JPS5652950A - Circuit control method of data highway system - Google Patents

Circuit control method of data highway system

Info

Publication number
JPS5652950A
JPS5652950A JP12892279A JP12892279A JPS5652950A JP S5652950 A JPS5652950 A JP S5652950A JP 12892279 A JP12892279 A JP 12892279A JP 12892279 A JP12892279 A JP 12892279A JP S5652950 A JPS5652950 A JP S5652950A
Authority
JP
Japan
Prior art keywords
frame
transmission
transmits
station
rpol
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
JP12892279A
Other languages
Japanese (ja)
Other versions
JPS5910103B2 (en
Inventor
Seiichi Yasumoto
Toshiyuki Ide
Hitoshi Fushimi
Masakazu Okada
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 JP12892279A priority Critical patent/JPS5910103B2/en
Publication of JPS5652950A publication Critical patent/JPS5652950A/en
Publication of JPS5910103B2 publication Critical patent/JPS5910103B2/en
Expired 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]
    • H04L12/42—Loop networks
    • H04L12/423—Loop networks with centralised control, e.g. polling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B1/00—Engines characterised by fuel-air mixture compression
    • F02B1/02—Engines characterised by fuel-air mixture compression with positive ignition
    • F02B1/04—Engines characterised by fuel-air mixture compression with positive ignition with fuel-air mixture admission into cylinder

Landscapes

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

Abstract

PURPOSE:To make it possible to omit transmission of the END frame in case the transmission has been finished, and to elevate the working efficiency of the circuit, by automatically releasing a break of the data transmission due to an intermittent circuit fault, and making it possible to execute the automatic retransmission. CONSTITUTION:When CST (control station) 1 transmits a normal POL (polling), a station having a transmission request, among the computers 8, 9 or the terminal equipments 10-12 transmits the DATA frame in response to POL. The station designated by this frame enters the receiving operation, transmits the response frame (RESP) for executing the response transmission when the receiving has been completed, and continuously transmits the retransmission inquiring frame (RPOL). When the transmission station has received RESP and the RPOL frame following it, it decides that the data transmission has been completed, and prepares for the next transmission request by changing the RPOL frame to the normal frame.
JP12892279A 1979-10-08 1979-10-08 Line control method for data highway system Expired JPS5910103B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12892279A JPS5910103B2 (en) 1979-10-08 1979-10-08 Line control method for data highway system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12892279A JPS5910103B2 (en) 1979-10-08 1979-10-08 Line control method for data highway system

Publications (2)

Publication Number Publication Date
JPS5652950A true JPS5652950A (en) 1981-05-12
JPS5910103B2 JPS5910103B2 (en) 1984-03-07

Family

ID=14996686

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12892279A Expired JPS5910103B2 (en) 1979-10-08 1979-10-08 Line control method for data highway system

Country Status (1)

Country Link
JP (1) JPS5910103B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59172837A (en) * 1983-03-18 1984-09-29 Nippon Antenna Kk System for transmitting common receiving signal
JPS62148594A (en) * 1985-12-23 1987-07-02 Hiroo Kosaka Chemical liquid fuel and production thereof
JPH01204546A (en) * 1988-02-10 1989-08-17 Nec Corp Retransmission control system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59172837A (en) * 1983-03-18 1984-09-29 Nippon Antenna Kk System for transmitting common receiving signal
JPS62148594A (en) * 1985-12-23 1987-07-02 Hiroo Kosaka Chemical liquid fuel and production thereof
JPH01204546A (en) * 1988-02-10 1989-08-17 Nec Corp Retransmission control system

Also Published As

Publication number Publication date
JPS5910103B2 (en) 1984-03-07

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