Pengendalian Pintu Gerbang Otomatis Berbasis Programmable Logic Control (PLC)

Abstract

Has designed a safety device gate by using password of handphone or PLC Omron Sysmac C20-based manual button. Decoder DTMF was used to converse DTMF signal from handphone into binary code form. Four-bit binary data produced by DTMF was then transmitted to demultiplexer set to gain output data readable to PLC. This device could be applied as opening or closing system of gate that can be controlled remotely or near distance. This device will produce the sound or syrene in incorrect enter of password, this was intended to prevent the use of device from unauthorized individuals.