JPS5759207A - Monitoring system of sequence controller - Google Patents

Monitoring system of sequence controller

Info

Publication number
JPS5759207A
JPS5759207A JP55134353A JP13435380A JPS5759207A JP S5759207 A JPS5759207 A JP S5759207A JP 55134353 A JP55134353 A JP 55134353A JP 13435380 A JP13435380 A JP 13435380A JP S5759207 A JPS5759207 A JP S5759207A
Authority
JP
Japan
Prior art keywords
time
contents
shift register
monitoring system
sequence controller
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
JP55134353A
Other languages
Japanese (ja)
Inventor
Mitsuo Takakura
Tomokatsu Sato
Hiromasa Yamaoka
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP55134353A priority Critical patent/JPS5759207A/en
Publication of JPS5759207A publication Critical patent/JPS5759207A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/28—Error detection; Error correction; Monitoring by checking the correct order of processing
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/30—Monitoring
    • G06F11/32—Monitoring with visual or acoustical indication of the functioning of the machine
    • 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

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Testing And Monitoring For Control Systems (AREA)

Abstract

PURPOSE:To display logical operation results at the point in time of monitoring with fidelity, by storing the contents of a bit accumulator in a shift register at every time when arithmetic is performed. CONSTITUTION:The output of a process input equipment 4 is processed by an arithmetic circuit 6 and the result is outputted to a process output equipment 8. Every time when the contents of a bit accumulator 7 are processed, the result is stored in a shift register 10. Once a monitoring command is accepted gy interruption, the contents of the shift register 10 at the specified point in time are displayed on a display device 9.
JP55134353A 1980-09-29 1980-09-29 Monitoring system of sequence controller Pending JPS5759207A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55134353A JPS5759207A (en) 1980-09-29 1980-09-29 Monitoring system of sequence controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55134353A JPS5759207A (en) 1980-09-29 1980-09-29 Monitoring system of sequence controller

Publications (1)

Publication Number Publication Date
JPS5759207A true JPS5759207A (en) 1982-04-09

Family

ID=15126375

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55134353A Pending JPS5759207A (en) 1980-09-29 1980-09-29 Monitoring system of sequence controller

Country Status (1)

Country Link
JP (1) JPS5759207A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4668004A (en) * 1983-08-18 1987-05-26 Nissan Motor Co., Ltd. Instrument panel construction

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4668004A (en) * 1983-08-18 1987-05-26 Nissan Motor Co., Ltd. Instrument panel construction

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