JPS63197144A - Information communication system - Google Patents

Information communication system

Info

Publication number
JPS63197144A
JPS63197144A JP2828587A JP2828587A JPS63197144A JP S63197144 A JPS63197144 A JP S63197144A JP 2828587 A JP2828587 A JP 2828587A JP 2828587 A JP2828587 A JP 2828587A JP S63197144 A JPS63197144 A JP S63197144A
Authority
JP
Japan
Prior art keywords
information
data
node
network
terminal
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
Application number
JP2828587A
Other languages
Japanese (ja)
Inventor
Takaaki Yamazaki
山崎 孝昭
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Engineering Co Ltd
Hitachi Ltd
Original Assignee
Hitachi Engineering Co Ltd
Hitachi Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hitachi Engineering Co Ltd, Hitachi Ltd filed Critical Hitachi Engineering Co Ltd
Priority to JP2828587A priority Critical patent/JPS63197144A/en
Publication of JPS63197144A publication Critical patent/JPS63197144A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To efficiently attain offering service of information independently of number of computers at a terminal equipment requesting the information by allowing a node to select optionally plural data sent from a master so as to obtain the required information. CONSTITUTION:A host computer 9 storing the information required by a terminal computer 9 sends cyclically a data frame, that is, the information group of the data frame comprising a flag 11 representing the start of data, an IN-No. part 16 representing the ID-No. of the information part, the information part 14, a CRC part 15 checking the reliability of data and a flag part 11 representing the end of data to a network. The terminal computer 9 requiring information gives a command of ID-No.16 of the required information to a node 2, the node 2 receiving a request receives a data frame coincident with the ID-No.16 from the network and transfers the received information part 14 to the request terminal computer. Thus, the equal service is attained independently of number of sets of terminal computers.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 、一本発明は計算機間、測定器、端末9周辺機器間ニー
′ のデータ伝送に有益なネットワーク装置に関する。
DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a network device useful for data transmission between computers, measuring instruments, terminals, and peripheral devices.

〔従来の技術〕[Conventional technology]

従来の装置は複数台の計算機、端末等を共通伝送路1(
以下ネットワークと呼称する)を介して接続し、任意の
計算機、端末間でデータの送受信を行なうものであり、
例えば、特開昭58−16337号公報に記載のような
ものである。
Conventional equipment connects multiple computers, terminals, etc. through a common transmission path 1 (
It connects via a network (hereinafter referred to as a network) and sends and receives data between arbitrary computers and terminals.
For example, it is described in Japanese Unexamined Patent Publication No. 58-16337.

次に、従来システムの構成・動作等を詳細に説明する。Next, the configuration and operation of the conventional system will be explained in detail.

第2図において、各伝送端局2(以下ノードと呼称する
)は、ネットワークとのデータの送受信を制御するネッ
トワーク伝送制御部3.計算機8゜又は、端末8等の外
部機器とデータの送受信を制御する外部機器制御部5.
ネットワーク側、外部機器側双方の共通の情報を記憶す
るメモリ部4゜ノードアドレスの設定、その他各種の設
定値を入力する外部設定部6.ノード2内全体を統括制
御する中央処理部7から構成される。また、各ノード2
は各計算機又は端末に接続され、ネットワーク1に対し
ては、複数台接続されるマルチドロップ形態をとる。
In FIG. 2, each transmission terminal station 2 (hereinafter referred to as a node) has a network transmission control unit 3. An external device control unit 5 that controls data transmission and reception with external devices such as the computer 8 or the terminal 8.
Memory section 4. Stores information common to both the network side and external device side. External setting section 6. Enters node address settings and various other setting values. It is composed of a central processing unit 7 that centrally controls the entire inside of the node 2. Also, each node 2
is connected to each computer or terminal, and takes a multi-drop configuration in which a plurality of devices are connected to network 1.

第11!I、第3図によりデータ伝送システムの代表的
な動作を説明する。
11th! A typical operation of the data transmission system will be explained with reference to FIG.

