JPS5962247A - Method for detecting failed part of loop transmission system - Google Patents

Method for detecting failed part of loop transmission system

Info

Publication number
JPS5962247A
JPS5962247A JP57172652A JP17265282A JPS5962247A JP S5962247 A JPS5962247 A JP S5962247A JP 57172652 A JP57172652 A JP 57172652A JP 17265282 A JP17265282 A JP 17265282A JP S5962247 A JPS5962247 A JP S5962247A
Authority
JP
Japan
Prior art keywords
processing device
signal
received
transmission system
processors
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
JP57172652A
Other languages
Japanese (ja)
Inventor
Yasuhisa Masuo
増尾 泰央
Mamoru Hatakawa
幡川 守
Kazuhiko Mitsuo
満尾 一彦
Tatsuo Kondo
達夫 近藤
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.)
Panasonic Electric Works Co Ltd
Original Assignee
Matsushita Electric Works Ltd
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 Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP57172652A priority Critical patent/JPS5962247A/en
Publication of JPS5962247A publication Critical patent/JPS5962247A/en
Pending legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • H04L12/28Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/42Loop networks
    • H04L12/437Ring fault isolation or reconfiguration

Abstract

PURPOSE:To display a failed part of a line or the like, by transmitting a signal including an address from each device and displaying the received signal, when a signal transmitted from each processor is not received, in the transmission system where plural processors are connected in a loop. CONSTITUTION:A signal transmitted from a transmission circuit TX of the processors A-D is received at a receiving circuit RX and returned again to the processors A-D. A display device DA of the processor A has respectively display elements DA1-DD1 corresponding individually to the processors A-D, and it is the same for other devices. If an open wire takes place in a line la, since the signal transmitted from the processor A is not returned to a receiving circuit RXau, the signal representing the failure mode is transmitted and the singal representing similar failure mode including the own address is tranmitted to other processors B-D, these signals are received at each processor and displayed at a display circuit, allowing to specify the failed part.

Description

【発明の詳細な説明】 本発明は、ジークンfなどの複数の処理装置がループ状
に接続されて構成されるループ状伝送系において生じる
故障個所を検出する方法に関する。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for detecting a failure point that occurs in a loop-shaped transmission system configured by connecting a plurality of processing devices in a loop, such as a Je-Kun-F.

このようなループ状伝送系では、各処理装置を接続して
いる光ファイバなどのラインが断線して故障したとき、
伝送系全体の動作が休止してし寸う。したがってどの個
Ifrで断線して故障が生じたかを早急につかみ、可及
的に早く伝送系(l−榎旧壬せる必要がある。従来では
、谷処理装置がラインを介して1d号を受イdしている
か否かを調べて白線などの故障個所を検出するようにし
ている。このような先行技術では、作業に手間がかかる
ととtKlそのラインの信号を検出するだめのm11j
定仝などを必要とする。またラインの断嶽だけでなく、
各処理装置に含まれているラインからの1d号を支信す
る受信回路などが故障した場合には、ラインの信号の再
無だけ・を検出している従来の方法で::、受信回路の
故障を検出することが困難である。
In such a loop transmission system, when the optical fiber or other line connecting each processing device breaks and breaks down,
The operation of the entire transmission system is about to stop. Therefore, it is necessary to quickly find out in which Ifr the wire was disconnected and the failure occurred, and to replace the transmission system (l) as soon as possible.In the past, the valley processing equipment received the 1d via the line. In this prior art, it is difficult to detect the signal on that line because the work is time-consuming.
Requires fixed price etc. In addition to breaking the line,
If the receiving circuit that supports the 1d signal from the line included in each processing device fails, the conventional method of detecting only the re-absence of the line signal is used. Difficult to detect failure.

本発明の目的は、ループ状伝送系の1安障個所?迅速に
かつ正確に検出することができるための方法を提供する
ことである。
Is the purpose of the present invention one failure point in a loop transmission system? It is an object of the present invention to provide a method for rapid and accurate detection.

第1図は、本発明の一実施例の1舶略化したプロンク図
である。シーケンサなどのようにマイクロコンピュータ
を含む処理装置A、B、’C,Dは、送信回路TXa〜
TXdと、受信間K RX a −t<Xdとをそれぞ
れ含み、先ファイバなどのラインl!a〜l!dによっ
てループ状に接続され、伝送系が構成される。この伝送
系では、各処理装置A〜Dにおいて調歩同期で動作が行
なわれる。
FIG. 1 is a simplified pronk diagram of one embodiment of the present invention. Processing devices A, B, 'C, and D including microcomputers such as sequencers are connected to transmitting circuits TXa to TXa.
TXd, and between reception KRX a -t<Xd, respectively, and the line l! of the destination fiber, etc. a~l! d, and are connected in a loop to form a transmission system. In this transmission system, each of the processing devices A to D operates in asynchronous synchronization.

