Compare Foundation Fieldbus and Profibus for process control.

Foundation Fieldbus (FF): designed for process control, supports control in field (PID execution in transmitter), scheduled communication ensures deterministic response, power over bus, extensive device diagnostics, function blocks standardized. Profibus PA: process automation variant of Profibus, faster communication, simpler implementation, less field intelligence, uses MBP-IS physical layer. Selection factors: FF preferred for advanced diagnostics and field control; Profibus for simpler installations and hybrid plants. Both reduce wiring, enable digital diagnostics, and support asset management.