JPS5893059U - Loop data transmission device - Google Patents
Loop data transmission deviceInfo
- Publication number
- JPS5893059U JPS5893059U JP18858881U JP18858881U JPS5893059U JP S5893059 U JPS5893059 U JP S5893059U JP 18858881 U JP18858881 U JP 18858881U JP 18858881 U JP18858881 U JP 18858881U JP S5893059 U JPS5893059 U JP S5893059U
- Authority
- JP
- Japan
- Prior art keywords
- transmission
- circuit
- serial
- serial data
- data group
- 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
Links
Landscapes
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図はループ式伝送系に適用される従来のステーショ
ンの構成を示す具体的なブロック構成図、第２図は本考
案による一実施例を示すステーションの具体的なブロッ
ク構成図である。
１・・・シリアル回線、２〜２ｎ・・・ステーション、
３・・・送信ドライバー、４・・・送信回路、５・・・
受信レシーバ−１６・・・受信回路、７・・・ＯＮ故障
検出回路、８・・・インヒビット回路、９・・・スイッ
チ。FIG. 1 is a concrete block diagram showing the configuration of a conventional station applied to a loop transmission system, and FIG. 2 is a concrete block diagram of a station showing an embodiment of the present invention. 1...Serial line, 2~2n...Station,
3... Transmission driver, 4... Transmission circuit, 5...
Receiver - 16...Reception circuit, 7...ON failure detection circuit, 8...Inhibit circuit, 9...Switch.
Claims (1)
受信レシーバ−と、シリアルデータをパラレルデータに
直−並列変換する受信回路と、入力されるパラレルデー
タ群より所望とするデータのみを取込んで機器を操作す
る端末機器を含んだ側御装置と、この装置より出力され
るデータ群をシリアルデータに並−直列変換する送信回
路と、シリアルデータ群をシリアル回線側へ送信する送
信ドライバーと、この送信ドライバーの送信時の動作状
態を監視して故障を検出した場合のみ当該故障ステーシ
ョンをシリアル回線より切離すＯＮ故障検出回路と、送
信回路より出力される自己送信時のタイミング信号とＯ
Ｎ故障検出回路より出力される信号との論理積条件をと
り、論理積条件が成立した場合のみシリアルデータ群の
送信を許容し、且つ論理積条件が成立しない場合のみシ
リアルデータ群を送信を停止するインヒビット回路と、
この回路より出力される指令信号を基に当該ステーショ
ンをシリアル回線より入−切する切換スイッチとでそれ
ぞれ構成したことを特徴とするループ状データ伝送装置
。A receiving receiver receives serial data transmitted from a serial line, a receiving circuit converts serial data into parallel data, and operates the device by capturing only the desired data from the input parallel data group. a side control device including a terminal device to perform the process, a transmission circuit that converts the data group output from this device into parallel-to-serial data into serial data, a transmission driver that transmits the serial data group to the serial line side, and this transmission driver. An ON failure detection circuit that monitors the operating state during transmission and disconnects the faulty station from the serial line only when a failure is detected, and a timing signal and O during self-transmission output from the transmission circuit.
Takes the logical product condition with the signal output from the N failure detection circuit, allows the transmission of the serial data group only when the logical product condition is satisfied, and stops transmitting the serial data group only when the logical product condition does not hold. an inhibit circuit to
1. A loop-shaped data transmission device comprising a changeover switch that turns the station on and off from a serial line based on a command signal output from this circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18858881U JPS5893059U (en) | 1981-12-17 | 1981-12-17 | Loop data transmission device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18858881U JPS5893059U (en) | 1981-12-17 | 1981-12-17 | Loop data transmission device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5893059U true JPS5893059U (en) | 1983-06-23 |
Family
ID=29992273
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18858881U Pending JPS5893059U (en) | 1981-12-17 | 1981-12-17 | Loop data transmission device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5893059U (en) |
-
1981
- 1981-12-17 JP JP18858881U patent/JPS5893059U/en active Pending
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