JPS607421B2 - data transmission equipment - Google Patents
data transmission equipmentInfo
- Publication number
- JPS607421B2 JPS607421B2 JP7190276A JP7190276A JPS607421B2 JP S607421 B2 JPS607421 B2 JP S607421B2 JP 7190276 A JP7190276 A JP 7190276A JP 7190276 A JP7190276 A JP 7190276A JP S607421 B2 JPS607421 B2 JP S607421B2
- Authority
- JP
- Japan
- Prior art keywords
- terminal
- data transmission
- instructing
- switch
- release
- 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.)
- Expired
Links
Landscapes
- Small-Scale Networks (AREA)
Description
【発明の詳細な説明】
この発明は、ボーリング方式を用いているデータ伝送装
置に関し特に端末切り放しを簡単に行なう有用な手段を
提供するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a data transmission device using a boring method, and particularly provides a useful means for easily disconnecting a terminal.
データ収集システム、ビル管理システムなどにおいては
、多くの端末局と１つの中央装置とからなるデータ伝送
システムが構成されているが、このようなシステムにお
いてはボーリング方式が一般に用いられる。In data collection systems, building management systems, and the like, data transmission systems are constructed of many terminal stations and one central device, and a boring method is generally used in such systems.
上記の様なボーリング方式を用いるデータ伝送システム
においては、端末局の障害、端末局の未実装などにより
特定の端末にはボーリングを停止し、その端末局をデー
タ伝送システムよりソフト的に切り放す必要が発生する
。この端末の切り放しは他の端末局へのボーリングを停
止させずに容易に行なえなければならず、また伝送シス
テムへの復帰も容易に行えなければならない。この発明
は上記の点にかんがみてなされたもので、ボーリングの
停止を指示する装置を中央装置に付加し、ボーリングの
停止および復帰を容易に行なえるようにしたものである
。In a data transmission system that uses the boring method as described above, it is necessary to stop boring for a specific terminal due to a terminal station failure or non-installation of a terminal station, and to disconnect that terminal station from the data transmission system using software. occurs. This terminal must be easily disconnected without stopping boring to other terminal stations, and it must also be easy to return to the transmission system. The present invention has been made in view of the above-mentioned points, and a device for instructing to stop boring is added to the central device, thereby making it possible to easily stop and return to boring.
以下、図面を用いて本発明の一実施例を説明する。第１
図は本発明の一実施例におけるデータ伝送システムを説
明するための図であり、図中、１は中央装置、２は回線
、３は端末切り放し（すなわち、ボーリング停止）を指
示する制御装置、４は端末局を示す。An embodiment of the present invention will be described below with reference to the drawings. 1st
The figure is a diagram for explaining a data transmission system according to an embodiment of the present invention. In the figure, 1 is a central device, 2 is a line, 3 is a control device that instructs to disconnect the terminal (that is, stop bowling), and 4 is a diagram for explaining a data transmission system according to an embodiment of the present invention. indicates a terminal station.
第２図は第１図における制御装置３の一構成例を示すも
のであり、図中５はアドレスデコーダ、ＳＷ１・・・・
・・ＳＷｎは各端末局に１つつつ対応し、端末切り放し
を指示するスイッチである。第３図は、第１図における
制御装置３のパネルの一例を示すものであり、各端末局
に１対１で対応するスイッチが設けられている。以下図
面に基づいて動作を説明する。中央装置１は中央装置内
に持っている端末局の端末番号のファイルから１つの端
末局の端末番号を取り出す。中央装置１は上記端末番号
を信号線５を経由し端末切り放しを指示する制御装置３
へ出力する。制御装置３は入力された端末番号に対応す
るスイッチの状態を信号線６を経由し中央装置１へ出力
する。中央装置１は信号線６の信号に基づいて次の動作
を決定する。信号線６が端末切り放しを指示していない
状態（たとえばＨレベル）であるなら、ボーリング文を
回線２へ送信し応答文の受信・応答文の処理を行なう。
信号線６が端末切り放しを指示している状態（たとえば
Ｌレベル）であるなら、ボーリング文は回線２へ送出せ
ず、対応する端末局に対する処理は終了する。中央装置
１は上記の動作を繰り返し行なう。この様に本発明のデ
ータ伝送装置では、極めて容易に端末のソフト的な切り
放し、復帰を実現することが出きるので「大きな利用価
層がある。FIG. 2 shows an example of the configuration of the control device 3 in FIG. 1, where 5 is an address decoder, SW1...
