Publication: Subject matter is the development of an application for the data storage from PLC
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2010-01-12
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2010-02-19
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Abstract
Final degree project on the University CARLOS III of Madrid, supervised by Dr. Albert Banchs, department of telematics. Graduation of Technical Engineer of Telecommunications Specialized on Image and Sound. Subject-matter is the data storage from PLC. A Programmable Logic Controller (PLC) is a computer that is specially designed for precess controlling. For example cooling down the temperature in a room is a process. Keeping this temperature constant at a desired temperature (e.g. -18°C) over time is a process control. The temperature is the controlled variable and the input variable at the same time. The value of this variable decides wether to cool down or not. There are some industrial processes where a small variation of the process parameters can have as consequence that the final product will be deficient. Easy to imagine in processes of the automobile industry. In other sectors like the petrochemical sector a process can be the mixture of some highly explosive substances that only can be mingled at a certain temperature. In that case if a process goes out of balance it would endanger human lives. Therefor the human supervising of processes is important and necessary. The result of this project is the implementation of a program that is capable to receive data which are transmitted by a Programmable Logic Controller (PLC) and to store them on a remote accessible network router. This will simplify enormously the remote supervising of a PLC controlled processes. Step by step we go through the development of this application were I am starting telling my own experiences with the programming of PLC devices and controlling industrial processes. We will also review the basic components of process controlling that are in use in this sector and some details of all the equipment and their architectures that surrounds this project. The program I developed is explained in detail and also the different functions and the way how I solved several problems. Finally some testing results and conclusions of my work will be exposed.
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Control automático, Microprocesadores, PLC (Programmable Logic Controller)