JPS5764807A - Programmable logic controller - Google Patents

Programmable logic controller

Info

Publication number
JPS5764807A
JPS5764807A JP55139571A JP13957180A JPS5764807A JP S5764807 A JPS5764807 A JP S5764807A JP 55139571 A JP55139571 A JP 55139571A JP 13957180 A JP13957180 A JP 13957180A JP S5764807 A JPS5764807 A JP S5764807A
Authority
JP
Japan
Prior art keywords
relays
program
execute
test operation
time
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
JP55139571A
Other languages
Japanese (ja)
Other versions
JPH0152762B2 (en
Inventor
Toshitada Suzuki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Omron Corp
Original Assignee
Tateisi Electronics Co
Omron Tateisi Electronics Co
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 Tateisi Electronics Co, Omron Tateisi Electronics Co filed Critical Tateisi Electronics Co
Priority to JP55139571A priority Critical patent/JPS5764807A/en
Publication of JPS5764807A publication Critical patent/JPS5764807A/en
Publication of JPH0152762B2 publication Critical patent/JPH0152762B2/ja
Granted legal-status Critical Current

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—Program-control systems
    • G05B19/02—Program-control systems electric
    • G05B19/04—Program 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
    • G05B2219/1181—Detection of I-O faults, shut down of I-O
    • 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
    • G05B2219/14—Plc safety
    • G05B2219/14074—Signature analysis, recorded states, zones are compared to actual

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Testing And Monitoring For Control Systems (AREA)

Abstract

PURPOSE:To simplify the setting of the allowance value of the on time, by deciding whether or not the on time of an output relay is within a prescribed range of the normal mode based on the result of the test operation and during an actual operation. CONSTITUTION:A mode changeover width MS is first set to the measurement side to execute a normal sequence program of a program logical controller (PLC). Then a repetitive test operation is given to a control subject, and both the maximum and minimum on times are calculated and set for all output relays X1-Xa via the operations of monitor relays X1a-Xna. A search switch SS is turned on to execute a search program after the programs are executed for all monitor relays. The numbers of faulty relays which are stored in an elastic ES are read successively to be displayed on a fault display device 8.
JP55139571A 1980-10-06 1980-10-06 Programmable logic controller Granted JPS5764807A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55139571A JPS5764807A (en) 1980-10-06 1980-10-06 Programmable logic controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55139571A JPS5764807A (en) 1980-10-06 1980-10-06 Programmable logic controller

Publications (2)

Publication Number Publication Date
JPS5764807A true JPS5764807A (en) 1982-04-20
JPH0152762B2 JPH0152762B2 (en) 1989-11-10

Family

ID=15248362

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55139571A Granted JPS5764807A (en) 1980-10-06 1980-10-06 Programmable logic controller

Country Status (1)

Country Link
JP (1) JPS5764807A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59111507A (en) * 1982-12-17 1984-06-27 Mitsubishi Electric Corp Sequence monitoring device
JPS6063611A (en) * 1983-09-16 1985-04-12 Inoue Japax Res Inc Numerically controlled electric working device
EP0487117A3 (en) * 1985-07-19 1992-10-21 Rodger T. Lovrenich A distributed logic control system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50156167A (en) * 1974-06-10 1975-12-17

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50156167A (en) * 1974-06-10 1975-12-17

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59111507A (en) * 1982-12-17 1984-06-27 Mitsubishi Electric Corp Sequence monitoring device
JPS6063611A (en) * 1983-09-16 1985-04-12 Inoue Japax Res Inc Numerically controlled electric working device
EP0487117A3 (en) * 1985-07-19 1992-10-21 Rodger T. Lovrenich A distributed logic control system

Also Published As

Publication number Publication date
JPH0152762B2 (en) 1989-11-10

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