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JPS56101253A - Programmable controller - Google Patents

Programmable controller

Info

Publication number
JPS56101253A
JPS56101253A JP377580A JP377580A JPS56101253A JP S56101253 A JPS56101253 A JP S56101253A JP 377580 A JP377580 A JP 377580A JP 377580 A JP377580 A JP 377580A JP S56101253 A JPS56101253 A JP S56101253A
Authority
JP
Japan
Prior art keywords
unit
result
failure
data
output data
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
JP377580A
Other languages
Japanese (ja)
Inventor
Naoaki Iwasaki
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 JP377580A priority Critical patent/JPS56101253A/en
Publication of JPS56101253A publication Critical patent/JPS56101253A/en
Pending 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
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/16—Error detection or correction of the data by redundancy in hardware

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Test And Diagnosis Of Digital Computers (AREA)
  • Programmable Controllers (AREA)

Abstract

PURPOSE:To obtain PC in which the result of processing of the user program processing unit is used as the external output data and the result of processing of other unit is used as external output data when this unit is judged as a failure. CONSTITUTION:The 1st and 2nd user programming units 4, 7 are independently operated and execute the user program according to the program of inidividual memories 5 and 8. As a result, the failure diagnosis data of itself and external input and output data are formed and they are transmitted to an input and output processing unit 10 via interfaces 8, 9 and 12. If a fialure is detected in the data, another user program processing unit is used, allowing to constitute PC which need not to know the switching of hardware at the production of failure of the said unit.
JP377580A 1980-01-17 1980-01-17 Programmable controller Pending JPS56101253A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP377580A JPS56101253A (en) 1980-01-17 1980-01-17 Programmable controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP377580A JPS56101253A (en) 1980-01-17 1980-01-17 Programmable controller

Publications (1)

Publication Number Publication Date
JPS56101253A true JPS56101253A (en) 1981-08-13

Family

ID=11566546

Family Applications (1)

Application Number Title Priority Date Filing Date
JP377580A Pending JPS56101253A (en) 1980-01-17 1980-01-17 Programmable controller

Country Status (1)

Country Link
JP (1) JPS56101253A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5082296A (en) * 1989-04-07 1992-01-21 extra-ministerial bureau of Ministry of International Trade and Industry, Japan Agency for Industrial Science and Technology Spiral wound gasket and fabrication method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5082296A (en) * 1989-04-07 1992-01-21 extra-ministerial bureau of Ministry of International Trade and Industry, Japan Agency for Industrial Science and Technology Spiral wound gasket and fabrication method thereof

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