KR920001287A - How to detect internal temperature of PLC - Google Patents

How to detect internal temperature of PLC Download PDF

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Publication number
KR920001287A
KR920001287A KR1019900009867A KR900009867A KR920001287A KR 920001287 A KR920001287 A KR 920001287A KR 1019900009867 A KR1019900009867 A KR 1019900009867A KR 900009867 A KR900009867 A KR 900009867A KR 920001287 A KR920001287 A KR 920001287A
Authority
KR
South Korea
Prior art keywords
programmable logic
logic controller
output
buzzer
internal temperature
Prior art date
Application number
KR1019900009867A
Other languages
Korean (ko)
Other versions
KR930006612B1 (en
Inventor
이천석
Original Assignee
백중영
금성계전 주식회사
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.)
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Publication date
Application filed by 백중영, 금성계전 주식회사 filed Critical 백중영
Priority to KR1019900009867A priority Critical patent/KR930006612B1/en
Publication of KR920001287A publication Critical patent/KR920001287A/en
Application granted granted Critical
Publication of KR930006612B1 publication Critical patent/KR930006612B1/en

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    • 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

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Programmable Controllers (AREA)
  • Control Of Temperature (AREA)

Abstract

내용 없음No content

Description

PLC의 내부 온도 감지방법How to detect internal temperature of PLC

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제2도는 본 발명 프로그램가능 로직제어기의 온도감지제어 시스템 구성도.2 is a schematic diagram of a temperature sensing control system of a programmable logic controller of the present invention.

제3도는 제2도에 대한 신호 흐름도.3 is a signal flow diagram for FIG.

Claims (1)

프로그램롬, 데이타램, 인터페이스부, 이피롬 및 마이컴으로 구성된 프로그램가능 로직제어기에 있어서, 상기 프로그램 가능로직 제어기의 내부온도를 감지하는 온도감지부(6)와, 그 온도감지부(6)의 출력전압을 반전시켜 마이컴(1)에 인가하는 슈미트트리거(7)와, 상기 마이컴(1)의 출력상태에 따라 스위칭되어 부저(9)를 제어하는 부저구동부(8)를 구비하여서, 상기 슈미트트리거(7)의 출력신호를 마이컴(1)이 체크하여 출력신호가 로우전위이면 프로그램가능 로직제어기를 정상운전시키고, 출력전위가 하이전위이면 프로그램가능 로직제어기의 출력상태를 확인하여 출력상태가 오프(Off)로 설정되어 있으면 인터페이스부(4)를 리세트시켜 전출력을 오프함과 아울러 부저(9)를 턴-온 시키고, 출력상태가 온(On)으로 설정되어 있으면 부저(9)를 턴-온 시키고 프로그램가능 로직제어기를 정상운전시키는것을 특징으로한 PLC의 내부온도 감지방법.In a programmable logic controller comprising a program ROM, a data RAM, an interface unit, an EPROM, and a microcomputer, a temperature sensing unit 6 for sensing an internal temperature of the programmable logic controller and an output of the temperature sensing unit 6 are provided. The Schmitt trigger (7) which inverts the voltage and applies it to the microcomputer (1), and the buzzer driving unit (8) for switching the buzzer (9) by switching according to the output state of the microcomputer (1), 7) Check the output signal of 7) and if the output signal is low potential, operate the programmable logic controller normally.If the output potential is high potential, check the output state of the programmable logic controller to turn the output state off. Is set to), the interface unit 4 is reset to turn off all the outputs, and the buzzer 9 is turned on. If the output state is set to on, the buzzer 9 is turned on. Let A method for sensing the internal temperature of a PLC characterized by operating a programmable logic controller normally. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019900009867A 1990-06-30 1990-06-30 Inner temperature sensing method of programmable logic controller KR930006612B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019900009867A KR930006612B1 (en) 1990-06-30 1990-06-30 Inner temperature sensing method of programmable logic controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019900009867A KR930006612B1 (en) 1990-06-30 1990-06-30 Inner temperature sensing method of programmable logic controller

Publications (2)

Publication Number Publication Date
KR920001287A true KR920001287A (en) 1992-01-30
KR930006612B1 KR930006612B1 (en) 1993-07-21

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ID=19300722

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019900009867A KR930006612B1 (en) 1990-06-30 1990-06-30 Inner temperature sensing method of programmable logic controller

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KR (1) KR930006612B1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100442477B1 (en) * 2000-07-05 2004-07-30 도시바 기카이 가부시키가이샤 Plc device having variable resolution of temperature measurement
KR100449116B1 (en) * 1996-05-07 2005-06-16 마쯔시다덴기산교 가부시키가이샤 Video signal processing apparatus

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100878244B1 (en) 2002-09-12 2009-01-13 삼성전자주식회사 circuit for generating driving voltages and liquid crystal device using the same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100449116B1 (en) * 1996-05-07 2005-06-16 마쯔시다덴기산교 가부시키가이샤 Video signal processing apparatus
KR100442477B1 (en) * 2000-07-05 2004-07-30 도시바 기카이 가부시키가이샤 Plc device having variable resolution of temperature measurement

Also Published As

Publication number Publication date
KR930006612B1 (en) 1993-07-21

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