JP2591457B2 - Data line termination device management method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a monitor unit of the data terminal equipment in a data network unit provided in correspondence, monitoring the signal value of the signal between the data terminal equipment and data circuit-terminating equipment (monitor) Also, the present invention relates to a data line terminating device management system in which a management device that manages a plurality of data line terminating devices based on the signal value detects a failure.

[0002]

2. Description of the Related Art Conventionally, in order to detect a failure, a data line terminating device provided for a data terminal device includes:
A monitor unit for monitoring the signal value of a signal between the data terminal device and the data line terminating device and transmitting the signal value to the management device is provided.
In a management device, a signal value sent from a data line terminating device is displayed, and an administrator detects a failure by looking at the display.

[0003]

As described above, in the related art, since the administrator detects a failure by looking at the displayed signal value, there is a problem that the occurrence of the failure may be overlooked.

[0004]

Japanese Patent Laid-Open Publication No. Sho 59-6735 discloses a technique in which a fault occurring in a remote device is detected by an operating power supply control device and transmitted to a central processing unit.

By combining the technique described in Japanese Patent Application Laid-Open No. Sho 59-6735 with the above-mentioned conventional technique, a signal value monitored by a monitor unit in a data line termination device is displayed on a management unit. In addition, it is possible to avoid overlooking the occurrence of a failure, but there is a problem that the communication amount between the management device and the data line terminating device increases, and the management device and the data line terminating device are connected by a packet line. When connected, there is a problem that the billing amount increases.

[0007] Therefore, purpose is the present invention, without increasing the amount of communication between the management device and the data circuit-terminating equipment can be displayed on the management device a signal value as required, and overlook the occurrence of a failure It is an object of the present invention to provide a data line terminating device management system which does not require any problem.

[0008]

[0009]

SUMMARY OF THE INVENTION According to the present invention, there is provided a communication system, comprising:
It can be displayed on the management device a signal value as required, and to be able to eliminate the overlook of failure, each
Data terminal provided for each data terminal device and corresponding
Modulates the transmission signal from the device and decodes the data of the partner data terminal device.
Data terminal to the data line terminating device.
The received signal sent from the device's data line termination
A communication unit for demodulating and transmitting the data to the corresponding data terminal device.
Data line terminating devices, and the respective data line terminating devices.
In the system including a management apparatus that manages, each
The data line terminating equipment is the data terminal equipment corresponding to its own equipment.
Monitor the signal value of the signal between the device and the communication unit in the device
After the display start instruction is sent from the management device.
Monitor only during the period until the display end instruction is sent
Monitor for transmitting the signal value of the signal to the management device
And a signal value of a signal monitored by the monitor unit.
A second failure detection unit for detecting a failure in the management device;
Display start instruction is sent from the
During the period other than the period until the second failure detection
When a failure is detected, an alarm is sent to the management device
After the display start instruction is sent from the management device.
The period until the display end instruction is sent is the second
Even if the failure detection unit detects a failure, the management device
Alarm notification unit that suppresses alarm notifications
Wherein the management apparatus includes a display unit, the table in the own device
The data line terminator that starts displaying the signal value on the display
When instructed, the data line termination device
To send a display start instruction, and send a signal to the display unit in the own device.
The data line terminating device that terminates the display of the signal value is instructed
The display is terminated for that data line termination device.
A monitor control unit that transmits an instruction, said data circuit-terminating instrumentation
Monitor that displays the signal value sent from the
Data management unit and the data line termination device.
A first failure detection unit that detects a failure based on the signal value;
When a fault is detected by the first fault detection unit,
Alarm notification from the alarm notification unit
More equipped with an alarm management unit that issues an alarm
It is.

[0010]

[0011]

In the above arrangement, the display unit in the management device is
The data line termination device to start displaying the signal value is specified.
The monitor control unit in the management device
Sends a display start instruction to the
To indicate the data line terminating device that terminates the display of
To instruct the data line terminating device to end the display.
Send

[0012] When a display start instruction is sent from the monitor control unit, the monitor unit in the data line terminating apparatus monitors.
The signal value of the current signal is sent to the
Then , transmission of the signal value is stopped.

