KR920021953U - PLC program protection circuit - Google Patents

PLC program protection circuit

Info

Publication number
KR920021953U
KR920021953U KR2019910007020U KR910007020U KR920021953U KR 920021953 U KR920021953 U KR 920021953U KR 2019910007020 U KR2019910007020 U KR 2019910007020U KR 910007020 U KR910007020 U KR 910007020U KR 920021953 U KR920021953 U KR 920021953U
Authority
KR
South Korea
Prior art keywords
protection circuit
plc program
program protection
plc
circuit
Prior art date
Application number
KR2019910007020U
Other languages
Korean (ko)
Other versions
KR960008142Y1 (en
Inventor
신재권
Original Assignee
엘지전자 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 엘지전자 주식회사 filed Critical 엘지전자 주식회사
Priority to KR2019910007020U priority Critical patent/KR960008142Y1/en
Publication of KR920021953U publication Critical patent/KR920021953U/en
Application granted granted Critical
Publication of KR960008142Y1 publication Critical patent/KR960008142Y1/en

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
    • G05B19/058—Safety, monitoring
    • 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
    • G05B2219/1179—Safety, on error, fault, block, inhibit 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
    • G05B2219/13—Plc programming
    • G05B2219/13199—On error choose another program

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Storage Device Security (AREA)
KR2019910007020U 1991-05-16 1991-05-16 Safe-guard circuit for plc KR960008142Y1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR2019910007020U KR960008142Y1 (en) 1991-05-16 1991-05-16 Safe-guard circuit for plc

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR2019910007020U KR960008142Y1 (en) 1991-05-16 1991-05-16 Safe-guard circuit for plc

Publications (2)

Publication Number Publication Date
KR920021953U true KR920021953U (en) 1992-12-19
KR960008142Y1 KR960008142Y1 (en) 1996-09-24

Family

ID=19313940

Family Applications (1)

Application Number Title Priority Date Filing Date
KR2019910007020U KR960008142Y1 (en) 1991-05-16 1991-05-16 Safe-guard circuit for plc

Country Status (1)

Country Link
KR (1) KR960008142Y1 (en)

Also Published As

Publication number Publication date
KR960008142Y1 (en) 1996-09-24

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Legal Events

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A201 Request for examination
E701 Decision to grant or registration of patent right
REGI Registration of establishment
FPAY Annual fee payment

Payment date: 20050630

Year of fee payment: 10

EXPY Expiration of term