JPS57143605A - Sequence controller - Google Patents

Sequence controller

Info

Publication number
JPS57143605A
JPS57143605A JP2891081A JP2891081A JPS57143605A JP S57143605 A JPS57143605 A JP S57143605A JP 2891081 A JP2891081 A JP 2891081A JP 2891081 A JP2891081 A JP 2891081A JP S57143605 A JPS57143605 A JP S57143605A
Authority
JP
Japan
Prior art keywords
elements
program
arithmetic
circuit
specified
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
JP2891081A
Other languages
Japanese (ja)
Inventor
Toshihiko Yomogida
Yasuo Suzuki
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.)
Toyoda Koki KK
Original Assignee
Toyoda Koki KK
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 Toyoda Koki KK filed Critical Toyoda Koki KK
Priority to JP2891081A priority Critical patent/JPS57143605A/en
Publication of JPS57143605A publication Critical patent/JPS57143605A/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
    • G05B2219/14—Plc safety
    • G05B2219/14086—Watch dog

Abstract

PURPOSE:To obtain an easily programmed sequence controller of simple structure by judging whether the operation condition output signal of an input element meets control requirements, and controlling whether a specified output element is energized or not according to the judgement result. CONSTITUTION:On the basis of the operation condition signal of an input element specified by a program and arithmetic results stored in arithmetic result storage elements 30-33, an arithmetic circuit 24 performs logical operation specified by the program to write arithmetic results in the elements 30-33. When the program of a conditional statement YON or TON is read out of a storage device 20, an output gate circuit 70 sends a control signal to an output element 5 according to the arithmetic results stored in the elements 30-34. Further, the statement program YON is read out of the elements 30-33, a resetting circuit 65 initializes the elements 30-33 after the control signal is outputted from the circuit 70.
JP2891081A 1981-02-27 1981-02-27 Sequence controller Pending JPS57143605A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2891081A JPS57143605A (en) 1981-02-27 1981-02-27 Sequence controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2891081A JPS57143605A (en) 1981-02-27 1981-02-27 Sequence controller

Publications (1)

Publication Number Publication Date
JPS57143605A true JPS57143605A (en) 1982-09-04

Family

ID=12261552

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2891081A Pending JPS57143605A (en) 1981-02-27 1981-02-27 Sequence controller

Country Status (1)

Country Link
JP (1) JPS57143605A (en)

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