JPS58162151A - System for transmitting information - Google Patents
System for transmitting informationInfo
- Publication number
- JPS58162151A JPS58162151A JP4588882A JP4588882A JPS58162151A JP S58162151 A JPS58162151 A JP S58162151A JP 4588882 A JP4588882 A JP 4588882A JP 4588882 A JP4588882 A JP 4588882A JP S58162151 A JPS58162151 A JP S58162151A
- Authority
- JP
- Japan
- Prior art keywords
- station
- signal
- slave station
- master station
- information
- 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
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L12/40006—Architecture of a communication node
- H04L12/40032—Details regarding a bus interface enhancer
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L12/403—Bus networks with centralised control, e.g. polling
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Small-Scale Networks (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は一対の片方向伝送路で構成された一局以上の子
局と親局の間で情報交換する方式において親局よりのポ
ーリング操作により情報交換を行なう情報転送方式に関
するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an information transfer method in which information is exchanged between one or more slave stations configured with a pair of unidirectional transmission lines and a master station, in which information is exchanged by a polling operation from the master station. It is related to the method.
従来、この種の情報転送方式として２対の伝送路を用い
たポーリング方式と呼ばれるものが実用に供されている
。このポーリング方式は親局と子局が２対の伝送路で構
成される回線に接続されており、親局は１つの子局に呼
出し符号を送出し、その子局からの状態情報を受信後次
の子局の呼出しに移り、順次全子局を走査し情報集収を
行なう方式である。Conventionally, as this type of information transfer method, a method called a polling method using two pairs of transmission paths has been put into practical use. In this polling method, a master station and a slave station are connected to a line consisting of two pairs of transmission lines, and the master station sends a call code to one slave station, and after receiving status information from that slave station, the next In this method, the mobile terminal starts calling the slave stations, and sequentially scans all slave stations to collect information.
以下図面を参照して、このポーリング方式を説明する。This polling method will be explained below with reference to the drawings.
第１図において、参照番号１０１は子局Ａの情報転送回
路、１０２は子局Ｂの情報転送回路、１０３は親局Ｃの
情報転送回路、１１１は子局Ｂの分岐回路、１１２は子
局Ｂの挿入回路、１２１〜１２４は伝送路を各々示す。In FIG. 1, reference number 101 is an information transfer circuit of slave station A, 102 is an information transfer circuit of slave station B, 103 is an information transfer circuit of master station C, 111 is a branch circuit of slave station B, and 112 is a slave station In the insertion circuit B, 121 to 124 indicate transmission paths, respectively.
第１図の転送路は図のように親局よりの呼び出し信号情
報信号送出回線（１２１，１２３）と、子局よりの情報
送出回線（１２２，１２４）の２つの独立した回線から
構成されている。As shown in the figure, the transfer path in Figure 1 consists of two independent lines: a calling signal information signal transmission line (121, 123) from the master station and an information transmission line (122, 124) from the slave station. There is.
親局Ｃより呼び出したい子局の呼び出し信号が全子局へ
伝送路１２３を通して送出される。子局Ｂでは分岐回路
１１１を通し、Ｂ局とＡ局への伝送路１２１で２分岐さ
れ親局Ｃよりの呼び出し信号は全子局が受信を行なう。A calling signal of the slave station to be called is sent from the master station C to all the slave stations through the transmission line 123. In the slave station B, the signal is branched into two by a transmission line 121 to the B station and the A station through a branch circuit 111, and the calling signal from the master station C is received by all the slave stations.
この時、該当する子局ではこの呼び出し信号により応答
を開始する。At this time, the corresponding slave station starts responding with this call signal.
子局Ａでは伝送路１２２を通し、子局Ｂでは挿入回路１
１２を通し、親局Ｃの受信回線１２４を経て、親局Ｃが
応答信号を受けとる。In the slave station A, the transmission line 122 is passed, and in the slave station B, the insertion circuit 1 is connected.
12 and the receiving line 124 of the master station C, the master station C receives the response signal.
その後、再び呼び出し２信号送出路としての伝送路１２
３を通して親局Ｃが転送する情報あるいは情報転送指令
信号を送出する。該当する子局ではこの信号を受信後、
必要な処理あるいは情報転送を開始する。この転送が終
了すると子局より転送終了信号、処理終了信号が親局Ｃ
に送出されて転送が終了する。After that, the transmission line 12 again serves as the call 2 signal transmission line.
3, the master station C transmits information to be transferred or an information transfer command signal. After the corresponding slave station receives this signal,
Initiate the necessary processing or information transfer. When this transfer is completed, the slave station sends a transfer end signal and a processing end signal to the master station C.
is sent and the transfer ends.
