JPS6166497A - Recognition of dead lock - Google Patents
Recognition of dead lockInfo
- Publication number
- JPS6166497A JPS6166497A JP18793884A JP18793884A JPS6166497A JP S6166497 A JPS6166497 A JP S6166497A JP 18793884 A JP18793884 A JP 18793884A JP 18793884 A JP18793884 A JP 18793884A JP S6166497 A JPS6166497 A JP S6166497A
- Authority
- JP
- Japan
- Prior art keywords
- time
- control
- response
- selection
- recognition
- 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
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C25/00—Arrangements for preventing or correcting errors; Monitoring arrangements
- G08C25/02—Arrangements for preventing or correcting errors; Monitoring arrangements by signalling back receiving station to transmitting station
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Selective Calling Equipment (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の下り用分野〕
本発明は、親局から子局をコントロールするシステムに
係り、特に、親局内で機器毎に設定したアンサ−バンク
時間を効率良く認識する方法に関する。[Detailed Description of the Invention] [Downstream Field of the Invention] The present invention relates to a system for controlling slave stations from a master station, and in particular, a method for efficiently recognizing answer bank times set for each device within the master station. Regarding.
第2図に従来の制御に対するアンサーバック監視例を示
す。従来の装置は、特開昭59−12300号公報に記
載のように、制御機器に対するアンサーバック監視は操
作ポジションと応動ポジ7ヨンの一致確認の他に、各制
御種別毎、例えば、ポンプの起動指令の場合、出力して
から実際にポンプ運転するまでの最大時間を監視タイマ
ー値として常駐させ、そのタイムアウトを検出した場合
に、はじめて異常として警報する。しかし、ポンプの種
類によっては応答時間に差がある上、異常検出の時間遅
れが許されない場合等に、制御種別毎に逐時対応しない
固定タイマーでは、ある制御対象機器が早い時期にタイ
ムアウトになっても、特定機器の最大タイムアウト時間
分設定しているため、前出との時間差が生じ、異常検出
が遅れる不具合が発生し、更には、タイムアウト状態の
リセットが手動のため強制的にリセットしない限り、次
の機器選択が出来ないという悪循環があつ之。すなわち
、制御信号入力装置lから入力ざれた制御データは、合
理性判別器5、デコーダ13ft経て、制御パラメータ
6に対応して編集され、子局へ送出される。一方、子局
からの応動データはアンサーバック検出回路lOにより
一部時間タイムア9トを検出した後、応答があれば、制
御データと応動データの比較をし、不一致の場合は、誤
動作を知らせ、応答がない場合は、手動による選択リセ
ット後、初めて、次の制御ステップへの移行が可能とな
る。FIG. 2 shows an example of answerback monitoring for conventional control. As described in Japanese Unexamined Patent Publication No. 59-12300, conventional devices perform answer-back monitoring of control equipment by checking the coincidence of the operating position and response position, as well as checking for each type of control, for example, pump activation. In the case of a command, the maximum time from output to actual pump operation is kept as a monitoring timer value, and only when a timeout is detected, an alarm is issued as an abnormality. However, response times vary depending on the type of pump, and in cases where a time delay in abnormality detection is not acceptable, a fixed timer that does not respond to each control type may cause a certain controlled device to time out early. However, since the maximum timeout time of the specific device is set, there will be a time difference from the previous one, causing a problem in which abnormality detection will be delayed.Furthermore, the timeout state can be reset manually, so unless it is forcibly reset. , a vicious cycle ensues in which the next device cannot be selected. That is, the control data inputted from the control signal input device 1 passes through the rationality discriminator 5 and the decoder 13ft, is edited in accordance with the control parameters 6, and is sent to the slave station. On the other hand, the response data from the slave station is detected by the answerback detection circuit IO for a part of the time, and if there is a response, the control data and response data are compared, and if they do not match, a malfunction is notified. If there is no response, it is only possible to move to the next control step after manually resetting the selection.
なお、図中2は親局装置、3は信号伝送装置、4は表示
装置、7はコード編集処理、8は伝送路、11は選択解
除回路である。In the figure, 2 is a master station device, 3 is a signal transmission device, 4 is a display device, 7 is a code editing process, 8 is a transmission path, and 11 is a selection cancellation circuit.
本発明の目的は、各制御機器に対応するボジシ、ヨン毎
に、制御時のアンサーバック時間をパラメ1、−′
一夕で設け、機器選択毎に逐時そのタイムアクトを監視
して、デッドロックt−認識する方法を提供するにある
。The purpose of the present invention is to set an answer-back time during control as parameter 1, -' overnight for each position and unit corresponding to each control device, monitor the time act every time a device is selected, and The present invention provides a method for recognizing lock t.
本発明の特徴は、親局における制御のアンサーバック監
視に、制御g1機器に対pさせたタイマー値を制御の都
度ロードしては応答時間を監視する。A feature of the present invention is to monitor the answerback of control at the master station by loading a timer value corresponding to the control g1 device each time the control is performed and monitoring the response time.
タイムアウトを認識した場合、機器選択のホールドを自
動的に解除させ、デッドロックを回避し、次機器の選択
を可能にする。When a timeout is recognized, the device selection hold is automatically released to avoid deadlock and enable selection of the next device.
本発明の一実施例を第1図、第3図により詳細に説明す
る。An embodiment of the present invention will be explained in detail with reference to FIGS. 1 and 3.