ラインl!a〜Jdに送受、値される信号のフレー/A
 u 、WS 2図に示されている。各フレームは、1
1ビツトから成り、スタートピントb1と、データを構
成する8つのビン)b2〜b9と、コマンド/データピ
ントblOと、ストップビットb11とから成る。コマ
ンド/データビットblOは、それが論理rlJのとき
、データを表わすビットb2〜b9のうち、4つのピン
トb2〜b5のデータがコマンドコードを表わすことを
意味する。
Line l! Frame of signal transmitted/received and valued from a to Jd/A
u, WS shown in Fig. 2. Each frame is 1
It consists of a start focus b1, eight bins (b2 to b9) constituting data, a command/data focus bIO, and a stop bit b11. When the command/data bit blO is logic rlJ, it means that among the bits b2 to b9 representing data, the data of four pinpoints b2 to b5 represent a command code.

コマンド/データビン)bloが論理「0」であるとき
、それまでに発生したもっとも近いコマンドに付随した
データがピッ)b2〜b9に含まれることを意味する。
When the command/data bin)blo is a logic "0", it means that the data associated with the closest command that has occurred so far is included in b2 to b9.

各処理装置り、−Dの送(# im路Txa〜TXdか
ら送出する信号は、受信回路RX b −RX aによ
ってそれぞれ受信され、各処理装置A〜Dに再び戻って
くるように構成される。たとえば、処理装置Aの送信回
路TXaから送出された信号は、処理装置Bの受信回路
RXbによって受信され、送信回路TXbから送出され
、処理装置Cの受イa回路RXCKよって交信され、送
(i回路1“Xcによってラインlcに送出され、処理
回路りの受信回路RXdによって受イーされ、送(g回
19TXdがらライン7?dを介して交信回+1@RX
 aに送出されて戻される。
The signals transmitted from each processing device -D (#im paths Txa to TXd are received by receiving circuits RX b - RX a, respectively, and are configured to return to each processing device A to D again. For example, a signal sent out from the transmitting circuit TXa of the processing device A is received by the receiving circuit RXb of the processing device B, sent out from the transmitting circuit TXb, communicated by the receiving circuit RXCK of the processing device C, and then sent ( It is sent to the line lc by the i circuit 1"
is sent to a and returned.

各処理装置A〜Dは、処理装置A −Dに対応する故障
個所を表示するための表示器DA 、 DB 。
Each processing device A to D has a display device DA, DB for displaying a failure location corresponding to the processing device A to D.

DC,DDをそれぞれ有する。たとえば処理装置Aの表
示器DAは、処理装置A、B、C,Dに個別的に対応し
た表示素子DAI 、DBI 、DCI 。
They each have DC and DD. For example, the display device DA of the processing device A includes display elements DAI, DBI, and DCI that individually correspond to the processing devices A, B, C, and D.

DDIをそれぞれ有する。残余の表示’JJDB−DC
,DDも同様である。
Each has a DDI. Display of remaining 'JJDB-DC
, DD are also similar.

ラインI!aの個所Iにおいて断線が生じた場合を想定
する。この場合、処理装置Aの送(a回路゛1′Xaか
ら送出された第2図に示される信号は処理装置Bに入力
されず、したがって処理装置IイB、C。
Line I! Assume that a wire breakage occurs at location I in a. In this case, the signal shown in FIG. 2 sent out from the processing device A (a circuit 1'Xa) is not input to the processing device B, and therefore the processing device IB, C.

Dを経てラインfdから受信回路RXaには受f吉され
なくなる。したがって処理装置Aの送信回路TXaは、
第3図に示される故障モードを表わす信号を送出する。
The signal is no longer received by the receiving circuit RXa from the line fd via D. Therefore, the transmitting circuit TXa of the processing device A is
A signal representing the failure mode shown in FIG. 3 is sent out.

この第3図に示される信号は、スタートビットb1と、
故障モードであることを表わすビットb2〜b5の信号
r0001Jと、ビットb6〜b9から成るアドレスと
、コマンド/データビットblOと、ストップビットb
llとから1フレームが構成される。コマンド/データ
ビットblOは「1」である。ビン)b6〜b9から成
るアドレスは、故障モード信号を発生している処理装置
Aを特定する2進化したコードで表わされる。残余の処
理装置B、C,Dもまた、各処理装置縦B、C,Dが送
出した信号を受信することができなくなったことを検出
して1安障モードを表わす第3図と同様な信号を送出す
る。ビットb6〜b9のアドレスは、その故障モード信
号を送出している処理袋[ifB、C,Dに前述のよう
に個別的に対応している。
The signals shown in FIG. 3 include a start bit b1,
Signal r0001J of bits b2 to b5 indicating failure mode, address consisting of bits b6 to b9, command/data bit blO, and stop bit b
One frame is composed of ll and ll. Command/data bit blO is "1". The addresses consisting of bins b6 to b9 are represented by a binary code that specifies the processing device A that is generating the failure mode signal. The remaining processing units B, C, and D also detect that they are no longer able to receive the signals sent out by the vertical processing units B, C, and D, and operate in the same way as shown in Figure 3, which represents the 1-failure mode. Send a signal. The addresses of bits b6 to b9 individually correspond to the processing bags [ifB, C, and D that are sending out the failure mode signal, as described above.

