KR970022754A - PLC's output unit fault diagnosis circuit - Google Patents

PLC's output unit fault diagnosis circuit Download PDF

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Publication number
KR970022754A
KR970022754A KR1019950036198A KR19950036198A KR970022754A KR 970022754 A KR970022754 A KR 970022754A KR 1019950036198 A KR1019950036198 A KR 1019950036198A KR 19950036198 A KR19950036198 A KR 19950036198A KR 970022754 A KR970022754 A KR 970022754A
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KR
South Korea
Prior art keywords
sequence data
output unit
output
microprocessor
plc
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Application number
KR1019950036198A
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Korean (ko)
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KR0166771B1 (en
Inventor
이시영
Original Assignee
이종수
Lg 산전 주식회사
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Application filed by 이종수, Lg 산전 주식회사 filed Critical 이종수
Priority to KR1019950036198A priority Critical patent/KR0166771B1/en
Publication of KR970022754A publication Critical patent/KR970022754A/en
Application granted granted Critical
Publication of KR0166771B1 publication Critical patent/KR0166771B1/en

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/22—Detection or location of defective computer hardware by testing during standby operation or during idle time, e.g. start-up testing
    • G06F11/2205—Detection or location of defective computer hardware by testing during standby operation or during idle time, e.g. start-up testing using arrangements specific to the hardware being tested
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/22—Detection or location of defective computer hardware by testing during standby operation or during idle time, e.g. start-up testing
    • G06F11/2273—Test methods

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Programmable Controllers (AREA)

Abstract

본 발명은 PLC회로에 관한 것으로, 특히 출력 유닛(Unit)의 고장시 이상부위를 신속하게 경보하여 시스템의 정시시간을 단축함으로 자동화의 가동율을 향상시키도록 한 PLC의 출력 유닛 고장진단회로에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a PLC circuit, and more particularly, to an output diagnosis circuit of a PLC which improves the operation rate of automation by quickly alarming an abnormal part in the event of a failure of the output unit and shortening the system time. .

상기와 같은 목적을 달성하기 위한 본 발명의 PCL의 출력 유닛 고장진단회로는 출력 유닛의 릴레이 스위칭으로부터 시퀸스 데이타를 복원하고 절연하여 궤환하는 시퀸스 데이타 궤환수단과, 상기 궤환된 시퀸스 데이타를 받아 메모리램에 저장된 데이타와 상기 카운터의 카운트값을 리드하고, 이들을 비교, 판단하여 상기 출력 유닛을 정지시키면서 리페어신호를 출력하는 μ-프로세서와, 상기 μ-프로세서의 리페어신호에 의해 경보기를 동작시키는 경보수단으로 이루어짐을 특징으로 한다.The output unit fault diagnosis circuit of the PCL of the present invention for achieving the above object is a sequence data feedback means for restoring, insulating and returning sequence data from relay switching of an output unit, and receiving the returned sequence data into a memory RAM. It consists of a microprocessor that reads the stored data and the count value of the counter, compares and judges them, and outputs a repair signal while stopping the output unit, and an alarm means for operating an alarm by the repair signal of the microprocessor. It is characterized by.

Description

피엘씨(PLC)의 출력 유닛 고장진단회로PLC's output unit fault diagnosis circuit

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

제2도는 본 발명에 PLC의 출력 유닛 고장진단회로에 대한 구성블록도.2 is a configuration block diagram of an output unit fault diagnosis circuit of a PLC according to the present invention.

제3도는 본 발명의 PLC의 출력 유닛 고장진단회로에 대한 동작을 나타낸 플로우챠트.3 is a flowchart showing the operation of the output unit fault diagnosis circuit of the PLC of the present invention.

Claims (3)

출력 유닛의 릴레이 스위칭으로부터 시퀸스 데이타를 복원하고 절연하여 궤환하는 시퀸스 데이타 궤환수단과, 상기 궤환된 시퀸스 데이타를 받아 메모리램에 저장된 데이타와 상기 카운터의 카운트값을 리드하고, 이들을 비교, 판단하여 상기 출력유닛을 정지시키면서 리페어신호를 출력하는 μ-프로세서와, 상기 μ-프로세서의 리페어신호에 의해 경보기를 동작시키는 경보수단으로 이루어짐을 특징으로 하는 PLC의 출력 유닛 고장 진단회로.A sequence data feedback means for restoring, insulating, and returning sequence data from relay switching of an output unit, receiving the returned sequence data, reading data stored in a memory RAM, and count values of the counter, comparing and determining them, and outputting the output And a microprocessor for outputting a repair signal while the unit is stopped, and an alarm unit for operating an alarm by the repair signal of the microprocessor. 제1항에 있어서, 상기 시퀸스 데이타 궤환수단은 상기 릴레이의 스위칭으로부터 시퀸스 데이타를 복원하는 CR모듈과, 상기 CR모듈의 출력을 전달하면서 절연으로 칩소자들을 보호하는 포토커플러와, 상기 포토커플러의 전류를 상기 μ-프로세서에 맞게 낮추는 전류제한부와, 상기 전류제한부의 출력을 버퍼링하는 제3버퍼와, 상기 제3버퍼의 출력을 상기 μ-프로세서 포맷으로 인터페이싱하는 게이트어레이와, 상기 게이트 어레이의 출력을 다시 버퍼링하는 제1버퍼링으로 이루어짐을 특징으로 하는 PLC의 출력 유닛 고장 진단회로.The method of claim 1, wherein the sequence data feedback means comprises: a CR module for restoring sequence data from switching of the relay, a photocoupler for protecting chip elements with insulation while transferring an output of the CR module, and a current of the photocoupler. A current limiter for lowering the? -Processor for the? -Processor, a third buffer for buffering the output of the current limiter, a gate array for interfacing the output of the third buffer to the? -Processor format, and an output of the gate array; The output unit fault diagnosis circuit of the PLC, characterized in that the first buffering for buffering again. 제1항에 있어서, μ-프로세서에서 카운터의 카운트값은 상기 μ-프로세서의 원 시퀸스 데이타가 “하이에서 로우”로 또는 “로우에서 하이”로 반전될 때 한 카운트씩 증가시킴을 특징으로 하는 PLC의 출력 유닛 고장 진단회로.The PLC of claim 1, wherein the count value of the counter in the microprocessor increases by one count when the one-sequence data of the microprocessor is inverted from "high to low" or "low to high". Output unit fault diagnosis circuit. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950036198A 1995-10-19 1995-10-19 A fault detecting circuit of plc output unit and its method KR0166771B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019950036198A KR0166771B1 (en) 1995-10-19 1995-10-19 A fault detecting circuit of plc output unit and its method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019950036198A KR0166771B1 (en) 1995-10-19 1995-10-19 A fault detecting circuit of plc output unit and its method

Publications (2)

Publication Number Publication Date
KR970022754A true KR970022754A (en) 1997-05-30
KR0166771B1 KR0166771B1 (en) 1999-01-15

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100986004B1 (en) * 2008-11-10 2010-10-06 엘에스산전 주식회사 Intelligent input/output module in plc system

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101273824B1 (en) * 2009-03-10 2013-06-11 엘에스산전 주식회사 Event processing module and plc system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100986004B1 (en) * 2008-11-10 2010-10-06 엘에스산전 주식회사 Intelligent input/output module in plc system

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KR0166771B1 (en) 1999-01-15

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