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JPS55107362A - Control system for power supply cut-off - Google Patents

Control system for power supply cut-off

Info

Publication number
JPS55107362A
JPS55107362A JP1411979A JP1411979A JPS55107362A JP S55107362 A JPS55107362 A JP S55107362A JP 1411979 A JP1411979 A JP 1411979A JP 1411979 A JP1411979 A JP 1411979A JP S55107362 A JPS55107362 A JP S55107362A
Authority
JP
Japan
Prior art keywords
power supply
cut
signal
communication units
control system
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
JP1411979A
Other languages
Japanese (ja)
Other versions
JPS5746259B2 (en
Inventor
Yoichi Suzuki
Yoshihiro Kitano
Teruyoshi Mita
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 JP1411979A priority Critical patent/JPS55107362A/en
Publication of JPS55107362A publication Critical patent/JPS55107362A/en
Publication of JPS5746259B2 publication Critical patent/JPS5746259B2/ja
Granted 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

Landscapes

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

Abstract

PURPOSE:To enable to automatically cut off the power supply of other communication units at the same time, by transmitting the simultaneous power supply cut-off signal to the transmission line when the power supply for an arbitrary communication unit is cut off, and enabling other communication units to detect the signal. CONSTITUTION:When the power supply is cut off by closing the power off switch SW with an arbitrary communication unit Nl among a plurality of communication units, the simultaneous power supply cut off signal is delivered to the transmission line L from the cut-off signal generator 2 on the way of the power supply sequence. The signal is detected at the cut-off signal detection section 2' of other communication units to activate the relay RL4 and to cut off the power supply. In this case, since the time required for the delivery of the simultaneous power supply cut-off signal is very short, power supply cup-off can be made almost at the same time.
JP1411979A 1979-02-09 1979-02-09 Control system for power supply cut-off Granted JPS55107362A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1411979A JPS55107362A (en) 1979-02-09 1979-02-09 Control system for power supply cut-off

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1411979A JPS55107362A (en) 1979-02-09 1979-02-09 Control system for power supply cut-off

Publications (2)

Publication Number Publication Date
JPS55107362A true JPS55107362A (en) 1980-08-18
JPS5746259B2 JPS5746259B2 (en) 1982-10-02

Family

ID=11852225

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1411979A Granted JPS55107362A (en) 1979-02-09 1979-02-09 Control system for power supply cut-off

Country Status (1)

Country Link
JP (1) JPS55107362A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5768939A (en) * 1980-10-16 1982-04-27 Fuji Electric Co Ltd Remote power supply applying system for port for optical data way system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5768939A (en) * 1980-10-16 1982-04-27 Fuji Electric Co Ltd Remote power supply applying system for port for optical data way system
JPS6142463B2 (en) * 1980-10-16 1986-09-20 Fuji Denki Kk

Also Published As

Publication number Publication date
JPS5746259B2 (en) 1982-10-02

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