JPS6134169B2 - - Google Patents
Info
- Publication number
- JPS6134169B2 JPS6134169B2 JP53085098A JP8509878A JPS6134169B2 JP S6134169 B2 JPS6134169 B2 JP S6134169B2 JP 53085098 A JP53085098 A JP 53085098A JP 8509878 A JP8509878 A JP 8509878A JP S6134169 B2 JPS6134169 B2 JP S6134169B2
- Authority
- JP
- Japan
- Prior art keywords
- control device
- fault
- failure
- detected
- central control
- 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.)
- Expired
Links
- 238000001514 detection method Methods 0.000 claims description 7
- 238000010586 diagram Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Hardware Redundancy (AREA)
- Debugging And Monitoring (AREA)
- Retry When Errors Occur (AREA)
Description
【発明の詳細な説明】
本発明は、中心となる中央制御装置に接続さ
れ、相互に定められた接続仕様で動作する制御装
置に関し、とくにその制御装置に固定的な障害が
生じた場合の検出と処理の機能を設けた制御装置
に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a control device that is connected to a central control device and operates according to mutually defined connection specifications, and in particular, to detect a fixed failure in the control device. The present invention relates to a control device equipped with processing functions.
第１図は、中心となる中央制御装置と、それに
接続された複数の制御装置とよりなるシステムの
構成の例である。従来このようなシステムにおい
て、例えば制御装置２０において障害が検出され
た場合、制御装置２０は中央制御装置１０に対し
て障害報告を行い、中央制御装置１０から適当な
指示を受け回復動作を行うのが一般的であつた。
このような方式では、各制御装置で発生し得る間
欠的障害に対しては、システム全体の信頼性を上
げることに関し多大な効果を持つものの、障害が
特定の制御装置で固定的になり、障害報告が該制
御装置から連続的に中央制御装置１０に報告され
る事態になると、中央制御装置１０はこの障害処
理にのみ忙殺され、システム全体の業務が進捗し
ないことが発生する。 FIG. 1 shows an example of the configuration of a system consisting of a central control device and a plurality of control devices connected to it. Conventionally, in such a system, when a fault is detected in the control device 20, for example, the control device 20 reports the fault to the central control device 10, receives appropriate instructions from the central control device 10, and performs recovery operations. was common.
Although this type of system has a great effect on improving the reliability of the entire system against intermittent failures that may occur in each control device, failures become fixed in a specific control device and If the control device continuously reports reports to the central control device 10, the central control device 10 will be busy dealing with the failure, and the work of the entire system will not progress.
本発明の目的は、このような従来技術の問題点
を解決することにあり、以上に述べた特定制御装
置に発生する障害を検出し、かかる障害時は、自
から中央制御装置との接続を自動的に切断し、シ
ステム全体の処理の進捗を妨げないような制御装
置を提供することにある。 The purpose of the present invention is to solve the problems of the prior art as described above, by detecting a failure that occurs in the above-mentioned specific control device, and in the event of such a failure, automatically disconnecting the connection with the central control device. It is an object of the present invention to provide a control device that automatically disconnects and does not disturb the progress of processing of the entire system.
しかして、本発明は制御装置内に発生した障害
を、間欠的障害であるか固定的障害であるかを判
断し、もし間欠的障害ならば、従来方式どうり中
央制御装置からの回復指示により回復するが、前
もつて設定された一定時間内で同一障害要因が重
ねて検出された場合は、これを固定的障害とみな
し中央制御装置との接続関係を切断する機能を制
御装置に付加する。このようにすれば、特定の制
御装置で発生した固定的障害により、システム全
体が本来の業務を続行できないという最悪の事態
を救うことができる。 Thus, the present invention determines whether a failure occurring in the control device is an intermittent failure or a fixed failure, and if the failure is an intermittent failure, it receives a recovery instruction from the central control unit as in the conventional method. However, if the same fault factor is detected repeatedly within a preset period of time, the control device is equipped with a function that regards this as a permanent fault and disconnects from the central control device. . In this way, it is possible to avoid the worst case scenario in which the entire system is unable to continue its normal operations due to a fixed failure occurring in a specific control device.
