JPS5559559A - Runaway detector for stored program control unit - Google Patents

Runaway detector for stored program control unit

Info

Publication number
JPS5559559A
JPS5559559A JP13258778A JP13258778A JPS5559559A JP S5559559 A JPS5559559 A JP S5559559A JP 13258778 A JP13258778 A JP 13258778A JP 13258778 A JP13258778 A JP 13258778A JP S5559559 A JPS5559559 A JP S5559559A
Authority
JP
Japan
Prior art keywords
circuit
program
output
cycle
delivered
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
JP13258778A
Other languages
Japanese (ja)
Inventor
Shinji Matsuoka
Shoichi Ito
Hideyuki Omori
Mitsuhiro Nakagaki
Mitsuo Suzuki
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 JP13258778A priority Critical patent/JPS5559559A/en
Publication of JPS5559559A publication Critical patent/JPS5559559A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To obtain a low-cost runaway detector featuring a simple circuit structure by detecting whether the interval of the pulse signals delivered cyclically is longer than the fixed cycle via the program.
CONSTITUTION: With rise of reset signal GR, microprocess unit (MPU) 1 starts the execution to deliver pulse PA from input interface adaptor (PIA) 4 after time Ta. As a result, the trigger is applied to one-shot circuit 11, and the output Q1 has a rise. And PA is delivered again after Ta in case the program is carried out normally. As set time Tb of circuit 11 is larger slightly than the cycle of PA, output Q1 of circuit 11 is set and continued. When the runaway takes place to the program, no PA is delivered or the cycle of the pulse becomes longer than the fixed cycle Ta. As a result, the trigger of circuit 11 discontinues. With the fall of Q1, FF12 is set, and such treatment as the alarm display or the cut-off of the power supply are given by output RA.
COPYRIGHT: (C)1980,JPO&Japio
JP13258778A 1978-10-30 1978-10-30 Runaway detector for stored program control unit Pending JPS5559559A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13258778A JPS5559559A (en) 1978-10-30 1978-10-30 Runaway detector for stored program control unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13258778A JPS5559559A (en) 1978-10-30 1978-10-30 Runaway detector for stored program control unit

Publications (1)

Publication Number Publication Date
JPS5559559A true JPS5559559A (en) 1980-05-06

Family

ID=15084817

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13258778A Pending JPS5559559A (en) 1978-10-30 1978-10-30 Runaway detector for stored program control unit

Country Status (1)

Country Link
JP (1) JPS5559559A (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56157532A (en) * 1980-05-09 1981-12-04 Hitachi Ltd Arithmetic device
JPS57176237A (en) * 1981-04-18 1982-10-29 Toyoda Automatic Loom Works Monitoring of micro-computer in loom
JPS57176241A (en) * 1981-04-18 1982-10-29 Toyoda Automatic Loom Works Operation display of micro-computer in loom
JPS57175241U (en) * 1981-04-29 1982-11-05
JPS57182255A (en) * 1981-04-30 1982-11-10 Hitachi Ltd Preventing device for runaway of computer
WO1982003929A1 (en) * 1981-05-06 1982-11-11 Tomisawa Naoki A program runaway monitoring circuit for computers
JPS5859188A (en) * 1981-10-05 1983-04-08 讃岐「鉄」工株式会社 Master and slave type overhead travelling device in structure
JPS5880746A (en) * 1981-11-06 1983-05-14 Matsushita Electric Ind Co Ltd Self-diagnosing system of microcomputer
JPS59166129A (en) * 1983-03-10 1984-09-19 コーリン電子株式会社 Blood pressure measuring apparatus with microcomputer
JPS6047054U (en) * 1984-08-13 1985-04-02 株式会社日立製作所 arithmetic processing unit
JPH026343U (en) * 1988-06-27 1990-01-17

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS627576B2 (en) * 1980-05-09 1987-02-18 Hitachi Ltd
JPS56157532A (en) * 1980-05-09 1981-12-04 Hitachi Ltd Arithmetic device
JPS57176237A (en) * 1981-04-18 1982-10-29 Toyoda Automatic Loom Works Monitoring of micro-computer in loom
JPS57176241A (en) * 1981-04-18 1982-10-29 Toyoda Automatic Loom Works Operation display of micro-computer in loom
JPS57175241U (en) * 1981-04-29 1982-11-05
JPS57182255A (en) * 1981-04-30 1982-11-10 Hitachi Ltd Preventing device for runaway of computer
WO1982003929A1 (en) * 1981-05-06 1982-11-11 Tomisawa Naoki A program runaway monitoring circuit for computers
JPS5859188A (en) * 1981-10-05 1983-04-08 讃岐「鉄」工株式会社 Master and slave type overhead travelling device in structure
JPS5880746A (en) * 1981-11-06 1983-05-14 Matsushita Electric Ind Co Ltd Self-diagnosing system of microcomputer
JPS59166129A (en) * 1983-03-10 1984-09-19 コーリン電子株式会社 Blood pressure measuring apparatus with microcomputer
JPH046371B2 (en) * 1983-03-10 1992-02-05 Colin Electronics
JPS6047054U (en) * 1984-08-13 1985-04-02 株式会社日立製作所 arithmetic processing unit
JPH026343U (en) * 1988-06-27 1990-01-17

Similar Documents

Publication Publication Date Title
JPS547263A (en) D-a converter
JPS5559559A (en) Runaway detector for stored program control unit
JPS545524A (en) Flow rate control oscillator circuit for shopper control
JPS5633718A (en) Resetting method and its device for electronic control type controller
JPS548817A (en) Digital controller for motor
JPS547641A (en) High-frequency heating device
JPS54103647A (en) Program process monitor system
JPS53129556A (en) Clock control system
JPS5549722A (en) Computer power supply system
JPS5250550A (en) Automatic restarter for power circuit
JPS53127246A (en) Control program check system
JPS5336438A (en) Input/output control unit
JPS5578347A (en) Operation monitor system of microprocessor
JPS53113577A (en) Setting time output system of timer
JPS51119266A (en) Electronic timer device
JPS5225521A (en) Control signal receiver unit for facsimille
JPS54530A (en) Reference control unit of memory
JPS5420625A (en) Fault discrimination ststem of memory system
JPS53142157A (en) Noise protection circuit
JPS5440071A (en) Electronic timer device
JPS53148936A (en) Electronic control device
JPS53126552A (en) High frequency wave heating device
JPS5245231A (en) Program execution condition monitoring system
JPS53139072A (en) Controller
JPS5592026A (en) Pulse period monitor circuit