DEVELOPMENT OF LOW COST WIRELESS PLC

Now a days a significant growth in wireless technology has occurred which enabled innovation in the field of wireless technologies. This innovation in wireless technologies leads automation in industrial, residential and commercial sectors. Presently in many industries Programmable logic controller is used to control the entire process automatically without errors and with less human interference. Rapid growth in wireless technology has brought wireless system in existence which removed cabling infrastructure and obtain efficient control. PLCs are used to automate entire process applications in homes and small scale industries. To develop wireless system we need to have a wireless control which is achieved by replacing existing plcs with wireless plcs. But it is inconvenient to use wireless PLCs which are costly for small process applications in small scale industries. This paper represents a new method for converting the existing wired plc into wireless plc by configuring wireless module using TMFT software as communication interface between plc and small process, the process used here is called batch process and controlled through HMI. Keywords— PLC, XBEE, TMFT software and HMI