JPS5723141A - Fault detecting circuit of computer analog output equipment - Google Patents

Fault detecting circuit of computer analog output equipment

Info

Publication number
JPS5723141A
JPS5723141A JP9752580A JP9752580A JPS5723141A JP S5723141 A JPS5723141 A JP S5723141A JP 9752580 A JP9752580 A JP 9752580A JP 9752580 A JP9752580 A JP 9752580A JP S5723141 A JPS5723141 A JP S5723141A
Authority
JP
Japan
Prior art keywords
analog output
output
analog
output equipment
detecting 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.)
Pending
Application number
JP9752580A
Other languages
Japanese (ja)
Inventor
Shigeki Adachi
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 JP9752580A priority Critical patent/JPS5723141A/en
Publication of JPS5723141A publication Critical patent/JPS5723141A/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Control By Computers (AREA)

Abstract

PURPOSE:To detect an analog output equipment being troubled on the whole, by switching analog output voltages through an analog multiplexer and comparing it with a reference voltage. CONSTITUTION:With the signal of an ADDRESS.BUS, a point address decoder 9 selects an analog output point and then selects a buffer register 5 to write digital data. This data is converted by an A/D converter 6 and outputted 8 via an output buffer amplifier 7. Simultaneously, a point address and an analog output signal are inputted to an analog MPX10. The MPX inputs the selected output to a comparator 12 by the point address. The comparator compares the input with the voltages of a reference power source 11 and when the error is large, sets an FF13. The output of the FF undergoes DATA.BUSVON.BUS with respect to a failure signal.
JP9752580A 1980-07-18 1980-07-18 Fault detecting circuit of computer analog output equipment Pending JPS5723141A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9752580A JPS5723141A (en) 1980-07-18 1980-07-18 Fault detecting circuit of computer analog output equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9752580A JPS5723141A (en) 1980-07-18 1980-07-18 Fault detecting circuit of computer analog output equipment

Publications (1)

Publication Number Publication Date
JPS5723141A true JPS5723141A (en) 1982-02-06

Family

ID=14194663

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9752580A Pending JPS5723141A (en) 1980-07-18 1980-07-18 Fault detecting circuit of computer analog output equipment

Country Status (1)

Country Link
JP (1) JPS5723141A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58225452A (en) * 1982-06-25 1983-12-27 Nissan Motor Co Ltd Checking circuit of microcomputer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58225452A (en) * 1982-06-25 1983-12-27 Nissan Motor Co Ltd Checking circuit of microcomputer

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