このようにして処理装置Aでは、処理装置B。In this way, processing device A and processing device B.

C,Dからの故障モード信号は受信され、したがって表
示器DAの処理装置B、C,Dに対応した表示素子DB
I 、DCl 、DDlは点灯されるけれども、処理装
置Aから送出された故障モード信号は受信されず、した
がって処理装置f Aに対応する表示素子DAIが表示
されない。したがって送信回路TXa、ラインl!aお
よび受信回路RXbの間で故障が生じたことがわかる。
The failure mode signals from C, D are received and therefore the display elements DB corresponding to the processing units B, C, D of the display DA.
Although I, DCl, and DDl are lit, the failure mode signal sent from the processing device A is not received, and therefore the display element DAI corresponding to the processing device fA is not displayed. Therefore, the transmitting circuit TXa, line l! It can be seen that a failure has occurred between a and the receiving circuit RXb.

処理装置Bでは、故障モード信号は全く受信されず、し
たがって表示器DBの処理装置A −Dに対しした表示
素子DA2〜DD2は消灯しており、これによって処理
装置Aの送信回路TXa、ラインl!aおよび処理装置
Bの受信回路RXbの間で故障が生じていることがわか
る。処理装置Cでは、処理袋−Bの送信回路TXbから
の故14モード借号のみが受信され、処理装置りでは処
理装置B。
In the processing device B, no failure mode signal is received, and therefore the display elements DA2 to DD2 for the processing devices A to D of the display device DB are turned off. ! It can be seen that a failure has occurred between the receiving circuit RXb of the processing device B and the receiving circuit RXb of the processing device B. In the processing device C, only the 14 mode signal from the transmission circuit TXb of the processing bag-B is received;

Cからの故障モード信号が受信される。このようにして
処理装置C,Dの表示器DC,DDを見ることによって
前述のように故障個所を%jることかできる。
A failure mode signal from C is received. In this way, by looking at the displays DC and DD of the processing devices C and D, the location of the failure can be determined as described above.

−斉VC1及故個Ijεで故ト≠が生じた七きには、表
示器DA〜DDの表示状寒を児て1つずつ11女陣個所
を修理してゆけば、伝送系全体の復旧を行なうことがで
きる。表示器DA−DDは、上述の灰施例では、各処理
装置1イA−Dにそれぞれ1役けられたけれども、少な
くとも1つの表示器DA−DDが設けられることによっ
て改1洋個所の検出を知ることができる。゛またこの故
1〕ψ個1jr K関しては、ラインl a −’l 
dだけでなく、送1日回% T X a 〜T X d
および受イtJ回1% RX a −RX dにおける
収嘩も寸た併せて検出することができる。
- In the event that a fault occurs between VC1 and Ijε, the entire transmission system can be restored by repairing the 11 female locations one by one based on the display conditions of DA to DD. can be done. Although the display devices DA-DD were used for each processing device 1A-D in the above-mentioned embodiment, by providing at least one display device DA-DD, it is possible to detect the change point. can be known.゛For this reason, 1〕ψ pieces 1jr K, the line l a −'l
Not only d, but also % of daily shipping times T X a ~ T X d
In addition, it is also possible to detect the collision between 1% RX a and RX d of reception tJ times.

以上のようVこ本−A川によれば、処理製114”はそ
の各処理装置が送出した1a号を受信しなく々つだとき
谷処理装置11のアドレスを含む1日号r送出し、少な
くとも1つの処理装置では9 (rf したアドレス?
含むイ、ゴ号のアドレスに対応した処理装置を表示する
表示手段を・11°するので、ラインだけでなく送(f
ft回1酌および受1河回16などを含めた1・べ障個
1斤を容易に知ることができ、伝送系の復旧を迅速に行
なうことができる。
As mentioned above, according to V Komoto-A River, when the processing unit 114'' does not receive the number 1a sent out by each processing device, it sends out the 1st issue r containing the address of the valley processing device 11, At least one processing unit has 9 (rf address?
Since the display means for displaying the processing device corresponding to the addresses of A and G including
It is possible to easily know the amount of 1 ft and 1 ft, including 1 ft and 1 ft, and the transmission system can be quickly restored.

