JPH04127214A - Power unit control system - Google Patents

Power unit control system

Info

Publication number
JPH04127214A
JPH04127214A JP2247103A JP24710390A JPH04127214A JP H04127214 A JPH04127214 A JP H04127214A JP 2247103 A JP2247103 A JP 2247103A JP 24710390 A JP24710390 A JP 24710390A JP H04127214 A JPH04127214 A JP H04127214A
Authority
JP
Japan
Prior art keywords
power
switch
job
power supply
program
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
JP2247103A
Other languages
Japanese (ja)
Inventor
Noboru Kinoshita
登 木下
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 Ltd
Original Assignee
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 Ltd filed Critical Hitachi Ltd
Priority to JP2247103A priority Critical patent/JPH04127214A/en
Publication of JPH04127214A publication Critical patent/JPH04127214A/en
Pending legal-status Critical Current

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Abstract

PURPOSE:To prevent the generation of cut-off of a system power supply that is caused during the execution of a job by invalidating the power supply turn-off operation carried out by an operator based on a program during the execution of the job and then turning off the system power supply after the end of the job. CONSTITUTION:When a power switch 6 is turned on, the 1st and 2nd contacts 6-a and 6-b are set in a connection state respectively. Then, the DC voltage is outputted from a power unit 7. Then a program is loaded to a main memory 11 from a file device 12 and carried out there. A power supply holding instruc tion is produced to a power control part 1 in order to suppress the power cut-off state caused by the switch 6. If an operator turns off the switch 6 under such conditions, the switch monitor signal 6 supplied from the contact 6-b is cut off and a power OFF interruption signal (d) is sent to a CPU 10 via a switch monitor circuit 5. Thus, the start is suppressed for the subsequent jobs and the job under execution is completed. As a result, the power OFF timing can be controlled by a program and therefore it is possible to prevent the cut-off of a system power supply that is caused by a misoperation of the operator during the execution of a job.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は計算機システムの電源制御に関し、特に電源切
断制御方法に関するものである。
DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to power control of a computer system, and particularly to a power cut-off control method.

〔従来の技術〕[Conventional technology]

ジョブの実行途中で、システムの電源切断を防止する方
法としては、特開昭58−168118号公報に記載の
ように、あらかじめ計画されたスケジュールにより電源
切断を行なうシステムにおいて、電源切断時該にまだジ
ョブが実行中であった場合、ジョブの終了を待って電源
切断を行なう方式が知られている。
As a method to prevent the system from being powered off in the middle of job execution, as described in Japanese Patent Application Laid-Open No. 168118/1982, in a system where the power is cut off according to a pre-planned schedule, there is A method is known in which, if a job is being executed, the power is turned off after waiting for the job to finish.

〔発明−が解決しようとする課題〕[Problem that the invention seeks to solve]

上記従来技術は、オペレータの電源スイッチの操作によ
る電源切断に対する配慮がされておらずオペレータの誤
操作によってジョブの実行中にシステムの電源が切断さ
れてしまう問題があった。
The above-mentioned conventional technology does not take into consideration the possibility of the power being cut off due to the operation of the power switch by the operator, and there is a problem in that the power of the system may be cut off during the execution of a job due to an operator's erroneous operation.

本発明の目的は、オペレータの電源スイッチの操作によ
り、ジョブの実行中にシステムの電源切断が発生するこ
とを防ぐことにある。
An object of the present invention is to prevent the system from being powered off during job execution due to an operator's operation of a power switch.

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

上記目的を達成するために、電源制御回路内に電源スイ
ッチからの信号に並列に接点回路を設けこの接点の制御
をプログラマブルとし、システムの電源投入後プログラ
ムにより該接点を接続状態とし、オペレータの電源スイ
ッチのオフ操作によっては電源が切断できない様にした
ものである。
In order to achieve the above purpose, a contact circuit is provided in the power control circuit in parallel with the signal from the power switch, and the control of this contact is programmable.After the system is powered on, the contact is connected by a program, and the operator's power The power supply cannot be cut off by turning off the switch.

また、電源スイッチの状態をプログラムから読出し可能
とすることにより、オペレータが電源スイッチをオフし
たことをプログラムに知らせ、以降新たなジョブの受付
けを抑止させ、現在実行中のジョブが終了した時点で該
接点を未接続状態とすることにより、システムの電源を
切断する様にしたものである。
In addition, by making the status of the power switch readable from the program, the program is informed that the operator has turned off the power switch, and the program is prevented from accepting new jobs. By leaving the contacts in an unconnected state, the power to the system is cut off.

