Siemens PLC Controller is like an industrial digital computer designed for manufacturing processes like assembly lines or robotic devices. It is used to control activities that require high reliability controls , ease in programming and process fault diagnosis. This Siemens PLC Controller combines powerful airthmaetic operations ability, high processing speed, flexibility and precision. It has the ability to solve wide range of processing tasks universally with high throughput rates. It is highly used in automobile industries to provide ruggedized and easy programmable controllers as an alternative of timers, hard wired relays and sequences. It is best suitable for harsh environment.