WO2012127612A1 - プログラマブルロジックコントローラ - Google Patents
プログラマブルロジックコントローラ Download PDFInfo
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- WO2012127612A1 WO2012127612A1 PCT/JP2011/056795 JP2011056795W WO2012127612A1 WO 2012127612 A1 WO2012127612 A1 WO 2012127612A1 JP 2011056795 W JP2011056795 W JP 2011056795W WO 2012127612 A1 WO2012127612 A1 WO 2012127612A1
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- WIPO (PCT)
- Prior art keywords
- unit
- cpu unit
- extension
- bus
- extension cable
- Prior art date
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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
- G06F11/14—Error detection or correction of the data by redundancy in operation
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
- G05B19/054—Input/output
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/18—Packaging or power distribution
-
- 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
- G06F11/0703—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
- G06F11/0751—Error or fault detection not based on redundancy
-
- 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
- G06F11/079—Root cause analysis, i.e. error or fault diagnosis
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/10—Plc systems
- G05B2219/11—Plc I-O input output
- G05B2219/1109—Expansion, extension of I-O
Definitions
- the present invention relates to a process when an internal bus communication error occurs in a programmable logic controller.
- Patent Documents 1, 3 and 4 propose a technique for detecting a state such as a disconnection or a short circuit in a connection between an input slave unit of a programmable logic controller and an external device and identifying a location where there is a communication abnormality.
- Anomaly detection according to the prior art is when the bus signal path is connected via a single connector or backplane base unit, and there is a single internal bus between the CPU unit and each unit. Applicable. In a so-called baseless type system constructed by directly linking units, the bus signal path is connected through the units, and the CPU unit and each unit completely share the internal bus. ing. When abnormality detection according to the prior art is applied to a system that completely shares an internal bus, it is possible to detect communication abnormality on the internal bus, but it is difficult to identify an abnormality location.
- the present invention has been made in view of the above, and an object of the present invention is to obtain a programmable logic controller that can accurately identify a location where a communication abnormality has occurred in an internal bus.
- the present invention provides a CPU unit, various units controlled by the CPU unit and connected through a common connector, the CPU unit and the various units.
- An internal bus that connects the CPU unit and the various units, and a bus interface that is provided in common to each of the various units and holds abnormality detection data for detecting an abnormality in the internal bus.
- the CPU unit detects an abnormal portion of the internal bus by collating the abnormality detection data read from the bus interface of the various units.
- the abnormal point of the internal bus can be determined by the CPU unit. As a result, it is possible to accurately identify the location where the communication abnormality has occurred in the internal bus.
- FIG. 1 is a block diagram showing a configuration of a programmable logic controller according to an embodiment of the present invention.
- FIG. 2 is a flowchart for explaining a procedure for diagnosing an internal bus communication abnormality by the programmable logic controller.
- FIG. 1 is a block diagram showing a configuration of a programmable logic controller according to an embodiment of the present invention.
- a programmable logic controller including a basic block 11 and two extension blocks 12 and 13 is taken as an example.
- the basic block 11 and the extension block 12 are connected via an extension cable 8.
- the extension block 12 and the extension block 13 are connected via an extension cable 8.
- the basic block 11 includes a CPU unit 1, various units, a branch unit 6, an input / output unit 2, and an end cover 4. In the basic block 11, the various units are directly connected via the common connector 3.
- the extension block 12 has an extension unit 7, a branch unit 6, an input / output unit 2 and an end cover 4 which are various units.
- the extension block 13 includes an extension unit 7, an input / output unit 2, and an end cover 4 that are various units. In the extension blocks 12 and 13, various units are directly connected via the common connector 3.
- the CPU unit 1 controls the entire programmable controller including the units of blocks 11, 12, and 13.
- the input / output unit 2 captures input data from various input devices (not shown), sends output signals to various output devices (not shown), and the like.
- the end cover 4 is provided at the end of the basic block 11 and the extension blocks 12 and 13.
- the end cover 4 is a unit that performs termination processing of the system.
- the internal bus 5 is provided through the CPU unit 1, the branch unit 6, the input / output unit 2 and the end cover 4, and these are connected in series.
- the branch unit 6 provided in the basic block 11 branches the internal bus 5 to the input / output unit 2 side in the basic block 11 and the extension cable 8 side.
- the extension cable 8 connects the branch unit 6 of the basic block 11 and the extension unit 7 of the extension block 12.
- An extension cable omission detection signal 10 passes through the extension cable 8.
