A Fieldbus is an industrial network system for real-time distributed control.
A complex automated industrial system - say a manufacturing assembly line - usually needs an organized hierarchy of controller systems to function.
In this hierarchy there is usually a Human Machine Interface (HMI) at the top, where an operator can monitor or operate the system.
This is typically linked to a middle layer of programmable logic controllers (PLC)...
preview:
http://en.wikipedia.org/wiki/Fieldbus
5/22/2007
