Profibus is one of the new generations of fieldbus I/O bus networks. Profibus is a fieldbus used to connect field devices at the plant level and communicate data between field devices and control systems at the enterprise level. Profibus also helps to attain better yield and higher product quality through the delivery of better and up-to-date data to operations. Profibus uses a multi drop single cable to connect the devices. This method is cost effective especially for larger sites. It is easy to find faults as it is a single cable. Profibus is the world’s leading fieldbus system. Many vendor companies have developed profibus capable devices for discrete and process automation. In a profibus, less hardware is needed which indirectly leads to lowered installation and life-cycle costs. Among these fieldbuses, profibus is the prominent open fieldbus system and it enjoys worldwide acceptance. Furthermore, all leading manufacturers of automation technology ...