JPH0416034A - Power supply connection control system for network controller - Google Patents

Power supply connection control system for network controller

Info

Publication number
JPH0416034A
JPH0416034A JP12031590A JP12031590A JPH0416034A JP H0416034 A JPH0416034 A JP H0416034A JP 12031590 A JP12031590 A JP 12031590A JP 12031590 A JP12031590 A JP 12031590A JP H0416034 A JPH0416034 A JP H0416034A
Authority
JP
Japan
Prior art keywords
power supply
switch
communication
supply connection
network controller
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
JP12031590A
Other languages
Japanese (ja)
Inventor
Kaoru Fukuda
福田　かおる
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.)
NEC Corp
Original Assignee
NEC Corp
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 NEC Corp filed Critical NEC Corp
Priority to JP12031590A priority Critical patent/JPH0416034A/en
Publication of JPH0416034A publication Critical patent/JPH0416034A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To prevent misoperation that the operator interrupts power supply without notifying the communication state by allowing a 2nd switch to keep the on-state till the end of communication when information representing the communication state from a communication control section when a 1st switch is used to deenergize the power supply. CONSTITUTION:A switch SW1 for power supply operation is switched to the position of a power supply connection control section 12 and a switch SW2 turning on/off the power supply connection is switched by the control from the power supply connection control section 12. That is, the power supply connection control section 12 receives information representing whether or not a data link is established from a communication control section 11 and when the data link is established, while the switch SW1 is turned off, the switch SW2 is turned off. Moreover, when the data link is established, till the data link is opened, the switch SW2 is kept ON. Thus, a mis-operation interrupting the power supply in mistake on the way of communication resulting in terminating the communication in error is prevented.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明はネットワークコントローラ用電源接続制御方式
に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a power supply connection control system for a network controller.

〔従来の技術〕[Conventional technology]

第２図は、従来および本発明のネットワークコントロー
ラ用電源接続制御方式の適用対象であるネットワークシ
ステムの精成例を示すブロック図である。ワークステー
ションｗｓ１〜ＷＳ４を接続したローカルエリアネット
ワークＬＡＮ５と、ワークステーションＷＳ５〜ＷＳ８
を接続したしＡＮ６とは、それぞれネットワークコント
ローラ１．２により広域ネットワーク網（ＷＮ＞８で結
ばれている。各ワークステーションは、ネットワークコ
ントローラ１，２を介して自由にネットワークアクセス
が可能である。FIG. 2 is a block diagram showing a refined example of a network system to which the conventional power supply connection control method for network controllers and the present invention are applicable. Local area network LAN5 connecting workstations ws1 to WS4 and workstations WS5 to WS8
and AN6 are connected to the wide area network (WN>8) by network controllers 1 and 2, respectively.Each workstation can freely access the network via the network controllers 1 and 2.

従来のネットワークコントローラ１．２の電源接続は、
各ネットワークコントローラに設けた電源スィッチのオ
ン・オフ操作で直接行なうようにしである。The power connection for the conventional network controller 1.2 is as follows:
This is done directly by turning on and off the power switch provided on each network controller.

〔発明が解決しようとする課題〕[Problem to be solved by the invention]

従来のネットワークコントローラ用の電源接続方式は、
上述のごとく電源スィッチの操作で電源接続を直接オン
・オフしているので、ワークステーション同士が通信状
態の場合に電源スィッチをオフにすると電源接続が切断
されてしまい、通信が異常終了してしまうという問題点
がある。特に、多数のワークステーションを接続したＬ
ＡＮで個別のオペレータが通信操作を行なう大規模なネ
ットワークでは、あるＬＡＮのネットワークコントロー
ラで、通信中なのを知らずにオペレータが電源を切断し
てしまう誤操作が頻発し易い。The traditional power connection method for network controllers is
As mentioned above, the power connection is directly turned on and off by operating the power switch, so if you turn off the power switch while the workstations are communicating with each other, the power connection will be severed and the communication will end abnormally. There is a problem. In particular, L
In a large-scale network in which individual operators perform communication operations on the AN, it is easy for operators to make frequent erroneous operations in which they turn off the power to a certain LAN's network controller without realizing that communication is in progress.

〔課題を解決するための手段〕[Means to solve the problem]

本発明の方式は、ネットワークコントローラ動作用の電
源のオン・オフを操作するための第１のスイッチと、該
ネットワークコントローラに接続されたワークステーシ
ョンが通信中か否かを示す情報を発する通信制御部と、
前記電源の接続オン・オフを指示する制御信号に応じて
該オン、オフの切替えを行なう第２のスイッチと、前記
第１のスイッチで電源オフ操作された時に前記通信制御
部から通信中を示す情報が発しておれば前記第２のスイ
ッチに通信完了までオン状態に保持させる前記制御信号
を与える電源接続制御部とを備えている。The system of the present invention includes a first switch for turning on/off a power supply for operating a network controller, and a communication control section that issues information indicating whether or not a workstation connected to the network controller is communicating. and,
a second switch that switches the power supply on and off in response to a control signal instructing connection on and off of the power supply; and a second switch that indicates that communication is in progress from the communication control unit when the first switch is operated to turn off the power supply. and a power supply connection control section that provides the control signal to keep the second switch in the on state until the communication is completed if the information is issued.