〔作用〕[Effect]

オペレータは、電源スイッチをオンすることにより、シ
ステムの電源投入を行なう。システム制御プログラムは
、システム立上げ処理の一環として、接点回路の接続命
令を発行する。接点回路は電源スイッチと並列に接続さ
れた接点を接続状態にすることにより、電源スイッチの
状態が電源制御に直接反映されない様にする。この一連
の動作の終了後、ジョブの開始を行なう。
The operator turns on the system by turning on the power switch. The system control program issues a contact circuit connection command as part of system startup processing. The contact circuit connects the contacts connected in parallel with the power switch so that the state of the power switch is not directly reflected in the power control. After completing this series of operations, the job is started.

次に電源を切断する場合、オペレータは電源スミ源オフ
要求を行なう、システム制御プログラムは、オペレータ
からの電源オフ要求を受取ると、以降新たなジョブの受
付けを抑止し、現在実行中のジ1ブの終了を待つ、ジョ
ブの終了を検出すると、接点回路の切離し命令を発行す
る。接点回路は電源スイッチと並列に接続された接点を
未接続状態とすることにより、システムの電源を切断す
る。このことによって、オペレータの誤操作によっても
ジョブの実行中にシステムの電源が切断されることがな
くなる。
To turn off the power next time, the operator requests the power source to be turned off. When the system control program receives the power off request from the operator, it prevents the acceptance of new jobs and When the end of the job is detected, a command to disconnect the contact circuit is issued. The contact circuit disconnects the contact connected in parallel with the power switch to turn off the power to the system. This prevents the system from being powered off during job execution due to operator error.

〔実施例〕〔Example〕

以下、本発明の一実施例を第1図により説明する。 An embodiment of the present invention will be described below with reference to FIG.

第1図は、本発明を用いた計算機システムの概略構成図
である。電源スイッチ6は、第1接点6−aと第2接点
6−bを持つ2連のスイッチであり、オペレータにより
操作される。オペレータが電源スイッチ6を投入すると
、第1接点6−a。
FIG. 1 is a schematic configuration diagram of a computer system using the present invention. The power switch 6 is a double switch having a first contact 6-a and a second contact 6-b, and is operated by an operator. When the operator turns on the power switch 6, the first contact 6-a.

第2接点6−bが接続状態となる。第1接点6−aから
の接点信号aは電源制御部1を経由して電源オン信号C
として電源ユニット7に伝えられ、電源が投入され電源
ユニット7よりDC電圧が出力される。その後、ファイ
ル装置12よりプログラムが主メモリ11にロードされ
実行される。
The second contact 6-b enters the connected state. The contact signal a from the first contact 6-a is sent via the power supply control unit 1 to the power-on signal C.
The voltage is transmitted to the power supply unit 7, the power is turned on, and the power supply unit 7 outputs a DC voltage. Thereafter, the program is loaded into the main memory 11 from the file device 12 and executed.

プログラムは、電源スイッチ6による電源切断を抑止す
るための電源保持命令をシステムバスhを介して電源制
御部1に発行する。
The program issues a power hold command to the power control unit 1 via the system bus h to prevent the power switch 6 from turning off the power.

電源保持命令は命令デコーダ3により解読され電源保持
信号eとして電源保持回路2に伝えられ接点駈動用信号
gにより保持接点4を駆動する。
The power hold command is decoded by the command decoder 3 and transmitted to the power hold circuit 2 as a power hold signal e, and the hold contact 4 is driven by the contact running signal g.

このことにより電源スイッチ6の状態にかかわらず電源
オン信号Cが出力される。
As a result, the power-on signal C is output regardless of the state of the power switch 6.

この状態でオペレータが電源スイッチ6を切断すると、
第2接点6−bからのスイッチモニタ信号6が切断され
、スイッチモニタ回路5を介してパワーオフ割込み信号
dがCP UIOへ伝えられる。
If the operator turns off the power switch 6 in this state,
The switch monitor signal 6 from the second contact 6-b is cut off, and the power-off interrupt signal d is transmitted to the CPUIO via the switch monitor circuit 5.

プログラムはパワーオフ割込み信号dを検出すると以降
のジョブの起動を抑止し、現在実行中のジョブの終了を
待つ。
When the program detects the power-off interrupt signal d, it suppresses the activation of subsequent jobs and waits for the currently executing job to finish.

