JPS62252235A - Runaway preventing system for processor of line switching device - Google Patents

Runaway preventing system for processor of line switching device

Info

Publication number
JPS62252235A
JPS62252235A JP61096067A JP9606786A JPS62252235A JP S62252235 A JPS62252235 A JP S62252235A JP 61096067 A JP61096067 A JP 61096067A JP 9606786 A JP9606786 A JP 9606786A JP S62252235 A JPS62252235 A JP S62252235A
Authority
JP
Japan
Prior art keywords
processor
runaway
relay
detection circuit
output
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.)
Withdrawn
Application number
JP61096067A
Other languages
Japanese (ja)
Other versions
JPH047862B2 (en
Inventor
Akio Takayasu
Kunihiko Matsumori
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP61096067A priority Critical patent/JPH047862B2/ja
Publication of JPS62252235A publication Critical patent/JPS62252235A/en
Publication of JPH047862B2 publication Critical patent/JPH047862B2/ja
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

PURPOSE: To suppress the damage of runaway at the minimum level, by adding a processor runaway detection circuit that detects the runaway of a processor, restoring a relay circuit by the output signal of the detection circuit, and returning a state to the one before the processor starts to run away.
CONSTITUTION: It is detected whether a processor 12 runs away or not by adding a processor runaway detecting circuit 50 on a processor 12, and if the processor is running away, a relay 10 ie restored to a normal state. One example is as follow. When a runaway detecting program is executed with a constant cycle, and the program is executed normally, a mark is put on a register provided within the processor runaway detection circuit 50, and the time interval of the generation of a mark signal is monitored by a timer. When no mark signal arrives within a certain regulated time interval, it is decided that the runaway of the processor 12 is generated, then the relay 10 is restored. Also, in a case that the processor 12 has a system to output a pulse on a fetch cycle, it is possible to detect the runaway by monitoring the output pulse.
COPYRIGHT: (C)1987,JPO&Japio
JP61096067A 1986-04-25 1986-04-25 Expired - Fee Related JPH047862B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP61096067A JPH047862B2 (en) 1986-04-25 1986-04-25

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP61096067A JPH047862B2 (en) 1986-04-25 1986-04-25

Publications (2)

Publication Number Publication Date
JPS62252235A true JPS62252235A (en) 1987-11-04
JPH047862B2 JPH047862B2 (en) 1992-02-13

Family

ID=14155077

Family Applications (1)

Application Number Title Priority Date Filing Date
JP61096067A Expired - Fee Related JPH047862B2 (en) 1986-04-25 1986-04-25

Country Status (1)

Country Link
JP (1) JPH047862B2 (en)

Also Published As

Publication number Publication date
JPH047862B2 (en) 1992-02-13

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees