes a communication unit 31.
A monitor unit 32, a second failure detection unit 33, an alarm notification unit 34, and a packet transmission / reception unit 35. The other data line terminating devices also have the same configuration as the data line terminating device 3-n.

Next, the function of each unit in the data line terminating device 3-n will be described.

The communication unit 31 modulates the signal from the data terminal equipment 2-n and sends it to the data line terminating equipment 4-n, demodulates the signal from the data line terminating equipment 4-n and demodulates it. It has a function of sending to the n.

The monitor section 32 has the following functions.

A function for monitoring the signal value of the ER (data terminal ready) signal of the RS232C interface between the data terminal device 2-n and the communication section 31.

When a display start instruction is sent from the management device 1, a suppression instruction is given to the alarm notification section 34,
A function for giving an alarm canceling instruction to the alarm notification unit 34 when a display end instruction is sent.

During the period from when the display start instruction is sent to when the display end instruction is sent, the monitored signal value of the ER signal is sent to the management device 1 and is also passed to the second failure detection section 33. A function of passing the signal value of the monitored ER signal to the second failure detection unit 33 during the other periods.

The second fault detector 33 has a function of judging whether or not a fault has occurred based on the signal value of the ER signal passed from the monitor 32.

The alarm notifying unit 34 detects the occurrence of a fault by the second fault detecting unit 33 except during the period from when the monitor unit 32 issues the restraining instruction until when the restraining cancel instruction is issued. A function of notifying the management device 1 of an alarm during the period from when the suppression instruction is issued to when the suppression cancellation instruction is issued, even if the second failure detection unit 33 detects a failure occurrence. Have.

The packet transmitting / receiving unit 35 has a function of transmitting / receiving data to / from the management device 1 via the packet switching network.

Next, the function of each unit in the management apparatus 1 will be described.

The monitor control section 12 transmits a display start instruction to the data line terminator by inputting a display start instruction including information indicating the data line terminator for displaying the signal value from the input section 11. At the same time, by inputting a function to activate the monitor management unit 14 and the first failure detection unit 16 and a display end instruction including information indicating the data line terminating device to end the display of the signal value from the input unit 11, It has a function of transmitting a display end instruction to the data line terminating device and stopping the monitor management unit 14 and the first failure detection unit 16.

The monitor management unit 14 is provided with the data line terminal devices 3-1 to 3-n, 4-1 to 4-through the packet switching network.
The display unit 15 has a function of displaying the signal value of the ER signal sent from the n.

The first failure detection unit 16 is a data line terminal device 3-1 to 3-n, 4-1 to 4-1 via a packet switching network.
It has a function of judging whether or not a failure has occurred based on the signal value of the ER signal sent from 4-n.

The OR circuit 17 is a data line terminal device 3-
The alarm management unit 1 sends alarm notifications from 1 to 3-n and 4-1 to 4-n and a failure notification from the first failure detection unit 16.
8 has the function of outputting.

The alarm management unit 18 has a function of issuing an alarm in response to an alarm notification and a failure notification from the OR circuit 17.

FIG. 2 is a flow chart showing an example of processing of the monitor management unit 14, FIG. 3 is a flow chart showing an example of processing of the first failure detection unit 16, FIG. 4 is a flow chart showing an example of processing of the monitor unit 32, and FIG. FIG. 6 is a flow chart showing a processing example of the second failure detection unit 33, and FIG. 6 is a flow chart showing a processing example of the alarm notification unit 34. The operation of the present embodiment will be described below with reference to the drawings.

First, the data line terminators 3-1 to 3-3-
Operation of the management device 1 and the data line termination devices 3-1 to 3-n, 4-1 to 4-n when the display start instruction is not issued to any of n, 4-1 to 4-n The operation of the data line terminator 3-n will be described as an example.

Monitor unit 3 in the data line terminating device 3-n
2, when the display start instruction is not given (NO in step S21) as shown in FIG. 4, the data terminal device 2-
The signal value of the ER signal of the RS232C interface between n and the communication unit 31 is monitored (step S22), and the monitored signal value is passed to the second failure detection unit 33 (step S23). In this embodiment, it is assumed that the data terminal devices 2-1 to 2-n and 5-1 to 5-n are always powered on and the ER signal is ON.

As shown in FIG. 5, the second fault detecting section 33 receives the signal value of the ER signal from the monitor section 32.
(YES in step S31), it is determined based on the signal value whether or not a failure has occurred (step S32). That is, when the signal value of the ER signal is a signal value corresponding to ER signal = ON, it is determined to be normal, and ER signal = OF
If the signal value corresponds to F, it is determined that a failure has occurred.

When it is determined that a failure has occurred
(YES in step S33) is the second failure detection unit 33.
Notifies the alarm notification unit 34 of the occurrence of a failure (step S34), and when it determines that no failure has occurred, returns to step S31.

