JPS594358A - Data transmitter - Google Patents
Data transmitterInfo
- Publication number
- JPS594358A JPS594358A JP11329682A JP11329682A JPS594358A JP S594358 A JPS594358 A JP S594358A JP 11329682 A JP11329682 A JP 11329682A JP 11329682 A JP11329682 A JP 11329682A JP S594358 A JPS594358 A JP S594358A
- Authority
- JP
- Japan
- Prior art keywords
- transmission
- master station
- slave stations
- station
- transmission lines
- 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
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
Landscapes
- Small-Scale Networks (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
Abstract
Description
【発明の詳細な説明】
（１）発明の分野
この発明は、ポーリングによって主局と従局との間でデ
ータの通信を行うようなデータ伝送装置に関するもので
ある。DETAILED DESCRIPTION OF THE INVENTION (1) Field of the Invention The present invention relates to a data transmission device that communicates data between a master station and a slave station by polling.
（２）従来技術
従局として９例えば温度等のプロセス量を収集し、主局
からのポーリング信号に応じて主局へ伝送する入力処理
装置、主局からのポーリング信号によるデータを受信し
出力する出力処理装置等がある。そして、これら従局は
主局からの伝送線に接続されており、その延長距離は２
通信の関係上。(2) Conventional technology As a slave station, an input processing device collects process variables such as temperature and transmits them to the master station in response to a polling signal from the master station, and an output that receives and outputs data based on the polling signal from the master station. There are processing equipment, etc. These slave stations are connected to the transmission line from the master station, and the extension distance is 2
Regarding communication.
所定の長さまでとされている。It is limited to a specified length.
このため、多数の従局を接続することは困難であり、又
、異なった高速、低速のポーリング周期を必閥とする機
器を従局とすることは困難である等の問題点があった。Therefore, it is difficult to connect a large number of slave stations, and it is also difficult to use devices that require different high-speed and low-speed polling cycles as slave stations.
（３）発明の目的
この発明の目的は２以上の点に鑑み、多数の種々の従局
を接続することを可能としたデータ伝送装置を提供する
ことである。(3) Purpose of the Invention In view of two or more points, the purpose of the present invention is to provide a data transmission device that makes it possible to connect a large number of various slave stations.
（４）発明の実施例
第１図は、この発明の一実施例を示す構成説明図である
。(4) Embodiment of the Invention FIG. 1 is an explanatory diagram showing an embodiment of the invention.
図において、１は伝送を管理する主局、 ｔｌ、１２゜
・ｔｋは複数本の伝送線、 １１，１２．・、Ｉｎ、２
１，２２゜−，２ｍ、ｋｌ、に２．・−・、ｋｐは各伝
送線１１． ｔ２ 、 ・ｔｋに接続される入出力処理
を行う従局である。In the figure, 1 is a main station that manages transmission, tl, 12° and tk are multiple transmission lines, 11, 12.・,In,2
1,22°-, 2m, kl, 2. ..., kp is each transmission line 11. t2, ・A slave station connected to tk that performs input/output processing.
この場合、主局１からのポーリングにより、各伝送ｍ
ｔｔ ＋ ｔ２ｔ・・・、１にの従局１１ 、１２・・
・＋ｋｐは主局とデータの授受を行い２例えば伝送線ｚ
ｉの従局１１のデータは、主局１を介し伝送線ｔ２の従
局２ｍに出力が可能であり、又、伝送線六噛局２１のデ
ータは主局１を介し、伝送＃１Ｉｔｋの従局ｋｐへ出力
可能とされている。In this case, each transmission m
tt + t2t..., slave stations 11, 12...
・+kp exchanges data with the main station 2 For example, transmission line z
The data of the slave station 11 of i can be output to the slave station 2m of the transmission line t2 via the master station 1, and the data of the transmission line six-bit station 21 can be output to the slave station kp of transmission #1Itk via the master station 1. It is possible to output.
なお伝送距離は、各伝送線／−１、１２、・・・、ｔｋ
と主局との距離が各々所定の最長距離１０以内であれば
よいので、各伝送線の距離は任意の２本の距離が２１０
以内であればよいので、制御される伝送線の距離は２倍
まで拡張できる。The transmission distance is each transmission line/-1, 12,..., tk
Since the distance between the main station and the main station only needs to be within the predetermined maximum distance of 10, the distance between each transmission line is 210.
Since the length of the controlled transmission line can be extended up to twice the distance.
又、ポーリング周期を、すべての伝送線について同一と
すれば、システム全体のスピードが確定し、出力データ
は常に一定のものとなる。Furthermore, if the polling period is the same for all transmission lines, the speed of the entire system is determined and the output data is always constant.
又、ポーリング周期を、伝送線毎に互いに異なったもの
とすれば、高速処理が必要なもの、そうでないもの等１
種々のスピードをとることができ。Also, if the polling period is made different for each transmission line, it will be possible to differentiate between those that require high-speed processing and those that do not.
