JPS5559559A - Runaway detector for stored program control unit - Google Patents
Runaway detector for stored program control unitInfo
- 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
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
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)
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 |
-
1978
- 1978-10-30 JP JP13258778A patent/JPS5559559A/en active Pending
Cited By (13)
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 |
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