As shown in FIG. 6, the alarm notifying unit 34 notifies the alarm occurrence from the second failure detecting unit 33.
(YES in step S46), it is determined whether or not the suppression flag F for controlling whether or not to give an alarm notification to the management device 1 is "0" (step S4).
7). In this embodiment, if the suppression flag F = “0”, an alarm notification is given, and if the suppression flag F = “1”, no alarm notification is given.

Here, the suppression flag F is set to "0" in the initial state (step S41), and the suppression instruction is notified from the monitor section 32 (YES in step S42).
S, S43) is set to "1", and the suppression instruction from the monitor unit 32 is notified by the management device 1 outputting a display start instruction (FIG. 4, step S21). , S24), in the case of this example, the management device 1
Since the display start instruction is not output from, the suppression flag F is "0" (YES in step S47).

Therefore, in this example, the alarm notification unit 3
4 sends an alarm notification to the management device 1 via the packet transmitting / receiving unit 35 (step S48). still,
This alarm notification includes information indicating that the data line terminating device 3-n is the transmission source.

The alarm notification from the data line terminating device 3-n is notified to the management device 1 via the packet switching network, and further, the alarm management unit via the packet transmission / reception unit 13 and the OR circuit 17 in the management device 1. 18 will be notified.

As a result, the alarm management unit 18 issues an alarm indicating that a failure has been detected in the data line terminating device 3-n based on the information indicating the transmission source included in the alarm notification.

Next, the processing when the display start instruction is transmitted from the management device 1 to the data line termination device 3-n will be described.

The administrator is the data line terminators 3-1 to 3-3.
-N, 4-1 to 4-n, for example, when it is desired to display the signal value of the ER signal monitored by the monitor unit 32 in the data line terminating device 3-n on the display unit 15, a display start instruction is issued. Is input from the input unit 11. The display start instruction also includes information indicating the data line terminating device 3-n.

When the display start instruction is input from the input unit 11, the monitor control unit 12 activates the monitor management unit 14 and the first failure detection unit 16 and also via the packet transmission / reception unit 13 and the packet switching network. Data line terminator 3-
The display start instruction is transmitted to n.

Monitor unit 3 in the data line terminating device 3-n
As shown in FIG. 4, when the display start is received from the management device 1 (YES in step S21), the alarm notification is notified to the alarm notification unit 34 to suppress the alarm notification (step S24). After that, until the display end instruction is received (until step S27 becomes YES), the ER between the data terminal device 2-n and the communication unit 31.
The process of monitoring the signal value of the signal (step S25), transmitting the monitored signal value to the management device 1 and passing it to the second failure detection unit 33 (step S26) is repeated.

As shown in FIG. 6, the alarm notification unit 34 sets the suppression flag F to "1" (Step S43) when the suppression instruction is notified from the monitor unit 32 (YES in step S42). As a result, even if the second failure detection unit 33 subsequently notifies the failure occurrence, until the suppression flag F is set to "0" by the suppression cancellation instruction (step S
44, S45), the alarm notification unit 34 does not notify the management device 1 of an alarm.

When activated by the monitor control unit 12, the monitor management unit 14 starts the process shown in FIG. 2 and receives the signal value transmitted from the monitor unit 32 in the data line terminal device 3-n. Then, (YES in step S1), the process of displaying the signal value on the display unit 15 (step S2) is performed until the stop instruction is added from the monitor control unit 12.
This is repeated (until step S3 becomes YES), that is, until the administrator inputs a display end instruction from the input unit 11.

Further, the first failure detection section 16 starts the processing shown in FIG. 3 when it is started by the monitor control section 12.
When the signal value transmitted from the monitor unit 32 in the data line terminating device 3-n is received (YES in step S11),
By determining whether or not a failure has occurred based on the received signal value (step S12), the failure occurrence is detected.
(Step S13 is YES), the process of notifying the alarm management unit 18 of the occurrence of a failure (Step S14) is performed until a stop instruction is added from the monitor control unit 12 (until Step S15 is YES), that is, the administrator. Is repeated until the user inputs a display end instruction from the input unit 11. Here, the first failure detection unit 16 determines that the transmission source is the data line termination device 3 based on the information indicating the transmission source added to the signal value sent from the data line termination device 3-n.
Since it is known that the value is −n, when notifying the alarm management unit 18 of the occurrence of a failure, the information indicating the data line terminal device 3-n is also notified.

When the alarm management unit 18 is notified from the first failure detection unit 16 via the OR circuit 17 of information indicating the occurrence of a failure and the data line termination device 3-n, the data line termination device 3-n causes the alarm management unit 18 to operate. Raises an alarm indicating that a failure has been detected.

Incidentally, in the data line terminators other than the data line terminators 3-1 to 3-n, when the second fault detecting section in the own device detects a fault, the management device 1 is notified as described above. The alarm management unit 18 in the management device 1 sends an alarm notification to the packet transmission / reception unit 13 and the OR circuit 1.
When an alarm notification is added via 7, an alarm indicating that a failure has been detected at the transmission source is issued as described above.

