WO2009066456A1 - Line connection device and communication system - Google Patents

Line connection device and communication system Download PDF

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Publication number
WO2009066456A1
WO2009066456A1 PCT/JP2008/003408 JP2008003408W WO2009066456A1 WO 2009066456 A1 WO2009066456 A1 WO 2009066456A1 JP 2008003408 W JP2008003408 W JP 2008003408W WO 2009066456 A1 WO2009066456 A1 WO 2009066456A1
Authority
WO
WIPO (PCT)
Prior art keywords
line
connection device
line connection
branch lines
branch
Prior art date
Application number
PCT/JP2008/003408
Other languages
French (fr)
Japanese (ja)
Inventor
Shunsuke Hayashi
Kenji Habaguchi
Kuniharu Akabane
Original Assignee
Yokogawa Electric Corporation
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 Yokogawa Electric Corporation filed Critical Yokogawa Electric Corporation
Publication of WO2009066456A1 publication Critical patent/WO2009066456A1/en

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
    • H04L12/40169—Flexible bus arrangements
    • H04L12/40176—Flexible bus arrangements involving redundancy
    • H04L12/40182—Flexible bus arrangements involving redundancy by using a plurality of communication lines

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Selective Calling Equipment (AREA)
  • Maintenance And Management Of Digital Transmission (AREA)

Abstract

A communication system includes: a trunk line; a plurality of branch lines; a control device (a parent station) connected to the trunk line; process devices (child stations) respectively connected to the branch lines; and a line connection device which connects the branch lines to the trunk line by the multi-drop format. Upon detection of a communication error, the control device (parent station) successively disconnects the line connection device from the branch lines. By monitoring a communication error during the successive disconnection, the control device judges whether a branch line has failed and causes the line connection device to disconnect the branch line which has failed.
PCT/JP2008/003408 2007-11-21 2008-11-20 Line connection device and communication system WO2009066456A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007302081A JP2009130536A (en) 2007-11-21 2007-11-21 Line connection device and communication system
JP2007-302081 2007-11-21

Publications (1)

Publication Number Publication Date
WO2009066456A1 true WO2009066456A1 (en) 2009-05-28

Family

ID=40667289

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/003408 WO2009066456A1 (en) 2007-11-21 2008-11-20 Line connection device and communication system

Country Status (2)

Country Link
JP (1) JP2009130536A (en)
WO (1) WO2009066456A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015002525A (en) * 2013-06-18 2015-01-05 株式会社デンソー Relay device
CN105657670A (en) * 2014-11-11 2016-06-08 中兴通讯股份有限公司 Terminal state control method and device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06327055A (en) * 1993-05-13 1994-11-25 Nec Corp Control system
JPH08191491A (en) * 1995-01-11 1996-07-23 Toshiba Corp Field bus system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06327055A (en) * 1993-05-13 1994-11-25 Nec Corp Control system
JPH08191491A (en) * 1995-01-11 1996-07-23 Toshiba Corp Field bus system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015002525A (en) * 2013-06-18 2015-01-05 株式会社デンソー Relay device
CN105657670A (en) * 2014-11-11 2016-06-08 中兴通讯股份有限公司 Terminal state control method and device

Also Published As

Publication number Publication date
JP2009130536A (en) 2009-06-11

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