The alarm notification unit in the data line terminal receives a display start instruction from the monitor control unit.
Until the display end instruction is sent , the alarm is not notified to the management device even if the second failure detection unit detects a failure.

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 on the display unit. Then, it is determined whether or not a failure has occurred.

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

As described above, the display start instruction and the display end instruction of the signal value are transmitted to the management apparatus to the data line terminating apparatus.
A monitor control unit is provided to send a display start
During the period until the indication end instruction is sent , the alarm notification from the data line terminating device to the management device is suppressed , and an alarm is issued based on the detection result of the first failure detection unit in the management device. 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 terminating device, and the failure occurrence can be prevented from being overlooked.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described in detail with reference to the drawings.

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

The management device 1 and each data line terminating device 3
1-3-n and 4-1 through 4-n are connected, for example, via a packet switching network.

The data terminal devices 2-1 to 2-n are respectively connected to data line terminating devices 3-1 to 3-n and 4-1 to 4-n.
To send and receive data to and 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
Connected to the data line terminating devices 3-1 to 3-n via the S232C interface,
-N is connected to the data line terminators 4-1 to 4-n via, for example, an RS232C interface.

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, an alarm management unit 18,
And

The data line terminating device 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 have the same configuration as the data line terminating device 3-n.

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

The communication section 31 modulates a signal from the data terminal 2-n and sends it to the data line termination 4-n, and demodulates a signal from the data line termination 4-n to demodulate the signal from the data terminal 2-n. n and the like.

The monitor section 32 has the following functions.

A function of 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 unit 31

When a display start instruction is sent from the management device 1, a suppression instruction is given to the alarm notification unit 34,
A function of issuing a suppression release 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 signal value of the monitored ER signal is transmitted to the management device 1 and passed to the second failure detection unit 33. In other periods, the function of passing the signal value of the monitored ER signal to the second fault detection unit 33

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

The alarm notification unit 34 detects the occurrence of a failure by the second failure detection unit 33 during the period other than the period from the time when the suppression instruction is given by the monitor unit 32 to the time when the suppression cancellation instruction is given. A function of not performing an alarm notification to the management device 1 even when the second failure detection unit 33 detects a failure during a period from when the suppression instruction is issued to when the suppression cancellation instruction is issued. Having.

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

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

The monitor control unit 12 transmits a display start instruction to the data line termination device when a display start instruction including information indicating a data line termination device for displaying a signal value is input from the input unit 11. At the same time, a function of activating 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 for ending the display of the signal value are input from the input unit 11. 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 is provided.

The monitor management unit 14 controls the data line terminators 3-1 to 3-n and 4-1 to 4-n via the packet switching network.
n has a function of displaying the signal value of the ER signal sent from the display unit 15 on the display unit 15.

The first fault detecting section 16 is connected to the data line terminating devices 3-1 to 3-n, 4-1 to 4-1 via the packet switching network.
4-n has a function of determining whether a failure has occurred based on the signal value of the ER signal transmitted from 4-n.

The OR circuit 17 includes a data line terminator 3
1 to 3-n, 4-1 to 4-n, and the failure notification from the first failure detection unit 16 to the alarm management unit 1.
8 is provided.

The alarm management section 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 flowchart showing an example of processing of the monitor management unit 14, FIG. 3 is a flowchart showing an example of processing of the first failure detection unit 16, FIG. 4 is a flowchart showing an example of processing of the monitor unit 32, and FIG. FIG. 6 is a flowchart showing a processing example of the second failure detecting unit 33, and FIG. 6 is a flowchart showing a processing example of the alarm notifying unit 34. The operation of this embodiment will be described below with reference to the drawings.

First, the data line terminating devices 3-1 to 3-
Operations of Management Device 1 and Data Line Terminating Devices 3-1 to 3-n, 4-1 to 4-n When Display Start Instruction Is Not Instructed for Any of n, 4-1 to 4-n The operation of the data line termination device 3-n will be described as an example.

