JPS5478610A - Data transmission system - Google Patents

Data transmission system

Info

Publication number
JPS5478610A
JPS5478610A JP14699177A JP14699177A JPS5478610A JP S5478610 A JPS5478610 A JP S5478610A JP 14699177 A JP14699177 A JP 14699177A JP 14699177 A JP14699177 A JP 14699177A JP S5478610 A JPS5478610 A JP S5478610A
Authority
JP
Japan
Prior art keywords
bits
absence
signal
showing
bit
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
JP14699177A
Other languages
Japanese (ja)
Other versions
JPS5635062B2 (en
Inventor
Yasuo Uchida
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.)
Omron Corp
Original Assignee
Omron Tateisi Electronics Co
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 Omron Tateisi Electronics Co filed Critical Omron Tateisi Electronics Co
Priority to JP14699177A priority Critical patent/JPS5478610A/en
Publication of JPS5478610A publication Critical patent/JPS5478610A/en
Publication of JPS5635062B2 publication Critical patent/JPS5635062B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0078—Avoidance of errors by organising the transmitted data in a format specifically designed to deal with errors, e.g. location
    • H04L1/0083—Formatting with frames or packets; Protocol or part of protocol for error control

Abstract

PURPOSE:To secure standardization of the data format and thus to increase the transmission efficiency by including the code showing the presence or absence of the status and the text in the control field for HDLC. CONSTITUTION:The 8-bit structure following address field A is given to command character C or response character R of the control field. And 3 bits among the 8 bits are put under the idle state. Bits b1-b3 form status signal STS; bit b4 forms signal POL/INH showing the adaptablity of the polling or reception; and bit b5 forms signal T x T showing the presence or absence of the text respectively. Thus, the slave station decides the presence or absence of the information field by signal T x T, and sends signal STS back directly to the master station.
JP14699177A 1977-12-05 1977-12-05 Data transmission system Granted JPS5478610A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14699177A JPS5478610A (en) 1977-12-05 1977-12-05 Data transmission system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14699177A JPS5478610A (en) 1977-12-05 1977-12-05 Data transmission system

Publications (2)

Publication Number Publication Date
JPS5478610A true JPS5478610A (en) 1979-06-22
JPS5635062B2 JPS5635062B2 (en) 1981-08-14

Family

ID=15420132

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14699177A Granted JPS5478610A (en) 1977-12-05 1977-12-05 Data transmission system

Country Status (1)

Country Link
JP (1) JPS5478610A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58190154A (en) * 1982-04-30 1983-11-07 Mitsubishi Electric Corp Data transmitter
JPS5917757A (en) * 1982-07-21 1984-01-30 Nec Corp Controlling system of data transmission

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5255315A (en) * 1975-10-30 1977-05-06 Matsushita Electric Ind Co Ltd Data transmission control unit

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5255315A (en) * 1975-10-30 1977-05-06 Matsushita Electric Ind Co Ltd Data transmission control unit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58190154A (en) * 1982-04-30 1983-11-07 Mitsubishi Electric Corp Data transmitter
JPS5917757A (en) * 1982-07-21 1984-01-30 Nec Corp Controlling system of data transmission

Also Published As

Publication number Publication date
JPS5635062B2 (en) 1981-08-14

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