JPH0646735B2 - Communication network control method - Google Patents
Communication network control methodInfo
- Publication number
- JPH0646735B2 JPH0646735B2 JP62280010A JP28001087A JPH0646735B2 JP H0646735 B2 JPH0646735 B2 JP H0646735B2 JP 62280010 A JP62280010 A JP 62280010A JP 28001087 A JP28001087 A JP 28001087A JP H0646735 B2 JPH0646735 B2 JP H0646735B2
- Authority
- JP
- Japan
- Prior art keywords
- command
- response
- terminal
- communication network
- communication
- 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 - Lifetime
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Description
【発明の詳細な説明】 産業上の利用分野 本発明は、伝送路により結合された端末間での通信によ
る情報の収集、特に同報通信を利用した情報収集方法に
関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to collecting information by communication between terminals connected by a transmission path, and more particularly to an information collecting method using broadcast communication.
従来の技術 第３図〜第６図を用いて従来の技術について説明する。Conventional Technique A conventional technique will be described with reference to FIGS. 3 to 6.
第３図は本発明が適用される通信ネットワークの一構成
例を、第４図は本発明が適用される通信ネットワーク制
御電文の一構成例を、第５図は従来の端末の属性情報の
収集にかかわるコマンドの一例を、第６図は従来のコマ
ンドによる同報通信を利用した端末の属性情報収集時の
シーケンスの一例を示すものである。第４図において、
４１は端末のアドレスやプライオリティといった伝送路
３０上のレイヤ２までの通信にかかわるヘッダー部を、
４２はレイヤ３以上の端末の制御に関わるコマンドであ
る。FIG. 3 is a configuration example of a communication network to which the present invention is applied, FIG. 4 is a configuration example of a communication network control message to which the present invention is applied, and FIG. 5 is a collection of attribute information of conventional terminals. FIG. 6 shows an example of a command relating to the above, and FIG. 6 shows an example of a sequence at the time of collecting attribute information of a terminal using broadcast communication by a conventional command. In FIG.
Reference numeral 41 denotes a header portion related to communication up to layer 2 on the transmission path 30 such as a terminal address and priority,
Reference numeral 42 is a command related to control of terminals of layer 3 or higher.
一般に、伝送路３０に接続され通信ナットワーク上の端
末の属性等の管理を行う端末（以下コントローラと呼
ぶ）３１が、同様に伝送路３０に接続され相互に通信を
行う端末ａ３２〜端末ｎ３５の属性を収集する際、伝送
路にあらかじめ接続されるアドレスのテーブルを持ち管
理する手間の削減やメモリ空間の有効利用、通信ネット
ワークに接続される端末の数や種類の拡張性を考慮し
て、伝送路３０上に一斉同報で属性登録要求コマンド５
１の電文を送信し（６１）、一方、端末ｂ３３〜端末ｎ
３５は前記属性登録要求コマンド５１を受信すると、伝
送路３０上の通信の仕様に従って属性登録応答コマンド
５２をコントローラ３１へ返送（６２〜６４）すること
によりコントローラ３１は端末の属性の収集を行いネッ
トワーク内の端末を管理していた。In general, a terminal (hereinafter referred to as a controller) 31 that is connected to the transmission line 30 and manages attributes of terminals on the communication network, etc., is a terminal a 32 to a terminal n 35 that are similarly connected to the transmission line 30 and communicate with each other. When collecting attributes, transmission is performed by taking into account the labor of maintaining a table of addresses that are connected in advance to the transmission path, effective use of memory space, and expandability of the number and types of terminals connected to the communication network. Attribute registration request command 5 by broadcast on road 30
1 message (61), while terminal b33 to terminal n
Upon receiving the attribute registration request command 51, the controller 35 returns the attribute registration response command 52 (62 to 64) to the controller 31 in accordance with the communication specifications on the transmission line 30, whereby the controller 31 collects the attributes of the terminal and the network. Was managing the terminal inside.