4゜ プログラムはジョブの終了を検出すると電源オフ命令を
システムバスhを介して電源制御部1に発行する。電源
オフ命令は命令デコーダ3により解読され電源オフ信号
fとして電源保持回路2に出力される。電源オフ信号f
により接点駈動用信号gがオフされ保持接点4を開放す
る。
4. When the program detects the end of the job, it issues a power off command to the power control unit 1 via the system bus h. The power off command is decoded by the command decoder 3 and outputted to the power holding circuit 2 as a power off signal f. Power off signal f
As a result, the contact cantering signal g is turned off and the holding contact 4 is opened.

これにより電源オン信号Cがオフされ電源が切断される
As a result, the power-on signal C is turned off and the power is cut off.

なお第1図においてノイズフィルタ9はAC入力のノイ
ズ除去、エマ−ジエンジ−スイッチ8は電源異常等の緊
急時の電源切断を行なうためのスイッチである。
In FIG. 1, a noise filter 9 is used to remove AC input noise, and an emergent switch 8 is used to cut off the power in case of an emergency such as a power failure.

〔発明の効果〕〔Effect of the invention〕

本発明によれば、電源オフのタイミングはプログラムに
より管理することができるので、オペレータの誤操作に
よるジョブ途中での電源断を防ぐことができる。
According to the present invention, the power-off timing can be managed by a program, so it is possible to prevent power-off in the middle of a job due to an operator's erroneous operation.

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

第1図は本発明を用いた計算機システムの概略構成図で
ある。 1・・・電源制御部、 2・・・電源保持回路。 3・・・命令デコーダ、 4・・・保持接点、 5・・・スイッチモニタ回路、 6・・・電源スイッチ、 6−a・・第1接点、 6−b・・・第2接点、 7・・・電源ユニット、 8・・・エマ−ジエンジ−スイッチ、 9・・・ノイズフィルタ、 10・・・CPU、 11・・・主メモリ、 12・・・ファイル装置。
FIG. 1 is a schematic configuration diagram of a computer system using the present invention. 1...Power supply control unit, 2...Power supply holding circuit. 3... Command decoder, 4... Holding contact, 5... Switch monitor circuit, 6... Power switch, 6-a... First contact, 6-b... Second contact, 7. ...Power supply unit, 8...Emergency switch, 9...Noise filter, 10...CPU, 11...Main memory, 12...File device.

Claims (1)

【特許請求の範囲】[Claims] 1、オペレータが操作する電源スイッチと該電源スイッ
チの状態により、処理装置の電源制御を行なう計算機シ
ステムにおいて、電源制御部に、電源スイッチの状態に
かかわらず、電源を投入状態にする電源保持用回路と、
プログラムにより該電源保持用回路の動作を有効、無効
にする手段と、該電源スイッチのオン/オフ状態をプロ
グラムに知らせる手段を有しジョブの実行中は、プログ
ラムによりオペレータが行なった電源オフ操作を無効と
し、ジョブの終了後システムの電源オフを行なうことを
特徴とした電源制御方式。
1. In a computer system that controls the power of a processing device based on a power switch operated by an operator and the state of the power switch, a power supply holding circuit is provided in the power control unit to turn on the power regardless of the state of the power switch. and,
The program has means for enabling or disabling the operation of the power supply holding circuit, and means for notifying the program of the on/off status of the power switch.During job execution, the program can control the power off operation performed by the operator. A power control method characterized by disabling the system and turning off the system after the job is completed.
JP2247103A 1990-09-19 1990-09-19 Power unit control system Pending JPH04127214A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2247103A JPH04127214A (en) 1990-09-19 1990-09-19 Power unit control system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2247103A JPH04127214A (en) 1990-09-19 1990-09-19 Power unit control system

Publications (1)

Publication Number Publication Date
JPH04127214A true JPH04127214A (en) 1992-04-28

Family

ID=17158474

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2247103A Pending JPH04127214A (en) 1990-09-19 1990-09-19 Power unit control system

Country Status (1)

Country Link
JP (1) JPH04127214A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0784684A (en) * 1993-09-13 1995-03-31 Nec Corp Computer system
JPH1027072A (en) * 1996-07-09 1998-01-27 Nec Field Service Ltd Data disk array device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0784684A (en) * 1993-09-13 1995-03-31 Nec Corp Computer system
JPH1027072A (en) * 1996-07-09 1998-01-27 Nec Field Service Ltd Data disk array device

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