次に親局では他の子局と同様な操作をもってポーリング
を行ない情報を受けとる。Next, the master station performs polling and receives information in the same manner as other slave stations.
このようにポーリング方式による情報転送では全く独立
した２系統の回線が必要となる欠点を有している。As described above, information transfer using the polling method has the drawback of requiring two completely independent lines.
本発明の目的は上記欠点を解決し、１対の伝送路のみで
親局と子局間で情報転送が可能な情報転送方式を提供す
ることにある。SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned drawbacks and provide an information transfer system that allows information to be transferred between a master station and a slave station using only one pair of transmission lines.
本発明の情報転送方式は、一対の片方向伝送路で構成さ
れ少なくとも一局以上の子局と親局の間で情報交換する
情報転送方式において、各局に伝送路切り替え回路を有
することを特徴とする。The information transfer system of the present invention is configured with a pair of unidirectional transmission lines and exchanges information between at least one slave station and a master station, and is characterized in that each station has a transmission line switching circuit. do.
以下、図面を参照して本発明の詳細な説明する。Hereinafter, the present invention will be described in detail with reference to the drawings.
第２図は本発明による情報転送回路の一実施例を示した
ものである。参照番号２０１は子局穴′の情報転送回路
、２０２は子局Ｂ′の情報転送回路、２０３は親局Ｃ′
の情報転送回路、２１１〜２１４は伝送路切り替え回路
、２２１．２２２は伝送路を各々示す。切り替え回路２
１１〜２１４は初期状態として、すべて次に示すような
接点構成になっ”Ｃいる。FIG. 2 shows an embodiment of the information transfer circuit according to the present invention. Reference number 201 is the information transfer circuit of the slave station hole', 202 is the information transfer circuit of the slave station B', and 203 is the information transfer circuit of the slave station C'.
, 211 to 214 are transmission path switching circuits, and 221 and 222 are transmission paths, respectively. switching circuit 2
All of the contacts 11 to 214 have the contact configuration shown below in the initial state.
親局Ｃ′と子局Ａとの間で情報交換を行なう場合、親局
Ｃ′は子局Ａ′の呼び出し信号を送出し、切り替え回路
２１４を通り、伝送路２２２に送出される。When exchanging information between the master station C' and the slave station A, the master station C' sends out a calling signal for the slave station A', which passes through the switching circuit 214 and is sent to the transmission line 222.
その後、切り替え回路２１４は親局２０３からの信号で
切り替え回路２１４の接点がＣ−４のように切り替わる
。After that, the switching circuit 214 switches the contact point of the switching circuit 214 like C-4 in response to a signal from the master station 203.
伝送路２２２より切り替え回路２１３に到達した子局Ａ
′の呼び出し信号は切り替え回路２１３を通った後子局
Ｂ′の転送回路２０２にて受信される。Slave station A reaches the switching circuit 213 from the transmission path 222
After passing through the switching circuit 213, the calling signal of the slave station B' is received by the transfer circuit 202 of the slave station B'.
子局Ｂ′で受信された子局穴′の呼び出し信号は子局Ｂ
′の転送回路２０２で子局Ｂ′の呼び出し信号と一致し
ない為切り替え回路２１２を通し、伝送路２２１に送出
される。伝送路２２１に送出が完了すると、切り替え回
路２１２．２１３は各々Ｃ−几、Ｃ−Ｓのように切り替
えられる。伝送路２２１に送出された信号は切り換え回
路２１１を経て子局穴′の転送回路２０１に到達する。The calling signal of the slave station hole' received by the slave station B' is sent to the slave station B'
Since the signal does not match the calling signal of slave station B' in the transfer circuit 202 of ', it is sent to the transmission line 221 through the switching circuit 212. When the transmission to the transmission path 221 is completed, the switching circuits 212 and 213 are switched to C-S and C-S, respectively. The signal sent to the transmission line 221 passes through the switching circuit 211 and reaches the transfer circuit 201 of the slave station hole'.
転送回路２０１で受信された呼び出し信号は子局穴′の
信号であることが確認されると、切り替え回路２１１は
Ｃ−８のように切り替わり、ただちに子局穴′の転送回
路より応答信号が伝送路２２１へ送出され、その後、切
り替え回路２１１はＣ−Ｒ，のように切り替わる。When it is confirmed that the call signal received by the transfer circuit 201 is the signal of the slave station hole', the switching circuit 211 switches as shown in C-8, and the response signal is immediately transmitted from the transfer circuit of the slave station hole'. After that, the switching circuit 211 switches as shown in C-R.
