Unleash the Power of FOUNDATION Fieldbus Instrumentation. FOUNDATION fieldbus devices are more than PV generators. They are also information servers with advanced diagnostics that alert the user to process problems and support Predictive Maintenance. The Function Blocks in Ff devices such as PID, Signal Characterizer, and Integrator allow users to link Ff devices to build control and monitoring loops independent of a central control host. Learn how to configure "Control in the Field" applications using a simple web server interface module.