本発明の具体的実施例を第２図に示す。第２図
は本発明の対象となる制御装置の一部を示したも
ので、７，８は中央制御装置との接続信号群であ
り、１は制御装置の有する障害検出回路を概念的
に示したものである。今、制御装置内で何らかの
障害が検出された時、障害内容に対応した障害検
出信号（ERR＃１，＃２……）が“１”の状態
で第１の障害記憶装置２に記録される。一方、障
害の発生は障害報告信号９に依り中央制御装置に
報告する。第２の障害記憶装置３は、障害記憶装
置２の以前の内容を記録しておくもので、第３図
に示すように、障害発生時点Ａから一定時間Ｔだ
け経過した時点Ｂでリセツト信号４により内容を
クリアされるものとする。 A specific embodiment of the present invention is shown in FIG. FIG. 2 shows a part of the control device that is the subject of the present invention, 7 and 8 are a group of connection signals with the central control device, and 1 conceptually shows a fault detection circuit included in the control device. It is something that Now, when some kind of fault is detected in the control device, the fault detection signal (ERR#1, #2...) corresponding to the fault content is recorded in the first fault storage device 2 as "1". . On the other hand, the occurrence of a failure is reported to the central control unit using a failure report signal 9. The second fault storage device 3 records the previous contents of the fault storage device 2, and as shown in FIG. The contents shall be cleared by.
このようにすれば、障害発生時、障害記憶装置
２と障害記憶装置３の内容を比較回路５で調べ、
設定時間Ｔの間に同一要因による障害が発生した
かを知ることができる。 By doing this, when a fault occurs, the contents of the fault storage device 2 and the fault storage device 3 are checked by the comparison circuit 5,
It is possible to know whether a failure due to the same cause has occurred during the set time T.
比較の結果、同一要因による障害が時間Ｔの間
に連続して発生していれば、切断指示信号６によ
り中央制御装置との間の接続信号群７，８の接続
を断ち、該制御装置を中央制御装置から切り離す
ことができる。 As a result of the comparison, if failures due to the same cause occur continuously during time T, the connection of the connection signal groups 7 and 8 with the central control device is cut off by the disconnection instruction signal 6, and the control device is disconnected. Can be separated from the central control unit.
尚、障害記憶装置２，３、比較回路５、および
接続信号群の切断の具体的回路等は周知の技術で
実現できるものである。 The fault storage devices 2 and 3, the comparison circuit 5, and the specific circuit for disconnecting the connection signal group can be realized using well-known techniques.
以上で述べた如く、本発明により、特定の制御
装置内の固定的障害に依り発生するシステム全体
の機能停止を、該制御装置を自動的にシステムか
ら徐外することにより、未然に防止することがで
きる。 As described above, according to the present invention, it is possible to prevent the entire system from stopping due to a fixed failure in a specific control device by automatically gradually removing the control device from the system. I can do it.
第１図は本発明の対象とするシステムの全体の
概略図、第２図は本発明の一実施例を示すブロツ
ク図、第３図は第２図の動作を説明するタイムチ
ヤート図である。
１０……中央制御装置、２０〜４０……制御装
置、１……障害検出回路、２〜３……障害記憶装
置、５……比較回路。
FIG. 1 is a schematic diagram of the entire system to which the present invention is applied, FIG. 2 is a block diagram showing one embodiment of the present invention, and FIG. 3 is a time chart explaining the operation of FIG. DESCRIPTION OF SYMBOLS 10... Central control device, 20-40... Control device, 1... Fault detection circuit, 2-3... Fault storage device, 5... Comparison circuit.
Claims (1)
置を備えたシステムにおいて、自らの障害を検知
する検知手段と、該検知手段により検知された障
害内容を、検知されるたびごとに、予め設定され
た所定時間内記録する障害記録手段と、該検知手
段により新たに障害が検知されたとき、該検知手
段により新たに検知された障害内容と、該障害記
録手段に以前に記録された障害内容との一致性に
応じて、前記上位装置との接続関係を抑止するか
否か判断する判断手段を設けたことを特徴とする
制御装置。1. In a system equipped with a host device and a control device connected to the host device, a detection means for detecting its own failure and the details of the failure detected by the detection means are set in advance each time it is detected. fault recording means for recording within a predetermined period of time, and when a new fault is detected by the detection means, the details of the fault newly detected by the detection means, and the details of the fault previously recorded in the fault recording means. A control device characterized in that it is provided with a determining means for determining whether or not to inhibit a connection relationship with the host device, depending on the consistency with the host device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8509878A JPS5513438A (en) | 1978-07-14 | 1978-07-14 | Controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8509878A JPS5513438A (en) | 1978-07-14 | 1978-07-14 | Controller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5513438A JPS5513438A (en) | 1980-01-30 |
| JPS6134169B2 true JPS6134169B2 (en) | 1986-08-06 |
Family
ID=13849126
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8509878A Granted JPS5513438A (en) | 1978-07-14 | 1978-07-14 | Controller |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5513438A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02147178U (en) * | 1989-05-11 | 1990-12-13 |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02128233A (en) * | 1988-11-09 | 1990-05-16 | Nec Corp | Fault processor |
-
1978
- 1978-07-14 JP JP8509878A patent/JPS5513438A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02147178U (en) * | 1989-05-11 | 1990-12-13 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5513438A (en) | 1980-01-30 |
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