JPS5685103A - Multiplex control device - Google Patents

Multiplex control device

Info

Publication number
JPS5685103A
JPS5685103A JP16148579A JP16148579A JPS5685103A JP S5685103 A JPS5685103 A JP S5685103A JP 16148579 A JP16148579 A JP 16148579A JP 16148579 A JP16148579 A JP 16148579A JP S5685103 A JPS5685103 A JP S5685103A
Authority
JP
Japan
Prior art keywords
control device
system control
signal
detection
output
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
JP16148579A
Other languages
Japanese (ja)
Inventor
Yasuhiro Amahi
Naganobu Honda
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 JP16148579A priority Critical patent/JPS5685103A/en
Publication of JPS5685103A publication Critical patent/JPS5685103A/en
Pending legal-status Critical Current

Links

Landscapes

  • Safety Devices In Control Systems (AREA)
  • Testing And Monitoring For Control Systems (AREA)

Abstract

PURPOSE:To increase the detection accuracy of trouble with a simple constitution, by installing the double-system control device with which the same operation is performed with the selected output at one side delivered to the process plus the diagnosis control device which has the same function as the double-system control and is used only for detection of a faulty device. CONSTITUTION:The A-system control device 10 and the B-system control device 20 fetch the process signal Si and deliver the control signal So after carrying out the prescribed operation. The signal So is usually delivered from either one of said two systems. The operation output during a sampling plus the intermediate data are sent to the diagnosis system control device 40 from both systems to give a check whether the difference of the operation results is within a prescribed range or not. If the difference is out of the prescribed range, the same operation is carried out based on the process signals Si fetched at a time. Thus the faulty system is detected by the majority logic. With this output of detection, the swtiching logic 31 switches the selected system to another if it has some trouble.
JP16148579A 1979-12-14 1979-12-14 Multiplex control device Pending JPS5685103A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16148579A JPS5685103A (en) 1979-12-14 1979-12-14 Multiplex control device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16148579A JPS5685103A (en) 1979-12-14 1979-12-14 Multiplex control device

Publications (1)

Publication Number Publication Date
JPS5685103A true JPS5685103A (en) 1981-07-11

Family

ID=15735971

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16148579A Pending JPS5685103A (en) 1979-12-14 1979-12-14 Multiplex control device

Country Status (1)

Country Link
JP (1) JPS5685103A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5875206A (en) * 1981-10-28 1983-05-06 Mitsubishi Electric Corp Digital process controller
US6937824B2 (en) 2001-12-28 2005-08-30 Mitsubishi Denki Kabushiki Kaisha Optical transceiver, connector, substrate unit, optical transmitter, optical receiver, and semiconductor device
JP2017173942A (en) * 2016-03-22 2017-09-28 Ｋｙｂ株式会社 Controller

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5875206A (en) * 1981-10-28 1983-05-06 Mitsubishi Electric Corp Digital process controller
US6937824B2 (en) 2001-12-28 2005-08-30 Mitsubishi Denki Kabushiki Kaisha Optical transceiver, connector, substrate unit, optical transmitter, optical receiver, and semiconductor device
JP2017173942A (en) * 2016-03-22 2017-09-28 Ｋｙｂ株式会社 Controller

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