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Manual
00809-0500-4880
8
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8.1
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8.1.1
Overview
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interconnects field equipment, such as sensors, actuators, and controllers.
Fieldbus is a local area network (LAN) for instruments used in both process and
manufacturing automation with built-in capacity to distribute the control
application across the network. It can distribute control among intelligent field
devices on the plant floor and digitally communicate that information at high
speed that makes F
Emerson offers a full range of products from field devices to the DeltaV scalable
control system to allow an easy transition to Fieldbus technology.
The Fieldbus retains the features of the 4-20 mA analog system, including
standardized physical interface to the wire, bus powered devices on a single wire,
and intrinsic safety options, and enables additional capabilities such as:
•
Increased capabilities due to full digital communications.
•
Reduced wiring and wire terminations due to multiple devices on one set of
wires.
•
Increased selection of suppliers due to interoperability.
•
Reduced loading on control room equipment with the distribution of some
control and input/output functions to field devices.
•
Speed options for process control and manufacturing applications.
Note
The following descriptions and definitions are not intended as a training guide for
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familiar with Fieldbus and to define device specific attributes for the Fieldbus
system engineer. Anyone attempting to implement Fieldbus communications and
control with this transmitter must be well-versed in Fieldbus technology and
protocol and must be competent in programming using available tools, such as
DeltaV.
8.1.2
Introduction
A Fieldbus system is a distributed system composed of field devices and control
and monitoring equipment integrated into the physical environment of a plant or
factory.
Fieldbus devices work together to provide I/O and control for automated process
and operations. The Fieldbus Foundation provides a framework for describing
these systems as a collection of physical devices interconnected by a Fieldbus
network. One of the ways that the physical devices are used is to perform their
Rosemount OCX8800A
Fieldbus
™
Fieldbus technology
™
Fieldbus is an all digital, serial, two-way communication system that
™
Fieldbus an enabling technology.
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Fieldbus technology, but are presented as an overview for those not
F
Fieldbus
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December 2022
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