JPS54109738A - Fault diagnosis system for duplicating central process system - Google Patents

Fault diagnosis system for duplicating central process system

Info

Publication number
JPS54109738A
JPS54109738A JP1590778A JP1590778A JPS54109738A JP S54109738 A JPS54109738 A JP S54109738A JP 1590778 A JP1590778 A JP 1590778A JP 1590778 A JP1590778 A JP 1590778A JP S54109738 A JPS54109738 A JP S54109738A
Authority
JP
Japan
Prior art keywords
fault
contents
plus
duplicating
fault diagnosis
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
JP1590778A
Other languages
Japanese (ja)
Other versions
JPS5949619B2 (en
Inventor
Yoshio Yoshiura
Hiroshi Fujita
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 JP53015907A priority Critical patent/JPS5949619B2/en
Publication of JPS54109738A publication Critical patent/JPS54109738A/en
Publication of JPS5949619B2 publication Critical patent/JPS5949619B2/en
Expired legal-status Critical Current

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Abstract

PURPOSE: To secure the switching to the other process system in case the fault takes place at one process system and at the same time to write the contents of the system containing the fault into the auxiliary memory device, and thus to perform the automatic diagnosis of the fault via the normal system and based on the written memory contents.
CONSTITUTION: Auxiliary memory device 216 and channel 214 are formed into a common device, and other main memory 200 and 210 plus CPU202 and 212 are duplicated. For the fault diagnosis system of such duplicating central system, data transfer unit 218 is provided to detect the system-down of the system in the access state containing 200 and 210 plus 202 and 212. Then the memory contents is memorized directly into device 216 via channel 217 from 200 or 210 of the faulty system, and the contents memorized in unit 218 via 210 or 200 plus 212 or 202 which was switched to the access state due to the fault occurrence. Thus, the cause of the fault is diagnosed.
COPYRIGHT: (C)1979,JPO&Japio
JP53015907A 1978-02-16 1978-02-16 Fault diagnosis method for redundant central processing system Expired JPS5949619B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP53015907A JPS5949619B2 (en) 1978-02-16 1978-02-16 Fault diagnosis method for redundant central processing system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP53015907A JPS5949619B2 (en) 1978-02-16 1978-02-16 Fault diagnosis method for redundant central processing system

Publications (2)

Publication Number Publication Date
JPS54109738A true JPS54109738A (en) 1979-08-28
JPS5949619B2 JPS5949619B2 (en) 1984-12-04

Family

ID=11901835

Family Applications (1)

Application Number Title Priority Date Filing Date
JP53015907A Expired JPS5949619B2 (en) 1978-02-16 1978-02-16 Fault diagnosis method for redundant central processing system

Country Status (1)

Country Link
JP (1) JPS5949619B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56111865A (en) * 1980-02-08 1981-09-03 Toshiba Corp Paper supplying device of recorder or the like
JPS60246453A (en) * 1984-05-21 1985-12-06 Fuji Electric Co Ltd Fault diagnosing system of control device
JPS61258796A (en) * 1985-05-14 1986-11-17 沖電気工業株式会社 Transfer request recording passbook and transfer transactiontreatment system
JPS63262729A (en) * 1987-04-21 1988-10-31 Fujitsu Ltd Data collecting system at the time of generation of abnormality in multi-processor system

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56111865A (en) * 1980-02-08 1981-09-03 Toshiba Corp Paper supplying device of recorder or the like
JPS6222891B2 (en) * 1980-02-08 1987-05-20 Tokyo Shibaura Electric Co
JPS60246453A (en) * 1984-05-21 1985-12-06 Fuji Electric Co Ltd Fault diagnosing system of control device
JPS61258796A (en) * 1985-05-14 1986-11-17 沖電気工業株式会社 Transfer request recording passbook and transfer transactiontreatment system
JPH0566278B2 (en) * 1985-05-14 1993-09-21 Oki Electric Ind Co Ltd
JPS63262729A (en) * 1987-04-21 1988-10-31 Fujitsu Ltd Data collecting system at the time of generation of abnormality in multi-processor system

Also Published As

Publication number Publication date
JPS5949619B2 (en) 1984-12-04

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