JPS5482946A - Duplex system of sequence controller - Google Patents
Duplex system of sequence controllerInfo
- Publication number
- JPS5482946A JPS5482946A JP14989377A JP14989377A JPS5482946A JP S5482946 A JPS5482946 A JP S5482946A JP 14989377 A JP14989377 A JP 14989377A JP 14989377 A JP14989377 A JP 14989377A JP S5482946 A JPS5482946 A JP S5482946A
- Authority
- JP
- Japan
- Prior art keywords
- sets
- unit
- signal
- circuit
- failure
- 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 enable sure control for the plant, by using two sets of sequence controllers coupled with the computer and keeping one set operation if either of them is in failure, through the operation of two sets of AND at normal operation and OR operation at failure.
CONSTITUTION: When two sets of sequence controllers SC2 are both normal, each is inputted via the input unit 10 for the signal 13 and the result processed in accordance with the program of the memory unit 8 is made with the output unit 11. As a result of processing, if the load is operated, the operation signal is outputted to the external bypass circuit 12, which outputs operation instruction with AND of the output of two sets of SC2. If the result is stop, stop instruction is made with OR of the output of two sets of SC2 at the circuit 12 with the signal from the unit 11. If one of SC2 is in failure, or data delivery is made with the computer 1, the circuit 12 makes the circuit operating or stopping with other SC2 by means of the signal from the process input and output unit 6 in the unit 11 in SC2 or in the computer 1.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14989377A JPS5482946A (en) | 1977-12-15 | 1977-12-15 | Duplex system of sequence controller |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14989377A JPS5482946A (en) | 1977-12-15 | 1977-12-15 | Duplex system of sequence controller |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5482946A true JPS5482946A (en) | 1979-07-02 |
Family
ID=15484919
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14989377A Pending JPS5482946A (en) | 1977-12-15 | 1977-12-15 | Duplex system of sequence controller |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5482946A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56134694A (en) * | 1980-03-26 | 1981-10-21 | Stanley Electric Co Ltd | Control system for safety operation of machine tool like as press and the like |
JPS5966704A (en) * | 1982-10-08 | 1984-04-16 | Aida Eng Ltd | Program control for press or the like |
-
1977
- 1977-12-15 JP JP14989377A patent/JPS5482946A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56134694A (en) * | 1980-03-26 | 1981-10-21 | Stanley Electric Co Ltd | Control system for safety operation of machine tool like as press and the like |
JPH059680B2 (en) * | 1980-03-26 | 1993-02-05 | Sutanree Denki Kk | |
JPS5966704A (en) * | 1982-10-08 | 1984-04-16 | Aida Eng Ltd | Program control for press or the like |
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