KR970066873A - Piel's (PLC) Actual Output Signal Sensing Device and Method - Google Patents

Piel's (PLC) Actual Output Signal Sensing Device and Method Download PDF

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Publication number
KR970066873A
KR970066873A KR1019960008388A KR19960008388A KR970066873A KR 970066873 A KR970066873 A KR 970066873A KR 1019960008388 A KR1019960008388 A KR 1019960008388A KR 19960008388 A KR19960008388 A KR 19960008388A KR 970066873 A KR970066873 A KR 970066873A
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KR
South Korea
Prior art keywords
output
unit
data memory
photocoupler
contact state
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KR1019960008388A
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Korean (ko)
Inventor
정진영
Original Assignee
이종수
Lg 산전주식회사
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Priority to KR1019960008388A priority Critical patent/KR970066873A/en
Publication of KR970066873A publication Critical patent/KR970066873A/en

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Abstract

본 발명은 피엘씨(PLC: Plogram Logic Controller)의 실제 출력신호 감지장치 및 방법에 관한 것으로, 특히 컴퓨터를 이용한 운전상태의 모니터링시 외부 노이즈등의 영향에 의한 출력접점의 오동작 상태를 감지하도록 한 피엘씨(PLC)의 실제 출력신호 감지장치 및 방법에 관한 것이다. 따라서, 본 발명은 릴레이의 접점상태를 제어부와 신호구동부를 통한 데이타 메모리의 접점상태와 비교함으로써 실제 출력신호의 오동작 상태를 감지할 수 있고, 이 결과에 따라 모니터링시 오동작이 발생될때 제어부에서 실제 출력접점 상태를 읽어들여 모니터링을 할 수 있는 효과가 있다.The present invention relates to an apparatus and method for detecting an actual output signal of a PLC (Pluggable Logic Controller). More particularly, the present invention relates to an apparatus and method for detecting a malfunction of an output contact due to external noise, The present invention relates to an apparatus and method for sensing an actual output signal of a PLC. Therefore, according to the present invention, it is possible to detect a malfunction state of an actual output signal by comparing the contact state of the relay with the contact state of the data memory through the control unit and the signal driving unit. When a malfunction occurs in monitoring according to the result, The contact state can be read and monitored.

Description

피엘씨(PLC)의 실제 출력신호 감지장치 및 방법Piel's (PLC) Actual Output Signal Sensing Device and Method

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is a trivial issue, I did not include the contents of the text.

제3도는 본 발명 피엘씨(PLC)의 실제 출력신호 감지장치의 블록도, 제4도는 제3도에 대한 신호흐름도.FIG. 3 is a block diagram of an actual output signal sensing device of the present invention PLC, and FIG. 4 is a signal flow diagram for FIG.

Claims (4)