システムは各種のデータを送信又は受信する複数台の計
算機9と各々ノード2が接続し又、ネツトワークへも接
続しており、各計算機9は送信データが発生する毎にデ
ータがノード2へ送出され、ノード2では外部機器伝送
制御部5を介して受信したデータをメモリ部4へ格納す
る。それにより中央処理部7がそれを検知し送信先アド
レス12゜送信元アドレス13等の情報を付加しネット
ワーク伝送制御部3へ制御を渡すとこのデータがネット
ワーク1上へ送出されその送信先アドレス12と一致し
たノード2のみがそのデータを受は取り、ネットワーク
制御部3を介してメモリ部4へ格納される。他のノード
2では送信先アドレスと自局アドレスの比較後、白濁ア
ドレスと一致しない為。
In the system, each node 2 is connected to a plurality of computers 9 that transmit or receive various data, and is also connected to a network, and each computer 9 sends data to the node 2 every time transmission data is generated. Then, the node 2 stores the data received via the external device transmission control section 5 in the memory section 4. The central processing unit 7 detects this, adds information such as the destination address 12 and the source address 13, and passes control to the network transmission control unit 3, which sends this data onto the network 1 and sends it to the destination address 12. Only the node 2 that matches this receives the data and stores it in the memory section 4 via the network control section 3. In other node 2, after comparing the destination address and its own address, it does not match the cloudy address.

無視することとなる。受信側ノード2では、中央処理部
7がネットワーク1からのデータの受信を検知し、外部
機器伝送制御部5に制御を渡し計算機9へデータを送信
することとなり受信側計算機9ではデータ内の送信元ア
ドレスより送り元の計算機9を認識する。
It will be ignored. In the receiving node 2, the central processing unit 7 detects the reception of data from the network 1, passes control to the external device transmission control unit 5, and transmits the data to the computer 9. The sender computer 9 is recognized from the original address.

〔発明が解決しようとする問題点〕[Problem that the invention seeks to solve]

上記従来技術を用いて一台のマスク計算機から必要な情
報を得るシステムにおいて、上記手順により要求送信、
応答受信を行なう為、端末計算機の数が増えた場合、情
報提供のサービスが低下する問題があった6本発明の目
的は、端末計算機の台数にかかわらず、同等なサービス
を可能にすることにある。
In a system that uses the above conventional technology to obtain necessary information from one mask calculator, the above procedure is used to send a request,
Due to response reception, when the number of terminal computers increases, there is a problem that the information provision service deteriorates6.The purpose of the present invention is to enable the same service regardless of the number of terminal computers. be.

〔問題点を解決するための手段〕[Means for solving problems]

上記目的は、ネットワーク上に送出されるデータフレー
ムのアドレス部を情報の識別番号(以下ID−Nαと呼
称する)とし、端末計算機にサービス可能な情報をマス
ク計算機よりネットワーク上にサイクリックに送信する
ことにより達成される。
The above purpose is to use the address part of the data frame sent over the network as an information identification number (hereinafter referred to as ID-Nα), and to cyclically transmit information that can be serviced to the terminal computer over the network from the mask computer. This is achieved by

〔作用〕[Effect]

ノードは、ネットワーク上に流れているデータフレーム
のアドレス部を識別することにより、ノード内゛に設定
されたアドレス情報と一致したアドレス部を持つ情報を
受信することが可能である為、データ送信側でデータフ
レームのアドレス部に情報のID−&を設定し、データ
受信側では必要な情報のID−&をノード内に設定する
ことにより。
By identifying the address part of the data frame flowing on the network, the node can receive information whose address part matches the address information set within the node, so the data sending side By setting the information ID-& in the address field of the data frame, and setting the necessary information ID-& in the node on the data receiving side.

必要な情報を間違いなく受信することが可能である。It is possible to receive necessary information without fail.

〔実施例〕〔Example〕

以下本発明の一実施例を第1図、第4図、第5図を用い
て説明する。
An embodiment of the present invention will be described below with reference to FIGS. 1, 4, and 5.

第1図に示す様なデータ伝送システムにおいて。In a data transmission system as shown in FIG.

端末計算機9が必要とする情報を記憶する主計算機9よ
りノード2を介してネットワーク上へ第5図で示す様な
データフレームつまり、データの初まりを示すフラグ1
1.情報部のID−&を示すID−N6部16.情報部
14.データの信頼性をチェックするCRC部15.デ
ータの最終を示すフラグ部11より構成されるデータフ
レームの情報群を第4図で示す様にサイクリックにネッ
トワーク上に送信する。
A data frame as shown in FIG. 5 is sent from the main computer 9 that stores information required by the terminal computer 9 onto the network via the node 2, that is, a flag 1 indicating the beginning of the data.
1. ID-N6 section 16 indicating ID-& of the information section. Information Department 14. CRC section 15 for checking reliability of data. A data frame information group consisting of a flag section 11 indicating the end of data is cyclically transmitted over the network as shown in FIG.

