JPS55127602A - Backing-up method of controller of process conrol system - Google Patents
Backing-up method of controller of process conrol systemInfo
- Publication number
- JPS55127602A JPS55127602A JP3432779A JP3432779A JPS55127602A JP S55127602 A JPS55127602 A JP S55127602A JP 3432779 A JP3432779 A JP 3432779A JP 3432779 A JP3432779 A JP 3432779A JP S55127602 A JPS55127602 A JP S55127602A
- Authority
- JP
- Japan
- Prior art keywords
- computer
- controller
- equipment
- signal
- control
- 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 make it possible to exercise continuous process control meeting rquirements, by supplying needed control signals to a process equipment when the abnormality of the process equipment and an external condition signal is detected.
CONSTITUTION: Between computer 2 and controller 3 controlling process equipment 4 by being linked to computer 2, a start command from a higher rank computer to lower rank computer 2, transmitted to controller 3 via transmission line 6, and supplied from controller 3 to equipment 2 as control signal 10. If controller 3 would become abnormal after the outputting of the start command, computer 2 receives state signal 12 to check external condition signal 11 and when signal 11 and equipment 4 are both abnormal, needed control signal 13 is outputted to equipment 4, which is brought under control. Consequently, decentralized unit 3 is backed up by computer 2 linked to unit 3, so taht process control meeting requirements can continuously be exercised.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3432779A JPS55127602A (en) | 1979-03-26 | 1979-03-26 | Backing-up method of controller of process conrol system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3432779A JPS55127602A (en) | 1979-03-26 | 1979-03-26 | Backing-up method of controller of process conrol system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55127602A true JPS55127602A (en) | 1980-10-02 |
Family
ID=12411051
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3432779A Pending JPS55127602A (en) | 1979-03-26 | 1979-03-26 | Backing-up method of controller of process conrol system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55127602A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6043704A (en) * | 1983-08-22 | 1985-03-08 | Hitachi Ltd | Plant controller |
-
1979
- 1979-03-26 JP JP3432779A patent/JPS55127602A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6043704A (en) * | 1983-08-22 | 1985-03-08 | Hitachi Ltd | Plant controller |
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