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

第1図は本発明の一天施例のブロック図、第2図は第1
に示される伝送系において正常な前作が行なわれている
ときに用いらnる信りの構成を示す図、第3図は故障が
生じたときに発生される信号の構成を示す図である。 l・・・故障個所、A −D・・・処理装置、T X 
a −TXd・・・送庸回路、RXa〜RXd川受信回
路、用A〜DD・・表示器、1a−1d  ライン代理
人   弁理士 西教圭−j、!1ニ第1図 B2 第2図
Fig. 1 is a block diagram of an instant embodiment of the present invention, and Fig. 2 is a block diagram of the first embodiment of the present invention.
FIG. 3 is a diagram showing the configuration of a signal used when a normal previous operation is performed in the transmission system shown in FIG. 3, and FIG. 3 is a diagram showing the configuration of a signal generated when a failure occurs. l...Failure location, A-D...Processing device, T
a-TXd...transmission circuit, RXa-RXd river receiving circuit, A-DD...indicator, 1a-1d Line agent Patent attorney Kei Nishi-j,! 1D Figure 1 B2 Figure 2

Claims (1)

【特許請求の範囲】[Claims] 複数の処理装置がループ状に接続されて構成される伝送
系は、各処理装置が送出する信号を受信・送出してその
送出された処理装置に戻るように構成され、処理装置は
、その各処理装置が送出した信号を受信しなくなったと
き、その受信しなくなった処理装置のアドレスを含む信
号を送出し、少なくとも1つの処理装置は、受4a L
だアドレスを含む信号のアドレスに対応した処理装置を
表示する表示手段を有することを特徴とするループ状伝
送系の故障個所検出方法。
A transmission system consisting of a plurality of processing devices connected in a loop is configured to receive and send out signals from each processing device and return to the processing device from which it was sent. When the processing device no longer receives the signal sent out, it sends a signal including the address of the processing device that no longer receives the signal, and at least one processing device sends a signal to the receiver 4a L.
1. A method for detecting a failure location in a loop transmission system, comprising display means for displaying a processing device corresponding to an address of a signal including an address.
JP57172652A 1982-09-30 1982-09-30 Method for detecting failed part of loop transmission system Pending JPS5962247A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57172652A JPS5962247A (en) 1982-09-30 1982-09-30 Method for detecting failed part of loop transmission system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57172652A JPS5962247A (en) 1982-09-30 1982-09-30 Method for detecting failed part of loop transmission system

Publications (1)

Publication Number Publication Date
JPS5962247A true JPS5962247A (en) 1984-04-09

Family

ID=15945858

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57172652A Pending JPS5962247A (en) 1982-09-30 1982-09-30 Method for detecting failed part of loop transmission system

Country Status (1)

Country Link
JP (1) JPS5962247A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6372244A (en) * 1986-09-16 1988-04-01 Canon Inc Signal repeater
US5509029A (en) * 1993-08-03 1996-04-16 Sunx Limited Serial data transmissions device and terminal unit for the same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6372244A (en) * 1986-09-16 1988-04-01 Canon Inc Signal repeater
US5509029A (en) * 1993-08-03 1996-04-16 Sunx Limited Serial data transmissions device and terminal unit for the same

Similar Documents

Publication Publication Date Title
US5153874A (en) Redundancy data transmission device
US7940057B2 (en) Method of detecting disconnection and power discontinuity of I/O unit connected to numerical controller
US20110131348A1 (en) Control system and cpu unit
JPH0795223A (en) Execution of route identification inside communication system
JPS5962247A (en) Method for detecting failed part of loop transmission system
JPH0936859A (en) Monitoring information repeating method and device therefor
JPS609246A (en) Monitor system for data circuit network
JP2518517B2 (en) Communication bus monitoring device
JP4874873B2 (en) Digital controller
US6185192B1 (en) Process for fetching out error statistics data
KR920009097B1 (en) Maintenance apparatus for signal terminal group of common line signal device
JPS62173830A (en) System for detecting disconnection of time division multiplex transmission system
KR930006862B1 (en) Triple modular redundency method
JP2970591B2 (en) Redundant transmission monitoring system
JP2756002B2 (en) Frame transmission method for local area network
JPS63246946A (en) Fault detection system for communication equipment in loop structure network
JP2956385B2 (en) Bus line monitoring method
CN114281729A (en) Method for switching M-LVDS bus to send message
JP2001283359A (en) Radio repeater
KR930006863B1 (en) Supervising circuit for a receiving bus
JP2512832B2 (en) Series controller
JPH01288033A (en) Erroneous data output preventing system in case of line switching of data transmission equipment
JPS62248332A (en) Supervisory display device and supervisory method for coaxial communication line
JPH06103251A (en) Monitor and control system for information processor
JPS63245093A (en) Remote super visory equipment