JPH0216628U - - Google Patents
Info
- Publication number
- JPH0216628U JPH0216628U JP9551688U JP9551688U JPH0216628U JP H0216628 U JPH0216628 U JP H0216628U JP 9551688 U JP9551688 U JP 9551688U JP 9551688 U JP9551688 U JP 9551688U JP H0216628 U JPH0216628 U JP H0216628U
- Authority
- JP
- Japan
- Prior art keywords
- connectors
- cables
- wire communication
- terminating resistor
- communication unit
- 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
- 238000003780 insertion Methods 0.000 claims 1
- 230000037431 insertion Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Dc Digital Transmission (AREA)
- Small-Scale Networks (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Description
第１図は本考案にかかる２線式通信ユニツトの
構成図、第２図は本考案にかかる別の２線式通信
ユニツトの構成図、第３図は２線式通信システム
の説明図である。
１……２線式通信ユニツト、１ｂ……ドライバ
／レシーバ回路、１ｃ，１ｄ……コネクタ、１ｅ
，１ｆ……ケーブル、１ｇ……スイツチ、１ｈ…
…終端抵抗、２，３……２線式の外部ケーブル。
Fig. 1 is a block diagram of a two-wire communication unit according to the present invention, Fig. 2 is a block diagram of another two-wire communication unit according to the present invention, and Fig. 3 is an explanatory diagram of a two-wire communication system. . 1... Two-wire communication unit, 1b... Driver/receiver circuit, 1c, 1d... Connector, 1e
, 1f...cable, 1g...switch, 1h...
...Terminal resistor, 2, 3...2-wire external cable.
Claims (1)
ーブルを介してデータの授受を行う２線式通信ユ
ニツトにおいて、 ２線式通信ケーブルを構成する外部ケーブルの
コネクタが結合される２つのコネクタと、該コネ
クタ間を内部的に接続する２本のケーブルと、該
２本のケーブルに接続される信号授受用のドライ
バ／レシーバ回路と、２本のケーブル間にスイツ
チを介して接続される終端抵抗を有することを特
徴とする２線式通信ユニツト。 (2) 前記各コネクタに外部ケーブルのコネクタ
が結合されているかを検出するセンサと、一方の
コネクタのみに結合されている場合には前記スイ
ツチを動作させて終端抵抗をケーブル間に挿入す
る終端抵抗挿入部を有することを特徴とする実用
新案登録請求の範囲第１項記載の２線式通信ユニ
ツト。[Scope of Claim for Utility Model Registration] (1) In a two-wire communication unit that sends and receives data via a two-wire communication cable with a terminating resistor connected at both ends, Two connectors to which the connectors are coupled, two cables that connect internally between the connectors, a driver/receiver circuit for signal exchange connected to the two cables, and a circuit between the two cables. A two-wire communication unit characterized by having a terminating resistor connected via a switch. (2) A sensor that detects whether an external cable connector is connected to each of the connectors, and a terminating resistor that operates the switch and inserts a terminating resistor between the cables if it is connected to only one connector. A two-wire communication unit according to claim 1, characterized in that it has an insertion portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9551688U JPH0216628U (en) | 1988-07-19 | 1988-07-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9551688U JPH0216628U (en) | 1988-07-19 | 1988-07-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0216628U true JPH0216628U (en) | 1990-02-02 |
Family
ID=31320183
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9551688U Pending JPH0216628U (en) | 1988-07-19 | 1988-07-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0216628U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04316441A (en) * | 1991-04-16 | 1992-11-06 | Daiwa Seiko Inc | Fishing rod |
-
1988
- 1988-07-19 JP JP9551688U patent/JPH0216628U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04316441A (en) * | 1991-04-16 | 1992-11-06 | Daiwa Seiko Inc | Fishing rod |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS6416117U (en) | ||
| JPH01107255U (en) | ||
| JPH0216628U (en) | ||
| JPS62138259U (en) | ||
| JPH0272033U (en) | ||
| JPS62131382U (en) | ||
| JPH01121285U (en) | ||
| JPS59176771U (en) | robot | |
| JPH01117083U (en) | ||
| JPS6358477U (en) | ||
| JPS623140U (en) | ||
| JPS59157348U (en) | Vehicle optical transmission equipment | |
| JPS62177175U (en) | ||
| JPH01171138U (en) | ||
| JPH0313524U (en) | ||
| JPH0384661U (en) | ||
| JPS61148871U (en) | ||
| JPH0246387U (en) | ||
| JPS6459788A (en) | Bus connector | |
| JPS6428041U (en) | ||
| JPH03115451U (en) | ||
| JPH01126744U (en) | ||
| JPS6352330U (en) | ||
| JPH0356919U (en) | ||
| JPS61116451U (en) |