従来の方式では、その際一斉同報による通信で生じる伝
送路３０の状態や端末自体の状態による同報電文の取り
こぼしによる端末の属性情報の収集漏れを回避したり新
たに接続された端末の状態の登録を円滑に行うために、
定期的に前記属性登録要求コマンド５１の送信による情
報収集を行っていた。このような情報収集漏れやシステ
ム拡張への対応のためのコントローラ３１からの属性登
録要求コマンド５１の定期的送信（６５）に対しても、
すでに登録済の端末ｂ３３〜端末ｎ３５も属性登録応答
５２を返し（６６〜６８）、本来の収集目的である端末
ａ３２からの属性登録応答コマンド５２受信（６９）ま
でに余分な処理が入り、コントローラ３１の内部処理が
めんどうになるだけでなく、端末側では無用な処理の為
に電文送信待ちを行ったり、伝送路に接続される端末の
数が増えるほど不用な電文の為に伝送路上のトラフィッ
クが増加し本来必要な通信への障害が出ていた。In the conventional method, avoiding the omission of collecting the attribute information of the terminal due to the missing of the broadcast message due to the status of the transmission line 30 or the status of the terminal itself caused by the simultaneous broadcast communication, or the status of the newly connected terminal. To facilitate the registration of
Information is collected by transmitting the attribute registration request command 51 on a regular basis. Even with respect to the periodic transmission (65) of the attribute registration request command 51 from the controller 31 in order to cope with such information collection omission and system expansion,
The terminals b33 to n35 which have already been registered also return the attribute registration response 52 (66 to 68), and extra processing is entered by the time the attribute registration response command 52 is received (69) from the terminal a32 which is the original collection purpose. Not only the internal processing of 31 becomes troublesome, but the terminal side waits for message transmission for unnecessary processing, and as the number of terminals connected to the transmission channel increases, the traffic on the transmission channel becomes unnecessary because of unnecessary messages. Was increasing and there were obstacles to the originally required communication.
発明が解決しようとする問題点 このように、一斉同報による情報収集のために同一のコ
マンドを一定間隔で送信する方式では、本来の収集対象
である端末の情報を収集するために、多数の余分な端末
からの情報の処理も行わなければならずコントローラの
負荷が増加するといった問題点や、端末の数が増えるほ
ど無用な電文のために伝送路上のトラフィックが増加す
ることにより本来必要な通信を妨げるといった問題点を
有していた。Problems to be Solved by the Invention As described above, in the method in which the same command is transmitted at a constant interval for the purpose of collecting information by simultaneous broadcast, in order to collect the information of the terminal which is the original collection target, a large number of It is necessary to process information from extra terminals, which increases the load on the controller. Also, as the number of terminals increases, the traffic on the transmission line increases due to useless telegrams. There was a problem that it interfered with.
問題点を解決するための手段 本発明は上記問題点を解決するために、伝送路上の通信
の制御方式に従って相互通信を行うネットワークで、あ
る端末が他の端末の属性等の状態を収集するためのコマ
ンドに、必ず応答を必要とするコマンド以外に、すでに
前記コマンドにより自分の属性等を通知済の場合には応
答を返す必要のない補信コマンドを設け、端末側では前
記補信コマンドに対してはすでに応答済の場合には応答
を返さないように構成することにより、通信による情報
収集、特に一斉同報による情報収集を円滑にするもので
ある。Means for Solving the Problems In order to solve the above problems, the present invention is a network that performs mutual communication in accordance with a communication control method on a transmission line, in which one terminal collects the states such as attributes of other terminals. In addition to the command that always requires a response, a supplementary command that does not need to return a response when the attribute etc. has already been notified by the command is provided in the command of In the meantime, when the response has already been made, the response is not returned, so that the information collection by communication, especially the information collection by the simultaneous broadcast is facilitated.
作用 本発明は上記した構成により、一斉同報による情報収集
によるコントローラの負荷を軽減するだけでなく伝送路
上の無用なトラフィックを削減し情報収集の効率を大い
に上げるものである。Effect The present invention not only reduces the load on the controller due to the information collection by simultaneous broadcast but also reduces unnecessary traffic on the transmission path and greatly improves the information collection efficiency by the above-described configuration.
実施例 第１図から第４図とともに本発明による実施例について
説明する。Embodiment An embodiment according to the present invention will be described with reference to FIGS. 1 to 4.
第１図は本発明に関わるコマンドの一例を、第２図は本
発明に関わる一斉同報による情報収集のシーケンスの一
例を示すものである。FIG. 1 shows an example of a command relating to the present invention, and FIG. 2 shows an example of a sequence of information collection by simultaneous broadcast relating to the present invention.