- the internal bus 5 is provided through the extension unit 7, the branch unit 6, the input / output unit 2 and the end cover 4, and these are connected in series.
- the branch unit 6 provided in the extension block 12 branches the internal bus 5 to the input / output unit 2 side in the extension block 12 and the extension cable 8 side.
- the extension cable 8 connects the branch unit 6 of the extension block 12 and the extension unit 7 of the extension block 13.
- An extension cable omission detection signal 10 passes through the extension cable 8.
- the internal bus 5 is provided through the expansion unit 7, the input / output unit 2, and the end cover 4, and these are connected in series.
- the I / O unit 2, the end cover 4, the branch unit 6 and the extension unit 7 which are various units in the programmable logic controller include a bus interface (I / F) 9 provided in common to each unit.
- the bus I / F 9 is connected to the internal bus 5 in each unit.
- the bus I / F 9 holds abnormality detection data for detecting an abnormality in the internal bus 5.
- the abnormality detection data of the bus I / F 9 can be transmitted via the internal bus 5.
- the bus I / F 9 is equipped with a register for internal bus diagnosis.
- the CPU unit 1 reads out the abnormality detection data by accessing the register of the bus I / F 9 and collates it, thereby detecting the abnormal part of the internal bus 5 one by one.
- the bus I / F 9 is also equipped with a register for holding extension cable disconnection information for detecting the extension cable 8 disconnection.
- the bus I / F 9 detects the connection state of the extension cable 8 by connecting the extension cable disconnection detection signal 10 to the extension cable disconnection information register, and obtains the extension cable disconnection information.
- the extension cable disconnection information of the bus I / F 9 can be transmitted via the internal bus 5.
- the CPU unit 1 reads the extension cable disconnection information by accessing the register of the bus I / F 9.
- the CPU unit 1 detects the connection state of the extension cable 8 from the read extension cable disconnection information.
- the extension cable disconnection detection signal 10 is pulled up by the branch unit 6 from the extension unit 7 via the extension cable 8.
- the extension cable disconnection detection signal 10 connected to the bus I / F 9 becomes H level, and the extension cable disconnection information is stored in the extension cable disconnection detection register in the bus I / F 9. .
- the extension cable disconnection detection signal 10 is disposed on both the left and right sides of the extension cable 8. As a result, even when the extension cable 8 is half disconnected, that is, when one of the left and right side portions is disconnected, it can be detected that the extension cable 8 is disconnected.
- the configuration of the programmable logic controller is not limited to the case described in this embodiment.
- the number of additional blocks provided in the programmable logic controller is not limited to two, and may be any number. Any number of input / output units may be provided in each block.
- the various units provided in the programmable logic controller may include units other than those described in this embodiment.
- FIG. 2 is a flowchart for explaining a procedure for diagnosing an internal bus communication abnormality by the programmable logic controller.
- the CPU unit 1 determines whether or not a communication abnormality has occurred in the entire internal bus 5 in the programmable logic controller (step S1). For example, the CPU unit 1 reads out abnormality detection data from the bus I / F 9 of each end cover 4 to determine whether or not a communication abnormality has occurred in the internal bus 5. If no communication abnormality has occurred (step S1, No), the CPU unit 1 ends the process.
- the communication abnormality in the internal bus 5 may be due to the disconnection of the branch unit 6, the disconnection of the extension cable 8, or the disconnection of various units other than the branch unit 6.
- step S1 If a communication error has occurred (step S1, Yes), the CPU unit 1 detects the error detection data and the extension cable from the bus I / F 9 of the branch unit 6 of the basic block 11 located in the preceding stage of the extension block 12. Information is read out (step S2). The CPU unit 1 determines whether or not the branch unit 6 is missing from the read abnormality detection data (step S3).
- step S3 If it is determined that the branch unit 6 is missing (step S3, Yes), the CPU unit 1 outputs an error notification indicating that the branch unit 6 of the basic block 11 is missing (step S7), and ends the process. .
- the CPU unit 1 determines whether or not the extension cable 8 has been disconnected from the read extension cable disconnection information (step S4).
- step S4 If it is determined that the extension cable 8 is disconnected (step S4, Yes), the CPU unit 1 outputs an error notification indicating that the extension cable 8 between the basic block 11 and the extension block 12 is disconnected (step S8). ), The process is terminated.
- step S4 the CPU unit 1 reads out the abnormality detection data from the various units of the extension block 12 and identifies the missing unit (step S5).
- the CPU unit 1 outputs an error notification indicating that the identified unit is missing (step S6), and ends the process.
