KR960032179A - Edge calculation processing method of PLC - Google Patents

Edge calculation processing method of PLC Download PDF

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Publication number
KR960032179A
KR960032179A KR1019950003099A KR19950003099A KR960032179A KR 960032179 A KR960032179 A KR 960032179A KR 1019950003099 A KR1019950003099 A KR 1019950003099A KR 19950003099 A KR19950003099 A KR 19950003099A KR 960032179 A KR960032179 A KR 960032179A
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KR
South Korea
Prior art keywords
plc
edge
contact
previous state
storage memory
Prior art date
Application number
KR1019950003099A
Other languages
Korean (ko)
Other versions
KR0116170B1 (en
Inventor
김범수
Original Assignee
이종수
Lg 산전 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.)
Filing date
Publication date
Application filed by 이종수, Lg 산전 주식회사 filed Critical 이종수
Priority to KR95003099A priority Critical patent/KR0116170B1/en
Publication of KR960032179A publication Critical patent/KR960032179A/en
Application granted granted Critical
Publication of KR0116170B1 publication Critical patent/KR0116170B1/en

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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
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F12/00—Accessing, addressing or allocating within memory systems or architectures
    • G06F12/02—Addressing or allocation; Relocation
    • G06F12/0223—User address space allocation, e.g. contiguous or non contiguous base addressing
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F9/00—Arrangements for program control, e.g. control units
    • G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
    • G06F9/30—Arrangements for executing machine instructions, e.g. instruction decode
    • G06F9/30003—Arrangements for executing specific machine instructions
    • G06F9/30007—Arrangements for executing specific machine instructions to perform operations on data operands

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Software Systems (AREA)
  • General Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Programmable Controllers (AREA)

Abstract

본 발명의 피엘씨(PLC)의 에지(edge) 연산처리방법은, 접점상태천이 또는 연산결과의 천이상태에 따라 에지검출 연산명령을 실행하는 피엘씨에 있어서, 에지연산을 수행하기 위한 각 명령어 단계에 상기 접점 또는 연산결과의 이전상태를 보관하기 위한 이전상태 보관 메모리를 대응하도록 함으로써 에지 연산에 사용한 접점에 대해서만 이전상태 보관 메모리를 할당하는 것을 특징으로 하며, 상기와 같이 각 에지연산명령에 대해서만 각 접점의 이전상태 보관메모리를 일대일 대응시킴으로써 메모리 사용의 효율성을 높일 수 있는 효과가 있다.The edge operation processing method of the PLC of the present invention includes a step of performing an edge operation in a PLC that executes an edge detection operation instruction according to a transition state of a contact state or a calculation result. By assigning the previous state storage memory for storing the previous state of the contact or the operation result to the memory, the previous state storage memory is allocated only to the contact used for the edge operation, and for each edge operation instruction as described above. One-to-one correspondence of the previous state storage memory of a contact point has the effect of increasing the efficiency of memory usage.

Description

피엘씨(PLC)의 에지(edge) 연산처리방법Edge calculation processing method of PLC

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제4도는 본 발명에 의한 프로그램 메모리와 비트 메모리의 구성도.4 is a configuration diagram of a program memory and a bit memory according to the present invention.

Claims (1)

접점상태천이 또는 연산결과의 천이상태에 따라 에지검출 연산명령을 실행하는 피엘씨에 있어서, 에지연산을 수행하기 위한 각 명령어 단계에 상기 접점 또는 연산결과의 이전상태를 보관하기 위한 이전상태 보관 메모리를 대응하도록 함으로써 에지 연산에 사용한 접점에 대해서만 이전상태 보관 메모리를 할당하는 것을 특징으로 하는 피엘씨(PLC)의 에지(edge) 연산처리방법.In the PLC executing the edge detection operation instruction according to the transition state of the contact state or the transition of the operation result, a previous state storage memory for storing the previous state of the contact or operation result is stored in each instruction step for performing the edge operation. A method for processing an edge of a PLC, wherein the previous state storage memory is allocated only to a contact used for an edge operation. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR95003099A 1995-02-24 1995-02-24 A fire extinguishing device for forest fire KR0116170B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR95003099A KR0116170B1 (en) 1995-02-24 1995-02-24 A fire extinguishing device for forest fire

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR95003099A KR0116170B1 (en) 1995-02-24 1995-02-24 A fire extinguishing device for forest fire

Publications (2)

Publication Number Publication Date
KR960032179A true KR960032179A (en) 1996-09-17
KR0116170B1 KR0116170B1 (en) 1998-06-15

Family

ID=19408338

Family Applications (1)

Application Number Title Priority Date Filing Date
KR95003099A KR0116170B1 (en) 1995-02-24 1995-02-24 A fire extinguishing device for forest fire

Country Status (1)

Country Link
KR (1) KR0116170B1 (en)

Also Published As

Publication number Publication date
KR0116170B1 (en) 1998-06-15

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