PLC (Programmable Logical Controller) is an automation device which is used in the production departments of the factories or in the control of similar processes. Unlike normal computers, the PLC has several inputs and outputs (I / O). The biggest benefit is that they are designed to withstand electrical noise, temperature imbalances and mechanical impacts. PLCs of different brands load an operating system of their own. This supervisory system scans the input information at invisible speeds and works to respond to the corresponding output information in real time. PLC plays a major role in the production of more and better quality products in a short time, and production with very low error rates.