JPS6477341A - Data transmission system - Google Patents
Data transmission systemInfo
- Publication number
- JPS6477341A JPS6477341A JP62234080A JP23408087A JPS6477341A JP S6477341 A JPS6477341 A JP S6477341A JP 62234080 A JP62234080 A JP 62234080A JP 23408087 A JP23408087 A JP 23408087A JP S6477341 A JPS6477341 A JP S6477341A
- Authority
- JP
- Japan
- Prior art keywords
- data
- station
- line
- primary station
- primary
- 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
Links
Landscapes
- Small-Scale Networks (AREA)
- Communication Control (AREA)
- Maintenance And Management Of Digital Transmission (AREA)
Abstract
PURPOSE:To establish a data link even when a specific primary station is not fixed by retrieving a received identification flag at the time of transferring data from each data transmission equipment to other data transmission equipments and alternating a transmitting direction to two loop lines. CONSTITUTION:When line disconnection is generated, secondary stations 22, 23 detect the line disconnection respectively through an inner data line and an outer data line. The secondary station 22 goes to a primary station for the inner data line, the secondary station 23 goes to a primary station for the outer data line and respective primary stations start the transmission of an idle frame of the self-equipment a GO-AHEAD flag. A primary station flag LBF indicating the generation of the line disconnection in respective directions is set up on the idle frame. At the time of receiving the idle frame, the primary station 21 is switched to a secondary station mode about the same direction as respective LBFs. Consequently, data can be transferred among respective equipments on the data lines.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62234080A JP2526602B2 (en) | 1987-09-18 | 1987-09-18 | Data transmission method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62234080A JP2526602B2 (en) | 1987-09-18 | 1987-09-18 | Data transmission method |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6477341A true JPS6477341A (en) | 1989-03-23 |
JP2526602B2 JP2526602B2 (en) | 1996-08-21 |
Family
ID=16965289
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62234080A Expired - Lifetime JP2526602B2 (en) | 1987-09-18 | 1987-09-18 | Data transmission method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2526602B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2016111580A (en) * | 2014-12-09 | 2016-06-20 | 株式会社明電舎 | Communication control system, communication control method, and communication frame data structure |
-
1987
- 1987-09-18 JP JP62234080A patent/JP2526602B2/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2016111580A (en) * | 2014-12-09 | 2016-06-20 | 株式会社明電舎 | Communication control system, communication control method, and communication frame data structure |
Also Published As
Publication number | Publication date |
---|---|
JP2526602B2 (en) | 1996-08-21 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
ES8106993A1 (en) | System for conveying information between a transmitting centre and receiving stations, the system being provided with control means for gaining access to the conveyed information. | |
JPS56111353A (en) | Transmitting method for control information using common transmission line | |
JPS6486643A (en) | Multi-medium mail system | |
KR900006789B1 (en) | Loop transmission system having automatic loop configuration control means | |
JPS55117357A (en) | Time-division multiplex communication system | |
JPS5720053A (en) | Loop transmission system | |
GB2232859B (en) | Data networks | |
JPS55136742A (en) | Multiplex communication system | |
JPS6477341A (en) | Data transmission system | |
JPS55165047A (en) | Compensation unit for transmission delay time | |
JPS54152406A (en) | Information transfer control system of time-division multiple network | |
JPS56104558A (en) | Switching system of multitransmission line | |
JPS64833A (en) | Data transmission equipment | |
JPS6455959A (en) | Facsimile communication system | |
JPS5628553A (en) | Data transmission system | |
JPS6467052A (en) | Message transmission equipment | |
GR3018962T3 (en) | Method of short data transmission between a radio equipment and a processing unit. | |
JPS57184352A (en) | Forming system of communication circuit network | |
JPS57170659A (en) | Remote maintenance system for exchanger | |
JPS57168552A (en) | Data transfer system | |
JPS5635567A (en) | Facsimile system | |
JPS5644246A (en) | Program loading state discrimination system | |
JPS56116354A (en) | Failure monitor system | |
JPS5671352A (en) | Multidrop data communication system | |
JPS5792951A (en) | Signal transmission system |