Implementation of Supervisory Control and Data Acquisition - SCADA on a PLC and VFD Controlled Digital Mixing Plant Using TIA Portal

This paper outlines the design and implementation of SCADA based digital mixer using the Siemens PLC S7-1200 CPU 1214C DC/DC/RLY as the system controller with provision of the algorithm and the equipment needed. This work will give wireless controlling and monitoring [1] of volume, flow rate of liquid tanks and mixer impeller’s frequency in real time. The volume of input liquid given by the user is in litres and the system ensures the flow of same volume as per process requirement. For this purpose a plant is designed consists of a mixing tank and two supply tanks along with flow sensors. The process is controlled by ladder logic diagram and a wireless node i.e. SCADA PC designed on TIA Portal.