JPS57182255A - Preventing device for runaway of computer - Google Patents
Preventing device for runaway of computerInfo
- Publication number
- JPS57182255A JPS57182255A JP56063955A JP6395581A JPS57182255A JP S57182255 A JPS57182255 A JP S57182255A JP 56063955 A JP56063955 A JP 56063955A JP 6395581 A JP6395581 A JP 6395581A JP S57182255 A JPS57182255 A JP S57182255A
- Authority
- JP
- Japan
- Prior art keywords
- timer
- computer
- runaway
- contacts
- time
- 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
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Quality & Reliability (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Debugging And Monitoring (AREA)
Abstract
PURPOSE:To prevent an accident due to a runaway by providing a program for reinitializing a timer before the time-up of the timer, and then powering down a computer by putting the timer in a time-up state when a soft program enters into a runaway. CONSTITUTION:The command signal output of a microcomputer (mu computer)1 turns on and off relays 9 and 10, whose contacts 9a and 10b are placed in the opposite states to each other; and a timer 7 initializes its timer value at every switching period T1 of the contacts 9a and 10b, and the contacts 7a1, 7a2, and 7b of the timer 7 never operate to continuously power up the power source unit 2 of the mu computer 1 through an operating relay 6. If the program execution of the mu computer 1 becomes abnormal and command outputs to the relays 9 and 10 are not switched any more,the timer 7 enters into a time-up state without being initialized, and then a pilot lamp 8 turns on through the contact 7a1 while the relay 6 is released through the contact 7b to power down the power source unit 2, so the mu computer 1 is also powered down, stopping the runaway of a body to be controlled.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56063955A JPS57182255A (en) | 1981-04-30 | 1981-04-30 | Preventing device for runaway of computer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56063955A JPS57182255A (en) | 1981-04-30 | 1981-04-30 | Preventing device for runaway of computer |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57182255A true JPS57182255A (en) | 1982-11-10 |
Family
ID=13244245
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP56063955A Pending JPS57182255A (en) | 1981-04-30 | 1981-04-30 | Preventing device for runaway of computer |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57182255A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6125648U (en) * | 1984-07-13 | 1986-02-15 | 富士通株式会社 | Peripheral device protection device |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5559559A (en) * | 1978-10-30 | 1980-05-06 | Hitachi Ltd | Runaway detector for stored program control unit |
JPS55138154A (en) * | 1979-04-16 | 1980-10-28 | Hitachi Ltd | Uncontrolled run detector of control circuit |
-
1981
- 1981-04-30 JP JP56063955A patent/JPS57182255A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5559559A (en) * | 1978-10-30 | 1980-05-06 | Hitachi Ltd | Runaway detector for stored program control unit |
JPS55138154A (en) * | 1979-04-16 | 1980-10-28 | Hitachi Ltd | Uncontrolled run detector of control circuit |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6125648U (en) * | 1984-07-13 | 1986-02-15 | 富士通株式会社 | Peripheral device protection device |
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