〔実施例〕〔Example〕

次に本発明について図面を参照して説明する。 Next, the present invention will be explained with reference to the drawings.

第１図は本発明の一実施例のブロック図である。FIG. 1 is a block diagram of one embodiment of the present invention.

ネットワークコントローラ１の電源操作用のスイッチＳ
ＷＩは、電源接続制御部１２に接続しており、電源の接
続を実際にオン・オフするスイッチＳＷ２は、電源接続
制御部１２がらの制御により切替動作する。すなわち、
電源接続制御部１２は、通信制御部１１からデータリン
クが確立されているか否かを示す情報を受け、スイッチ
ＳＷＩがオフ操作された時点で、データリンクが確立さ
れていなければ、スイッチＳＷ２をオフに切替え、また
データリンクが確立されている場合には、データリンク
が解放されるまでスイッチｓｗ２をオン状態で保持し、
全てのデータリンクが解放された時点でスイッチＳＷ２
をオフにする。Switch S for power operation of network controller 1
The WI is connected to the power supply connection control section 12, and the switch SW2, which actually turns on and off the connection of the power supply, is switched under the control of the power supply connection control section 12. That is,
The power supply connection control unit 12 receives information indicating whether or not a data link is established from the communication control unit 11, and if the data link is not established when the switch SWI is turned off, turns off the switch SW2. and if the data link is established, keep switch sw2 in the on state until the data link is released,
When all data links are released, switch SW2
Turn off.

〔発明の効果〕〔Effect of the invention〕

以上説明したように本発明によれば、通信中にネットワ
ークコントローラの電源スィッチのオフ操作をしても通
信完了まで電源接続をオフしないよう制御することによ
り、通信の途中で誤って電源を落とし通信が異常終了し
てしまうことを防ぐことができる。特に、通信によりデ
ータの更新処理を行なっている時など、通信が以上終了
することで更新処理が中途半端な状態で終わってしまっ
たり入力したデータが消えてしまう場合があり、データ
の復旧や再入力が必要となるが、本発明によりこのよう
な事態を避けることができる。As explained above, according to the present invention, even if the power switch of a network controller is turned off during communication, the power connection is not turned off until the communication is completed, so that the power is accidentally turned off during communication. can be prevented from ending abnormally. In particular, when data is being updated via communication, if the communication ends more than once, the update process may end prematurely or the input data may be lost. Although input is required, such a situation can be avoided by the present invention.

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

第１区は本発明の実施例のブロック図、第２図は従来お
よび本発明の方式の適用例を説明するためのブロック図
である。 １．２・・・ネットワークコントローラ、１１．・４通
信制御部、１２・・・電源接続制御部、ＳＷＩ、ＳＷ２
・・・スイッチ。The first section is a block diagram of an embodiment of the present invention, and FIG. 2 is a block diagram for explaining an example of application of the conventional system and the present invention. 1.2... network controller, 11.・4 communication control unit, 12...power connection control unit, SWI, SW2
···switch.

Claims (1)

【特許請求の範囲】[Claims] ネットワークコントローラ動作用の電源のオン・オフを
操作するための第１のスイッチと、該ネットワークコン
トローラに接続されたワークステーションが通信中か否
かを示す情報を発する通信制御部と、前記電源の接続オ
ン・オフを指示する制御信号に応じて該オン・オフの切
替えを行なう第２のスイッチと、前記第１のスイッチで
電源オフ操作された時に前記通信制御部から通信中を示
す情報が発しておれば前記第２のスイッチに通信完了ま
でオン状態に保持させる前記制御信号を与える電源接続
制御部とを備えていることを特徴とするネットワークコ
ントローラ用電源接続制御方式。a first switch for turning on and off a power supply for operating a network controller; a communication control unit that emits information indicating whether a workstation connected to the network controller is communicating; and a connection between the power supply. a second switch that performs on/off switching in response to a control signal instructing on/off; and a second switch that outputs information indicating that communication is in progress from the communication control unit when the first switch is operated to turn off the power. A power supply connection control system for a network controller, comprising: a power supply connection control unit that supplies the control signal to the second switch to keep it in the on state until communication is completed.
JP12031590A 1990-05-10 1990-05-10 Power supply connection control system for network controller Pending JPH0416034A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12031590A JPH0416034A (en) 1990-05-10 1990-05-10 Power supply connection control system for network controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12031590A JPH0416034A (en) 1990-05-10 1990-05-10 Power supply connection control system for network controller

Publications (1)

Publication Number Publication Date
JPH0416034A true JPH0416034A (en) 1992-01-21

Family

ID=14783200

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12031590A Pending JPH0416034A (en) 1990-05-10 1990-05-10 Power supply connection control system for network controller

Country Status (1)

Country Link
JP (1) JPH0416034A (en)

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