JPS57189203A - Sequence controller - Google Patents

Sequence controller

Info

Publication number
JPS57189203A
JPS57189203A JP7225081A JP7225081A JPS57189203A JP S57189203 A JPS57189203 A JP S57189203A JP 7225081 A JP7225081 A JP 7225081A JP 7225081 A JP7225081 A JP 7225081A JP S57189203 A JPS57189203 A JP S57189203A
Authority
JP
Japan
Prior art keywords
output
circuit
lock
closed
contact
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
JP7225081A
Other languages
Japanese (ja)
Inventor
Makoto Adachi
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 JP7225081A priority Critical patent/JPS57189203A/en
Publication of JPS57189203A publication Critical patent/JPS57189203A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
    • G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
    • G05B19/058—Safety, monitoring
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00—Program-control systems
    • G05B2219/10—Plc systems
    • G05B2219/13—Plc programming
    • G05B2219/13016—Jump while output is disabled, or disabling output when running test instruction

Abstract

PURPOSE:To surely prevent a misoutput to an unexpected device at failures, by providing an output lock circuit which compulsively turns off an output register independently of an output-off command from a sequence controller operation section. CONSTITUTION:If a sequence controller 1 or a circuit other than the controller 1 is at fault, a contact 25 or 26 of an output lock signal generating circuit 23 is closed. If the operator judges the stop of sequence control, a switch 27 is closed. Then a relay 28 is activated and a holding circuit is formed through a contact 28a1. At the same time, a contact 28a2 is closed and an output lock signal is outputted to an output lock line 20 from a signal separation circuit 22. Since the line 20 is connected to each bit of each output register 15 of an output section 5, each bit is compulsively reset with an output lock signal to lock the output to a control device 9.
JP7225081A 1981-05-15 1981-05-15 Sequence controller Pending JPS57189203A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7225081A JPS57189203A (en) 1981-05-15 1981-05-15 Sequence controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7225081A JPS57189203A (en) 1981-05-15 1981-05-15 Sequence controller

Publications (1)

Publication Number Publication Date
JPS57189203A true JPS57189203A (en) 1982-11-20

Family

ID=13483856

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7225081A Pending JPS57189203A (en) 1981-05-15 1981-05-15 Sequence controller

Country Status (1)

Country Link
JP (1) JPS57189203A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01175304U (en) * 1988-05-31 1989-12-13

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51395B1 (en) * 1970-04-10 1976-01-07

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51395B1 (en) * 1970-04-10 1976-01-07

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01175304U (en) * 1988-05-31 1989-12-13

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