この応答信号は親局Ｃ′のアドレス信号を含んでいる為
、他の局では全く作用せずに次々と転送される。したが
って子局Ｂ′においてはこの応答信号を受信すると、そ
のまま伝送路２２２に送出する。この送５−
出が完了すると、切り替え回路２１２．２１３は各々Ｃ
−８，Ｃ−Ｒのように切り替わる。Since this response signal includes the address signal of the master station C', it is transferred one after another without any effect on other stations. Therefore, when the slave station B' receives this response signal, it sends it out to the transmission path 222 as is. When this transmission is completed, the switching circuits 212 and 213 each switch between C and C.
-8, C-R.
伝送路２２２に送出された信号は、切り替え回路２１４
を経て親局Ｃ′の転送回路２０３に読み込まれる。そし
て子局穴′の呼び出し信号に対する応答であると判断さ
れると、再び切り替え回路２１４がＣ−８のように切り
替わり、転送指令信号を送出する。この信号は上記で述
べた子局穴′の呼び出し信号と同様な手順を経て子局穴
′に到達する。子局Ａ′ではその信号を受けた後、転送
を開始する。この転送信号は子局穴′からの応答信号と
全く同様にして親局Ｃ′に到達して、子局穴′の情報転
送を完了する。The signal sent to the transmission line 222 is sent to the switching circuit 214
The data is then read into the transfer circuit 203 of the master station C'. When it is determined that it is a response to the calling signal of the slave station hole', the switching circuit 214 switches again as shown in C-8 and sends out a transfer command signal. This signal reaches the slave station hole' through the same procedure as the calling signal for the slave station hole' described above. After receiving the signal, slave station A' starts transfer. This transfer signal reaches the master station C' in exactly the same manner as the response signal from the slave station hole', completing the information transfer of the slave station hole'.
第３図は第２図をさらに詳細に示すブロック図である。FIG. 3 is a block diagram showing FIG. 2 in more detail.
第３図はこれら一連の動作をマイクロプロセッサにより
制御したものである。FIG. 3 shows a series of these operations controlled by a microprocessor.
以上述べたように本発明によると、伝送路切り替え回路
を各局に持たせることにより、一対の伝送路のみで親局
と子局間の情報交換が可能となりかつ伝送路の有効利用
ができる。As described above, according to the present invention, by providing each station with a transmission line switching circuit, information can be exchanged between a master station and a slave station using only a pair of transmission lines, and the transmission lines can be used effectively.
６−6-
第１図は従来の情報転送回路を示すブロック図、第２図
は本発明による情報転送回路の一実施例を示すブロック
図、第３図は第２図の実施例をさらに詳細に示すブロッ
ク図である。FIG. 1 is a block diagram showing a conventional information transfer circuit, FIG. 2 is a block diagram showing an embodiment of the information transfer circuit according to the present invention, and FIG. 3 is a block diagram showing the embodiment of FIG. 2 in more detail. It is.
Claims (1)
局と親局の間で情報交換する情報転送方式において、各
局に伝送路切り替え回路を有することを特徴とする情報
転送方式。An information transfer system comprising a pair of unidirectional transmission lines and exchanging information between at least one slave station and a master station, characterized in that each station has a transmission line switching circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4588882A JPS58162151A (en) | 1982-03-23 | 1982-03-23 | System for transmitting information |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4588882A JPS58162151A (en) | 1982-03-23 | 1982-03-23 | System for transmitting information |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58162151A true JPS58162151A (en) | 1983-09-26 |
Family
ID=12731774
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4588882A Pending JPS58162151A (en) | 1982-03-23 | 1982-03-23 | System for transmitting information |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58162151A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS642492A (en) * | 1987-06-25 | 1989-01-06 | Mitsubishi Electric Corp | Remote supervisory and controlling equipment |
| JPH01280993A (en) * | 1987-09-25 | 1989-11-13 | Mitsubishi Electric Corp | Remote supervisory and controlling equipment |
| JPH03504891A (en) * | 1988-05-19 | 1991-10-24 | カドラックス・インク | Oven and cooking method using this oven |
-
1982
- 1982-03-23 JP JP4588882A patent/JPS58162151A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS642492A (en) * | 1987-06-25 | 1989-01-06 | Mitsubishi Electric Corp | Remote supervisory and controlling equipment |
| JPH01280993A (en) * | 1987-09-25 | 1989-11-13 | Mitsubishi Electric Corp | Remote supervisory and controlling equipment |
| JPH03504891A (en) * | 1988-05-19 | 1991-10-24 | カドラックス・インク | Oven and cooking method using this oven |
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