JPS5479528A - Circulating information transmission system - Google Patents

Circulating information transmission system

Info

Publication number
JPS5479528A
JPS5479528A JP14678377A JP14678377A JPS5479528A JP S5479528 A JPS5479528 A JP S5479528A JP 14678377 A JP14678377 A JP 14678377A JP 14678377 A JP14678377 A JP 14678377A JP S5479528 A JPS5479528 A JP S5479528A
Authority
JP
Japan
Prior art keywords
cpu11
station
information transmission
function
master
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
JP14678377A
Other languages
Japanese (ja)
Other versions
JPS5741736B2 (en
Inventor
Hiroshi Tanaka
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP14678377A priority Critical patent/JPS5479528A/en
Publication of JPS5479528A publication Critical patent/JPS5479528A/en
Publication of JPS5741736B2 publication Critical patent/JPS5741736B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Detection And Prevention Of Errors In Transmission (AREA)
  • Small-Scale Networks (AREA)

Abstract

PURPOSE: To improve reliability by evading the breakdown of the entire system, by enabling the master station of function to revover through backup control immediately after the master station get into trouble during the system operation.
CONSTITUTION: This system is provided with CPU11 which exercises the management of the enitre system, and the 1st and 2nd master stations 131 and 132 which interpose in circulating information transmission lines L1 and L2, plus the 1st and 2nd direct memory access channels 121 and 122 connected to CPU11 corresponding to those stations 131 and 132. Then, CPU11 is enabled to function to transfer selectively data to either 1st station 131 or 2nd statiom 132 via channel 121 or 122; either channel 121 or 122 is made stand-by at a normal time and if either station 121 or 122 gets into trouble, it is switched to the other one through backup control immediately.
COPYRIGHT: (C)1979,JPO&Japio
JP14678377A 1977-12-07 1977-12-07 Circulating information transmission system Granted JPS5479528A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14678377A JPS5479528A (en) 1977-12-07 1977-12-07 Circulating information transmission system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14678377A JPS5479528A (en) 1977-12-07 1977-12-07 Circulating information transmission system

Publications (2)

Publication Number Publication Date
JPS5479528A true JPS5479528A (en) 1979-06-25
JPS5741736B2 JPS5741736B2 (en) 1982-09-04

Family

ID=15415425

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14678377A Granted JPS5479528A (en) 1977-12-07 1977-12-07 Circulating information transmission system

Country Status (1)

Country Link
JP (1) JPS5479528A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS547250A (en) * 1977-06-20 1979-01-19 Fuji Electric Co Ltd Process computer control system

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS547250A (en) * 1977-06-20 1979-01-19 Fuji Electric Co Ltd Process computer control system

Also Published As

Publication number Publication date
JPS5741736B2 (en) 1982-09-04

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