JPH0398547U - - Google Patents
Info
- Publication number
- JPH0398547U JPH0398547U JP766890U JP766890U JPH0398547U JP H0398547 U JPH0398547 U JP H0398547U JP 766890 U JP766890 U JP 766890U JP 766890 U JP766890 U JP 766890U JP H0398547 U JPH0398547 U JP H0398547U
- Authority
- JP
- Japan
- Prior art keywords
- communication control
- board
- register
- control board
- flag
- 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
- 238000010586 diagram Methods 0.000 description 1
Description
第１図は本考案を実施した通信制御ボードの構
成を表すブロツク図である。
１０……通信制御ボード、１１……プロセツサ
ＣＰＵ、１２……ドライバ、１３……レシーバ、
１４……レジスタ、１５……デコーダ、１６……
リレー回路、１７……タツプ、Ｃ……幹線ケーブ
ル、Ｌ……通信ライン、Ｌ１，Ｌ２……ライン、
Ｓ１，Ｓ２，Ｓ３……接点、Ｔ……トランス、Ｒ
……ターミネーシヨン用抵抗。
FIG. 1 is a block diagram showing the configuration of a communication control board embodying the present invention. 10... Communication control board, 11... Processor CPU, 12... Driver, 13... Receiver,
14...Register, 15...Decoder, 16...
Relay circuit, 17...Tap, C...Main cable, L...Communication line, L1, L2...Line,
S1, S2, S3...Contact, T...Transformer, R
...Resistance for termination.
Claims (1)
を有するコンピユータ・ステーシヨンに設けられ
、他のコンピユータ・ステーシヨンと幹線ケーブ
ルを介して接続して通信動作に関与する通信制御
ボードにおいて、エクスターナル・ループ・バツ
ク・テストが指定されたことを表すフラグを格納
するレジスタと、このレジスタに前記フラグが設
定された場合に当該通信制御ボードを前記幹線ケ
ーブルから切り離すスイツチ回路とを設けたこと
を特徴とする通信制御ボード。 An external loop back is a communication control board installed in a computer station that has a processor board and several input/output boards, and is connected to other computer stations via a trunk cable to participate in communication operations. - A communication control characterized by providing a register that stores a flag indicating that a test has been designated, and a switch circuit that disconnects the communication control board from the main cable when the flag is set in this register. board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP766890U JPH0398547U (en) | 1990-01-30 | 1990-01-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP766890U JPH0398547U (en) | 1990-01-30 | 1990-01-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0398547U true JPH0398547U (en) | 1991-10-14 |
Family
ID=31511323
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP766890U Pending JPH0398547U (en) | 1990-01-30 | 1990-01-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0398547U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100811104B1 (en) * | 2007-03-05 | 2008-03-07 | 이열 | Scissors shape nail cutter |
-
1990
- 1990-01-30 JP JP766890U patent/JPH0398547U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100811104B1 (en) * | 2007-03-05 | 2008-03-07 | 이열 | Scissors shape nail cutter |
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