The monitor unit 3 in the data line termination device 3-n
2, as shown in FIG. 4, when the display start instruction is not issued (NO in step S21), the data terminal device 2-
n, and the signal value of the ER signal of the RS232C interface between the communication unit 31 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 the present 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.

When the signal value of the ER signal is passed from the monitor unit 32, as shown in FIG.
(YES in step S31), it is determined whether a failure has occurred based on the signal value (step S32). That is, when the signal value of the ER signal is a signal value corresponding to the ER signal = ON, it is determined that the signal is normal, and the 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
(Step S33 is YES) is the second failure detection unit 33
Notifies the alarm notifying unit 34 that a failure has occurred (step S34), and returns to step S31 if it is determined that a failure has not occurred.

As shown in FIG. 6, the alarm notifying section 34 is notified of the occurrence of a fault from the second fault detecting section 33.
(Step S46 is YES), it is determined whether or not the suppression flag F for controlling whether or not to issue an alarm notification to the management device 1 is "0" (step S4).
7). In this embodiment, when the suppression flag F = "0", an alarm notification is performed, and when the suppression flag F = "1", no alarm notification is performed.

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

Therefore, in the case of this example, the alarm notification unit 3
No. 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, via the packet transmission / reception unit 13 and the OR circuit 17 in the management device 1, the alarm management unit. 18 is notified.

Thus, 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, a process when a display start instruction is transmitted from the management device 1 to the data line terminating device 3-n will be described.

The administrator operates the data line terminating devices 3-1 to 3-3.
For example, when the user wants 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, the 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 a 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-
n, and sends a display start instruction to n.

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

As shown in FIG. 6, the alarm notification section 34 sets the suppression flag F to "1" when the suppression instruction is notified from the monitor section 32 (step S42: YES) (step S43). As a result, even after the occurrence of a failure is notified from the second failure detection unit 33, 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 started by the monitor control unit 12, the monitor management unit 14 starts the processing shown in FIG. 2 and receives the signal value transmitted from the monitor unit 32 in the data line termination 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 a stop instruction is given from the monitor control unit 12.
(Until step S3 becomes YES), that is, until the administrator inputs a display end instruction from the input unit 11 repeatedly.

When activated by the monitor controller 12, the first failure detector 16 starts the processing shown in FIG.
When the signal value transmitted from the monitor unit 32 in the data line terminating device 3-n is received (YES in step S11),
It is determined whether or not a failure has occurred based on the received signal value (step S12).
(Step S13 is YES), the process of notifying the alarm management unit 18 of the occurrence of the failure (Step S14) is performed until a stop instruction is added from the monitor control unit 12 (until Step S15 becomes YES), that is, the administrator. Are repeated until the user inputs a display end instruction from the input unit 11. Here, the first failure detecting 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 transmitted from the data line termination device 3-n.
Since it is known to be -n, when notifying the alarm management unit 18 of the occurrence of the fault, the information indicating the data line terminating device 3-n is also notified.

When the information indicating the occurrence of a fault and the information indicating the data line terminating device 3-n is notified from the first fault detecting unit 16 via the OR circuit 17, the alarm managing unit 18 turns the data line terminating device 3-n. Raises an alarm indicating that a fault has been detected.

In the data line terminating devices other than the data line terminating devices 3-1 to 3-n, as described above, when the second failure detecting unit in the own device detects a failure, the management device 1 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 the switch 7, an alarm indicating that a failure has been detected at the transmission source is issued in the same manner as described above.

Next, the operation in the case where the monitor section 32 in the data line terminating device 3-n terminates the display of the currently monitored signal value on the display section 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 sets the monitor management unit 14 and the first failure detection unit 1
6 and outputs a stop instruction to the data line terminating device 3 via the packet transmitting / receiving unit 13 and 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 (FIG. 2, step S3: YE
S), the process ends.

