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JPS5483702A - Input-output branch unit - Google Patents

Input-output branch unit

Info

Publication number
JPS5483702A
JPS5483702A JP15199577A JP15199577A JPS5483702A JP S5483702 A JPS5483702 A JP S5483702A JP 15199577 A JP15199577 A JP 15199577A JP 15199577 A JP15199577 A JP 15199577A JP S5483702 A JPS5483702 A JP S5483702A
Authority
JP
Japan
Prior art keywords
input
output device
output
branch unit
circuits
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
JP15199577A
Other languages
Japanese (ja)
Other versions
JPS5816781B2 (en
Inventor
Teruhisa Fukahori
Yasuo Otani
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP52151995A priority Critical patent/JPS5816781B2/en
Publication of JPS5483702A publication Critical patent/JPS5483702A/en
Publication of JPS5816781B2 publication Critical patent/JPS5816781B2/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]
    • H04L12/40—Bus networks

Landscapes

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

Abstract

PURPOSE:To enable an input-output device to stop or start operating without influencing other operating device by using an input-output branch unit for data communication which employs a common circuit and several input-output devices connected to it. CONSTITUTION:When input-output device 5 is connected to connection terminal part 12 of input-output branch unit 3, a voltage is applied to terminals 12-13 and 12-14, thereby operating relay 15. With contacts 17 and 18 both closed, terminating circuits of reception control lines RS1 and RS2, and transmission control lines GS1 and GS2 are constituted respectively. With contacts 19 to 22 opened, direct feeding to circuits after input-output device 6 is cut off and relaying is made via input- output device 5, so that there will be not influence upon other input-output devices at an operation-start time. When the operation is interruptted, the power supply is OFF and relay 15 recovers, so that lines well be connected directly to circuits after input-output device 6.
JP52151995A 1977-12-16 1977-12-16 I/O branching device Expired JPS5816781B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP52151995A JPS5816781B2 (en) 1977-12-16 1977-12-16 I/O branching device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP52151995A JPS5816781B2 (en) 1977-12-16 1977-12-16 I/O branching device

Publications (2)

Publication Number Publication Date
JPS5483702A true JPS5483702A (en) 1979-07-04
JPS5816781B2 JPS5816781B2 (en) 1983-04-02

Family

ID=15530752

Family Applications (1)

Application Number Title Priority Date Filing Date
JP52151995A Expired JPS5816781B2 (en) 1977-12-16 1977-12-16 I/O branching device

Country Status (1)

Country Link
JP (1) JPS5816781B2 (en)

Also Published As

Publication number Publication date
JPS5816781B2 (en) 1983-04-02

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