...SWn is a switch that corresponds to each terminal station and instructs to disconnect the terminal. FIG. 3 shows an example of a panel of the control device 3 in FIG. 1, and a switch is provided in one-to-one correspondence with each terminal station. The operation will be explained below based on the drawings. The central device 1 extracts the terminal number of one terminal station from a file of terminal numbers of terminal stations held within the central device. The central device 1 transmits the terminal number via the signal line 5 to the control device 3 which instructs to release the terminal.
Output to. The control device 3 outputs the state of the switch corresponding to the input terminal number to the central device 1 via the signal line 6. The central device 1 determines the next operation based on the signal on the signal line 6. If the signal line 6 is in a state where it is not instructing to disconnect the terminal (for example, at H level), the boring message is transmitted to the line 2, and the response message is received and processed.
If the signal line 6 is in a state instructing disconnection of the terminal (for example, L level), the boring statement is not sent to the line 2, and the processing for the corresponding terminal station ends. The central device 1 repeatedly performs the above operations. As described above, with the data transmission device of the present invention, it is possible to extremely easily disconnect and restore a terminal using software, so there is a large utility value.
たとえば、端末局を順次設置してゆく場合などでは端末
局が設置される毎に中央装置では端末切り放しを指示す
る装置のパネル上のスイッチを解除するだけで済む。ま
た、端末局の修理などの場合、その端末局だけボーリン
グ停止を容易に行なえる。For example, when terminal stations are installed one after another, the central device only needs to release a switch on the panel of the device that instructs disconnection of the terminal each time a terminal station is installed. Furthermore, when a terminal station is being repaired, boring can be easily stopped for that terminal station only.
第１図は本発明のデータ伝送装置の構成を示すフロック
図、第２図は端末切り放しを指示する装置の一構成例を
示す結線図、第３図は端末切り放しを指示する装置のパ
ネルの外観の一例を示す正面図である。
１・・・・・・中央装置、２・・・・・・回線、３・・
・・・・端末切り放しを指示する装置、４・・・・・・
端末局、５・・・・・・アドレスデコーダ。
第１図
第２図
第３図Figure 1 is a block diagram showing the configuration of a data transmission device of the present invention, Figure 2 is a wiring diagram showing an example of the configuration of a device that instructs terminal disconnection, and Figure 3 is an external appearance of a panel of the device that instructs terminal disconnection. It is a front view showing an example. 1...Central device, 2...Line, 3...
...device for instructing terminal disconnection, 4...
Terminal station, 5...address decoder. Figure 1 Figure 2 Figure 3
Claims (1)
て、各端末局に１対１で対応し、対応する端末局が端末
切り放しを指示している状態と端末切り放しを指示して
いない状態のいずれかを示すスイツチを備え、指示され
た端末番号の前記スイツチの状態を出力可能な制御装置
を中央装置に設けることにより、前記中央装置は各端末
へのポーリングを実施する以前に制御装置から対応する
前記スイツチの状態を出力せしめ、前記スイツチの状態
が端末切り放しを指示していない状態ならば該当端末へ
のポーリングを実施し、端末切り放しを指示している状
態ならば該当端末へのポーリングを停止することを特徴
とするデータ伝送装置。1 In a data transmission system using the polling method, a switch that corresponds to each terminal station on a one-to-one basis and indicates whether the corresponding terminal station is instructing terminal release or not instructing terminal release. By providing the central device with a control device capable of outputting the state of the switch of the designated terminal number, the central device can check the state of the corresponding switch from the control device before polling each terminal. is output, and if the state of the switch is not instructing to release the terminal, it polls the terminal, and if it is instructing to release the terminal, it stops polling the terminal. data transmission equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7190276A JPS607421B2 (en) | 1976-06-17 | 1976-06-17 | data transmission equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7190276A JPS607421B2 (en) | 1976-06-17 | 1976-06-17 | data transmission equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS52154319A JPS52154319A (en) | 1977-12-22 |
| JPS607421B2 true JPS607421B2 (en) | 1985-02-25 |
Family
ID=13473925
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7190276A Expired JPS607421B2 (en) | 1976-06-17 | 1976-06-17 | data transmission equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS607421B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0497115U (en) * | 1991-01-18 | 1992-08-21 | ||
| JPH0532651Y2 (en) * | 1986-06-26 | 1993-08-20 |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4667321A (en) * | 1983-11-14 | 1987-05-19 | Tandem Computers Incorporated | Input-output multiplexer-demultiplexer communications channel |
-
1976
- 1976-06-17 JP JP7190276A patent/JPS607421B2/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0532651Y2 (en) * | 1986-06-26 | 1993-08-20 | ||
| JPH0497115U (en) * | 1991-01-18 | 1992-08-21 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS52154319A (en) | 1977-12-22 |
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