JPS5482946A - Duplex system of sequence controller - Google Patents

Duplex system of sequence controller

Info

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
Application number
JP14989377A
Other languages
Japanese (ja)
Inventor
Tadao Yamagishi
Matsuo Saito
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP14989377A priority Critical patent/JPS5482946A/en
Publication of JPS5482946A publication Critical patent/JPS5482946A/en
Pending legal-status Critical Current

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
JP14989377A 1977-12-15 1977-12-15 Duplex system of sequence controller Pending JPS5482946A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (3)

* Cited by examiner, † Cited by third party
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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