JPS5616350A - Data transmitting system - Google Patents

Data transmitting system

Info

Publication number
JPS5616350A
JPS5616350A JP9245279A JP9245279A JPS5616350A JP S5616350 A JPS5616350 A JP S5616350A JP 9245279 A JP9245279 A JP 9245279A JP 9245279 A JP9245279 A JP 9245279A JP S5616350 A JPS5616350 A JP S5616350A
Authority
JP
Japan
Prior art keywords
signal
processor
sent
slave station
polling
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
JP9245279A
Other languages
Japanese (ja)
Inventor
Hiroyoshi Masaka
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP9245279A priority Critical patent/JPS5616350A/en
Publication of JPS5616350A publication Critical patent/JPS5616350A/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 increase the efficiency of transmission by sending the polling signal to the next station in case no answer signal is sent from the slave station within a fixed time. CONSTITUTION:When polling request signal Ic is sent from processor 1, control part 6 examines signal 3b. And if signal 3b is low, signals 6a and 6b are delivered. Then processor 1 receives signal 6a to transmit polling signal 1a. Signal 1a is then sent to the 1st slave station via transmitter 2, transmission/reception switch 3 and antenna 4 each. In this case, processor 1 waits for the answer signal to be sent from the slave station for a fixed time. And in case no answer signal is received in a fixed time via antenna 4, switch 3 and receiver 5 each, processor 1 gives the polling to the next (2nd) slave station in the same transmitting sequence as that mentioned above. Thus the efficiency of transmission can be increased greatly.
JP9245279A 1979-07-18 1979-07-18 Data transmitting system Pending JPS5616350A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9245279A JPS5616350A (en) 1979-07-18 1979-07-18 Data transmitting system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9245279A JPS5616350A (en) 1979-07-18 1979-07-18 Data transmitting system

Publications (1)

Publication Number Publication Date
JPS5616350A true JPS5616350A (en) 1981-02-17

Family

ID=14054784

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9245279A Pending JPS5616350A (en) 1979-07-18 1979-07-18 Data transmitting system

Country Status (1)

Country Link
JP (1) JPS5616350A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59127448A (en) * 1983-01-10 1984-07-23 Tokyo Electric Power Co Inc:The Data gathering system
JPS60103274A (en) * 1983-11-09 1985-06-07 三菱電機株式会社 Steam generating and condensing device
JPH01158064U (en) * 1988-04-22 1989-10-31

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59127448A (en) * 1983-01-10 1984-07-23 Tokyo Electric Power Co Inc:The Data gathering system
JPS60103274A (en) * 1983-11-09 1985-06-07 三菱電機株式会社 Steam generating and condensing device
JPH01158064U (en) * 1988-04-22 1989-10-31

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