JPS5555642A - Duplex system in data transmission slave station - Google Patents

Duplex system in data transmission slave station

Info

Publication number
JPS5555642A
JPS5555642A JP12887278A JP12887278A JPS5555642A JP S5555642 A JPS5555642 A JP S5555642A JP 12887278 A JP12887278 A JP 12887278A JP 12887278 A JP12887278 A JP 12887278A JP S5555642 A JPS5555642 A JP S5555642A
Authority
JP
Japan
Prior art keywords
slave station
station
slave
circuit
duplex
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
JP12887278A
Other languages
Japanese (ja)
Inventor
Kazutaka Osagawa
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP12887278A priority Critical patent/JPS5555642A/en
Publication of JPS5555642A publication Critical patent/JPS5555642A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/14—Two-way operation using the same type of signal, i.e. duplex

Landscapes

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

Abstract

PURPOSE:To make duplex the slave station without troublesome processing by giving the same address to a pair of duplex station and by connection so that FF functions can respectively given. CONSTITUTION:The output S1 of the control circuit 6 is the data transmission request signal to the master station, and the input S2 of the AND circuit AD1 is 1 when the circuit 6 is normal. The output S3 of the circuit AD1 is 1 when the slave station is usable. When the slave station is used singly, the terminals D11, D21 and D12, D22 are opened. When duplex is desired, the terminals D11, D22, D21, D22 are connected between slave stations 21 and 22. With this connection, if operation is disable due to failure of power supply of slave station and failure in the transmission circuit during transmission, the transistor Tr of the slave station is OFF and the transistor of another slave station is ON, the transmission operation is automatically transferred to the slave station and the return message to the master station is made by the other. Thus, with the constitution of slave station of FF function cap perform the play of n stations with 2n sets of slave stations.
JP12887278A 1978-10-19 1978-10-19 Duplex system in data transmission slave station Pending JPS5555642A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12887278A JPS5555642A (en) 1978-10-19 1978-10-19 Duplex system in data transmission slave station

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12887278A JPS5555642A (en) 1978-10-19 1978-10-19 Duplex system in data transmission slave station

Publications (1)

Publication Number Publication Date
JPS5555642A true JPS5555642A (en) 1980-04-23

Family

ID=14995439

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12887278A Pending JPS5555642A (en) 1978-10-19 1978-10-19 Duplex system in data transmission slave station

Country Status (1)

Country Link
JP (1) JPS5555642A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59171236A (en) * 1983-02-07 1984-09-27 Toshiba Corp Backup method of transmitter
JPH01226242A (en) * 1988-03-04 1989-09-08 Pfu Ltd System for multiplexing lan controller
KR100383872B1 (en) * 2001-02-08 2003-05-14 주식회사 리더컴 Dual unit for reliable termination and connection in synchronous transmission system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59171236A (en) * 1983-02-07 1984-09-27 Toshiba Corp Backup method of transmitter
JPH01226242A (en) * 1988-03-04 1989-09-08 Pfu Ltd System for multiplexing lan controller
KR100383872B1 (en) * 2001-02-08 2003-05-14 주식회사 리더컴 Dual unit for reliable termination and connection in synchronous transmission system

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