JP4664159B2 - 独立したエラー回復機能を有するスレーブ装置 - Google Patents
独立したエラー回復機能を有するスレーブ装置 Download PDFInfo
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- JP4664159B2 JP4664159B2 JP2005256229A JP2005256229A JP4664159B2 JP 4664159 B2 JP4664159 B2 JP 4664159B2 JP 2005256229 A JP2005256229 A JP 2005256229A JP 2005256229 A JP2005256229 A JP 2005256229A JP 4664159 B2 JP4664159 B2 JP 4664159B2
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- 238000011084 recovery Methods 0.000 title claims description 86
- 238000004891 communication Methods 0.000 claims description 19
- 230000004044 response Effects 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 6
- 230000000977 initiatory effect Effects 0.000 claims description 2
- 239000000872 buffer Substances 0.000 description 29
- 239000004744 fabric Substances 0.000 description 26
- 238000010586 diagram Methods 0.000 description 7
- 238000012546 transfer Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/0703—Error or fault processing not based on redundancy, i.e. by taking additional measures to deal with the error or fault not making use of redundancy in operation, in hardware, or in data representation
- G06F11/0793—Remedial or corrective actions
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/14—Error detection or correction of the data by redundancy in operation
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/0703—Error or fault processing not based on redundancy, i.e. by taking additional measures to deal with the error or fault not making use of redundancy in operation, in hardware, or in data representation
- G06F11/0706—Error or fault processing not based on redundancy, i.e. by taking additional measures to deal with the error or fault not making use of redundancy in operation, in hardware, or in data representation the processing taking place on a specific hardware platform or in a specific software environment
- G06F11/0745—Error or fault processing not based on redundancy, i.e. by taking additional measures to deal with the error or fault not making use of redundancy in operation, in hardware, or in data representation the processing taking place on a specific hardware platform or in a specific software environment in an input/output transactions management context
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/16—Error detection or correction of the data by redundancy in hardware
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/14—Error detection or correction of the data by redundancy in operation
- G06F11/1402—Saving, restoring, recovering or retrying
- G06F11/1471—Saving, restoring, recovering or retrying involving logging of persistent data for recovery
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- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Quality & Reliability (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Small-Scale Networks (AREA)
- Retry When Errors Occur (AREA)
- Hardware Redundancy (AREA)
Description
32 マスターCPU
34 スレーブ装置
36 通信コントローラ
38 エラーハンドラ
Claims (7)
- マスタープロセッサに結合するようにされたスレーブ装置であって、
前記スレーブ装置内部のエラーを検出するように構成され、エラーを少なくとも1つ検出するのに応じて、前記マスタープロセッサから独立して、少なくとも1つの検出したエラーに基づきエラー回復操作を選択するように構成され、前記選択したエラー回復操作を開始して実行するように構成されたエラーハンドラと、
マスター/スレーブプロトコルに従って前記マスタープロセッサと通信するように構成され、前記エラーハンドラが前記選択したエラー回復操作を実行している間に前記マスター/スレーブプロトコルに従った通信を維持するように構成され、前記マスタープロセッサにリセット割込信号を提供して、前記マスタープロセッサに、エラー回復操作の実行が完了し、前記スレーブ装置と前記マスタープロセッサとの間で転送されたデータの一部分が失われたか損なわれた可能性があることを通知するように構成された通信コントローラと
を備えてなるスレーブ装置。 - 前記エラーハンドラは、複数のタイプのエラーを検出し、前記検出したエラーのタイプに基づいて、複数のエラー回復操作から所望のエラー回復操作を選択するように構成される、請求項1に記載のスレーブ装置。
- 前記リセット割込信号が前記マスタープロセッサにチェックポイントリトライ操作を開始する働きをし、それにより前記マスタープロセッサが前のチェックポイント状態から実行を開始する、請求項1に記載のスレーブ装置。