Can take various speeds.
部分的な高速化が可能となる。Partial speed-up is possible.
更に、ポーリング周期を、伝送線毎に互いに同一のもの
、異なったものを混在させるようにすれば、用途別の伝
送を主局で管理でき１部分的に必要となる異種伝送線の
従局間の伝送もできる。Furthermore, if the polling period is made to be the same or different for each transmission line, the master station can manage the transmission for each purpose, and it is possible to control the transmission between slave stations of different types of transmission lines, which is partially necessary. Transmission is also possible.
（５）発明の要約
以上述べたように、この発明は、主局と従局間を伝送線
により接続しポーリング周期によって通信を行う装置に
おいで、複数の伝送線に接続された従局間の伝送の管理
も主局で行うようにしたデータ伝送装置である。(5) Summary of the Invention As described above, the present invention provides a device that connects a master station and slave stations via a transmission line and performs communication based on polling cycles. It is a data transmission device that is also managed by the main station.
（６）発明の効果
主局を介して異なった伝送線の従局間の伝送管理を行っ
ているので、伝送線の総延長距離を２倍とすることがで
き、従局の接続台数を大幅に増大させることができる。(6) Effects of the invention Since transmission management between slave stations on different transmission lines is performed via the master station, the total length of the transmission line can be doubled, and the number of connected slave stations can be greatly increased. can be done.
又、異なった伝送線の従局間のデータの授受を可能とし
でいるので、システム全体の拡張性、用途別適合性等を
向上させることができる。又、ポーリング周期を種々の
ものとすることにより、用途に応じたデータの更新の高
速化等も可能となる。Furthermore, since it is possible to exchange data between slave stations on different transmission lines, it is possible to improve the expandability of the entire system and its suitability for each application. Furthermore, by varying the polling period, it is possible to speed up data updates depending on the application.
第１図は、この発明の一実施例を示す構成説明図である
。
１・・・主局、１１〜ｋｐ・・・従局、ｔｌ−１ｋ・・
・伝送線特許出願人 株式会社 千野製作所FIG. 1 is a configuration explanatory diagram showing an embodiment of the present invention. 1...Main station, 11~kp...Slave station, tl-1k...
・Transmission line patent applicant Chino Seisakusho Co., Ltd.
Claims (1)
局との間の通信を主局からのポーリング信号によって行
う装置において、前記主局は複数の伝送線をもち、異な
る伝送線に接続された従局間の伝送をも管理することを
特徴とするデータ伝送装置。 ２、 前記複数の伝送線のポーリング周期を互いに同一
としたことを特徴とする特許請求の範囲第１項記載のデ
ータ伝送装置。 ３、 前記複数の伝送線のポーリング周期を互いに異な
るものとしたことを特徴とする特許請求の範囲第１項記
載のデータ伝送装置。 ４、 前記複数の伝送線のポーリング周期を互いに同一
のもの、異なるものを混在させたことを特徴とする特許
請求の範囲第１項記載のデータ伝送装置。[Claims] 1. A device that performs communication between a master station that manages transmission and slave stations connected to a common transmission line using a polling signal from the master station, wherein the master station connects a plurality of transmission lines. A data transmission device characterized in that it also manages transmission between slave stations connected to different transmission lines. 2. The data transmission device according to claim 1, wherein the polling cycles of the plurality of transmission lines are the same. 3. The data transmission device according to claim 1, wherein the polling cycles of the plurality of transmission lines are different from each other. 4. The data transmission device according to claim 1, wherein the plurality of transmission lines have polling cycles that are the same or different.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11329682A JPS594358A (en) | 1982-06-30 | 1982-06-30 | Data transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11329682A JPS594358A (en) | 1982-06-30 | 1982-06-30 | Data transmitter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS594358A true JPS594358A (en) | 1984-01-11 |
| JPH0230618B2 JPH0230618B2 (en) | 1990-07-09 |
Family
ID=14608601
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11329682A Granted JPS594358A (en) | 1982-06-30 | 1982-06-30 | Data transmitter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS594358A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61170162A (en) * | 1985-01-24 | 1986-07-31 | Hitachi Ltd | Signal transmission system of polling selecting system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5454541A (en) * | 1977-10-11 | 1979-04-28 | Hitachi Ltd | Multi-line control unit |
| JPS54142902A (en) * | 1978-04-28 | 1979-11-07 | Hitachi Ltd | Communication system using polling emulator |
-
1982
- 1982-06-30 JP JP11329682A patent/JPS594358A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5454541A (en) * | 1977-10-11 | 1979-04-28 | Hitachi Ltd | Multi-line control unit |
| JPS54142902A (en) * | 1978-04-28 | 1979-11-07 | Hitachi Ltd | Communication system using polling emulator |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61170162A (en) * | 1985-01-24 | 1986-07-31 | Hitachi Ltd | Signal transmission system of polling selecting system |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0230618B2 (en) | 1990-07-09 |
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