JPS6431245A - System for supervizing time - Google Patents
System for supervizing timeInfo
- Publication number
- JPS6431245A JPS6431245A JP62186931A JP18693187A JPS6431245A JP S6431245 A JPS6431245 A JP S6431245A JP 62186931 A JP62186931 A JP 62186931A JP 18693187 A JP18693187 A JP 18693187A JP S6431245 A JPS6431245 A JP S6431245A
- Authority
- JP
- Japan
- Prior art keywords
- time
- supervizing
- timer
- value
- channel
- 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 preferably execute the time supervizing with high accuracy by the use of the processor of comparatively low speed and to prevent the accuracy from being reduced to the time supervizing of the low accuracy by providing a hardware timer in which the time is renewed by one unit when a constant time passes over. CONSTITUTION:At the starting time of the time supervizing of respective channels, a time supervizing control part 50 writes the starting time value of a hardware timer 21 and a supervizing timer value to an area 200 of a channel corresponding provided in a control memory 122. During the time supervizing of the respective channels, the detection processing of a time-out is executed by comparing a difference between the time value and the starting time value shown by the hardware timer 21 and the supervizing timer value. When the time is renewed in the hardware timer 21, the timer supervizing control part 50 prior executes the detection processing of the time-out of a supervizing timer to the channel to execute a high accuracy supervision out of the respective channels. Concerning the time-out detection of the supervizing timer to the channel to executed a low accuracy supervision, it is executed when a signal line is processed to the channel to use the hardware timer 21.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62186931A JPS6431245A (en) | 1987-07-27 | 1987-07-27 | System for supervizing time |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62186931A JPS6431245A (en) | 1987-07-27 | 1987-07-27 | System for supervizing time |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6431245A true JPS6431245A (en) | 1989-02-01 |
Family
ID=16197221
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62186931A Pending JPS6431245A (en) | 1987-07-27 | 1987-07-27 | System for supervizing time |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6431245A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5734641A (en) * | 1994-06-10 | 1998-03-31 | Fujitsu Limited | Device and method for discriminating timeout |
-
1987
- 1987-07-27 JP JP62186931A patent/JPS6431245A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5734641A (en) * | 1994-06-10 | 1998-03-31 | Fujitsu Limited | Device and method for discriminating timeout |
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