- the CPU unit 1 further determines whether or not the branch unit 6 has been removed from the extension block 12 located in the preceding stage of the extension block 13. Further, the CPU unit 1 determines whether or not the extension cable 8 is disconnected between the extension block 13 and the extension block 12. Further, the CPU unit 1 identifies a missing unit from each unit of the extension block 13.
- the CPU unit 1 identifies a missing unit from each unit in the basic block 11.
- the programmable logic controller for example, periodically performs communication abnormality diagnosis described in the present embodiment.
- the programmable logic controller may perform communication abnormality diagnosis described in the present embodiment in accordance with a user operation.
- the CPU unit 1 can quickly notify the location where the communication abnormality has occurred by specifying the unit or the extension cable 8 in which the communication abnormality has occurred and performing error notification by a monitor, for example.
- the CPU unit 1 may identify the unit that has failed by the same diagnosis procedure as that for identifying the communication abnormality location of the internal bus 5.
- the programmable logic controller In the system in which the CPU unit 1 and each unit completely share the internal bus 5 by applying the bus I / F 9, the programmable logic controller according to the present embodiment identifies the abnormal part of the internal bus 5 as the CPU unit 1. Can be determined. Further, the programmable logic controller can detect whether the extension cable 8 is disconnected or not by the CPU unit 1 by holding the extension cable disconnection information in the bus I / F 9 of the branch unit 6. As a result, the programmable logic controller can accurately identify the location where the communication abnormality has occurred, and can improve troubleshooting.
- the programmable logic controller may handle the disconnection of the extension cable 8 at system startup as normal without causing a communication error. For example, when the user desires future system expansion, the programmable logic controller can be configured with the extension cable 8 disconnected. Thereby, the programmable logic controller can construct a system with a high degree of freedom.
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Abstract
Description
図1は、本発明の実施の形態にかかるプログラマブルロジックコントローラの構成を示すブロック図である。本実施の形態では、基本ブロック11と2つの増設ブロック12、13とから構成されるプログラマブルロジックコントローラを例とする。基本ブロック11と増設ブロック12とは、増設ケーブル8を介して接続されている。増設ブロック12と増設ブロック13とは、増設ケーブル8を介して接続されている。
2 入出力ユニット
3 共通コネクタ
4 エンドカバー
5 内部バス
6 分岐ユニット
7 増設ユニット
8 増設ケーブル
9 バスI/F
10 増設ケーブル抜け検出信号
11 基本ブロック
12、13 増設ブロック
Claims (3)
- CPUユニットと、
前記CPUユニットにより制御され、共通コネクタを介して連結された各種ユニットと、
前記CPUユニットおよび前記各種ユニット内を通して設けられ、前記CPUユニットおよび前記各種ユニットを接続する内部バスと、
前記各種ユニットの各々に共通して設けられ、前記内部バスの異常検出のための異常検出用データを保持するバスインタフェースと、を有し、
前記CPUユニットは、前記各種ユニットの前記バスインタフェースから読み出した前記異常検出用データを照合することにより、前記内部バスの異常箇所を検出することを特徴とするプログラマブルロジックコントローラ。 - 前記CPUユニットを含む基本ブロックと、
増設ケーブルを介して前記基本ブロックに連結された増設ブロックと、を有し、
前記基本ブロックは、前記内部バスを分岐させたうちの一つが前記増設ケーブルに接続可能とされた分岐ユニットを有し、
前記分岐ユニットは、前記増設ケーブルの抜けを検出するための増設ケーブル抜け情報を、前記バスインタフェースにおいて保持し、
前記CPUユニットは、前記分岐ユニットの前記バスインタフェースから読み出した前記増設ケーブル抜け情報から、前記増設ケーブルの接続状態を検出することを特徴とする請求項1に記載のプログラマブルロジックコントローラ。 - 前記CPUユニットは、前記内部バスに通信異常が有ると判断した場合に、前記通信異常が発生した前記各種ユニットあるいは前記増設ケーブルを特定し、エラー通知を行うことを特徴とする請求項2に記載のプログラマブルロジックコントローラ。
