JPS6472697A - Device for automatizing distribution line - Google Patents

Device for automatizing distribution line

Info

Publication number
JPS6472697A
JPS6472697A JP62230066A JP23006687A JPS6472697A JP S6472697 A JPS6472697 A JP S6472697A JP 62230066 A JP62230066 A JP 62230066A JP 23006687 A JP23006687 A JP 23006687A JP S6472697 A JPS6472697 A JP S6472697A
Authority
JP
Japan
Prior art keywords
supervisory
return signals
slave
transmission
fault
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
JP62230066A
Other languages
Japanese (ja)
Inventor
Hiromichi Sugawara
Toshiaki Miyata
Hiroki Kono
Masao Tsukada
Teruo Murakami
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
Fuji Electric Co Ltd
Chubu Electric Power Co Inc
Mitsubishi Electric Corp
Original Assignee
Toshiba Corp
Fuji Electric Co Ltd
Chubu Electric Power Co Inc
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 Toshiba Corp, Fuji Electric Co Ltd, Chubu Electric Power Co Inc, Mitsubishi Electric Corp filed Critical Toshiba Corp
Priority to JP62230066A priority Critical patent/JPS6472697A/en
Publication of JPS6472697A publication Critical patent/JPS6472697A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To prevent the remote supervisory control of other sound slave stations from troubling due to a fault slave station by providing response time supervisory circuits stopping forcibly the transmission of supervisory return signals when a response time of the supervisory return signals transmitted from the slave stations exceeds a specified value. CONSTITUTION:When the action of a slave station R1 is normal, a transmission time by the slave station terminates in t1. When the supervisory return signals 71 are continuously transmitted due to the fault and the like, a timer 81 in the response time supervisory circuit 41 times out after t2 hours, and a switching circuit 51 is forcibly switched OFF, whereby the transmission of the supervisory return signals 71 are stopped. Consequently, the slave station R1 is detached from a transmission line (l). Thus, the fault is not given to communication between the other sound slave stations R2-Rn and the master station 1. The slave stations R2-Rn are similarly detached from the transmission line (l) When the supervisory return signals continue.
JP62230066A 1987-09-14 1987-09-14 Device for automatizing distribution line Pending JPS6472697A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62230066A JPS6472697A (en) 1987-09-14 1987-09-14 Device for automatizing distribution line

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62230066A JPS6472697A (en) 1987-09-14 1987-09-14 Device for automatizing distribution line

Publications (1)

Publication Number Publication Date
JPS6472697A true JPS6472697A (en) 1989-03-17

Family

ID=16902008

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62230066A Pending JPS6472697A (en) 1987-09-14 1987-09-14 Device for automatizing distribution line

Country Status (1)

Country Link
JP (1) JPS6472697A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04119740A (en) * 1990-09-11 1992-04-21 Hitachi Ltd Remote monitor control method
JPH04160833A (en) * 1990-10-24 1992-06-04 Yamatake Honeywell Co Ltd Channel abnormality noticing method in lan
US7394824B2 (en) 2001-12-05 2008-07-01 Mitsubishi Denki Kabushiki Kaisha System and method of transmitting variable length packet by sequential allocation of permission and monitoring response detection time period

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55154854A (en) * 1979-05-23 1980-12-02 Hitachi Ltd Data communication unit
JPS56103586A (en) * 1980-01-23 1981-08-18 Hitachi Ltd Remote monitor control device
JPS58202693A (en) * 1982-05-21 1983-11-25 Toshiba Corp Remote monitor control system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55154854A (en) * 1979-05-23 1980-12-02 Hitachi Ltd Data communication unit
JPS56103586A (en) * 1980-01-23 1981-08-18 Hitachi Ltd Remote monitor control device
JPS58202693A (en) * 1982-05-21 1983-11-25 Toshiba Corp Remote monitor control system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04119740A (en) * 1990-09-11 1992-04-21 Hitachi Ltd Remote monitor control method
JPH04160833A (en) * 1990-10-24 1992-06-04 Yamatake Honeywell Co Ltd Channel abnormality noticing method in lan
US7394824B2 (en) 2001-12-05 2008-07-01 Mitsubishi Denki Kabushiki Kaisha System and method of transmitting variable length packet by sequential allocation of permission and monitoring response detection time period

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