本発明によるコマンドとして、第１図に示すように属性
登録要求コマンド１１に対しての属性登録要求補信コマ
ンド１２を設けた。また、第４図に示すようにコマンド
４２がオペランド４３とオペレーション４４により構成
されるような場合にはオペランド４３の値は従来のコマ
ンドと同一とし（第１図ではコードの値８０）オペレー
ション４４で相違を示すことにより、従来のコマンドに
付加的意味を持たせることができ、コマンドコードの追
加にもならずに導入も容易となる。As the command according to the present invention, as shown in FIG. 1, an attribute registration request supplement command 12 for the attribute registration request command 11 is provided. When the command 42 is composed of the operand 43 and the operation 44 as shown in FIG. 4, the value of the operand 43 is the same as the conventional command (code value 80 in FIG. 1). By indicating the difference, the conventional command can be given an additional meaning, and the command code can be easily introduced without being added.
本方式によれば、伝送路３０に接続されたコントローラ
３１が、同様に伝送路３０に接続され相互に通信を行う
端末ａ３２〜端末ｎ３５の属性を収集する際、伝送路３
０上に一斉同報で属性登録要求コマンド１１の電文を送
信し（２１）、一方、端末ｂ３３〜端末ｎ３５は前記属
性登録要求コマンド１１を受信すると、伝送路３０上の
通信の仕様に従って属性登録応答コマンド１３をコント
ローラ３１へ返送（２２〜２４）することによりコント
ローラ３１は端末の属性の収集を行いネットワーク内の
端末を管理する際に、一斉同報による通信で生じる伝送
路３０の状態や端末自体の状態による同報電文の取りこ
ぼしによる端末の属性情報の収集漏れを回避したり新た
に接続された端末の状態の登録を円滑に行うために、定
期的に新たに設けた属性登録要求補信コマンド１２を送
信（２５）する。この時本発明による端末では、すでに
属性登録要求コマンド１１を受信しそれに対する属性登
録応答コマンド１２を返送済の端末ｂ３３〜端末ｎ３５
は、前記属性登録補信コマンドに対しては応答せず、前
回の属性登録要求コマンド１１の送信（２１）時に何ら
かの原因でうまく受信できなかった端末ａ３２が属性登
録応答コマンド１３を返送（２６）する。According to this method, when the controller 31 connected to the transmission line 30 collects the attributes of the terminals a32 to n35 which are also connected to the transmission line 30 and communicate with each other, the transmission line 3
On the other hand, the telegram of the attribute registration request command 11 is transmitted to all 0s at the same time (21). By returning the response command 13 to the controller 31 (22 to 24), the controller 31 collects the attributes of the terminals and manages the terminals in the network. Attribute registration request supplement provided periodically in order to avoid omission of collection of attribute information of terminals due to omission of broadcast message due to own status and smooth registration of status of newly connected terminal The command 12 is transmitted (25). At this time, in the terminal according to the present invention, the terminal b33 to terminal n35 which have already received the attribute registration request command 11 and already returned the attribute registration response command 12 to the attribute registration request command 11.
Does not respond to the attribute registration assistance command, and the terminal a 32, which was not successfully received for some reason at the previous transmission (21) of the attribute registration request command 11, returns the attribute registration response command 13 (26). To do.
以上のように、本方式によれば情報収集漏れやシステム
拡張への対応のためのコントローラ３１からの属性登録
要求補信コマンド１２によって、未登録・未応答の端末
のみが応答を返すことになり、コントローラ３１の内部
処理が簡単になるだけでなく、端末側での電文送信の為
の待ち時間や無用のトラフィックの増加を削減できる。As described above, according to this method, only the unregistered / unresponded terminals return a response due to the attribute registration request supplementary command 12 from the controller 31 in order to cope with omission of information collection and system expansion. In addition to simplifying the internal processing of the controller 31, it is possible to reduce the waiting time for message transmission on the terminal side and increase in unnecessary traffic.
発明の効果 以上のように、本発明によれば、きわめて簡単な手段に
より一斉同報による情報の収集漏れに対応するためのコ
ントローラの負荷を軽減するだけでなく伝送路上の無用
なトラフィックを削減し、情報の収集効率を大いに上げ
るものである。EFFECTS OF THE INVENTION As described above, according to the present invention, not only the load of the controller for dealing with the omission of information collection by simultaneous broadcast is reduced by an extremely simple means, but also unnecessary traffic on the transmission line is reduced. , It greatly improves the efficiency of collecting information.
