JPH03240833A - Duplex control system - Google Patents
Duplex control systemInfo
- Publication number
- JPH03240833A JPH03240833A JP2038949A JP3894990A JPH03240833A JP H03240833 A JPH03240833 A JP H03240833A JP 2038949 A JP2038949 A JP 2038949A JP 3894990 A JP3894990 A JP 3894990A JP H03240833 A JPH03240833 A JP H03240833A
- Authority
- JP
- Japan
- Prior art keywords
- access request
- standby
- main
- request receiving
- 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.)
- Pending
Links
- 238000012360 testing method Methods 0.000 claims abstract description 19
- 230000001360 synchronised effect Effects 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims description 3
- 238000012795 verification Methods 0.000 claims description 2
- 238000001612 separation test Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 1
Landscapes
- Hardware Redundancy (AREA)
- Multi Processors (AREA)
- Test And Diagnosis Of Digital Computers (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は二重化制御方式に関し、特に障害発生時に非同
期制御とし待機予備装置とした中央制御装置および記憶
装置の間を接続するアクセス要求受信装置を切分けて試
験することができる二重化制御方式に関する。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a redundant control system, and particularly to an access request receiving device that performs asynchronous control when a failure occurs and connects a central control device and a storage device as a standby backup device. This invention relates to a redundant control system that can be tested separately.
従来の二重化制御方式は、主装置と待機予備装置とがそ
れぞれ一体の装置として動作し、中央制御装置からの制
御はアクセス要求受信装置で止まらず、常に記憶装置ま
でを含めて行うようになっている。In the conventional redundant control system, the main device and the standby device each operate as an integrated device, and control from the central control device does not stop at the access request receiving device, but always includes the storage device. There is.
上述した従来の二重化制御方式は、中央制御装置からの
制御はアクセス要求受信装置で止まらず、常に記憶装置
までを含めて行うようになっているので、障害発生後の
切分は試験の実行が不可能であるという問題点がある。In the conventional redundant control method described above, control from the central control unit does not stop at the access request receiving device, but always includes the storage device, so it is difficult to isolate the problem after it occurs by running a test. The problem is that it is impossible.
本発明の目的は、−制御系内の切分は試験か可能な二重
化制御方式を提供することにある。An object of the present invention is to provide a redundant control system that allows separation and testing within the control system.
本発明の二重化制御方式は、中央制御装置と記憶装置と
前記中央制御装置および記憶装置の間を接続しアクセス
要求信号を受信するアクセス要求受信装置とを有する主
装置と、同一の内部構成を有する待機予備装置とからな
る制御系の二重化制御方式において、同期制御中の前記
主装置か障害を発生するとこの障害を発生した主装置の
中央制御装置は前記待機予備装置の中央制御装置に切替
えを指示する信号を送り、前記主装置と前記待機予備装
置とを切離し相互に非同期制御とし、前記待機予備装置
を新しい主装置として動作させ、次に前記アクセス要求
受信装置に試験信号を送り直接前記アクセス要求受信装
置を試験する試験モードとして応答信号を受ける構成で
ある。The duplex control system of the present invention has a main device having the same internal configuration as a central control device, a storage device, and an access request receiving device that connects the central control device and the storage device and receives an access request signal. In a redundant control system for a control system consisting of a standby and backup device, if a failure occurs in the main device during synchronous control, the central control device of the main device that has experienced the failure instructs the central control device of the standby and backup device to switch. The main device and the standby backup device are separated and controlled asynchronously, the standby backup device is operated as a new main device, and a test signal is then sent to the access request receiving device to directly receive the access request. It is configured to receive a response signal as a test mode for testing the receiving device.
本発明の二重化制御方式は、前記同期制御中には前記主
装置と前記待機予備装置との間の同期照合を行うため、
前記主装置内のアクセス要求受信装置に対する制御であ
っても前記記憶装置まで含めて制御を行ってもよい。The duplex control method of the present invention performs synchronization verification between the main device and the standby standby device during the synchronization control,
Even if the access request receiving device within the main device is controlled, the control may also include the storage device.
次に、本発明の実施例について図面を参照して説明する
。Next, embodiments of the present invention will be described with reference to the drawings.
第１図は本発明の一実施例のブロック図である。FIG. 1 is a block diagram of one embodiment of the present invention.