출력신호를 제어하는 제어부와, 상기 제어부의 출력신호를 입력받아 증폭하는 신호구동부와, 상기 신호구동부의 증폭된 신호를 입력받아 전달하는 포토커플러부(P/C X1-X8)와, 상기 포토커플러부를 통해 출력신호를 입력받아 디바이스를 구동시키는 릴레이부와, 상기 릴레이부의 접점(SW1-SW8) 상태를 피드백시켜 전달하는 포토커플러부(P/C Q1-Q8)와, 상기 포토커플러(P/C X1-X8)의 데이타 메모리의 출력접점 상태의 데이타(X1-X8)와 상기포토커플러부(P/C Q1-Q8)의 실제 출력접점 상태의 피드백 데이타(Q1-Q8)를 비교하여 오동작을 판별하는 논리게이트부로 구성하여 된것을 특징으로 하는 피엘씨(PLC)의 실제 출력신호 감지장치.A photocoupler unit (P / C X1-X8) for receiving and transmitting the amplified signal of the signal driver, and a photo coupler unit A photocoupler unit (P / C Q1-Q8) for feeding back the state of the contacts SW1-SW8 of the relay unit and delivering the output signal to the photocoupler (X1-X8) of the output contact state of the data memory of the photocoupler unit (P / C1-X8) and the feedback data (Q1-Q8) of the actual output contact state of the photocoupler unit And a logic gate unit for outputting the output signal of the PLC. 제1항에 있어서, 포토커플러(P/C Q1-Q8)는 다이오드가 양방향으로 구성하여 된 것을 특징으로 하는 피엘씨(PLC)의 실제 출력신호 감지장치.2. The actual output signal sensing device of claim 1, wherein the photocoupler (P / C Q1-Q8) has diodes arranged in both directions. 제1항에 있어서, 논리 게이트부는 데이타 메모리의 접점상태의 데이타가 일측에 입력되고, 실제 출력접점 상태의 피드백 데이타가 타측에 입력될때 익스크로시브 오아링(XOR)되고, 상기 익스크로tlqm 오아링(XOR)의 두개의 출력신호가 입력될때 오아링(OR)시켜 출력되도록 구성하여 된 것을 특징으로 하는 피엘씨(PLC)의 실제 출력신호 감지장치.The logic gate unit according to claim 1, wherein the logic gate unit is exclusively subjected to an exclusive OR operation when the data of the contact state of the data memory is input to one side and the feedback data of the actual output contact state is input to the other side, (OR) when the two output signals of the XOR are input to the output signal of the PLC. 입력부 접점상태를 동시에 읽어들여 데이타 메모리부에 저장하고, 시퀀스 프로그램을 실행하여 그 실행결과에 따른 출력접점의 상태변화를 데이타 메모리에 저장하며, 프로그램이 종료되면 데이타 메모리의 출력부 상태를 제어부와 신호 구동부 및 포토커플러를 통해 출력 릴레이(RY)를 동작시키는 단계와, 상기 출력 릴레이(RY1-RY8)의 접점상태(SW1-SW8)를 포토커플러를 통해 피드백 받아 논리 게이트부에서 피드백 데이타(Q1-Q8)와 데이타 메모리의 접점상태 데이타(X1-X8)를 비교하여 오동작이 발생되면 상기 데이타 메모리의 출력부 상태를 동시에 출력하고, 오동작이 발생되지 않으면 복귀하여 처음부터 다시 수행하는 단계와, 모니터링시 오동작이 발생되지 않으면 데이타 메모리의 접점상태를 읽어들여 모니터링 표시기에 출력하고, 상기 모니터링시 오동작이 발생되면 피드백 신호를 상기 제어부에서 읽어들여 상기 모니터링 표시기에 출력하는 단계로 이루어진 것을 특징으로 하는 피엘씨(PLC)의 실제 출력신호 감지방법.The state of the input contact point is read at the same time and stored in the data memory unit, the sequence program is executed, and the state change of the output contact point according to the execution result is stored in the data memory. The method comprising: operating the output relay (RY) through a driver and a photocoupler; receiving feedback signals (SW1 to SW8) of the output relays (RY1 to RY8) Comparing the contact state data X1-X8 of the data memory with the contact state data X1-X8 of the data memory to output the output state of the data memory at the same time if a malfunction occurs; returning from the beginning if the malfunction does not occur, The contact state of the data memory is read and output to the monitoring indicator, When the read operation is generated in a feedback signal to the control method detects the actual output signal of the PLL's (PLC), characterized in that comprising a step of outputting to the monitor indicator. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: It is disclosed by the contents of the first application.
KR1019960008388A 1996-03-26 1996-03-26 Piel's (PLC) Actual Output Signal Sensing Device and Method KR970066873A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100459208B1 (en) * 1998-02-26 2005-01-31 엘지산전 주식회사 Relay operation feedback circuit of digital output board having improved reliability

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100459208B1 (en) * 1998-02-26 2005-01-31 엘지산전 주식회사 Relay operation feedback circuit of digital output board having improved reliability

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