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/985,366 US9058294B2 (en) | 2011-03-22 | 2011-03-22 | Programmable logic controller |
JP2011540627A JP4926299B1 (ja) | 2011-03-22 | 2011-03-22 | プログラマブルロジックコントローラ |
CN201180069441.1A CN103430110B (zh) | 2011-03-22 | 2011-03-22 | 可编程逻辑控制器 |
KR1020137024444A KR101512921B1 (ko) | 2011-03-22 | 2011-03-22 | 프로그래머블 로직 컨트롤러 |
PCT/JP2011/056795 WO2012127612A1 (ja) | 2011-03-22 | 2011-03-22 | プログラマブルロジックコントローラ |
TW100134736A TW201239559A (en) | 2011-03-22 | 2011-09-27 | Programmable logic controller |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2011/056795 WO2012127612A1 (ja) | 2011-03-22 | 2011-03-22 | プログラマブルロジックコントローラ |
Publications (1)
Publication Number | Publication Date |
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WO2012127612A1 true WO2012127612A1 (ja) | 2012-09-27 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2011/056795 WO2012127612A1 (ja) | 2011-03-22 | 2011-03-22 | プログラマブルロジックコントローラ |
Country Status (6)
Country | Link |
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US (1) | US9058294B2 (ja) |
JP (1) | JP4926299B1 (ja) |
KR (1) | KR101512921B1 (ja) |
CN (1) | CN103430110B (ja) |
TW (1) | TW201239559A (ja) |
WO (1) | WO2012127612A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104298134A (zh) * | 2013-07-16 | 2015-01-21 | 波音公司 | 冗余电流总和反馈致动器 |
Families Citing this family (1)
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JP6724327B2 (ja) * | 2015-10-02 | 2020-07-15 | 株式会社ジェイテクト | プログラマブルコントローラ |
Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6160103A (ja) * | 1984-08-31 | 1986-03-27 | Omron Tateisi Electronics Co | プログラマブルコントロ−ラ |
JPH0214343A (ja) * | 1988-07-01 | 1990-01-18 | Fujitsu Ltd | データ処理装置 |
JPH05224964A (ja) * | 1992-02-13 | 1993-09-03 | Fujitsu Ltd | バス異常通知方式 |
JPH0950305A (ja) * | 1995-08-04 | 1997-02-18 | Hitachi Ltd | プログラマブルコントローラおよびその故障検出方法 |
JPH09114622A (ja) * | 1995-10-13 | 1997-05-02 | Mitsubishi Electric Corp | Crt表示装置 |
JP2002006910A (ja) * | 2000-06-27 | 2002-01-11 | Matsushita Electric Works Ltd | 更新機能付きプログラマブルコントローラおよびプログラマブルコントローラの機能拡張ユニットの機能更新方法 |
JP2007310719A (ja) * | 2006-05-19 | 2007-11-29 | Mitsubishi Electric Corp | ユニット形プログラマブルコントローラ |
JP2008084276A (ja) * | 2006-09-29 | 2008-04-10 | Omron Corp | Plc装置 |
JP2008097369A (ja) * | 2006-10-12 | 2008-04-24 | Omron Corp | Plc |
JP2008097523A (ja) * | 2006-10-16 | 2008-04-24 | Omron Corp | Plc装置 |
Family Cites Families (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3959775A (en) * | 1974-08-05 | 1976-05-25 | Gte Automatic Electric Laboratories Incorporated | Multiprocessing system implemented with microprocessors |
US5172310A (en) * | 1991-07-10 | 1992-12-15 | U.S. Windpower, Inc. | Low impedance bus for power electronics |
DE4420513A1 (de) * | 1994-06-13 | 1995-12-14 | Abb Management Ag | Verfahren und Vorrichtung zum Schutz von Sammelschienen |
JP2687927B2 (ja) * | 1995-05-24 | 1997-12-08 | 日本電気株式会社 | 外部バスの障害検出方法 |
JPH1074104A (ja) | 1996-08-30 | 1998-03-17 | Denso Corp | 制御装置の入力回路 |
JP2000333322A (ja) * | 1999-05-19 | 2000-11-30 | Mitsubishi Electric Corp | ガス絶縁開閉装置 |
JP2001045528A (ja) * | 1999-08-04 | 2001-02-16 | Fujitsu Ltd | 集合型回線終端装置及び回線終端網 |
US7149206B2 (en) * | 2001-02-08 | 2006-12-12 | Electronic Data Systems Corporation | System and method for managing wireless vehicular communications |
US6778939B2 (en) * | 2001-07-30 | 2004-08-17 | Alps Electric Co., Ltd. | Rotational angle detector which prevents controlled system from being improperly controlled |