中央制御装置１１は、アクセス要求受信装置１２に接続
してアクセス要求信号１４を送出し、アクセス要求受信
装置１２は記憶装置１３に接続して第１の系を構成して
いる。中央制御装置２１は、アクセス要求受信装置２２
に接続してアクセス要求信号２４を送出し、アクセス要
求受信装置２２は記憶装置２３に接続して第２の系を構
成している。The central control device 11 is connected to an access request receiving device 12 to send out an access request signal 14, and the access request receiving device 12 is connected to a storage device 13 to form a first system. The central control device 21 includes an access request receiving device 22
The access request receiving device 22 is connected to a storage device 23 to constitute a second system.
次に動作について説明する。Next, the operation will be explained.
第２図は第１の系と第２の系とが非同期モートて動作す
る場合の説明図である。FIG. 2 is an explanatory diagram when the first system and the second system operate asynchronously.
この場合は、第１の系と第２の系とか独立して動作して
いる。例えは第１の系では中央制御装置１１か、アクセ
ス要求受信装置１２に対してアクセス要求信号を送出し
、アクセス要求受信装置１２は、アクセス要求信号１４
を受信すると記憶装置１３に対して読出しあるいは書込
み制御を行う。In this case, the first system and the second system operate independently. For example, in the first system, the access request signal is sent to the central control device 11 or the access request receiving device 12, and the access request receiving device 12 sends the access request signal 14.
When received, read or write control is performed on the storage device 13.
読出しあるいは書込み制御に伴ない発生する出力信号１
５か、記憶装置１３からアクセス要求受信装置１２を介
して中央制御装置１１に送出される。Output signal 1 generated due to read or write control
5 or sent from the storage device 13 to the central control device 11 via the access request receiving device 12.
第３図は第１の系と第２の系とが同期モードで動作する
場合の説明図である。FIG. 3 is an explanatory diagram when the first system and the second system operate in synchronous mode.
二の場合は、第１の系が主装置として動作し：第２の系
は待機予備装置として動作している。第１の系の中央制
御装置１１は、アクセス要求受信装置１２７こ対してア
クセス要求信号を送出する場合【こは、同時にアクセス
要求受信装置２２にもアクセス要求信号を送出する。従
って、アクセス要求受信装置１２．２２と記憶装置１３
．２３とはそれぞれ、同期状態で動作することになる。In the second case, the first system operates as a main device; the second system operates as a standby backup device. When the central control device 11 of the first system sends an access request signal to the access request receiving device 127, it simultaneously sends the access request signal to the access request receiving device 22. Therefore, the access request receiving device 12.22 and the storage device 13
．． 23 will operate in a synchronous state.
この場合、中央制御装置１１がアクセス要求受信装置１
２に対してのみ制御を必要としても、待機予備装置のア
クセス要求受信装置２２と記憶装置２３とが、主装置に
同期して同時に動作しているので、同期状態を崩さない
よう記憶装置１３に対しても擬似信号１６を送出してお
く。In this case, the central control device 11 controls the access request receiving device 1
Even if it is necessary to control only the access request receiving device 22 and the storage device 23 of the standby spare device, since the access request receiving device 22 and the storage device 23 of the standby spare device are operating simultaneously in synchronization with the main device, it is necessary to control the storage device 13 so as not to break the synchronization state. The pseudo signal 16 is also sent to the receiver.
第４図は第１の系で障害が発生した場合の動作の説明図
である。FIG. 4 is an explanatory diagram of the operation when a failure occurs in the first system.
同期モードで動作中に、中央制御装置１１からアクセス
要求受信装置１２に対する制御、あるいはアクセス要求
受信装置１２から記憶装置１３に対する制御の最に障害
が発生したとすると、これを検知した中央制御装置１１
は、現在、待機予備装置である第２の系の中央制御装置
２１に切替えを指示する信号を送り、主装置である第１
の系と待機予備装置である第２の系とを切離し、相互に
非同期モードとし、第２の系を主装置とし第１の系を待
機予備装置とする。待機予備装置となった第１の系の中
央制御装置１１は、アクセス要求受信装置１２に試験信
号１７を送り、アクセス要求受信装置１２内で制御情報
の折返しを行うよう制御する。この場合は、制御情報を
記憶装置１３に送出しないので、障害発生装置の切分け
が可能となる。このようにして、アクセス要求受信装置
１２の試験を行い、正常に終了しない場合は、中央制御
装置１１とアクセス要求受信装置１２との間の信号線、
あるいはアクセス要求受信装置１２内に障害か発生して
いると判断される。正常に終了した場合は、次に記憶装
置１３まで試験制御を拡大し、試験を行い、障害発生位
置を確認する。If a failure occurs in the control from the central control unit 11 to the access request receiving device 12 or in the control from the access request receiving device 12 to the storage device 13 while operating in the synchronous mode, the central control unit 11 detects this failure.
