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JPS5799058A - Data transmission system - Google Patents

Data transmission system

Info

Publication number
JPS5799058A
JPS5799058A JP55175287A JP17528780A JPS5799058A JP S5799058 A JPS5799058 A JP S5799058A JP 55175287 A JP55175287 A JP 55175287A JP 17528780 A JP17528780 A JP 17528780A JP S5799058 A JPS5799058 A JP S5799058A
Authority
JP
Japan
Prior art keywords
substation
data
status list
transmission
control section
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
JP55175287A
Other languages
Japanese (ja)
Inventor
Takamasa Koga
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 JP55175287A priority Critical patent/JPS5799058A/en
Publication of JPS5799058A publication Critical patent/JPS5799058A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/40—Bus networks
    • H04L12/403—Bus networks with centralised control, e.g. polling

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Small-Scale Networks (AREA)

Abstract

PURPOSE:To eliminate the need for useless inquiry at failure of opposing stations and to increase the data transmission efficiency at failure generation, by giving a monitor function to each substation connected to bus transmission line. CONSTITUTION:A main station SVC-ST transmits a transmission data QST1 for inquiry to a substation S-ST1 at every prescribed time. After this transmission data is received at a relay device 21 in the S-ST1, it is inputted to a control section 24 via an interface 22. This control section 24 discriminates if the input data is a status list. If it is the status list, it is stored in a specific area of a memory 23. The control section 24 transmits the said new status list to the succeeding substation S-ST2 as a transmission data QST2. Thus, each substation forms the newest status list and judges if the data transmission to the opposing station can be made.
JP55175287A 1980-12-12 1980-12-12 Data transmission system Pending JPS5799058A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55175287A JPS5799058A (en) 1980-12-12 1980-12-12 Data transmission system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55175287A JPS5799058A (en) 1980-12-12 1980-12-12 Data transmission system

Publications (1)

Publication Number Publication Date
JPS5799058A true JPS5799058A (en) 1982-06-19

Family

ID=15993475

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55175287A Pending JPS5799058A (en) 1980-12-12 1980-12-12 Data transmission system

Country Status (1)

Country Link
JP (1) JPS5799058A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60112341A (en) * 1983-11-24 1985-06-18 Toshiba Corp Detecting method for state change of transmission control system
JPS60112339A (en) * 1983-11-22 1985-06-18 Nec Corp Informing system for fault of circular data bus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60112339A (en) * 1983-11-22 1985-06-18 Nec Corp Informing system for fault of circular data bus
JPS60112341A (en) * 1983-11-24 1985-06-18 Toshiba Corp Detecting method for state change of transmission control system

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