Programmable Logic Controllers (PLCs) are important elements in industrial automation processes that are applied to automate the manufacturing process by controlling different machines through PLCs. Some of the applications for PLCs are automotive industries, packaging industries, food processing industries, pharmaceutical industries, textile industries, material handling, and power plants. PLCs work constantly to check the inputs generated by sensors and perform logical operations according to programming. Finally, PLCs control different outputs such as motors, valves, relays, and actuators. One of the main benefits of using PLCs is the improvement of efficiency and minimization of human involvement. They can carry out various tasks at once, such as sequencing, timing, counting, processing information, and controlling motions. With a faster processing speed and precise control, PLCs enable the growth of productivity and decrease in errors. The flexibility offered by these systems makes it easier to adjust the manufacturing process via programming without significant modifications of hardware. PLC systems are constructed with durable construction capable of working in harsh environments like exposure to dirt, vibration, change in temperatures, and electromagnetic disturbances. PLC systems use various forms of communication and interface easily with HMIs, SCADA systems, motor control systems, sensors, and other industrial machinery through their diagnostic capabilities, which make it easy to troubleshoot any problems. As a result of their durability, ability to scale up, and ability to program, PLC systems have become critical for industrial automation systems. These help companies increase their efficiency and productivity through reduced cost and increased efficiency.