従来装置との相違点は、制御に対するアンサ−パンク確
認が固定タイマー、又は、人為による視覚確認であった
のに対し、各制御ポジション毎に対応した応動の最大時
間を、予めタイマーパラメータ9として常駐させ制御出
力の度に、その値をマルチプレクサ12t−経てロード
し、逐次、タイムアツプを監視した事にある。これによ
って、アンサーバックのN認が、制御例々の応答時間が
任意に変化しても、柔軟に対応でき、固定タイマーによ
って発生するタイムアウトの遅れ時間、即ち、異常検出
の遅れftm小限にする事が出来る。The difference with conventional devices is that the response puncture confirmation for control was done using a fixed timer or visual confirmation by humans, whereas the maximum response time corresponding to each control position is stored in advance as timer parameter 9. Each time a control output is made, the value is loaded through the multiplexer 12t and the time-up is sequentially monitored. This makes it possible to respond flexibly to N acknowledgments of answerbacks even if the response time of each control example changes arbitrarily, and to minimize the timeout delay caused by a fixed timer, that is, the delay in abnormality detection ftm. I can do things.
同時に、タイムアンプ時には、制御不能に陥いるため、
従来手動で選択解除していたが、本発明ではタイムアン
プをトリガーとして強制的に選択解除に移行し、制御を
解除する。At the same time, during time amplifier, it becomes uncontrollable.
Conventionally, selection was manually deselected, but in the present invention, the time amplifier is used as a trigger to forcibly transition to selection deselection and cancel control.
又、本件では制御対象機器の変更、変換に因るアンサー
バック時間の変更に対して、タイマーカクンタがパラメ
ータであるため、容易に対応でき、特に、厳しいレスポ
ンスタイムが要求されるシステムおよび異常検出の時間
遅れが許されないシステムに威力を発揮する。第3図の
フローチャートに示すように、タイムアツプした場合、
該当機器の許容゛アンサーバック時間をオーバーしたも
のとみなし、三−ステートドライバー14を介し制御出
力を停止させる。In addition, in this case, since the timer kakunta is a parameter, it can easily respond to changes in the answerback time due to changes or conversions in the controlled equipment, especially in systems that require strict response times and abnormality detection. It is effective in systems where time delays cannot be tolerated. As shown in the flowchart in Figure 3, if the time is up,
It is assumed that the permissible answerback time of the relevant device has exceeded, and the control output is stopped via the three-state driver 14.
一方、選択解除回路11にトリガーをかけて、本発明に
よれば、タイムアクトチェック処理そのものを制御の種
別毎に設ける必要がなく、又、制御対象機器の変更に因
るアンサーバック時間の変化にも容易に追随でき、更に
、タイムアツプした時点で、制御選択を解除させるため
、制御のデッドロック時間t−最小限にする事ができる
。On the other hand, according to the present invention, by applying a trigger to the selection canceling circuit 11, it is not necessary to provide the time act check process itself for each type of control, and it is also possible to apply a trigger to the selection cancellation circuit 11. Furthermore, since the control selection is canceled when the time is up, the control deadlock time t- can be minimized.
第1図は本発明の一実施例のブロック図、第2図は従来
装置のブロック図、第3図は本発明のタイムアウトチェ
ック処理のフローチャートである。FIG. 1 is a block diagram of an embodiment of the present invention, FIG. 2 is a block diagram of a conventional device, and FIG. 3 is a flowchart of timeout check processing of the present invention.
Claims (1)
記子局である対象設備を制御するシステムにおいて、 制御機器毎に対応した制御指令から応動までの最大レス
ポンスタイムを、予め、ROM化して常駐させ、機器選
択の都度、対応するタイマー値をロードしては応動タイ
ムアウトを監視し、前記応動タイムアウトを検出した場
合、前記子局の異常とみなし、前記機器選択を強制的に
リセットして次の選択制御を可能にすることを特徴とす
るデッドロック認識方法。[Scope of Claims] 1. In a system in which a master station and a slave station are connected by a transmission path, and the master station controls target equipment that is the slave station, the maximum amount of time required from a control command to a response corresponding to each control device is as follows: The response time is stored in a ROM in advance, and the corresponding timer value is loaded every time a device is selected to monitor the response timeout. When the response timeout is detected, it is assumed that the slave station is abnormal and the device A deadlock recognition method characterized by forcibly resetting a selection to enable next selection control.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18793884A JPS6166497A (en) | 1984-09-10 | 1984-09-10 | Recognition of dead lock |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18793884A JPS6166497A (en) | 1984-09-10 | 1984-09-10 | Recognition of dead lock |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6166497A true JPS6166497A (en) | 1986-04-05 |
Family
ID=16214802
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP18793884A Pending JPS6166497A (en) | 1984-09-10 | 1984-09-10 | Recognition of dead lock |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6166497A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5477847A (en) * | 1992-12-21 | 1995-12-26 | Kiribai Chemical Co., Ltd. | Heating device |
JP2016082348A (en) * | 2014-10-15 | 2016-05-16 | 京セラ株式会社 | Management device, management program and management method |
EP4235375A2 (en) | 2018-07-31 | 2023-08-30 | Wacom Co., Ltd. | Detection method of active stylus |
-
1984
- 1984-09-10 JP JP18793884A patent/JPS6166497A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5477847A (en) * | 1992-12-21 | 1995-12-26 | Kiribai Chemical Co., Ltd. | Heating device |
JP2016082348A (en) * | 2014-10-15 | 2016-05-16 | 京セラ株式会社 | Management device, management program and management method |
EP4235375A2 (en) | 2018-07-31 | 2023-08-30 | Wacom Co., Ltd. | Detection method of active stylus |
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