JPS57114901A - Plant controller - Google Patents

Plant controller

Info

Publication number
JPS57114901A
JPS57114901A JP34881A JP34881A JPS57114901A JP S57114901 A JPS57114901 A JP S57114901A JP 34881 A JP34881 A JP 34881A JP 34881 A JP34881 A JP 34881A JP S57114901 A JPS57114901 A JP S57114901A
Authority
JP
Japan
Prior art keywords
circuit
station
stations
controller
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.)
Granted
Application number
JP34881A
Other languages
Japanese (ja)
Other versions
JPH0124398B2 (en
Inventor
Norihiko Sugimoto
Kanman Hamada
Ikuro Masuda
Jinichi Sakurai
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP34881A priority Critical patent/JPS57114901A/en
Priority to US06/335,689 priority patent/US4500951A/en
Publication of JPS57114901A publication Critical patent/JPS57114901A/en
Publication of JPH0124398B2 publication Critical patent/JPH0124398B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/22—Detection or location of defective computer hardware by testing during standby operation or during idle time, e.g. start-up testing
    • 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
    • G05B9/00—Safety arrangements
    • G05B9/02—Safety arrangements electric
    • G05B9/03—Safety arrangements electric with multiple-channel loop, i.e. redundant control systems
    • 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
    • G06F11/20—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements
    • G06F11/202—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements where processing functionality is redundant
    • G06F11/2023—Failover techniques
    • G06F11/2033—Failover techniques switching over of hardware resources

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Quality & Reliability (AREA)
  • Computer Hardware Design (AREA)
  • Automation & Control Theory (AREA)
  • Small-Scale Networks (AREA)
  • Selective Calling Equipment (AREA)
  • Safety Devices In Control Systems (AREA)

Abstract

PURPOSE:To increase the reliability so that failures in a station can not be effected to other stations, and to make large-scale circuit integration easy, by providing a communication interface circuit and a self-diagnosing circuit common to each station including a controller station, and enabling each station for equal communication. CONSTITUTION:One-loop controlling controller stations 1, 2 incorporating a microcomputer control a plant 3. The control stations 1, 2 are connected to channels 7a, 7b via transmission/reception signal lines 17a, 17b and switches 9a, 9b. The controller stations 1, 2 consist of a communication interface circuit 11 making communication control, self-diagnosing circuit 12, a plant controlling circuit 14 controlling the plant 3, and a control circuit 13 including a microcomputer which controls the whole system. The circuits 11, 12 and 14 are circuits common to an N:1 backup circuit 4 and a display station 5 as well as the controller stations 1, 2. The circuit 11 makes equal communication with other stations and the circuit 12 disconnects the station itself from the channels 7a, 7b when it is in failure.
JP34881A 1981-01-07 1981-01-07 Plant controller Granted JPS57114901A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP34881A JPS57114901A (en) 1981-01-07 1981-01-07 Plant controller
US06/335,689 US4500951A (en) 1981-01-07 1981-12-30 Plant control system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP34881A JPS57114901A (en) 1981-01-07 1981-01-07 Plant controller

Publications (2)

Publication Number Publication Date
JPS57114901A true JPS57114901A (en) 1982-07-17
JPH0124398B2 JPH0124398B2 (en) 1989-05-11

Family

ID=11471341

Family Applications (1)

Application Number Title Priority Date Filing Date
JP34881A Granted JPS57114901A (en) 1981-01-07 1981-01-07 Plant controller

Country Status (1)

Country Link
JP (1) JPS57114901A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0138135A2 (en) * 1983-10-07 1985-04-24 Honeywell Inc. Plant management system
JPS62182802A (en) * 1986-02-05 1987-08-11 Nec Corp Anti-fault process controller
JPH01279301A (en) * 1988-05-02 1989-11-09 Mitsubishi Electric Corp Computer decentralizing system
JP2016091252A (en) * 2014-11-04 2016-05-23 Ｎｅｃスペーステクノロジー株式会社 IEEE1394 interface circuit

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03114900U (en) * 1990-03-08 1991-11-26

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5062550A (en) * 1973-10-03 1975-05-28
JPS52139457A (en) * 1976-05-17 1977-11-21 Toshiba Corp Loop-like data transmitting system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5062550A (en) * 1973-10-03 1975-05-28
JPS52139457A (en) * 1976-05-17 1977-11-21 Toshiba Corp Loop-like data transmitting system

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0138135A2 (en) * 1983-10-07 1985-04-24 Honeywell Inc. Plant management system
EP0138135A3 (en) * 1983-10-07 1987-03-25 Honeywell Inc. Plant management system
JPS62182802A (en) * 1986-02-05 1987-08-11 Nec Corp Anti-fault process controller
JPH01279301A (en) * 1988-05-02 1989-11-09 Mitsubishi Electric Corp Computer decentralizing system
JP2554268B2 (en) * 1988-05-02 1996-11-13 三菱電機株式会社 Computer distributed system
JP2016091252A (en) * 2014-11-04 2016-05-23 Ｎｅｃスペーステクノロジー株式会社 IEEE1394 interface circuit

Also Published As

Publication number Publication date
JPH0124398B2 (en) 1989-05-11

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