Abstract: Supervisory Control and Data Acquisition (SCADA) systems are widely used in industrial control processes. SCADA focuses on the supervisory level, it is a purely software package that is positioned on top of hardware to which it is interfaced. The main purpose of this paper is to implement the hardware components for the controlling DC motor process and to interface between master station and control unit for controlling the data. It also concentrates on the design in terms of their architecture and their interface to the process hardware due to increasing usage of a different level of control system which has a different voltage. The Pulse Width Modulation (PWM) used as switching to control the speed of the DC motor.

Keywords: Supervisory Control and Data Acquisition (SCADA), DC motor, Pulse Width Modulation (PWM).