JPS6426901A - Control output switch device for duplex system - Google Patents

Control output switch device for duplex system

Info

Publication number
JPS6426901A
JPS6426901A JP18230487A JP18230487A JPS6426901A JP S6426901 A JPS6426901 A JP S6426901A JP 18230487 A JP18230487 A JP 18230487A JP 18230487 A JP18230487 A JP 18230487A JP S6426901 A JPS6426901 A JP S6426901A
Authority
JP
Japan
Prior art keywords
abnormality
control output
outputted
abnormal signal
main
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
JP18230487A
Other languages
Japanese (ja)
Inventor
Masayoshi Ueda
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 JP18230487A priority Critical patent/JPS6426901A/en
Publication of JPS6426901A publication Critical patent/JPS6426901A/en
Pending legal-status Critical Current

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  • Safety Devices In Control Systems (AREA)

Abstract

PURPOSE:To surely prevent the mis-switching actions of the control output due to the abnormality of a main diagnosis part, by connecting a delay timer to a main system diagnosis part of the back-up system side to delay the abnormal signal of a main system. CONSTITUTION:The abnormality occurs at a main system diagnosis part 2 and the abnormal signal of a main system B is outputted mistakenly although the system B has actually no trouble. In such a case, the abnormal signal of the system B is held temporarily and not outputted by the function of on-delay timer 8. While a self-diagnosis part 1 of a back-up system A detects the abnormality of the part 2 itself for a set period of time of the timer 8. This abnormality detection output is supplied to an AND gate 9 and the misoutput of a switch 10 is blocked. Thus it is possible to avoid such a case where the control output 6 is outputted mistakenly from a control arithmetic part 3 via the switch 10 owing to the abnormality of the part 2.
JP18230487A 1987-07-23 1987-07-23 Control output switch device for duplex system Pending JPS6426901A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18230487A JPS6426901A (en) 1987-07-23 1987-07-23 Control output switch device for duplex system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18230487A JPS6426901A (en) 1987-07-23 1987-07-23 Control output switch device for duplex system

Publications (1)

Publication Number Publication Date
JPS6426901A true JPS6426901A (en) 1989-01-30

Family

ID=16115949

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18230487A Pending JPS6426901A (en) 1987-07-23 1987-07-23 Control output switch device for duplex system

Country Status (1)

Country Link
JP (1) JPS6426901A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001056701A (en) * 1999-07-15 2001-02-27 Robert Bosch Gmbh Method and device for mutually monitoring control units

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001056701A (en) * 1999-07-15 2001-02-27 Robert Bosch Gmbh Method and device for mutually monitoring control units

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