JPS63131745A - Transmitting equipment - Google Patents
Transmitting equipmentInfo
- Publication number
- JPS63131745A JPS63131745A JP27813586A JP27813586A JPS63131745A JP S63131745 A JPS63131745 A JP S63131745A JP 27813586 A JP27813586 A JP 27813586A JP 27813586 A JP27813586 A JP 27813586A JP S63131745 A JPS63131745 A JP S63131745A
- Authority
- JP
- Japan
- Prior art keywords
- polling
- storage device
- data
- station
- transmission
- 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
- 230000005540 biological transmission Effects 0.000 claims abstract description 36
- 238000010586 diagram Methods 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 1
Landscapes
- Small-Scale Networks (AREA)
Abstract
Description
【発明の詳細な説明】
〔画業上の利用分野〕
この発明は単一の1次局と複数の2次局との間でデータ
伝送を行う場合、1次局から2次局に対しポーリングに
よって順次送信を勧誘し、送信を勧誘された2次局だζ
すが1次局に対するデータ伝送の権利を得る伝送装置に
関するものである。[Detailed Description of the Invention] [Field of Application in the Industry] When data is transmitted between a single primary station and a plurality of secondary stations, the present invention transmits data from the primary station to the secondary stations by polling. It is a secondary station that sequentially solicits transmissions and is solicited to transmitζ
This relates to a transmission device that obtains the right to transmit data to a primary station.
第2図は従来のこの種の装置の構成を示すブロック図で
、図において(1)は1次局P 、 (21)、(2
2)。FIG. 2 is a block diagram showing the configuration of a conventional device of this type. In the figure, (1) is the primary station P, (21), (2
2).
(23)、−(2n)はそれぞれ2次局S。I S、
、S2゜・・−Sn、 +31は通信回線、(31)
、 (32) 、 (33) 。(23) and -(2n) are secondary stations S, respectively. IS,
, S2゜...-Sn, +31 is a communication line, (31)
, (32), (33).
・・・(3n)はそれぞれ通信回線の各分岐路である。...(3n) are respective branch paths of the communication line.
第2図に示すように構成された従来のシステムでは、1
次局(1)はあらかじめ定めた順序でポーリング信号を
各2次局へ順次送信し、このポーリング信号を受けた2
次局のうち1次局への送信データを持つ2次局はその送
信データを1次局へ送信し、1次局への送信データを持
ってない2次局はその旨を1次局へ応答する。したがっ
て単一の1次局とこれに属するすべての2次局(21)
、 (22)(23’)、・・・(2n)との間の通
信回線(3)は1回線あればよく、この1回線の通信回
線にすべての2次局が各分岐路(31) 、 (32)
、 (33) 、・・・(3n)を経て並列に接続さ
れていて、1次局(1)から送出されるポーリング信号
はすべての2次局に到達するが、そのポーリング信号に
よって自局が宛先として指定されている局だけが、その
ポーリング信号に対応した動作をする。このように構成
された通信回線網をマルチドロップ回線という。In the conventional system configured as shown in FIG.
The next station (1) sequentially transmits a polling signal to each secondary station in a predetermined order, and the second station that receives this polling signal
Among the next stations, a secondary station that has data to send to the primary station transmits that data to the primary station, and a secondary station that does not have data to send to the primary station notifies the primary station of this fact. respond. Therefore, a single primary station and all secondary stations belonging to it (21)
, (22), (23'), ... (2n) need only one communication line (3), and all secondary stations are connected to each branch path (31) on this one communication line. , (32)
, (33) , ... (3n) are connected in parallel, and the polling signal sent from the primary station (1) reaches all the secondary stations, but the polling signal causes the local station to Only the station designated as the destination takes action in response to the polling signal. A communication line network configured in this way is called a multidrop line.
従来の装置は以上のように構成されており、ポーリング
の送信順序はあらかじめ定められており、かつ多くの場
合は1回のポーリングにおいて送信できるメツセージの
最大の長さには制限があり、1次局へ送信すべきデータ
が多量に発生した2次局では1回のポーリングによる送
信を終った後C:次の送信権を得るのは1次局が他のす
べての2次局に対してポーリング信号を送出した後にな
るという問題点があった。Conventional devices are configured as described above, and the polling transmission order is predetermined, and in many cases there is a limit to the maximum length of a message that can be transmitted in one polling, and the primary After a secondary station that has a large amount of data to send to the station completes transmission by polling once, the primary station obtains the next transmission right by polling all other secondary stations. There was a problem in that it occurred after the signal was sent.
