JPH01190051A - Alarm transfer system - Google Patents

Alarm transfer system

Info

Publication number
JPH01190051A
JPH01190051A JP63014305A JP1430588A JPH01190051A JP H01190051 A JPH01190051 A JP H01190051A JP 63014305 A JP63014305 A JP 63014305A JP 1430588 A JP1430588 A JP 1430588A JP H01190051 A JPH01190051 A JP H01190051A
Authority
JP
Japan
Prior art keywords
cpu
pulse pattern
fault
circuit
outputs
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP63014305A
Other languages
Japanese (ja)
Inventor
Hitoshi Yokota
横田 仁
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NEC Corp filed Critical NEC Corp
Priority to JP63014305A priority Critical patent/JPH01190051A/en
Publication of JPH01190051A publication Critical patent/JPH01190051A/en
Pending legal-status Critical Current

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  • Maintenance And Management Of Digital Transmission (AREA)

Abstract

PURPOSE:To detect a CPU fault at the sender side from the reception side without transferring a CPU faulty alarm through other line by transferring a fixed pulse pattern as a serial data output at CPU fault. CONSTITUTION:A fault detection circuit 3 monitoring the state of a CPU 1 outputs a CPU fault alarm signal to a pulse pattern generating circuit 4 and a selection circuit 5 at CPU fault. The pulse pattern generating circuit 4 is started by a CPU fault alarm signal, a pulse pattern representing the CU fault alarm is outputted and the output becomes other input to the selection circuit 5. The selection circuit 5 receiving a CPU fault alarm signal outputs and selects a pulse pattern from the pulse pattern generating circuit 4 and gives an output to the reception side.

Description

【発明の詳細な説明】 産業上の利用分野 本発明は、アラーム転送方式に関し、特にCPUを用い
たシリアルデータ通信に於けるCPU障害のアラーム転
送に関する。
DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an alarm transfer system, and more particularly to alarm transfer of a CPU failure in serial data communication using a CPU.

従来の技術 従来の技術としては、CPu障害検出回路の出力を別出
力端子として用意し、受信側のCPuにて送信側のCP
U障害を個別なアラーム情報としてとりこむ方式が提案
されている。
Conventional technology In the conventional technology, the output of the CPU fault detection circuit is prepared as a separate output terminal, and the CPU on the receiving side outputs the output from the CPU on the transmitting side.
A method has been proposed in which U failures are captured as individual alarm information.

第2図は従来技術によるアラーム転送方式のブロック図
である0図において、1はCPU 、2はシリアルイン
タフェース回路、3は障害検出回路をそれぞれ示す。
FIG. 2 is a block diagram of a conventional alarm transfer system. In FIG. 0, 1 represents a CPU, 2 represents a serial interface circuit, and 3 represents a failure detection circuit.

発明が解決しようとする課題 上述した従来のアラーム転送方式では、CPU Fl[
害を転送するために1本則の信号線を用意する必要があ
るという欠点があった。
Problems to be Solved by the Invention In the conventional alarm transfer method described above, the CPU Fl[
There was a drawback that it was necessary to prepare one signal line in order to transfer the damage.

本発明は従来の上記実情に鑑みてなされたものであり、
従って本発明の目的は、従来の技術に内在する上記欠点
゛を解消し、別線にてCPUの障害アラームを転送する
ことなく受信側にて送信側のCPU障害を容易に検出す
ることを可能とした新規なアラーム転送方式を提供する
ことにある。
The present invention has been made in view of the above-mentioned conventional situation,
Therefore, an object of the present invention is to eliminate the above-mentioned drawbacks inherent in the conventional technology, and to enable the receiving side to easily detect a CPU failure on the transmitting side without transmitting the CPU failure alarm over a separate line. The purpose of this invention is to provide a new alarm transfer method.

課題を解決するための手段 上記目的を達成する為に、本発明に係るアラーム転送方
式は、情報転送用のシリアルデータ出力上で固定パルス
パターンによりCPU障害を転送するためにCPUの障
害検出により起動されるパルスパターン発生回路と、C
PU障害時にはシリアル出力としてCPUからのデータ
ではなく固定パルスパターン(CPU障害を示すパター
ン)を出力するための選択回路とを有している。
Means for Solving the Problems In order to achieve the above object, the alarm transfer method according to the present invention is activated by the detection of a CPU failure in order to transfer the CPU failure by a fixed pulse pattern on the serial data output for information transfer. a pulse pattern generation circuit, and C
It has a selection circuit for outputting a fixed pulse pattern (a pattern indicating a CPU failure) instead of data from the CPU as a serial output when a CPU failure occurs.

実施例 次に本発明をその好ましい一実施例について図面を参照
して具体的に説明する。
Embodiment Next, a preferred embodiment of the present invention will be specifically explained with reference to the drawings.