sends a signal instructing switching to the central control unit 21 of the second system, which is currently a standby standby unit, and
The system is separated from the second system, which is a standby spare device, and set to a mutually asynchronous mode, with the second system serving as the main device and the first system serving as the standby spare device. The central control device 11 of the first system, which has become a standby spare device, sends a test signal 17 to the access request receiving device 12 and controls the access request receiving device 12 to return the control information. In this case, since the control information is not sent to the storage device 13, it becomes possible to isolate the faulty device. In this way, the access request receiving device 12 is tested, and if the test does not end normally, the signal line between the central control device 11 and the access request receiving device 12,
Alternatively, it is determined that a failure has occurred within the access request receiving device 12. If the test is successfully completed, the test control is then extended to the storage device 13, a test is performed, and the location of the failure is confirmed.
以上説明したように、本発明は、障害を発生した主装置
の中央制御装置かアクセス要求受信装置に試験信号を送
り直接アクセス要求受信装置を試験するモードとして応
答信号を受けることにより、−制御系内の切分は試験が
可能となるという効果が有る。As explained above, the present invention provides a mode in which a test signal is sent to the central control unit of a main device in which a failure has occurred or to an access request receiving device, and a response signal is received as a mode for directly testing the access request receiving device. The cutoff has the effect of making testing possible.
第１図は本発明の一実施例のブロック図、第２図は第１
の系と第２の系とが非同期モードで動作する場合の説明
図、第３図は第１の系と第２の系とが同期モードで動作
する場合の説明図、第４図は第１の系で障害が発生した
場合の動作の説明図である。FIG. 1 is a block diagram of one embodiment of the present invention, and FIG. 2 is a block diagram of an embodiment of the present invention.
3 is an explanatory diagram when the first system and the second system operate in synchronous mode, and FIG. 4 is an explanatory diagram when the first system and the second system operate in synchronous mode. FIG. 2 is an explanatory diagram of the operation when a failure occurs in the system.
Claims (1)
記憶装置の間を接続しアクセス要求信号を受信するアク
セス要求受信装置とを有する主装置と、同一の内部構成
を有する待機予備装置とからなる制御系の二重化制御方
式において、同期制御中の前記主装置が障害を発生する
とこの障害を発生した主装置の中央制御装置は前記待機
予備装置の中央制御装置に切替えを指示する信号を送り
、前記主装置と前記待機予備装置とを切離し相互に非同
期制御とし、前記待機予備装置を新しい主装置として動
作させ、次に前記アクセス要求受信装置に試験信号を送
り直接前記アクセス要求受信装置を試験する試験モード
として応答信号を受けることを特徴とする二重化制御方
式。 ２、前記同期制御中には前記主装置と前記待機予備装置
との間の同期照合を行うため、前記主装置内のアクセス
要求受信装置に対する制御であっても前記記憶装置まで
含めて制御を行うことを特徴とする請求項１記載の二重
化制御方式。[Claims] 1. A main device having the same internal configuration as a central control device, a storage device, and an access request receiving device that connects the central control device and the storage device and receives an access request signal. In a redundant control system for a control system consisting of a standby standby unit, when a failure occurs in the main unit under synchronous control, the central control unit of the main unit that has experienced the failure instructs the central control unit of the standby standby unit to switch over. The main device and the standby backup device are separated and controlled asynchronously, the standby backup device is operated as a new main device, and a test signal is then sent to the access request receiving device to directly receive the access request. A duplex control method characterized by receiving a response signal as a test mode for testing a receiving device. 2. During the synchronization control, synchronization verification is performed between the main device and the standby backup device, so even if the access request receiving device in the main device is controlled, the storage device is also controlled. The duplex control system according to claim 1, characterized in that:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2038949A JPH03240833A (en) | 1990-02-19 | 1990-02-19 | Duplex control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2038949A JPH03240833A (en) | 1990-02-19 | 1990-02-19 | Duplex control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03240833A true JPH03240833A (en) | 1991-10-28 |
Family
ID=12539458
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2038949A Pending JPH03240833A (en) | 1990-02-19 | 1990-02-19 | Duplex control system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03240833A (en) |
-
1990
- 1990-02-19 JP JP2038949A patent/JPH03240833A/en active Pending
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