第１図は本発明に関わるコマンドの一例を示す図、第２
図は本発明に関わる一斉同報による情報収集のシーケン
スの一例を示す図、第３図は本発明が適用される通信ネ
ットワークの一例の構成図、第４図は同通信ネットワー
ク制御電文の一例の構成図、第５図は従来の端末の属性
情報の収集にかかわるコマンド例の構成図、第６図は同
コマンドによる同報通信を利用した端末の属性情報収集
時のシーケンスの一例の説明図である。 １１……属性登録要求コマンド、１２……属性登録要求
補信コマンド、１３……属性登録応答コマンド。FIG. 1 is a diagram showing an example of a command relating to the present invention, and FIG.
FIG. 3 is a diagram showing an example of a sequence of information collection by simultaneous broadcast related to the present invention, FIG. 3 is a block diagram of an example of a communication network to which the present invention is applied, and FIG. 4 is an example of the same communication network control message. FIG. 5 is a configuration diagram of a command example relating to the collection of attribute information of a conventional terminal, and FIG. 6 is an explanatory diagram of an example of a sequence at the time of collecting attribute information of a terminal using broadcast communication by the command. is there. 11 ... Attribute registration request command, 12 ... Attribute registration request auxiliary command, 13 ... Attribute registration response command.
Claims (3)
送路上の通信の制御方式に従って相互通信を行うネット
ワークにおいて、ある端末が他の端末の属性等の状態を
収集するためのコマンドに、必ず応答を要求するコマン
ドと、すでに前記コマンドにより自己の属性等を通知済
の場合には応答を返す必要のないコマンド（以下補信コ
マンドと呼ぶ）の二種類を設けることを特徴とする通信
ネットワーク制御方式。1. In a network in which a plurality of terminals are connected by a transmission path and mutual communication is performed according to a communication control method on the transmission path, a command for a certain terminal to collect a state such as an attribute of another terminal, A communication network characterized in that two types of commands are provided: a command that always requests a response, and a command that does not need to return a response if it has already notified its own attributes, etc. (hereinafter referred to as a supplementary command). control method.
ンコードと１バイト以上のオペランドにより構成し、前
記コマンドの２種類のオペレーションコード部の値は同
じものを用いオペランドコード部で通常の要求コマンド
か補信コマンドかの識別がつくように構成することを特
徴とする特許請求の範囲第１項記載の通信ネットワーク
制御方式。2. A command is composed of an operation code of 1 byte or more and an operand of 1 byte or more, and the values of the two kinds of operation code parts of the command are the same, and the operand code part uses a normal request command or a complementary command. The communication network control system according to claim 1, wherein the communication network control system is configured so that it can be identified as a communication command.
答を必要とするコマンドに対して必ず応答を返し、自己
の現在の属性等を通知済の場合には、前記コマンドの補
信コマンドに対しては応答を返さず、応答済でない場合
のみ応答を返すように構成することを特徴とする特許請
求の範囲第１項記載の通信ネットワーク制御方式。3. A terminal connected to a network always returns a response to a command that requires a response, and when the current attribute of the terminal has already been notified, a response command to the command is sent. The communication network control method according to claim 1, wherein the communication network control method is configured so as not to return a response and to return a response only when the response has not been received.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62280010A JPH0646735B2 (en) | 1987-11-05 | 1987-11-05 | Communication network control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62280010A JPH0646735B2 (en) | 1987-11-05 | 1987-11-05 | Communication network control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01122231A JPH01122231A (en) | 1989-05-15 |
| JPH0646735B2 true JPH0646735B2 (en) | 1994-06-15 |
Family
ID=17619045
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62280010A Expired - Lifetime JPH0646735B2 (en) | 1987-11-05 | 1987-11-05 | Communication network control method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0646735B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7266608B2 (en) | 2000-01-20 | 2007-09-04 | Mitsubishi Denki Kabushiki Kaisha | System for punctually sending and receiving serial data and a method for sending and receiving the serial data |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0612897B2 (en) * | 1982-08-20 | 1994-02-16 | 株式会社日立製作所 | Communication control method in communication network system |
| JPS5940745A (en) * | 1982-08-31 | 1984-03-06 | Nec Corp | Multi-address calling system |
-
1987
- 1987-11-05 JP JP62280010A patent/JPH0646735B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01122231A (en) | 1989-05-15 |
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