JPS56121105A - Sequence controller - Google Patents

Sequence controller

Info

Publication number
JPS56121105A
JPS56121105A JP2480180A JP2480180A JPS56121105A JP S56121105 A JPS56121105 A JP S56121105A JP 2480180 A JP2480180 A JP 2480180A JP 2480180 A JP2480180 A JP 2480180A JP S56121105 A JPS56121105 A JP S56121105A
Authority
JP
Japan
Prior art keywords
interruption
external device
circuit
signal
zero
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
JP2480180A
Other languages
Japanese (ja)
Inventor
Yoshitane Saito
Akihiro Yamada
Satoshi Yano
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.)
Omron Corp
Original Assignee
Omron Tateisi Electronics Co
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 Omron Tateisi Electronics Co filed Critical Omron Tateisi Electronics Co
Priority to JP2480180A priority Critical patent/JPS56121105A/en
Publication of JPS56121105A publication Critical patent/JPS56121105A/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
    • G05B19/054—Input/output
    • 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
    • G05B2219/11—Plc I-O input output
    • G05B2219/1168—Peak amplitude for input, nul amplitude for activating output

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)

Abstract

PURPOSE:To simplify the circuit of a sequence controller by permitting a central processor to execute an output instruction in response to the zero-cross timing of a commercial power source. CONSTITUTION:According to a program in program storing device 4, CPU1 performs arithmetic that corresponds to the state of an external device obtained via input device 2, and then transfers the result to the external device via output device 3. The zero-cross point of the commercial power source is detected and on the basis of the detection signal, an interruption signal is generated by interruption generator 7 to permit CPU to make an interruption. In response to the interruption signal, CPU1 executes output instruction successively to send a pulse signal to output device 3, triggering Triacs 35-38. Thus, a latch circuit, etc., for the temporary storage of the state of the external device is unnecessary and the circuit can be simplified.
JP2480180A 1980-02-28 1980-02-28 Sequence controller Pending JPS56121105A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2480180A JPS56121105A (en) 1980-02-28 1980-02-28 Sequence controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2480180A JPS56121105A (en) 1980-02-28 1980-02-28 Sequence controller

Publications (1)

Publication Number Publication Date
JPS56121105A true JPS56121105A (en) 1981-09-22

Family

ID=12148292

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2480180A Pending JPS56121105A (en) 1980-02-28 1980-02-28 Sequence controller

Country Status (1)

Country Link
JP (1) JPS56121105A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53122079A (en) * 1977-03-31 1978-10-25 Sharp Corp Output controlling system for sequential controller

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53122079A (en) * 1977-03-31 1978-10-25 Sharp Corp Output controlling system for sequential controller

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