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Foundation Fieldbus





Foundation Fieldbus Components     

Foundation Fieldbus is a communication protocol and physical method to interconnect smart devices such as temperature transmitters, pressure transmitters and valve actuators. The physical layer conforms to ISA SP50.02 and IEC 1158-2 standards for fieldbuses.

Fieldbus technology allows many smart devices to share one communication medium. The digital communication signal is superimposed onto a DC carrier. This reduces the amount of terminations to connect all the field devices to a host system and allows greater flexibility for future additions of I/O points.

A Foundation Fieldbus device is addressable and can store and transmit data. The devices can store values, track changes and use pre-set alarms to trigger. Based on pre-defined tag names host systems can read transmitter values such as temperature and pressure to set values of a valve actuator. Digital signal encoding is done using Manchester BiPhase-L and error checking is done with the CRC method. Foundation Fieldbus has two types of devices - A Basic Device (BD) which reads inputs, track values and set outputs if programmed to do so - A Link Active Scheduler (LAS) performs the same features as a BD and handles network communication timing between all the active devices on the network. More about Foundation Fieldbus from Foundation Fieldbus website.


Foundation Fieldbus Multibarrier

Foundation Fieldbus Displays

Foundation Fieldbus Cable
in bulk

Foundation Fieldbus I/O Stations

Foundation Fieldbus IP67
Junction Boxes

Foundation Fieldbus IP20
Junction Boxes


Foundation Fieldbus Bus Tees

Foundation Fieldbus 7/8" Cordsets
Cables (any length)
with Pre-Moulded Connectors


Foundation Fieldbus M12 Cordsets
Cables (any length)
with Pre-Moulded Connectors

Foundation Fieldbus
Field-Wireable Tees

Foundation Fieldbus 7/8" Bus
Connectors Field-wireable

Foundation Fieldbus M12 Bus Connectors Field-wireable

Foundation Fieldbus Terminating Resistors

Foundation Fieldbus Surge Suppressors

Foundation Fieldbus Gender Changers & Corners

Foundation Fieldbus
Power Supply Conditioner