JPS56126344A - Transmitting method - Google Patents

Transmitting method

Info

Publication number
JPS56126344A
JPS56126344A JP3008180A JP3008180A JPS56126344A JP S56126344 A JPS56126344 A JP S56126344A JP 3008180 A JP3008180 A JP 3008180A JP 3008180 A JP3008180 A JP 3008180A JP S56126344 A JPS56126344 A JP S56126344A
Authority
JP
Japan
Prior art keywords
machinery
circuit
sbb
saa
input
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
JP3008180A
Other languages
Japanese (ja)
Inventor
Wataru Sakagami
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP3008180A priority Critical patent/JPS56126344A/en
Publication of JPS56126344A publication Critical patent/JPS56126344A/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
    • H04Q9/06—Calling by using amplitude or polarity of dc

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Time-Division Multiplex Systems (AREA)

Abstract

PURPOSE:To secure the redundancy at the area of installation of a machinery, by using signals individually in different levels for several different signal transmitting systems, and then using several different signal transmitting system lines in common. CONSTITUTION:For the system SAA comprising the machinery 1A and 2A, a level shifting threshold circuit is provided at the output of the input to set the threshold value at +V for a mutual transfer of the data. On the other hand, a level shifting threshold circuit is provided at the output or the input to set the threshold value at -V for the system SBB comprising the machinery 3A and 4A. The machinery 1A- 4A are connected each other by the circuit L. In such way, the systems SAA and SBB drive the circuits with the signals having the opposite polarities to each other to avoid interference.
JP3008180A 1980-03-10 1980-03-10 Transmitting method Pending JPS56126344A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3008180A JPS56126344A (en) 1980-03-10 1980-03-10 Transmitting method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3008180A JPS56126344A (en) 1980-03-10 1980-03-10 Transmitting method

Publications (1)

Publication Number Publication Date
JPS56126344A true JPS56126344A (en) 1981-10-03

Family

ID=12293839

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3008180A Pending JPS56126344A (en) 1980-03-10 1980-03-10 Transmitting method

Country Status (1)

Country Link
JP (1) JPS56126344A (en)

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