JPS5556746A - Data transmission/reception system - Google Patents

Data transmission/reception system

Info

Publication number
JPS5556746A
JPS5556746A JP13077378A JP13077378A JPS5556746A JP S5556746 A JPS5556746 A JP S5556746A JP 13077378 A JP13077378 A JP 13077378A JP 13077378 A JP13077378 A JP 13077378A JP S5556746 A JPS5556746 A JP S5556746A
Authority
JP
Japan
Prior art keywords
station
line
data
slave
slave stations
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
JP13077378A
Other languages
Japanese (ja)
Inventor
Keigo Saito
Kozo Mori
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP13077378A priority Critical patent/JPS5556746A/en
Publication of JPS5556746A publication Critical patent/JPS5556746A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q9/00—Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom

Landscapes

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

Abstract

PURPOSE:To avoid the extra processes to the polling at the slave station side by adding a selection line to the slave station from the control station for the circuit through which the communication is carried out between the control station and several slave stations. CONSTITUTION:The addresses are allotted to slave stations 2-n from control station 1, and the data is transmitted and received via data transmission line A. In addition to line A, one of selection lines a-e is added to each station of 2-n from station 1. Thus the signal is transmitted to line (a) from station 1 in case the communication is given between stations 1 and 2, and as a result station 2 opens the gate to the data emerged at line A to secure the input and output of the data. Meanwhile other slave stations 3-n close the gates via lines b-e to avoid carrying out the input and output of the contents of line A. Thus each of slave stations 3-n is concentrated for the data process of its own.
JP13077378A 1978-10-24 1978-10-24 Data transmission/reception system Pending JPS5556746A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13077378A JPS5556746A (en) 1978-10-24 1978-10-24 Data transmission/reception system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13077378A JPS5556746A (en) 1978-10-24 1978-10-24 Data transmission/reception system

Publications (1)

Publication Number Publication Date
JPS5556746A true JPS5556746A (en) 1980-04-25

Family

ID=15042314

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13077378A Pending JPS5556746A (en) 1978-10-24 1978-10-24 Data transmission/reception system

Country Status (1)

Country Link
JP (1) JPS5556746A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6055793A (en) * 1983-09-07 1985-04-01 Tamura Electric Works Ltd Signal transmission and reception control system for key telephone system
JPH0193942A (en) * 1987-10-06 1989-04-12 Sumitomo Electric Ind Ltd Data transmission method
JP2008219707A (en) * 2007-03-07 2008-09-18 Fujitsu Telecom Networks Ltd Branched serial communication system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6055793A (en) * 1983-09-07 1985-04-01 Tamura Electric Works Ltd Signal transmission and reception control system for key telephone system
JPH0193942A (en) * 1987-10-06 1989-04-12 Sumitomo Electric Ind Ltd Data transmission method
JP2008219707A (en) * 2007-03-07 2008-09-18 Fujitsu Telecom Networks Ltd Branched serial communication system

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