JP3526293B2 (ja) * | 2001-11-30 | 2004-05-10 | 三菱電機株式会社 | プログラマブルコントローラ |
JP2005149294A (ja) | 2003-11-18 | 2005-06-09 | Omron Corp | 異常検出機能を有する入力装置 |
US7305324B2 (en) * | 2004-11-24 | 2007-12-04 | Ut-Battelle, Llc | System and method for identifying, validating, weighing and characterizing moving or stationary vehicles and cargo |
JP4766252B2 (ja) * | 2006-04-28 | 2011-09-07 | オムロン株式会社 | プログラマブルコントローラおよび通信ユニット |
US8238255B2 (en) * | 2006-11-22 | 2012-08-07 | Foundry Networks, Llc | Recovering from failures without impact on data traffic in a shared bus architecture |
US7917828B2 (en) * | 2006-12-28 | 2011-03-29 | Intel Corporation | Providing error correction coding for probed data |
JP4949914B2 (ja) | 2007-04-16 | 2012-06-13 | 日置電機株式会社 | 情報収集用子ユニットおよび情報収集システム |
JP4507125B2 (ja) * | 2007-09-10 | 2010-07-21 | 三菱電機株式会社 | プログラマブルコントローラ |
US8200990B2 (en) * | 2007-12-22 | 2012-06-12 | International Business Machines Corporation | Apparatus, system, and method for a high efficiency redundant power architecture |
CN201191375Y (zh) * | 2008-05-23 | 2009-02-04 | 东莞市启微电子有限公司 | 双向输入/输出的可编程控制器 |
JP5195168B2 (ja) | 2008-08-28 | 2013-05-08 | 富士通株式会社 | 接続状態診断装置 |
US8176220B2 (en) * | 2009-10-01 | 2012-05-08 | Oracle America, Inc. | Processor-bus-connected flash storage nodes with caching to support concurrent DMA accesses from multiple processors |
-
2011
- 2011-03-22 JP JP2011540627A patent/JP4926299B1/ja not_active Expired - Fee Related
- 2011-03-22 CN CN201180069441.1A patent/CN103430110B/zh not_active Expired - Fee Related
- 2011-03-22 KR KR1020137024444A patent/KR101512921B1/ko active IP Right Grant
- 2011-03-22 US US13/985,366 patent/US9058294B2/en not_active Expired - Fee Related
- 2011-03-22 WO PCT/JP2011/056795 patent/WO2012127612A1/ja active Application Filing
- 2011-09-27 TW TW100134736A patent/TW201239559A/zh unknown
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6160103A (ja) * | 1984-08-31 | 1986-03-27 | Omron Tateisi Electronics Co | プログラマブルコントロ−ラ |
JPH0214343A (ja) * | 1988-07-01 | 1990-01-18 | Fujitsu Ltd | データ処理装置 |
JPH05224964A (ja) * | 1992-02-13 | 1993-09-03 | Fujitsu Ltd | バス異常通知方式 |
JPH0950305A (ja) * | 1995-08-04 | 1997-02-18 | Hitachi Ltd | プログラマブルコントローラおよびその故障検出方法 |
JPH09114622A (ja) * | 1995-10-13 | 1997-05-02 | Mitsubishi Electric Corp | Crt表示装置 |
JP2002006910A (ja) * | 2000-06-27 | 2002-01-11 | Matsushita Electric Works Ltd | 更新機能付きプログラマブルコントローラおよびプログラマブルコントローラの機能拡張ユニットの機能更新方法 |
JP2007310719A (ja) * | 2006-05-19 | 2007-11-29 | Mitsubishi Electric Corp | ユニット形プログラマブルコントローラ |
JP2008084276A (ja) * | 2006-09-29 | 2008-04-10 | Omron Corp | Plc装置 |
JP2008097369A (ja) * | 2006-10-12 | 2008-04-24 | Omron Corp | Plc |
JP2008097523A (ja) * | 2006-10-16 | 2008-04-24 | Omron Corp | Plc装置 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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CN104298134A (zh) * | 2013-07-16 | 2015-01-21 | 波音公司 | 冗余电流总和反馈致动器 |
CN104298134B (zh) * | 2013-07-16 | 2018-08-28 | 波音公司 | 冗余电流总和反馈致动器 |
Also Published As
Publication number | Publication date |
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CN103430110B (zh) | 2016-12-07 |
JPWO2012127612A1 (ja) | 2014-07-24 |
KR101512921B1 (ko) | 2015-04-16 |
TW201239559A (en) | 2012-10-01 |
KR20130124385A (ko) | 2013-11-13 |
CN103430110A (zh) | 2013-12-04 |
JP4926299B1 (ja) | 2012-05-09 |
US9058294B2 (en) | 2015-06-16 |
US20130326287A1 (en) | 2013-12-05 |
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