Interbus, the open sensor/actuator bus from Phoenix Contact, has been confirmed as the world’s leading fieldbus in nodes shipped, according to a world-wide study carried out by ARC, the American market research organisation.
It puts Interbus’ market share at 37.4%, followed by LonWorks and Profibus – contradicting the recent German Consultic findings, which covered the European market, and found Profibus leading.
The ARC report, Device Network and Fieldbus Worldwide Outlook, says that the recently introduced InterBus loop sensor bus makes it the only system which ensures universality from the sensor to the control level.
It also states that the single master-slave architecture is the most popular – and that in five years, two-thirds of all fieldbus systems sold will be based on it.
ARC expects annual growth rate to exceed 30% over the next five years, leading to 9 million fieldbus nodes by the year 2001.
* According to the Profibus Group, Profibus is the first open standard fieldbus used in real process applications. It cites 10 projects, including four over $3.5 million, on Profibus PA. Bitburger Brewery, Wacker Chemie, Shell Hamburg (Germany) and ICI Billingham are among them.