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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Integration av konstruktionsdatabas och styrsystem

Söderhielm, Kristofer January 2012 (has links)
The Mission at ÅF Industry in Norrkoping was about optimizing bulk data handling while importing process tag types from their construction database into the Process Controlled System of type Siemens PCS7.I found three different methods to solve the task. Two of them were using different software from Siemens under the premise that the report from the database was corrected as needed. The third variant was manually creating the circuits. All methods worked out fine but there were times when one was better than another.To solve this task I had access to all software presented in chapter 2 “Programvara” (=Software). I also had a close cooperative with employers at ÅF that works with the system today and also with personal att Siemens AG in Germany and Sweden.
2

Integrering av styrsystem till SIMATIC PCS 7 : En fördjupning i SIMATIC PCS 7/Open OS

Johansson, Simon January 2017 (has links)
Denna studie ämnar undersöka hur styrsystem från Siemens som inte ingår i ordinarie produktbibliotek till deras processkontrollsystem PCS 7 kan integreras. Integreringen kommer utföras med hjälp av ett tilläggspaket till PCS 7, SIMATIC PCS7/Open OS. Styrsystemen som ska integreras i detta arbete är vanligt förekommande på industrier idag, SIMATIC S7-300/1500. Dessa styrs normalt inte via processkontrollsystem, mer vanligt är att de styrs lokalt via en operatörspanel intill maskinen. Genom att integrera dessa till processkontrollsystem kommer de att kunna styras från större kontrollrum, samtidigt som fördelarna med att integrera moderna styrsystem med ny teknik erhålls i produktionen. En annan del av studien har för avsikt att jämföra tidigare fall av liknande integreringar där andra typer av tekniker har använts. Dessa fall har visat att det finns idag standardiserade tekniker för att integrera enstaka fältenheter så att dessa kan hanteras av övergripande kontrollsystem. I en av studierna som undersöks, där det har gjorts försök att integrera funktionen av ett styrsystem som kontrollerar flertalet fältenheter, finns det enligt studien begränsningar i tekniken som används. Enligt Siemens AG ska dock tillägget SIMATIC PCS 7/Open OS klara att integrera ett styrsystem med dess fulla funktionalitet till processkontrollsystemet PCS 7. Resultatet av arbetet visar att integrering av styrsystemen till PCS 7 genom att använda tillägget är möjlig och styrsystemets fulla funktion kunde erhållas från ett PCS7-HMI. För att integreringen med tilläggspaketet ska ske smidigare rekommenderas att förberedelser, såsom att skapa bibliotek både i PCS 7 och i styrsystemet utförs innan integreringsarbetet påbörjas. Biblioteken bör innehålla funktionsblock förexempelvis motordrifter i styrsystemet och grafikelement som motsvarar dessa i PCS7. / This study will focus on how Siemens controllers that are not listed in the productlibrary of the process control system PCS 7, can be integrated. The integration willbe performed using an option for PCS 7 (SIMATIC PCS 7/Open OS). The controllers to be integrated in this work are commonly found in industries today, the Siemens controllers SIMATIC S7-300/1500. These are usually not controlled from a processcontrol system, they are more commonly controlled via an operator panel next to the machine. By integrating these controllers into the process control system, they can be controlled from larger control rooms, and the production will acquire the benefits of using modern controllers. Previous cases with similar components, where other integration techniques was used has been evaluated. In these cases the integration have shown that there are today standardized techniques for integrating single field devices so that they can be managed by process control systems. In another study investigated, where attempts have been made to integrate the function of a controller that is controlling several field devices, the study showed limitations in the technique used. According to Siemens AG however, SIMATIC PCS 7/Open OS will be able to integrate acontroller with its complete functionality into the process control system PCS 7. The result of the work shows that integration of the controllers to PCS 7 by using the option package is possible, and the controller could be fully operated from a PCS 7-HMI. In order to make the integration with the optional package more user-friendly, it is recommended that preparations be made before integrating. Such as preparing a library in both PCS 7 and in the controller to be integrated, which are containing for example function blocks in the controller side and graphic elements corresponding to these function blocks in the PCS 7-HMI side.
3

Kompilátor zdrojového kódu pro PLC SIMATIC / Compiler of source code for SIMATIC PLC

Kubát, Zdeněk January 2014 (has links)
The thesis discusses an independent compiler for STEP 7 and WinCC V7.0 applications of the SIEMENS company. The compiler processes source files generated in STEP 7 and subsequently saves the processed data in .xls type intermediatefiles. The data of the intermediatefiles serve as source data for functions generating files with tags to be imported into WinCC V7.0. The compiler was created using the C# programming language in Visual Studio 2010.
4

Kompilátor zdrojového kódu pro PLC SIMATIC / Compiler of source code for SIMATIC PLC

Kubát, Zdeněk January 2014 (has links)
The thesis discusses an independent compiler for STEP 7 and WinCC V7.0 applications of the SIEMENS company. The compiler processes source files generated in STEP 7 and subsequently saves the processed data in .xls type intermediatefiles. The data of the intermediatefiles serve as source data for functions generating files with tags to be imported into WinCC V7.0. The compiler was created using the C# programming language in Visual Studio 2010.
5

Aspects of the choice of sampling frequency in the control system of a gas turbine

