JPS57189205A - Sequence controller - Google Patents

Sequence controller

Info

Publication number
JPS57189205A
JPS57189205A JP7390981A JP7390981A JPS57189205A JP S57189205 A JPS57189205 A JP S57189205A JP 7390981 A JP7390981 A JP 7390981A JP 7390981 A JP7390981 A JP 7390981A JP S57189205 A JPS57189205 A JP S57189205A
Authority
JP
Japan
Prior art keywords
circuit
time
state
failure
mode
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.)
Pending
Application number
JP7390981A
Other languages
Japanese (ja)
Inventor
Toru Tamano
Hiroki Daigo
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.)
KOYO DENSHI KOGYO KK
Toyota Motor Corp
Koyo Electronics Industries Co Ltd
Original Assignee
KOYO DENSHI KOGYO KK
Toyota Motor Corp
Koyo Electronics Industries Co Ltd
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 KOYO DENSHI KOGYO KK, Toyota Motor Corp, Koyo Electronics Industries Co Ltd filed Critical KOYO DENSHI KOGYO KK
Priority to JP7390981A priority Critical patent/JPS57189205A/en
Publication of JPS57189205A publication Critical patent/JPS57189205A/en
Pending 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—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
    • G05B2219/14—Plc safety
    • G05B2219/14112—Diagnostic, troubleshooting

Landscapes

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

Abstract

PURPOSE:To easily troubleshoot a failure, by storing the progress of time and state of input and output signals at the pattern storage mode, and performing a specified operation if a prescribed condition is not satisfied at the monitor mode. CONSTITUTION:When the pattern storage mode is selected with the closing operation of a switch 50a of a mode set circuit 50, a pattern storage control circuit 54 stores the state of change in the operation of an input and output system device to an operation pattern storage circuit 52. Further, the circuit 54 stores the elapsed time at each state to an advanced time storage circuit 53. Next, when the monitor mode is selected with the circuit closing operation of a switch 50b, a failure detection control circut 55 compares information written in the circuit 52 with the state of the input and output system device at the point of time at an operation pattern comparison circuit 57. The information written in the circuit 53 is compared with the progress of time at the point of time at a time comparison circuit 62. If the result of comparison is dissident, the information is stored in a failure storage circuit 68 and displayed on a failure display circuit 70.
JP7390981A 1981-05-15 1981-05-15 Sequence controller Pending JPS57189205A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7390981A JPS57189205A (en) 1981-05-15 1981-05-15 Sequence controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7390981A JPS57189205A (en) 1981-05-15 1981-05-15 Sequence controller

Publications (1)

Publication Number Publication Date
JPS57189205A true JPS57189205A (en) 1982-11-20

Family

ID=13531773

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7390981A Pending JPS57189205A (en) 1981-05-15 1981-05-15 Sequence controller

Country Status (1)

Country Link
JP (1) JPS57189205A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0176655A2 (en) * 1984-10-03 1986-04-09 Hitachi, Ltd. Programmable controller

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS553049A (en) * 1978-06-20 1980-01-10 Omron Tateisi Electronics Co Sequence controller

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS553049A (en) * 1978-06-20 1980-01-10 Omron Tateisi Electronics Co Sequence controller

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0176655A2 (en) * 1984-10-03 1986-04-09 Hitachi, Ltd. Programmable controller

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