情報を必要とする端末側計算機9では、必要な情報のI
D−&16をノード2に摺令し要求を受けたノード2は
、ID−416と一致したデータフレームをネットワー
ク上より受信し、受信した情報部14を要求元端末計算
機へ転送する。
In the terminal side computer 9 that requires information, the necessary information I
Node 2, which received the request by sending D-&16 to node 2, receives a data frame matching ID-416 from the network, and transfers the received information section 14 to the requesting terminal computer.

〔発明の効果〕〔Effect of the invention〕

本発明によれば、情報を要求する端末の計算機台数によ
らず、効率の良い情報の提供サービスが可能となる。
According to the present invention, an efficient information provision service can be provided regardless of the number of terminal computers requesting information.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は本発明の一実施例の複数台の計算機からなるシ
ステム図、第2図はノード内の構成図、第3図は従来シ
ステムのネットワークデータのフレーム構成図、第4図
は本発明を実現する為のデータ送信の概念図、第5図は
本発明を実現する為のデータフレーム構成図である。 1・・・共通伝送路、2・・・ノード、3・・・ネット
ワーク伝送制御部、4・・・メモリ部、5・・・外部接
続機器伝送制御部、6・・・外部設定部、7・・・中央
処理部、9・・・外部計算機、11・・・フラグ、12
・・・送信先アドレス、13・・・送り元アドレス、1
4・・・情報部。 15・・・CRC,16・・・ID−魔、17・・・デ
ータフレーム。
Fig. 1 is a diagram of a system consisting of multiple computers according to an embodiment of the present invention, Fig. 2 is a diagram of the internal configuration of a node, Fig. 3 is a frame diagram of network data of a conventional system, and Fig. 4 is a diagram of the present invention. FIG. 5 is a conceptual diagram of data transmission to realize the present invention, and FIG. 5 is a data frame configuration diagram to realize the present invention. DESCRIPTION OF SYMBOLS 1... Common transmission path, 2... Node, 3... Network transmission control section, 4... Memory section, 5... Externally connected device transmission control section, 6... External setting section, 7 ...Central processing unit, 9...External computer, 11...Flag, 12
... Destination address, 13 ... Source address, 1
4...Information Department. 15...CRC, 16...ID-Magic, 17...Data frame.

Claims (1)

【特許請求の範囲】 1、共通伝送路に接続される複数台のノードと各各前記
ノードに接続される複数台の端末およびマスターからな
り、マスターから伝送路へ複数のデータをサイクリツク
に送信するシステムにおいて、 前記マスターから送信される複数のデータをノードが任
意に選択し必要な情報を得る事を特徴とする情報通信シ
ステム。
[Claims] 1. Consists of a plurality of nodes connected to a common transmission path, and a plurality of terminals and a master connected to each of the nodes, and cyclically transmits a plurality of data from the master to the transmission path. An information communication system, characterized in that a node arbitrarily selects a plurality of data transmitted from the master to obtain necessary information.
JP2828587A 1987-02-12 1987-02-12 Information communication system Pending JPS63197144A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2828587A JPS63197144A (en) 1987-02-12 1987-02-12 Information communication system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2828587A JPS63197144A (en) 1987-02-12 1987-02-12 Information communication system

Publications (1)

Publication Number Publication Date
JPS63197144A true JPS63197144A (en) 1988-08-16

Family

ID=12244333

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2828587A Pending JPS63197144A (en) 1987-02-12 1987-02-12 Information communication system

Country Status (1)

Country Link
JP (1) JPS63197144A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04184501A (en) * 1990-11-20 1992-07-01 Hitachi Ltd Process data processing system
WO2000009820A1 (en) * 1998-08-12 2000-02-24 Hitachi Construction Machinery Co., Ltd. Electronic control system and control device for construction machine
US6336067B1 (en) 1998-08-12 2002-01-01 Hitachi Construction Machinery Co., Ltd. Electronic control system and control device for construction machine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04184501A (en) * 1990-11-20 1992-07-01 Hitachi Ltd Process data processing system
WO2000009820A1 (en) * 1998-08-12 2000-02-24 Hitachi Construction Machinery Co., Ltd. Electronic control system and control device for construction machine
US6336067B1 (en) 1998-08-12 2002-01-01 Hitachi Construction Machinery Co., Ltd. Electronic control system and control device for construction machine

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