JPS5479528A - Circulating information transmission system - Google Patents
Circulating information transmission systemInfo
- Publication number
- JPS5479528A JPS5479528A JP14678377A JP14678377A JPS5479528A JP S5479528 A JPS5479528 A JP S5479528A JP 14678377 A JP14678377 A JP 14678377A JP 14678377 A JP14678377 A JP 14678377A JP S5479528 A JPS5479528 A JP S5479528A
- Authority
- JP
- Japan
- Prior art keywords
- cpu11
- station
- information transmission
- function
- master
- 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.)
- Granted
Links
Landscapes
- Detection And Prevention Of Errors In Transmission (AREA)
- Small-Scale Networks (AREA)
Abstract
PURPOSE: To improve reliability by evading the breakdown of the entire system, by enabling the master station of function to revover through backup control immediately after the master station get into trouble during the system operation.
CONSTITUTION: This system is provided with CPU11 which exercises the management of the enitre system, and the 1st and 2nd master stations 131 and 132 which interpose in circulating information transmission lines L1 and L2, plus the 1st and 2nd direct memory access channels 121 and 122 connected to CPU11 corresponding to those stations 131 and 132. Then, CPU11 is enabled to function to transfer selectively data to either 1st station 131 or 2nd statiom 132 via channel 121 or 122; either channel 121 or 122 is made stand-by at a normal time and if either station 121 or 122 gets into trouble, it is switched to the other one through backup control immediately.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14678377A JPS5479528A (en) | 1977-12-07 | 1977-12-07 | Circulating information transmission system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14678377A JPS5479528A (en) | 1977-12-07 | 1977-12-07 | Circulating information transmission system |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5479528A true JPS5479528A (en) | 1979-06-25 |
JPS5741736B2 JPS5741736B2 (en) | 1982-09-04 |
Family
ID=15415425
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14678377A Granted JPS5479528A (en) | 1977-12-07 | 1977-12-07 | Circulating information transmission system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5479528A (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS547250A (en) * | 1977-06-20 | 1979-01-19 | Fuji Electric Co Ltd | Process computer control system |
-
1977
- 1977-12-07 JP JP14678377A patent/JPS5479528A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS547250A (en) * | 1977-06-20 | 1979-01-19 | Fuji Electric Co Ltd | Process computer control system |
Also Published As
Publication number | Publication date |
---|---|
JPS5741736B2 (en) | 1982-09-04 |
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