JPS57172410A - State processor for sequence controller - Google Patents

State processor for sequence controller

Info

Publication number
JPS57172410A
JPS57172410A JP56058164A JP5816481A JPS57172410A JP S57172410 A JPS57172410 A JP S57172410A JP 56058164 A JP56058164 A JP 56058164A JP 5816481 A JP5816481 A JP 5816481A JP S57172410 A JPS57172410 A JP S57172410A
Authority
JP
Japan
Prior art keywords
memory
microprocessor
voltage drop
results
sequence
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
JP56058164A
Other languages
Japanese (ja)
Other versions
JPS6250841B2 (en
Inventor
Masao Aoki
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP56058164A priority Critical patent/JPS57172410A/en
Publication of JPS57172410A publication Critical patent/JPS57172410A/en
Publication of JPS6250841B2 publication Critical patent/JPS6250841B2/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—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
    • G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
    • G05B19/0428—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
    • 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
    • G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
    • G05B19/0426—Programming the control sequence

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Programmable Controllers (AREA)
  • For Increasing The Reliability Of Semiconductor Memories (AREA)
  • Testing And Monitoring For Control Systems (AREA)
  • Power Sources (AREA)
  • Techniques For Improving Reliability Of Storages (AREA)

Abstract

PURPOSE:To stop sequence arithmetic while causing interruption shortly after parity generation, by outputting the result of a self-diagnosis of a memory through an auxiliary relay. CONSTITUTION:A Microprocessor 1 performs processing such as external input and output control to store a processing program in a memory 2. A voltage drop across a battery 5 is detected by a battery voltage drop detecting circuit 6, and the occurrence of an erroneous read of a sequence program, namely, parity generation is detected by a memory parity generating circuit 8. This detection result is outputted to a data bus 7 under the command of the microprocessor 1 at a break in sequence arithmetic. This detection result and pieces of information on whether the battery voltage drop and pariry generation occur are inputted to the microprocessor 1 and processed, and results are stored in a memory 9 for an auxilary relay. The stored results are outputted as self-diagnostic results through sequence arithmetic processing.
JP56058164A 1981-04-17 1981-04-17 State processor for sequence controller Granted JPS57172410A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56058164A JPS57172410A (en) 1981-04-17 1981-04-17 State processor for sequence controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56058164A JPS57172410A (en) 1981-04-17 1981-04-17 State processor for sequence controller

Publications (2)

Publication Number Publication Date
JPS57172410A true JPS57172410A (en) 1982-10-23
JPS6250841B2 JPS6250841B2 (en) 1987-10-27

Family

ID=13076347

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56058164A Granted JPS57172410A (en) 1981-04-17 1981-04-17 State processor for sequence controller

Country Status (1)

Country Link
JP (1) JPS57172410A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61190607A (en) * 1985-02-18 1986-08-25 Toyoda Mach Works Ltd Numerically controlled machine tool provided with abnormality stop function
JPH0420147U (en) * 1989-10-23 1992-02-20

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61190607A (en) * 1985-02-18 1986-08-25 Toyoda Mach Works Ltd Numerically controlled machine tool provided with abnormality stop function
JPH0554128B2 (en) * 1985-02-18 1993-08-11 Toyoda Machine Works Ltd
JPH0420147U (en) * 1989-10-23 1992-02-20

Also Published As

Publication number Publication date
JPS6250841B2 (en) 1987-10-27

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