Mobile Controlled Smart PLC with Integrated SMS Troubleshooting Technique

PLC´s (programmable logic controllers) are the control hubs for a wide variety of automated systems and processes. Advanced control features, network connectivity and device interoperability are all capabilities increasingly demanded in a modern industrial application. To get in-depth knowledge of any system requires thorough studies of the system up to the designing level; this paper provides better vision for designing aspects of any basic PLC for the amateur(s) or experts already working with the system. This paper emphasizes on various aspects like designing issues related to PLC, designing algorithms, implementation of DTMF connectivity and SMS service module to ease the error detection in PLC systems so as to reduce the production losses. The enhancement in approachability in PLC systems can be achieved by implementing the designed DTMF module into PLC, by virtue of which accessibility of the respective system can be achieved from any location of the world. The integral feature of any smart system that is password protection has also been framed in the designed algorithm.