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JPS5538715A - Fault detection system - Google Patents

Fault detection system

Info

Publication number
JPS5538715A
JPS5538715A JP11072578A JP11072578A JPS5538715A JP S5538715 A JPS5538715 A JP S5538715A JP 11072578 A JP11072578 A JP 11072578A JP 11072578 A JP11072578 A JP 11072578A JP S5538715 A JPS5538715 A JP S5538715A
Authority
JP
Japan
Prior art keywords
test
word
information
station
transmitted
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
JP11072578A
Other languages
Japanese (ja)
Inventor
Takashi 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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP11072578A priority Critical patent/JPS5538715A/en
Publication of JPS5538715A publication Critical patent/JPS5538715A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/42—Loop networks
    • H04L12/437—Ring fault isolation or reconfiguration

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Selective Calling Equipment (AREA)

Abstract

PURPOSE:To ensure a quick detection of the fault of the display linking function even when no linking information is given by supplying the device test information to the blank word which is transmitted when no information is transmitted. CONSTITUTION:In the remote control equipment in which one master station 2 and plural slave stations 3-1-3-N are connected to the loop-type transmission line 4, the blank word having no information contained in the transmission word is formed with only the synchronous signal and the W code. Then the test position is provided for each slave station, and the test word is set up to transmit the test position to give decision via the W code for identity of the test code. And when no inter-station linking is given, the master station transmits the test word including the control command of the test position of one slave station. This command is checked whether it is transmitted between slave stations in the normal way. And in case some fault is detected, the necessary linkage is given immediately to the faulty slave station.
JP11072578A 1978-09-11 1978-09-11 Fault detection system Pending JPS5538715A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11072578A JPS5538715A (en) 1978-09-11 1978-09-11 Fault detection system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11072578A JPS5538715A (en) 1978-09-11 1978-09-11 Fault detection system

Publications (1)

Publication Number Publication Date
JPS5538715A true JPS5538715A (en) 1980-03-18

Family

ID=14542900

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11072578A Pending JPS5538715A (en) 1978-09-11 1978-09-11 Fault detection system

Country Status (1)

Country Link
JP (1) JPS5538715A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6320270U (en) * 1986-07-22 1988-02-10
JP2017126858A (en) * 2016-01-13 2017-07-20 株式会社デンソー Electronic controller
CN109993958A (en) * 2019-05-08 2019-07-09 深圳市共济科技股份有限公司 A kind of data collection system and method for RS485 bus

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6320270U (en) * 1986-07-22 1988-02-10
JPH054062Y2 (en) * 1986-07-22 1993-02-01
JP2017126858A (en) * 2016-01-13 2017-07-20 株式会社デンソー Electronic controller
CN109993958A (en) * 2019-05-08 2019-07-09 深圳市共济科技股份有限公司 A kind of data collection system and method for RS485 bus

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