Next, the operation when the monitor unit 32 in the data line terminator 3-n finishes displaying the currently monitored signal value on the display unit 15 will be described.

In this case, the administrator inputs a display end instruction including information indicating the data line terminating device 3-n from the input unit 11.

When this display end instruction is input, the monitor control unit 12 causes the monitor management unit 14 and the first failure detection unit 1 to operate.
6 outputs a stop instruction to the data transmission / reception unit 13 and the data line terminal 3 via the packet switching network.
A display end instruction is transmitted to -n.

The monitor management unit 14 receives a stop instruction from the monitor control unit 12 (YES in step S3 in FIG. 2).
S), the process ends.

Further, when the stop instruction is added from the monitor control unit 12 (YES in step S15 of FIG. 3), the first failure detection unit 16 also ends the processing.

Monitor unit 3 in the data line terminating device 3-n
When receiving the display end instruction from the management device 1 (FIG. 4, YES in step S27), the instruction 2 issues a suppression cancellation instruction to the alarm notification unit 34 (step S28), and then returns to the process of step S21.

When the alarm notification unit 34 receives the suppression cancellation instruction from the monitor unit 32 (YES in step S44 in FIG. 6).
S), the suppression flag F is set to "0" (step S4
5).

Therefore, after this, the alarm notification unit 34
When the second failure detection unit 33 notifies that a failure has occurred, the alarm notification is sent to the management device 1 via the packet transmission / reception unit 35 and the packet switching network.

[0066]

As described above, according to the present invention, in the management device, there is provided the first failure detecting section for detecting a failure based on the signal value sent from the monitor section of the data line terminating device, and the first failure detecting section. Since the first failure detection unit includes an alarm management unit that issues an alarm when a failure is detected, there is an effect that a failure occurrence is not overlooked.

Further, according to the present invention, the management device is provided with a monitor control unit for instructing the data line terminating device to start and stop displaying the signal value, and from the start of the display to the end of the display. The period is the second time in the data circuit terminating equipment.
Even if the failure detection means detects the occurrence of a failure, the alarm notification from the data line terminating device to the management device is suppressed, and the first failure detection means fails based on the signal value displayed on the management device. When an occurrence is detected, an alarm is issued, so that the signal value can be displayed on the management device as necessary without increasing the communication volume between the management device and the data line termination device, and a failure can occur. There is an effect that the oversight of the occurrence can be eliminated.

[Brief description of drawings]

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

FIG. 2 is a flowchart showing a processing example of a monitor management unit 14.

FIG. 3 is a flowchart showing a processing example of the first failure detection unit 16.

FIG. 4 is a flowchart showing a processing example of a monitor unit 32.

FIG. 5 is a flowchart showing a processing example of a second failure detection unit 33.

FIG. 6 is a flowchart showing a processing example of an alarm notification unit 34.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Management device 11 ... Input part 12 ... Monitor control part 13 ... Packet transmission / reception part 14 ... Monitor management part 15 ... Display part 16 ... 1st failure detection part 17 ... OR circuit 18 ... Alarm management part 2-1 to 2- n, 5-1 to 5-n ... Data terminal device 3-1 to 3-n, 4-1 to 4-n ... Data line terminating device 31 ... Communication unit 32 ... Monitor unit 33 ... Second fault detection unit 34 ... Alarm notification unit 35 ... Packet transmission / reception unit

Claims (4)

[Claims] 1. A monitor unit in a data circuit terminating device provided for a data terminal device monitors a signal value of a signal between the data terminal device and the data circuit terminating device and transmits it to a management device. In a data line termination device management system in which a monitor management unit in the management device displays the signal value on a display unit, the management device detects a failure based on a signal value from the monitor unit. And a fault management unit that issues an alarm when a fault is detected by the first fault detection unit. 2. The management device includes a monitor control unit for instructing the data line terminating device to start and stop displaying the signal value, and the data line terminating device is provided with a signal monitored by the monitor unit. A second failure detection unit that detects a failure based on a value, and when the second failure detection unit detects a failure, from the start of display to the end of display by the monitor control unit. An alarm notification for notifying an alarm to the management device except during the period, and for suppressing a notification of the alarm to the management device during a period from when the monitor control unit instructs the display start to when the display end is instructed. The monitor unit transmits the monitored signal value to the management device only during a period from when the monitor control unit instructs the display start to when the display end is instructed, Serial alarm management unit is configured by an alarm is notified from the alarm notifying unit, data circuit-terminating equipment management method according to claim 1, wherein the emitting alarm. 3. The data line terminator management system according to claim 2, wherein there are a plurality of said data line terminators. 4. The data line terminating device management system according to claim 3, wherein each of the data line terminating devices is connected to the management device via a packet line.