JPS6472242A - Self-diagnosing device for computer for control - Google Patents

Self-diagnosing device for computer for control

Info

Publication number
JPS6472242A
JPS6472242A JP22839287A JP22839287A JPS6472242A JP S6472242 A JPS6472242 A JP S6472242A JP 22839287 A JP22839287 A JP 22839287A JP 22839287 A JP22839287 A JP 22839287A JP S6472242 A JPS6472242 A JP S6472242A
Authority
JP
Japan
Prior art keywords
cpus
memory area
runaway
information
power
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
JP22839287A
Other languages
Japanese (ja)
Inventor
Shiyouji Ikuhara
Atsushi Ito
Yoshinao Kawasaki
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
Hitachi Plant Technologies Ltd
Original Assignee
Hitachi Techno Engineering Co Ltd
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 Techno Engineering Co Ltd, Hitachi Ltd filed Critical Hitachi Techno Engineering Co Ltd
Priority to JP22839287A priority Critical patent/JPS6472242A/en
Publication of JPS6472242A publication Critical patent/JPS6472242A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To easily study the factor of the computer runaway by knowing the internal information on a CPU right before a power supply is interrupted. CONSTITUTION:An information memory area is stored with back-up of a battery. When the runaway occurs, the watchdog times (WDT) 9 of control CPUs 2-5 work via a power supply interrupting means 11. Thus the supply of power to the CPUs 2-5 is interrupted. In this case, the memory area receives the supply of power from the battery and the contents of the memory area are held. Thus the internal information on the CPUs 2-5 are stored in the memory area when the runaway occurs and then read out to another memory area when the CPUs 2-5 are led again by an information transfer means. Thus it is possible to know the internal states of those CPUs during the runway and therefore to easily study the factor of the runaway.
JP22839287A 1987-09-14 1987-09-14 Self-diagnosing device for computer for control Pending JPS6472242A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP22839287A JPS6472242A (en) 1987-09-14 1987-09-14 Self-diagnosing device for computer for control

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP22839287A JPS6472242A (en) 1987-09-14 1987-09-14 Self-diagnosing device for computer for control

Publications (1)

Publication Number Publication Date
JPS6472242A true JPS6472242A (en) 1989-03-17

Family

ID=16875748

Family Applications (1)

Application Number Title Priority Date Filing Date
JP22839287A Pending JPS6472242A (en) 1987-09-14 1987-09-14 Self-diagnosing device for computer for control

Country Status (1)

Country Link
JP (1) JPS6472242A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0773065A (en) * 1993-09-01 1995-03-17 Nec Corp Emulator
JP2015049731A (en) * 2013-09-02 2015-03-16 キヤノン株式会社 Image forming apparatus, control method of image forming apparatus, and program

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0773065A (en) * 1993-09-01 1995-03-17 Nec Corp Emulator
JP2015049731A (en) * 2013-09-02 2015-03-16 キヤノン株式会社 Image forming apparatus, control method of image forming apparatus, and program

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