DE102007048250A1 - Queue function making method for programmable-logic controller, involves processing received command, if controller does not processes command, and retrieving commands with priority, after controller has completed processing of commands - Google Patents
Queue function making method for programmable-logic controller, involves processing received command, if controller does not processes command, and retrieving commands with priority, after controller has completed processing of commands Download PDFInfo
- Publication number
- DE102007048250A1 DE102007048250A1 DE200710048250 DE102007048250A DE102007048250A1 DE 102007048250 A1 DE102007048250 A1 DE 102007048250A1 DE 200710048250 DE200710048250 DE 200710048250 DE 102007048250 A DE102007048250 A DE 102007048250A DE 102007048250 A1 DE102007048250 A1 DE 102007048250A1
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- Germany
- Prior art keywords
- command
- plc
- commands
- terminals
- operations
- 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.)
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Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/46—Multiprogramming arrangements
- G06F9/54—Interprogram communication
- G06F9/546—Message passing systems or structures, e.g. queues
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2209/00—Indexing scheme relating to G06F9/00
- G06F2209/54—Indexing scheme relating to G06F9/54
- G06F2209/548—Queue
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- Engineering & Computer Science (AREA)
- Software Systems (AREA)
- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Programmable Controllers (AREA)
Abstract
Description
HINTERGRUND DER ERFINDUNGBACKGROUND OF THE INVENTION
1. Gebiet der Erfindung1. Field of the invention
Die Erfindung betrifft eine programmierbare Logiksteuerung (PLC), insbesondere eine solche mit Befehlswarteschlange zum Zwischenspeichern von Befehlen, wie sie von Operationen ausführenden Endstellen geliefert werden.The The invention relates to a programmable logic controller (PLC), in particular such a command queue for caching commands, as used by operations executing terminals to be delivered.
2. Beschreibung des Stands der Technik2. Description of the stand of the technique
Auf dem Gebiet der Fabrikautomatisierung gehen Entwicklungstrends dahin, für eine Zeit und Aufwand sparende Steuerung zu sorgen. Bei der herkömmlichen Fabrikautomatisierung werden Relais, Tastenschalter, Timer, Zähler und Erfassungsschalter dazu verwendet, für eine automatische Steuerung zu sorgen. Jedoch muss die Steuerungseinrichtung zum Steuern von Relais, Tastenschaltern, Timern, Zählern und Erfassungsschaltern für neue Anwendungen neu zugeschnitten werden. Daher wurde eine programmierbare Logiksteuerung (PLC) entwickelt, um für vielseitigere Steuerungsvorgänge zu sorgen.On In the area of factory automation, development trends go for one Time and effort-saving control to worry. In the conventional Factory automation will be relays, button switches, timers, counters and Detection switch used for automatic control to care. However, the controller needs to control Relays, button switches, timers, counters and detection switches for new ones Applications are re-tailored. Therefore, became a programmable Logic control (PLC) developed to provide more versatile control operations.
PLCs werden seit langem in der Industrie im großem Umfang verwendet, und sie ermöglichen es, in einer Umgebung, in der mechanische und elektrische Elemente integriert sind, jederzeit einen Steuerungsbefehl in sie zu laden. Daher kann eine PLC eine Maschine durch einen eingegangenen Steuerungsbefehl steuern.PLCs are being widely used in industry for a long time, and they enable it, in an environment where mechanical and electrical elements are integrated at any time to load a control command into them. Therefore, a PLC can input a machine through a received control command Taxes.
Die
ZUSAMMENFASSUNG DER ERFINDUNGSUMMARY OF THE INVENTION
Der Erfindung liegt die Aufgabe zugrunde, eine programmierbare Logiksteuerung (PLC) mit einer Warteschlangenfunktion zu versehen. Nicht verarbeitete Befehle werden in der Warteschlange zwischengespeichert, wenn die PLC mit einer aktuellen Aufgabe beschäftigt ist. Daher kann jede der Operationen ausführenden Endstellen ohne Datenverluste eine Antwort erhalten.Of the Invention is based on the object, a programmable logic controller (PLC) with a queue function. Not processed Commands are cached in the queue when the PLC is busy with a current task. Therefore, everyone can performing the operations Terminals without data loss received a response.
Demgemäß sind durch die Erfindung eine programmierbare Logiksteuerung (PLC) mit Warteschlangenfunktion sowie ein zugehöriges Verfahren geschaffen. Die PLC mit Warteschlangenfunktion empfängt als Erstes von einer von mehreren Operationen ausführenden Endstellen über eine Befehle-Sende/Empfangs-Einheit einen einge gangenen Befehl. Die Befehle-Sende/Empfangs-Einheit beurteilt, ob die PLC zu diesem Zeitpunkt einen Befehl verarbeitet. Der Prozessor verarbeitet als Erstes den eingegangenen Befehl, und er liefert eine Antwort zurück, wenn gerade kein Befehl verarbeitet wird. Wenn der Prozessor den ersten eingegangene Befehl verarbeitet, platziert die Befehlsempfangseinheit einen zweiten eingegangenen Befehl in einer Befehlswarteschlange, und sie versieht diesen zweiten eingegangenen Befehl mit einer Prioritätseinstellung. Wenn die PLC ihre aktuelle Aufgabe beendet, verarbeitet sie denjenigen Befehl in der Warteschlange, der über die höchste Verarbeitungspriorität verfügt. Daher können die PLC-Prozessoren jeden Befehl von den Operationen ausführenden Endstellen auf sequenzielle Weise verarbeiten.Accordingly, by the invention a programmable logic controller (PLC) with queuing function and an associated Procedure created. The PLC with queuing function receives as First of one of several operations executing terminals via a Command Transmit / Receive Unit a received command. The commands send / receive unit judges whether the PLC is processing a command at this time. The processor first processes the incoming command, and he returns an answer, if no command is currently being processed. When the processor releases the processing the first incoming command places the command receive unit a second command received in a command queue, and it provides this second incoming command with a priority setting. If the PLC completes its current task, processes it to those Command in the queue that has the highest processing priority. Therefore can the PLC processors each command from the executing terminals to sequential Process way.