この発明は上記のような問題点を解決するためになされ
たもので、1次局に送信すべきデータな持っていると推
定される2次局に対してはポーリング信号の送信順位を
早くすることができる伝送装置を得ることを目的として
いる。This invention was made to solve the above-mentioned problems, and it speeds up the transmission order of polling signals to secondary stations that are estimated to have data that should be transmitted to the primary station. The aim is to obtain a transmission device that can
この発明では前回のポーリングにおいてデータを送出し
たか否かの事実を各2次局に対応して記憶しておき、前
回のポーリングにおいてデータを送出した2次局には送
出すべきデータがなお残っている確率が大きいと考え、
その2次局に対するポーリングの順序を早くするように
した。In this invention, the fact of whether or not data was sent in the previous polling is stored for each secondary station, and the secondary stations that sent data in the previous polling still have data to be sent. I think there is a high probability that
The polling order for the secondary station was made faster.
この発明によれば、−たんデータ送信を行ったzvC局
には次の送信機会が早く与えられるため、送信すべきデ
ータが時間的に集中して発生した2次局におけるデータ
伝送処理が効率的に行われる。According to this invention, the next transmission opportunity is given to the zvC station that has transmitted the data quickly, so that the data transmission processing at the secondary station where the data to be transmitted is concentrated in time is efficient. It will be held on.
以下この発明の実施例を図面について説明する。 Embodiments of the present invention will be described below with reference to the drawings.
第1図はこの発明の一実施例を示すブロック図で第2図
と同一符号は同−又は相当部分を示し、(4)は1次局
(1)内に設けられた2次局送信実績記憶装置、(5)
は1次局(1)内に設けられたポーリング送信型記憶装
置であり、(40)は送信実績記憶装置(4)の内容の
一例を示すフォーマット図、(50)はポーリング送信
型記憶装置(5)の内容の一例を示すフォーマット図で
ある。FIG. 1 is a block diagram showing an embodiment of the present invention. The same reference numerals as in FIG. 2 indicate the same or corresponding parts, and (4) shows the transmission results of the secondary station installed in the primary station (1). storage device, (5)
is a polling transmission type storage device provided in the primary station (1), (40) is a format diagram showing an example of the contents of the transmission record storage device (4), and (50) is a polling transmission type storage device ( 5) is a format diagram showing an example of the contents.
次に動作について説明する。ある時点においてポーリン
グを行った時(この場合のポーリング類はどのような順
序であってもよいが、仮にSO+51tSz+ Sa+
−8n−t r Snの順であったとする)Sl。Next, the operation will be explained. When polling is performed at a certain point (in this case, polling may be done in any order, but if SO+51tSz+Sa+
-8n-t r Sn) Sl.
S3及び5n−1からだけデータ送信があった場合、2
次局送信実績記憶装置(41にはフォーマット図(40
)に示すようなデータの書込みを行い、この内容に従い
、あらかじめ定めた規則によってポーリング送信型記憶
装置(5)への誉込みを行う。上記あらかじめ定めた規
則として最も簡単な規則、すなわち2次局送信実績記憶
装ft+41で「1」が書込まれている2次局を「0」
が書込まれている2次局よりもポーリング順位を先にす
るという規則を用いてポーリング送信型記憶装置(5)
への書込みを行なえば、その内容はフォーマット図(5
0)に示すようになる。1次局(1)はポーリング送信
型記憶装置(5)に記憶された順位に従って次回のポー
リングを行う。したがって、前回のポーリングにおいて
データを送出し、今回のポーリングにおいても送出デー
タがあると推定される2次局に対しポーリングが早く行
なわれることになる。If there is data transmission only from S3 and 5n-1, 2
Next station transmission record storage device (41 has a format diagram (40)
), and according to this content, data is written to the polling transmission type storage device (5) according to predetermined rules. The simplest rule among the above predetermined rules is that the secondary station where "1" is written in the secondary station transmission record storage device ft+41 is set to "0".
A polling transmission type storage device (5) using the rule that the polling priority is given first to the secondary station where the
If you write to , the contents will be shown in the format diagram (5
0). The primary station (1) performs the next polling according to the ranking stored in the polling transmission type storage device (5). Therefore, polling is performed quickly for secondary stations that sent out data in the previous polling and are estimated to have data to send out in the current polling as well.