Öijerholm, Mikael January 2009 (has links)
<p>At Siemens, plcs are used to control the gas turbines, and to execute the code in the plcs cyclic interrupts are used. If the execution time for the interrupt becomes close to the cyclic time of the interrupt the load of the plc increases. High load levels can lead to situations were segments of code are not executed on time or even not executed at all. In this thesis an analysis of the regulators used to govern a gas turbine has been performed. The purpose of the analysis is to study the performance of the regulators for different cycle times with the aim to be able to reduce the load by sampling more slowly.</p><p>To determine the load contribution from each regulator a review of the regulators and their execution times has been made. For the analysis the Matlab program Simulink has been used to make models of the regulators, which have then been sampled at different rates. With this information it is possible to determine for which cycle times each regulator has accepetable performance and how much load each regulator contributes with. A save of load of approximately 2 percent can be obtained without loosing too much performance.</p>
6

Aspects of the choice of sampling frequency in the control system of a gas turbine

Öijerholm, Mikael January 2009 (has links)
At Siemens, plcs are used to control the gas turbines, and to execute the code in the plcs cyclic interrupts are used. If the execution time for the interrupt becomes close to the cyclic time of the interrupt the load of the plc increases. High load levels can lead to situations were segments of code are not executed on time or even not executed at all. In this thesis an analysis of the regulators used to govern a gas turbine has been performed. The purpose of the analysis is to study the performance of the regulators for different cycle times with the aim to be able to reduce the load by sampling more slowly. To determine the load contribution from each regulator a review of the regulators and their execution times has been made. For the analysis the Matlab program Simulink has been used to make models of the regulators, which have then been sampled at different rates. With this information it is possible to determine for which cycle times each regulator has accepetable performance and how much load each regulator contributes with. A save of load of approximately 2 percent can be obtained without loosing too much performance.
7

Programmerning av en industrikap med GRAPH 7

Duzel, Adnan January 2008 (has links)
This essay is divided in several different parts, but all are tied up together by a fact that we want to increase productivity. We hope to do that by programming the PLC and to reach this with a better security for the person how are going to handle the cutting machine under it’s cutting process. We should as well look for some other ways to come up with better instructions and way to work and handle yourself during work. This programming is done in GRAPH7. This is a sequence block program from Siemens. / Examensarbetet består av flera olika delar, som alla utgår från det faktum att man vill öka produktionen . Samtidigt vill man ha säkra maskiner som är användarvänliga. De ska även kunna uppdateras av personalen på plats. Min uppgift är att programmera en sådan maskins styrsystem med hjälp av en PLC. Det finns en maskin som redan används; men företaget funderar på att bygga en till, om det skulle behövas för att öka produktionen Det jag skall göra är att skapa ett program till en sådan maskin för att användas i framtiden. Ytterligare en uppgift var att fel söka den redan befintliga maskinen och komma med förslag på förbättringar. Denna programmering gjordes i GRAPH 7 som är ett program från Siemens. Programmet är uppbyggt i sekvensblock.
8

Programmerning av en industrikap med GRAPH 7

Duzel, Adnan January 2008 (has links)
<p>This essay is divided in several different parts, but all are tied up together by a fact that we want to increase productivity. We hope to do that by programming the PLC and to reach this with a better security for the person how are going to handle the cutting machine under it’s cutting process. We should as well look for some other ways to come up with better instructions and way to work and handle yourself during work. This programming is done in GRAPH7. This is a sequence block program from Siemens.</p> / <p>Examensarbetet består av flera olika delar, som alla utgår från det faktum att man vill öka produktionen . Samtidigt vill man ha säkra maskiner som är användarvänliga. De ska även kunna uppdateras av personalen på plats. Min uppgift är att programmera en sådan maskins styrsystem med hjälp av en PLC. Det finns en maskin som redan används; men företaget funderar på att bygga en till, om det skulle behövas för att öka produktionen Det jag skall göra är att skapa ett program till en sådan maskin för att användas i framtiden. Ytterligare en uppgift var att fel söka den redan befintliga maskinen och komma med förslag på förbättringar.</p><p>Denna programmering gjordes i GRAPH 7 som är ett program från Siemens. Programmet är uppbyggt i sekvensblock.</p>
9

Aplikace řídicího systému Simatic pro řízení balícího stroje / Application of the Simatic control system for the packaging machine control

Urbánek, Tomáš January 2014 (has links)
Masters thesis deals with the SIMATIC, which is the process control system from Siemens. Simatic belongs to the group of so-called programmable logic controllers (English Programmable Logic Controller). It is a microcomputer that processes the instructions in real time. I have designed a control algorithm and HMI visualization in my Masterś thesis. Moreover,my attention is focused on PLC S7 - 300. The S7-313C is used for implementations. The proposed solution has been tested and operated in real conditions
10

Řízení stejnosměrného motoru pomocí PLC Simatic S7-200 / DC motor control by PLC Simatic S7-200

Nekula, Pavel January 2009 (has links)
Diploma thesis deal with connection of DC motor with programmable logic controller Simatic S7 – 224XP in order to attitude control turning and rotation speed of DC motor.Major goal of diploma thesis was to suggest and develope modul for connection of DC motor with programmable automatic machine. Further goal was to make a programmatic equipment for this modulus and programmable controller. Final task was visualization exercise by the help of touch screens, on which will be set and monitor values of position turning and rate of swelling of engine speed.

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