JPS5614302A - Process control system - Google Patents
Process control systemInfo
- Publication number
- JPS5614302A JPS5614302A JP8820579A JP8820579A JPS5614302A JP S5614302 A JPS5614302 A JP S5614302A JP 8820579 A JP8820579 A JP 8820579A JP 8820579 A JP8820579 A JP 8820579A JP S5614302 A JPS5614302 A JP S5614302A
- Authority
- JP
- Japan
- Prior art keywords
- subsystem
- auxiliary
- control part
- faulty
- aux
- 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 back up the system with one auxiliary subsystem, by transferring the control program of a faulty subsystem to the auxiliary subsystem in case of fault of the subsystem in the process control system having plural subsystem.
CONSTITUTION: When control part 34 of subsystem 4 becomes faulty, control part 34 sends the contact signal to loop control part 24, control part 35 os auxiliary system Aux, and process input/output unit 16. Loop control part 24 disconnects subsystem 4 from series loop 10. Control part 35 causes loop control part 25 to connect series loop 10 and auxiliary system Aux and sends OS of memory 44 of faulty subsystem 4 to memory 45 of auxiliary system Aux through memory bus 17. Process I/0 unit 16 switches the driving part from driving part 16a for normalcy to auxiliary driving part 16b. As a result, auxiliary subsystem Aux operates in stead of faulty subsystem 4.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8820579A JPS5614302A (en) | 1979-07-13 | 1979-07-13 | Process control system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8820579A JPS5614302A (en) | 1979-07-13 | 1979-07-13 | Process control system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5614302A true JPS5614302A (en) | 1981-02-12 |
Family
ID=13936392
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8820579A Pending JPS5614302A (en) | 1979-07-13 | 1979-07-13 | Process control system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5614302A (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57161901A (en) * | 1981-03-31 | 1982-10-05 | Hitachi Ltd | Plant control device |
JPS57174701A (en) * | 1981-04-20 | 1982-10-27 | Hitachi Ltd | Decentralized controlling system |
JPS5868104A (en) * | 1981-10-16 | 1983-04-22 | Yokogawa Hokushin Electric Corp | Redundant decentralized controller |
JPS5868103A (en) * | 1981-10-17 | 1983-04-22 | Yokogawa Hokushin Electric Corp | Redundant decentralized controller |
JPS5868102A (en) * | 1981-10-17 | 1983-04-22 | Yokogawa Hokushin Electric Corp | Redundant decentralized controller |
JPS5884307A (en) * | 1981-11-16 | 1983-05-20 | Toshiba Mach Co Ltd | Programmable sequence controller |
JPS5887323A (en) * | 1981-11-16 | 1983-05-25 | Teijin Ltd | Preparation of heat-resistant spun yarn |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5478945A (en) * | 1977-12-06 | 1979-06-23 | Toshiba Corp | Process control computer system |
-
1979
- 1979-07-13 JP JP8820579A patent/JPS5614302A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5478945A (en) * | 1977-12-06 | 1979-06-23 | Toshiba Corp | Process control computer system |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57161901A (en) * | 1981-03-31 | 1982-10-05 | Hitachi Ltd | Plant control device |
JPS57174701A (en) * | 1981-04-20 | 1982-10-27 | Hitachi Ltd | Decentralized controlling system |
JPS6361681B2 (en) * | 1981-04-20 | 1988-11-30 | ||
JPS5868104A (en) * | 1981-10-16 | 1983-04-22 | Yokogawa Hokushin Electric Corp | Redundant decentralized controller |
JPS5868103A (en) * | 1981-10-17 | 1983-04-22 | Yokogawa Hokushin Electric Corp | Redundant decentralized controller |
JPS5868102A (en) * | 1981-10-17 | 1983-04-22 | Yokogawa Hokushin Electric Corp | Redundant decentralized controller |
JPS5884307A (en) * | 1981-11-16 | 1983-05-20 | Toshiba Mach Co Ltd | Programmable sequence controller |
JPS5887323A (en) * | 1981-11-16 | 1983-05-25 | Teijin Ltd | Preparation of heat-resistant spun yarn |
JPS6317126B2 (en) * | 1981-11-16 | 1988-04-12 | Teijin Ltd | |
JPH0157802B2 (en) * | 1981-11-16 | 1989-12-07 | Toshiba Machine Co Ltd |
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