- 前記通信コントローラが、前記マスター/スレーブプロトコルに従って前記マスタープロセッサによってデータトランザクションを実行するように構成され、各トランザクションが所定のデータ量を含み、前記通信コントローラは、前記エラーハンドラが前記選択したエラー回復操作を開始したときに前記マスタープロセッサにより進行中のトランザクションを完了するように構成されている、請求項1に記載のスレーブ装置。
- 前記通信コントローラは、前記エラーハンドラが前記選択したエラー回復操作を開始した後で前記スレーブ装置から前記マスタープロセッサへの進行中のデータトランザクションを完了するのに必要な量のデータを作成するように構成され、前記作成された量のデータが、前記所定のデータ量と、前記選択したエラー回復操作の前記開始前に前記スレーブ装置から前記マスタープロセッサによって受け取ったデータの量との間の差の量のデータを含む、請求項4に記載のスレーブ装置。
- マスタープロセッサに結合するようにされたスレーブ装置を操作する方法であって、
マスター/スレーブプロトコルに従って前記マスタープロセッサと通信するステップと、
前記スレーブ装置の内部エラーを少なくとも1つ検出するステップと、
少なくとも1つの前記検出した内部エラーに基づきエラー回復操作を選択するステップと、
前記選択したエラー回復操作を前記マスタープロセッサから独立して開始し実行するステップと、
通信バス上で、前記通信バスのハンギングを回避するために、エラー回復操作が同時に発生するかに関係なく、少なくとも、前記スレーブ装置と前記マスタープロセッサの間で、a)保留中のデータトランザクション、又は、b)進行中のデータトランザクションのうち、少なくとも一つを完了するステップと
を有することを特徴とする方法。 - 前記マスタープロセッサと通信するステップが、前記マスター/スレーブプロトコルに従って前記マスタープロセッサによってデータトランザクションを実行するステップをさらに含み、各トランザクションが所定量のデータを含んでおり、
前記進行中のデータトランザクションを完了するステップが、前記選択したエラー回復操作の前記開始の前に、前記所定量のデータの量と転送されるデータの量の間の差の量のデータを含む、量のデータを作成するステップを含む、請求項6に記載の方法。
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/933,750 US7526676B2 (en) | 2004-09-03 | 2004-09-03 | Slave device having independent error recovery |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2006074797A JP2006074797A (ja) | 2006-03-16 |
JP4664159B2 true JP4664159B2 (ja) | 2011-04-06 |
Family
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JP2005256229A Expired - Fee Related JP4664159B2 (ja) | 2004-09-03 | 2005-09-05 | 独立したエラー回復機能を有するスレーブ装置 |
Country Status (3)
Country | Link |
---|---|
US (1) | US7526676B2 (ja) |
JP (1) | JP4664159B2 (ja) |
GB (1) | GB2417802B (ja) |
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JP2010134251A (ja) * | 2008-12-05 | 2010-06-17 | Sanyo Electric Co Ltd | 映像表示装置およびその制御方法 |
US8386594B2 (en) * | 2010-02-11 | 2013-02-26 | Intel Corporation | Network controller circuitry to initiate, at least in part, one or more checkpoints |
US8495422B2 (en) * | 2010-02-12 | 2013-07-23 | Research In Motion Limited | Method and system for resetting a subsystem of a communication device |
US9191203B2 (en) | 2013-08-06 | 2015-11-17 | Bedrock Automation Platforms Inc. | Secure industrial control system |
US8971072B2 (en) | 2011-12-30 | 2015-03-03 | Bedrock Automation Platforms Inc. | Electromagnetic connector for an industrial control system |
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US8868813B2 (en) | 2011-12-30 | 2014-10-21 | Bedrock Automation Platforms Inc. | Communications control system with a serial communications interface and a parallel communications interface |
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US10834094B2 (en) | 2013-08-06 | 2020-11-10 | Bedrock Automation Platforms Inc. | Operator action authentication in an industrial control system |
US11314854B2 (en) | 2011-12-30 | 2022-04-26 | Bedrock Automation Platforms Inc. | Image capture devices for a secure industrial control system |
US9467297B2 (en) | 2013-08-06 | 2016-10-11 | Bedrock Automation Platforms Inc. | Industrial control system redundant communications/control modules authentication |
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-
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- 2005-09-05 JP JP2005256229A patent/JP4664159B2/ja not_active Expired - Fee Related
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Also Published As
Publication number | Publication date |
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JP2006074797A (ja) | 2006-03-16 |
US20060053331A1 (en) | 2006-03-09 |
GB2417802A (en) | 2006-03-08 |
GB0515537D0 (en) | 2005-09-07 |
GB2417802B (en) | 2008-03-26 |
US7526676B2 (en) | 2009-04-28 |
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