JPS5640937A - Control system for common input/output unit - Google Patents

Control system for common input/output unit

Info

Publication number
JPS5640937A
JPS5640937A JP11601379A JP11601379A JPS5640937A JP S5640937 A JPS5640937 A JP S5640937A JP 11601379 A JP11601379 A JP 11601379A JP 11601379 A JP11601379 A JP 11601379A JP S5640937 A JPS5640937 A JP S5640937A
Authority
JP
Japan
Prior art keywords
unit
central control
control unit
decided
request
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
JP11601379A
Other languages
Japanese (ja)
Other versions
JPS5842485B2 (en
Inventor
Kunitoshi Sugi
Kiyoshi Aizawa
Yoshinari Gotou
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.)
Denso Corp
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone Corp
NipponDenso 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 Nippon Telegraph and Telephone Corp, NipponDenso Co Ltd filed Critical Nippon Telegraph and Telephone Corp
Priority to JP54116013A priority Critical patent/JPS5842485B2/en
Publication of JPS5640937A publication Critical patent/JPS5640937A/en
Publication of JPS5842485B2 publication Critical patent/JPS5842485B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Hardware Redundancy (AREA)
  • Multi Processors (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

PURPOSE: To avoid the conflict of operation for the shared input/output unit, by operating the designated central control unit during the designation of the manual control by the request of the central control unit if the unit is normal and then operating the unit by the request given by the central control unit decided as the master group if the designated central control unit is not normal respectively.
CONSTITUTION: During the designation of the automatic control, the master-group central control unit identifying unit 6 supplies the number of the central control unit decided as the master to the common unit/output unit switching unit 8. On the other hand, during the designation of the manual control, the designated central control unit deciding unit 7 supplies to the unit 8 the number of the designated central control unit in case the designated central control unit decides the possibility for generation of the operation request and the number of the central control unit decided as the master in case the incapability for generation of the operation request is decided respectively. Thus the internal switch is changed over. And only the request of operation given from the central control unit decided by the unit 6 or 7 among the central control units 1 and 2 is transmitted to the common input/ output unit.
COPYRIGHT: (C)1981,JPO&Japio
JP54116013A 1979-09-10 1979-09-10 Common input/output device control method Expired JPS5842485B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54116013A JPS5842485B2 (en) 1979-09-10 1979-09-10 Common input/output device control method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54116013A JPS5842485B2 (en) 1979-09-10 1979-09-10 Common input/output device control method

Publications (2)

Publication Number Publication Date
JPS5640937A true JPS5640937A (en) 1981-04-17
JPS5842485B2 JPS5842485B2 (en) 1983-09-20

Family

ID=14676647

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54116013A Expired JPS5842485B2 (en) 1979-09-10 1979-09-10 Common input/output device control method

Country Status (1)

Country Link
JP (1) JPS5842485B2 (en)

Also Published As

Publication number Publication date
JPS5842485B2 (en) 1983-09-20

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