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JPS5619459A - Fault diagnostic unit for electric circuit - Google Patents

Fault diagnostic unit for electric circuit

Info

Publication number
JPS5619459A
JPS5619459A JP9659379A JP9659379A JPS5619459A JP S5619459 A JPS5619459 A JP S5619459A JP 9659379 A JP9659379 A JP 9659379A JP 9659379 A JP9659379 A JP 9659379A JP S5619459 A JPS5619459 A JP S5619459A
Authority
JP
Japan
Prior art keywords
circuit
electric control
state
control circuit
electric circuit
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
JP9659379A
Other languages
Japanese (ja)
Other versions
JPS646411B2 (en
Inventor
Takashi Serizawa
Tadao Totsuka
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.)
OOMU DENKI KK
Nissan Motor Co Ltd
Original Assignee
OOMU DENKI KK
Nissan Motor 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 OOMU DENKI KK, Nissan Motor Co Ltd filed Critical OOMU DENKI KK
Priority to JP9659379A priority Critical patent/JPS5619459A/en
Publication of JPS5619459A publication Critical patent/JPS5619459A/en
Publication of JPS646411B2 publication Critical patent/JPS646411B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
  • Testing Electric Properties And Detecting Electric Faults (AREA)

Abstract

PURPOSE: To make it possible to judge normal and defective elements of an electric circuit by storing the normal state of each element of the electric control circuit in a memory circuit and then by judging the state of each element of the electric control circuit by comparing it to the normal state.
CONSTITUTION: Voltages V0, V1...Vn of relay contacts, such as many sensor and limit switch elements, of electric control circuit E of a machine tool, etc., are input and states of respective input signals are stored in memory circuit 6, etc., automatically in accordance with steps of the tool. Then, the stored data are compared to data input later by comparing circuit 4 so as to know the state of the operation of the sensor, limit switch, etc., relating to each element, and its propriety is decided; and when the data disagree, the element is considered abnormal to display the number, etc., of the abnormal element on display circuit 16. The constitution like this can judge the propriety of each element of the electric circuit.
COPYRIGHT: (C)1981,JPO&Japio
JP9659379A 1979-07-27 1979-07-27 Fault diagnostic unit for electric circuit Granted JPS5619459A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9659379A JPS5619459A (en) 1979-07-27 1979-07-27 Fault diagnostic unit for electric circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9659379A JPS5619459A (en) 1979-07-27 1979-07-27 Fault diagnostic unit for electric circuit

Publications (2)

Publication Number Publication Date
JPS5619459A true JPS5619459A (en) 1981-02-24
JPS646411B2 JPS646411B2 (en) 1989-02-03

Family

ID=14169192

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9659379A Granted JPS5619459A (en) 1979-07-27 1979-07-27 Fault diagnostic unit for electric circuit

Country Status (1)

Country Link
JP (1) JPS5619459A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0333067U (en) * 1989-08-10 1991-04-02

Also Published As

Publication number Publication date
JPS646411B2 (en) 1989-02-03

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