At one time, it becomes thought that commercial automation networks had been specific from the types of networks used for IT. In reality, the earliest automation networks had been not even taken into consideration as networks in any respect however as serial buses. The time period field bus stems from those minds. Naturally, each network turned into designed to solve one problem, and then extended to resolve different, perhaps related, troubles. Since each dealer’s business version changed into directed towards a barely extraordinary business niche, the ensuing bus became out to be different from every other.