なお、上述の例では、2次局送信実績記憶装置(4)の
内容からポーリング送信型記憶装置(5)を作成する規
則の一例について説明したが、他のどのような規則を用
いてポーリング送信型記憶装置(5)を作成してもよい
。たとえばポーリングのサイクルを第1及び第2の2サ
イクルに分け、第1サイクルでは第1図のフォーマット
図(40)の上らんに示す順序のように固定した順位で
ポーリングを行ない、七の′結果の実績を2次局送信実
績記憶装置(4)に書込んだ後、第2サイクルでは2次
局送信実績記憶gc[14+に「1」が書込まれている
2次局だCすに対しポーリングを行ない、これが終ると
再び第1サイクルのポーリングに戻るように制御するこ
ともできる。In addition, in the above example, an example of the rule for creating the polling transmission type storage device (5) from the contents of the secondary station transmission record storage device (4) was explained, but what other rules can be used to create the polling transmission type storage device (5)? A type store (5) may also be created. For example, the polling cycle is divided into two cycles, the first and second cycles, and in the first cycle, polling is performed in a fixed order as shown at the top of the format diagram (40) in Figure 1. After writing the results of ``1'' to the secondary station transmission result storage device (4), in the second cycle, for the secondary station C for which "1" is written in the secondary station transmission result memory gc[14+ It is also possible to carry out polling and control to return to the first cycle of polling once it is finished.
以上のようにこの発明によれば、送信すべきデータを持
っていると推定される2次局に対してボIJング信号を
優先的に送信することができ、データ伝送処理の効率を
向上することができる。As described above, according to the present invention, it is possible to preferentially transmit a calling signal to a secondary station that is estimated to have data to be transmitted, thereby improving the efficiency of data transmission processing. be able to.
第1図はこの発明の一実施例を示すブロック図、第2図
は従来の装置を示すブロック図。
(1)は1次局、(21) 、 (22) 、 (23
) 、・・・(2n)はそれぞれ2次局、(3)は通信
回線、(4)は2次局送信実績記憶fctl、f51は
ポーリング送信類記憶装置。
尚、図中同一符号は同一または相当する部分を示す。FIG. 1 is a block diagram showing an embodiment of the present invention, and FIG. 2 is a block diagram showing a conventional device. (1) is the primary station, (21), (22), (23
), . . . (2n) are secondary stations, (3) are communication lines, (4) are secondary station transmission record storage fctl, and f51 is a polling transmission type storage device. Note that the same reference numerals in the figures indicate the same or corresponding parts.
Claims (1)
間でデータ伝送を行う場合、上記1次局から上記複数の
2次局に対しポーリングによって順次送信を勧誘し、送
信を勧誘された2次局だけが上記1次局に対する送信の
権利を得る伝送装置において、 上記1次局側に備えられ、ポーリング送信順を記憶する
ポーリング送信順記憶装置、 上記1次局側に備えられ、前回のポーリングに際しデー
タを送出したか否かの事実を各2次局に対応して記憶す
る2次局送信実績記憶装置、この2次局送信実績記憶装
置の内容に対応して、あらかじめ定めた規則に従い上記
ポーリング送信順記憶装置の内容を修正する手段を備え
たことを特徴とする伝送装置。[Claims] When data is transmitted between a single primary station and a plurality of secondary stations belonging to the primary station, the primary station transmits data to the plurality of secondary stations by polling. In a transmission device that sequentially invites transmission, and only a secondary station that is invited to transmit has the right to transmit to the primary station, a polling transmission order storage device that is provided on the primary station side and stores the polling transmission order. , a secondary station transmission record storage device which is provided on the primary station side and stores the fact of whether or not data was sent out during the previous polling in correspondence with each secondary station; this secondary station transmission record storage device; A transmission device comprising means for modifying the contents of the polling transmission order storage device according to a predetermined rule in accordance with the contents of the above.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP27813586A JPS63131745A (en) | 1986-11-21 | 1986-11-21 | Transmitting equipment |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP27813586A JPS63131745A (en) | 1986-11-21 | 1986-11-21 | Transmitting equipment |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS63131745A true JPS63131745A (en) | 1988-06-03 |
Family
ID=17593079
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP27813586A Pending JPS63131745A (en) | 1986-11-21 | 1986-11-21 | Transmitting equipment |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS63131745A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002041158A1 (en) * | 2000-11-20 | 2002-05-23 | Matsushita Electric Industrial Co., Ltd. | Noncontact reader/writer, information communication system using the same, and management system using the same |
-
1986
- 1986-11-21 JP JP27813586A patent/JPS63131745A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002041158A1 (en) * | 2000-11-20 | 2002-05-23 | Matsushita Electric Industrial Co., Ltd. | Noncontact reader/writer, information communication system using the same, and management system using the same |
EP1338975A1 (en) * | 2000-11-20 | 2003-08-27 | Matsushita Electric Industrial Co., Ltd. | Noncontact reader/writer, information communication system using the same, and management system using the same |
EP1338975A4 (en) * | 2000-11-20 | 2005-01-12 | Matsushita Electric Ind Co Ltd | Noncontact reader/writer, information communication system using the same, and management system using the same |
US6899270B2 (en) | 2000-11-20 | 2005-05-31 | Matsushita Electric Industrial Co., Ltd. | Noncontact reader/writer, information communication system using the same, and management system using the same |
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