JPS56157532A - Arithmetic device - Google Patents

Arithmetic device

Info

Publication number
JPS56157532A
JPS56157532A JP6191480A JP6191480A JPS56157532A JP S56157532 A JPS56157532 A JP S56157532A JP 6191480 A JP6191480 A JP 6191480A JP 6191480 A JP6191480 A JP 6191480A JP S56157532 A JPS56157532 A JP S56157532A
Authority
JP
Japan
Prior art keywords
processor
pulse
timer set
generated
set pulse
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
JP6191480A
Other languages
Japanese (ja)
Other versions
JPS627576B2 (en
Inventor
Yoichi Takabori
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 JP6191480A priority Critical patent/JPS56157532A/en
Publication of JPS56157532A publication Critical patent/JPS56157532A/en
Publication of JPS627576B2 publication Critical patent/JPS627576B2/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
    • G06F11/07—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
    • G06F11/0754—Error or fault detection not based on redundancy by exceeding limits
    • G06F11/0757—Error or fault detection not based on redundancy by exceeding limits by exceeding a time limit, i.e. time-out, e.g. watchdogs

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Debugging And Monitoring (AREA)

Abstract

PURPOSE:To stop the processor operation at the abnormality time, by generating a timer set pulse in accordance with the operation period of a processor and by resetting the processor to perform self-diagnosis by generating a pulse if the next timer set pulse is not generated at a prescribed time after receiving the timer set pulse. CONSTITUTION:The analogue signal from a process is converted to a digital signal by a input part interface circuit 1 and is stored in a storage device 2 through a microprocessor 3. A timer set pulse is generated in accordance with the operation period by this processor 3 and is inserted to the last of the program repeated at a prescribed period. If the next pulse is not outputted at a prescribed time after receiving this pulse, an output signal is generated in a output part interface circuit 4 to operate a timer circuit 6, and the reset switch 5 connected to the processor 3 is closed by the output of the timer circuit 6 to perform self-diagnosis, and the operation of the processor 3 is stopped at the abnormality time.
JP6191480A 1980-05-09 1980-05-09 Arithmetic device Granted JPS56157532A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6191480A JPS56157532A (en) 1980-05-09 1980-05-09 Arithmetic device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6191480A JPS56157532A (en) 1980-05-09 1980-05-09 Arithmetic device

Publications (2)

Publication Number Publication Date
JPS56157532A true JPS56157532A (en) 1981-12-04
JPS627576B2 JPS627576B2 (en) 1987-02-18

Family

ID=13184898

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6191480A Granted JPS56157532A (en) 1980-05-09 1980-05-09 Arithmetic device

Country Status (1)

Country Link
JP (1) JPS56157532A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52119836A (en) * 1976-04-02 1977-10-07 Hitachi Ltd Calculator control system
JPS5559559A (en) * 1978-10-30 1980-05-06 Hitachi Ltd Runaway detector for stored program control unit

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52119836A (en) * 1976-04-02 1977-10-07 Hitachi Ltd Calculator control system
JPS5559559A (en) * 1978-10-30 1980-05-06 Hitachi Ltd Runaway detector for stored program control unit

Also Published As

Publication number Publication date
JPS627576B2 (en) 1987-02-18

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