第1図は本発明の一実施例を示すブロック構成図である
FIG. 1 is a block diagram showing one embodiment of the present invention.

第1図を参照するに、CPU1はシリアルイ〉゛タフエ
ース回路2にデータを転送し、シリアルインタフェース
回路2の出力は、選択回路5の一方の入力となっており
通常選択回路はこの信号を選択して出力している。
Referring to FIG. 1, the CPU 1 transfers data to the serial interface circuit 2, and the output of the serial interface circuit 2 is one input of the selection circuit 5, and the selection circuit normally selects this signal. is output.

又、CPU1の状態を監視している障害検出回路3はC
PU障害時にはCPU障害アラーム信号をパルスパター
ン発生回路4と選択回路5に対して出力する。CPU障
害アラーム信号によりパルスパターン発生回路4は起動
をかけられ、CPU障害アラームを示すパルスパターン
を出力し、この出力は選択回路5の他方の入力となる。
In addition, the fault detection circuit 3 that monitors the state of the CPU 1 is connected to C
When a PU failure occurs, a CPU failure alarm signal is output to the pulse pattern generation circuit 4 and the selection circuit 5. The pulse pattern generation circuit 4 is activated by the CPU failure alarm signal and outputs a pulse pattern indicating the CPU failure alarm, and this output becomes the other input of the selection circuit 5.

CPU III害アラーム信号を受けた選択回路5はパ
ルスパターン発生回路4からのパルスパターンを出力と
して選択し、受信側l\比出力る。
Upon receiving the CPU III harm alarm signal, the selection circuit 5 selects the pulse pattern from the pulse pattern generation circuit 4 as an output, and outputs the pulse pattern on the receiving side.

発明の詳細 な説明したように、本発明によれば、CPU Fll待
時は、固定パルスパターンをシリアルデータ出力として
転送することにより、別線にてCPU障害アラームを転
送することなく受信側にて送信側のCPU障害を検出で
きる効果が得られる。
As described in detail, according to the present invention, when the CPU is on full standby, by transmitting a fixed pulse pattern as serial data output, the CPU failure alarm can be transmitted on the receiving side on a separate line. This provides the effect of detecting a CPU failure on the transmitting side.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は本発明の一実施例を示すブロック構成図、第2
図は従来方式のブロック図である。 1・・・CPll 、2・・・シリアルインタフェース
回路、3・・・障害検出回路、4・・・パルスパターン
発生回路、5・・・選択回路
FIG. 1 is a block diagram showing one embodiment of the present invention, and FIG.
The figure is a block diagram of a conventional system. 1... CPll, 2... Serial interface circuit, 3... Fault detection circuit, 4... Pulse pattern generation circuit, 5... Selection circuit

Claims (1)

【特許請求の範囲】[Claims] CPUを用いたデータ転送に於けるCPU障害アラーム
転送方式に於いて、CPUと、該CPUのデータをシリ
アルデータに変換して出力するシリアルインタフェース
回路と、前記CPUの障害を検出し障害アラーム信号を
出力する障害検出回路と、該障害アラーム信号をトリガ
として障害パターン信号を出力するパルスパターン発生
回路と、前記障害アラーム信号の論理により前記シリア
ルインタフェース回路の出力と前記パルスパターン発生
回路の出力の一方を選択して出力する選択回路とを有す
ることを特徴とするアラーム転送方式。
In a CPU failure alarm transfer method for data transfer using a CPU, a CPU, a serial interface circuit that converts the data of the CPU into serial data and outputs it, and a circuit that detects a failure of the CPU and issues a failure alarm signal. a fault detection circuit that outputs a fault detection circuit; a pulse pattern generation circuit that outputs a fault pattern signal using the fault alarm signal as a trigger; and a pulse pattern generation circuit that outputs a fault pattern signal using the fault alarm signal as a trigger; An alarm transfer method characterized by having a selection circuit that selects and outputs.
JP63014305A 1988-01-25 1988-01-25 Alarm transfer system Pending JPH01190051A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP63014305A JPH01190051A (en) 1988-01-25 1988-01-25 Alarm transfer system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP63014305A JPH01190051A (en) 1988-01-25 1988-01-25 Alarm transfer system

Publications (1)

Publication Number Publication Date
JPH01190051A true JPH01190051A (en) 1989-07-31

Family

ID=11857389

Family Applications (1)

Application Number Title Priority Date Filing Date
JP63014305A Pending JPH01190051A (en) 1988-01-25 1988-01-25 Alarm transfer system

Country Status (1)

Country Link
JP (1) JPH01190051A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0368240A (en) * 1989-08-07 1991-03-25 Fujitsu Ltd Fault detecting method for centralized monitor system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0368240A (en) * 1989-08-07 1991-03-25 Fujitsu Ltd Fault detecting method for centralized monitor system

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