JPS6419436A - Synchronous operation data collating system - Google Patents
Synchronous operation data collating systemInfo
- Publication number
- JPS6419436A JPS6419436A JP62174918A JP17491887A JPS6419436A JP S6419436 A JPS6419436 A JP S6419436A JP 62174918 A JP62174918 A JP 62174918A JP 17491887 A JP17491887 A JP 17491887A JP S6419436 A JPS6419436 A JP S6419436A
- Authority
- JP
- Japan
- Prior art keywords
- ccu
- control
- systems
- devices
- monitor
- 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
Landscapes
- Hardware Redundancy (AREA)
Abstract
PURPOSE:To reduce the processing burden on a central control unit CCU by synchronizing control states of both systems with each other without data transfer between the CCU and a CCU to switch systems without momentary break at the time of system switching and restoration. CONSTITUTION:Common control information from a CCU 1 is given to devices 2A and 2B to be controlled of the current system and the stand-by system, and control means CCUs 22A and 22B of both systems control and monitor their own devices by this control information. Control and monitor states of devices 2A and 2B to be controlled are not reported to the CCU at all, and CPUs 22A and 22B of both systems compare data with each other to check coincidence. Thus, the monitor work of the CCU 1 is simplified and the processing burden on the CCU 1 is reduced.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62174918A JPS6419436A (en) | 1987-07-15 | 1987-07-15 | Synchronous operation data collating system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62174918A JPS6419436A (en) | 1987-07-15 | 1987-07-15 | Synchronous operation data collating system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6419436A true JPS6419436A (en) | 1989-01-23 |
Family
ID=15986987
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62174918A Pending JPS6419436A (en) | 1987-07-15 | 1987-07-15 | Synchronous operation data collating system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6419436A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04359322A (en) * | 1990-09-26 | 1992-12-11 | Honeywell Inc | Backup method for general-purpose input/output redundancy method in process control system |
JP2008067255A (en) * | 2006-09-11 | 2008-03-21 | Hitachi Kokusai Electric Inc | Control method of program transmission system |
US8639967B2 (en) | 2009-02-20 | 2014-01-28 | Fujitsu Limited | Controlling apparatus, method for controlling apparatus and information processing apparatus |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5783865A (en) * | 1980-11-12 | 1982-05-25 | Hitachi Ltd | Processing system of multisystem |
JPS5786970A (en) * | 1980-11-19 | 1982-05-31 | Yokogawa Hokushin Electric Corp | Doubled computer system |
JPS5789150A (en) * | 1980-11-26 | 1982-06-03 | Toshiba Corp | Method for making coincident stored information of multiple electronic computer system |
-
1987
- 1987-07-15 JP JP62174918A patent/JPS6419436A/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5783865A (en) * | 1980-11-12 | 1982-05-25 | Hitachi Ltd | Processing system of multisystem |
JPS5786970A (en) * | 1980-11-19 | 1982-05-31 | Yokogawa Hokushin Electric Corp | Doubled computer system |
JPS5789150A (en) * | 1980-11-26 | 1982-06-03 | Toshiba Corp | Method for making coincident stored information of multiple electronic computer system |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04359322A (en) * | 1990-09-26 | 1992-12-11 | Honeywell Inc | Backup method for general-purpose input/output redundancy method in process control system |
JP2008067255A (en) * | 2006-09-11 | 2008-03-21 | Hitachi Kokusai Electric Inc | Control method of program transmission system |
US8639967B2 (en) | 2009-02-20 | 2014-01-28 | Fujitsu Limited | Controlling apparatus, method for controlling apparatus and information processing apparatus |
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