Also, when a stop instruction is given from the monitor control unit 12 (FIG. 3, step S15 is YES), the first failure detection unit 16 ends its processing.

The monitor unit 3 in the data line termination device 3-n
When receiving the display end instruction from the management device 1 (FIG. 4, step S27 is YES), the control unit 2 issues a suppression release instruction to the alarm notification unit 34 (step S28), and thereafter returns to the processing of step S21.

When the alarm notification section 34 receives the suppression release instruction from the monitor section 32 (FIG. 6, step S44 is YE).
S), the suppression flag F is set to “0” (Step S4)
5).

Therefore, thereafter, the alarm notifying section 34
When the occurrence of a failure is notified from the second failure detection unit 33, an alarm is notified 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, the first fault detecting section for detecting a fault based on the signal value sent from the monitor section of the data line terminating apparatus in the management apparatus, Since the apparatus includes the alarm management unit that issues an alarm when a failure is detected by the first failure detection unit, there is an effect that a failure occurrence is not overlooked.

Further, according to the present invention, an instruction to start displaying a signal value and an instruction to end the display are given to the management device to the data line terminating device.
Provide a monitor control unit to send and send a display start instruction
During the period from when the display termination instruction is sent, even if the second failure detection means in the data line termination device detects the occurrence of a failure, the alarm notification from the data line termination device to the management device is suppressed. When the first failure detecting means detects the occurrence of a failure based on the signal value displayed by the device, an alarm is issued, so that the communication volume between the management device and the data line terminating device is reduced. Without increasing
As a result, there is an effect that the signal value can be displayed on the management device as needed, and the occurrence of a failure can be overlooked.

[Brief description of the drawings]

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

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

FIG. 3 is a flowchart illustrating a processing example of a first failure detection unit 16;

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

FIG. 5 is a flowchart illustrating 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 fault detection part 17 ... OR circuit 18 ... Alarm management part 2-1 to 2- n, 5-1 to 5-n data terminal devices 3-1 to 3-n, 4-1 to 4-n data line termination devices 31 communication units 32 monitor units 33 second failure detection units 34 ... Alarm notification unit 35 ... Packet transmission / reception unit

Claims (2)

(57) [Claims] A data terminal device provided for each data terminal device;
Modulates the transmission signal from the corresponding data terminal equipment to
To the data terminal of the data terminal and
Sent from the data line terminator of the partner data terminal
The corresponding data terminal device by demodulating the received signal
A data line terminating device having a communication unit for sending data to the
And a management device for managing the data line termination device.
In the above, each of the data line terminating devices communicates with a data terminal device corresponding to the device itself and the communication within the device.
Monitor the signal value of the signal between the control unit and the
The display end instruction is sent after the display start instruction is sent.
The signal value of the signal being monitored is
A monitoring unit for transmitting to the management device, and a failure based on a signal value of a signal monitored by the monitoring unit.
A second failure detection unit for detecting harm, and display after a display start instruction is sent from the management device;
Except for the period until the end instruction is sent, the second
When the failure detection unit detects a failure, the management device is alerted.
And a display start instruction is sent from the management device.
From the time it arrives until the display end instruction is sent,
Even if the second failure detection unit detects a failure,
An alarm that suppresses alarm notification to the management device
A notification unit, wherein the management device includes a display unit, and data for starting display of a signal value on the display unit in the management device.
When the data line termination device is instructed, the data
Sends a display start instruction to the line termination device, and
Data line termination for ending the display of the signal value on the display unit
When the device is instructed, the data line termination device
And a monitor control unit for transmitting a display end instruction to the data line terminating device.
A monitor management unit to be displayed on a display unit, and a monitor management unit based on a signal value sent from the data line termination device.
A first failure detection unit that detects a fault had, by a failure in the first failure detection unit detects, 及
Alarm notification from the alarm notification unit
A data line terminating device management method , further comprising an alarm management unit for issuing an alarm. Wherein said each data line terminal, the data line terminal management method according to claim 1, characterized in that it is connected to the management device via the packet line.