KURZE BESCHREIBUNG DER ZEICHNUNGENBRIEF DESCRIPTION OF THE DRAWINGS
Die als neuartig angesehenen Merkmale der Erfindung sind in den beigefügten Ansprüchen speziell dargelegt. Die Erfindung selbst kann jedoch am besten unter Bezugnahme auf die folgende detaillierte Beschreibung derselben, die bestimmte beispielhafte Ausführungsformen der Erfindung beschreiben, in Verbindung mit den beigefügten Zeichnungen verstanden werden.The Features of the invention which are believed to be novel are set forth in the appended claims explained. However, the invention itself may best be understood by reference to the following detailed description of the same which certain exemplary embodiments of the invention, in conjunction with the accompanying drawings be understood.
DETAILLIERTE BESCHREIBUNG DER ERFINDUNGDETAILED DESCRIPTION THE INVENTION
Die
Wenn
eine erste Operationen ausführende Endstelle
Wenn
die MCU
Die
Wenn
der erste Befehl
Unter
Bezugnahme auf die
Wenn
der erste Befehl
Nachdem
die MCU
Nachdem
der zweite Befehl
Wie es aus der obigen Beschreibung ersichtlich ist, ermöglichen es die PLC mit Warteschlangenfunktion und das Verfahren zum Bereitstellen der Warteschlangenfunktion gemäß der Erfindung meh reren Operationen ausführenden Endstellen, gleichzeitig auf eine PLC zuzugreifen.As it can be seen from the above description it is the PLC with queuing and the method of providing the queue function according to the invention carry out several operations Terminals to access a PLC at the same time.
Obwohl die Erfindung unter Bezugnahme auf ihre bevorzugte Ausführungsform beschrieben wurde, ist es ersichtlich, dass sie nicht auf die Einzelheiten derselben eingeschränkt ist. In der vorigen Beschreibung sind verschiedene Ersetzungen und Modifizierungen vorgeschlagen, und andere werden dem Fachmann ersichtlich. Daher sollen alle derartigen Ersetzungen und Modifizierungen vom Schutzumfang der Erfindung, wie sie in den beigefügten Ansprüchen definiert ist, umfasst sein.Even though the invention with reference to its preferred embodiment has been described, it is apparent that they are not on the details restricted is. In the previous description are various substitutions and Modifications are suggested, and others will become apparent to those skilled in the art. Therefore, all such substitutions and modifications of Scope of the invention as defined in the appended claims is, includes.
Claims (5)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200710048250 DE102007048250A1 (en) | 2007-10-08 | 2007-10-08 | Queue function making method for programmable-logic controller, involves processing received command, if controller does not processes command, and retrieving commands with priority, after controller has completed processing of commands |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200710048250 DE102007048250A1 (en) | 2007-10-08 | 2007-10-08 | Queue function making method for programmable-logic controller, involves processing received command, if controller does not processes command, and retrieving commands with priority, after controller has completed processing of commands |
Publications (1)
Publication Number | Publication Date |
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DE102007048250A1 true DE102007048250A1 (en) | 2009-04-09 |
Family
ID=40418210
Family Applications (1)
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DE200710048250 Withdrawn DE102007048250A1 (en) | 2007-10-08 | 2007-10-08 | Queue function making method for programmable-logic controller, involves processing received command, if controller does not processes command, and retrieving commands with priority, after controller has completed processing of commands |
Country Status (1)
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DE (1) | DE102007048250A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2876841A1 (en) | 2013-11-22 | 2015-05-27 | Schneider Electric Industries SAS | Control device able to connect to a communication network linking a control interface and an equipment |
-
2007
- 2007-10-08 DE DE200710048250 patent/DE102007048250A1/en not_active Withdrawn
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2876841A1 (en) | 2013-11-22 | 2015-05-27 | Schneider Electric Industries SAS | Control device able to connect to a communication network linking a control interface and an equipment |
FR3013927A1 (en) * | 2013-11-22 | 2015-05-29 | Schneider Electric Ind Sas | CONTROL DEVICE COULD CONNECT TO A COMMUNICATION NETWORK CONNECTING A CONTROL INTERFACE TO AN EQUIPMENT |
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Legal Events
Date | Code | Title | Description |
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OP8 | Request for examination as to paragraph 44 patent law | ||
R002 | Refusal decision in examination/registration proceedings | ||
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |
Effective date: 20120501 |