JPS5430383A - Back-up system of digital process controlling apparatus - Google Patents

Back-up system of digital process controlling apparatus

Info

Publication number
JPS5430383A
JPS5430383A JP9511477A JP9511477A JPS5430383A JP S5430383 A JPS5430383 A JP S5430383A JP 9511477 A JP9511477 A JP 9511477A JP 9511477 A JP9511477 A JP 9511477A JP S5430383 A JPS5430383 A JP S5430383A
Authority
JP
Japan
Prior art keywords
controlling apparatus
digital process
process controlling
reserve
upper grade
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
JP9511477A
Other languages
Japanese (ja)
Inventor
Hisanori Miyagaki
Eiji Toyama
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 JP9511477A priority Critical patent/JPS5430383A/en
Publication of JPS5430383A publication Critical patent/JPS5430383A/en
Pending legal-status Critical Current

Links

Landscapes

  • Feedback Control In General (AREA)
  • Safety Devices In Control Systems (AREA)

Abstract

PURPOSE: To obtain a back-up system which is small expensive and has a reliability irrespective of the increas e of the system scale by arranging reserve sub-computers in the systemin which an upper grade calculator controls a plurality of subcomputers and by allowing the upper grade calculator to switch to the reserve, when a subcomuputer gets out of order.
COPYRIGHT: (C)1979,JPO&Japio
JP9511477A 1977-08-10 1977-08-10 Back-up system of digital process controlling apparatus Pending JPS5430383A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9511477A JPS5430383A (en) 1977-08-10 1977-08-10 Back-up system of digital process controlling apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9511477A JPS5430383A (en) 1977-08-10 1977-08-10 Back-up system of digital process controlling apparatus

Publications (1)

Publication Number Publication Date
JPS5430383A true JPS5430383A (en) 1979-03-06

Family

ID=14128809

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9511477A Pending JPS5430383A (en) 1977-08-10 1977-08-10 Back-up system of digital process controlling apparatus

Country Status (1)

Country Link
JP (1) JPS5430383A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5760404A (en) * 1980-09-29 1982-04-12 Omron Tateisi Electronics Co Output unit of programmable logic controller
JPS598063A (en) * 1982-07-07 1984-01-17 Hitachi Ltd N:1 backup method of decentralized hierarchical system
US4850027A (en) * 1985-07-26 1989-07-18 International Business Machines Corporation Configurable parallel pipeline image processing system
US6148415A (en) * 1993-06-11 2000-11-14 Hitachi, Ltd. Backup switching control system and method

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5760404A (en) * 1980-09-29 1982-04-12 Omron Tateisi Electronics Co Output unit of programmable logic controller
JPH027083B2 (en) * 1980-09-29 1990-02-15 Omron Tateisi Electronics Co
JPS598063A (en) * 1982-07-07 1984-01-17 Hitachi Ltd N:1 backup method of decentralized hierarchical system
JPS6250857B2 (en) * 1982-07-07 1987-10-27 Hitachi Ltd
US4850027A (en) * 1985-07-26 1989-07-18 International Business Machines Corporation Configurable parallel pipeline image processing system
US6148415A (en) * 1993-06-11 2000-11-14 Hitachi, Ltd. Backup switching control system and method

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