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Plc Scada

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Plc Scada
CHAPTER 1
1.1 Introduction: After going through tedious working days isn’t it a wonderful thing if people can just relax on the sofa and control the temperature in the living room, just with single button the room temperature can be controlled automatically so when the room temperature is too cold the heater will operate to produce a regulated temperature and when the room temperature is too high the cooling system will operate to produce the desired temperature.

1.2 Objectives:
There are four objectives to be achieved in this project. Below are the following objectives:
1.2.1 To design appropriate circuit for temperature control.
1.2.2 To design software using plc for temperature control.
1.2.3 To interface plc module with the input and output components.
1.2.4 To design a prototype system for temperature control.

1.3 Scope of the Project:
To achieve the objectives and purpose of the project , the scope of study and research can be divided into following areas:
1.3.1 Design and develop the prototype of the temperature control system by using plc as the controller to enhance the existing system. * This project will develop the prototype which is respect to the actual system.
1.3.2 The development of hardware and software. * Hardware 1) Literature study of the hardware including PLC and others components. 2) PLC will used as the brain of the project. 3) Thermostat sensor will be used as the sensor for temperature. 4) DC power supply. 5) Fan will replace or represent the air conditioning system. 6) Hair dryer will replace or represent the heater system.

* Software 1) Several literature review of the CX-Programmer for the PLC Allen Bradley 2) Ladder diagram as the source code to the PLC.

1.4 Problem Statement: Temperature controller is really important to monitor and adjust temperature without much operator involved. Without proper temperature control facility the system could be

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