JPS5486081A - Redundancy system of digital controller system - Google Patents

Redundancy system of digital controller system

Info

Publication number
JPS5486081A
JPS5486081A JP15286177A JP15286177A JPS5486081A JP S5486081 A JPS5486081 A JP S5486081A JP 15286177 A JP15286177 A JP 15286177A JP 15286177 A JP15286177 A JP 15286177A JP S5486081 A JPS5486081 A JP S5486081A
Authority
JP
Japan
Prior art keywords
station
loop
control
control station
disorder
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
Application number
JP15286177A
Other languages
Japanese (ja)
Inventor
Keisuke Takada
Kazutaka Osagawa
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP15286177A priority Critical patent/JPS5486081A/en
Publication of JPS5486081A publication Critical patent/JPS5486081A/en
Pending legal-status Critical Current

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  • Control By Computers (AREA)
  • Safety Devices In Control Systems (AREA)

Abstract

PURPOSE: To minimize spreading effect caused by the disorder of system by providing two loop stations actuating as the primary and the secondary with respect to the same control loop by exchanging from the primary to the secondary for the abnormal condition.
CONSTITUTION: Main loop station 16 takes in the detecting value PV with the control of control station to produce the operation power MV. The transmission between the loop station and control station is operated through the analog bus 11 and digital bus 12. The control station controls concurrently the secondary control station 17, by which the outputs of both stations are followed-up. Now, with the disorder of the main station, the relay is actuated to change the secondary loop station by actuating the switch 19.
COPYRIGHT: (C)1979,JPO&Japio
JP15286177A 1977-12-21 1977-12-21 Redundancy system of digital controller system Pending JPS5486081A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15286177A JPS5486081A (en) 1977-12-21 1977-12-21 Redundancy system of digital controller system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15286177A JPS5486081A (en) 1977-12-21 1977-12-21 Redundancy system of digital controller system

Publications (1)

Publication Number Publication Date
JPS5486081A true JPS5486081A (en) 1979-07-09

Family

ID=15549717

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15286177A Pending JPS5486081A (en) 1977-12-21 1977-12-21 Redundancy system of digital controller system

Country Status (1)

Country Link
JP (1) JPS5486081A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0399302A (en) * 1989-09-05 1991-04-24 Honeywell Inc Process controller
JPH03156602A (en) * 1989-11-15 1991-07-04 Hitachi Ltd Method and device for control of plant

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4912747A (en) * 1972-05-12 1974-02-04
JPS5183978A (en) * 1975-01-20 1976-07-22 Hitachi Ltd

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4912747A (en) * 1972-05-12 1974-02-04
JPS5183978A (en) * 1975-01-20 1976-07-22 Hitachi Ltd

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0399302A (en) * 1989-09-05 1991-04-24 Honeywell Inc Process controller
JPH03156602A (en) * 1989-11-15 1991-07-04 Hitachi Ltd Method and device for control of plant

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