Table of Contents
Advertisement
Manual
00809-0500-4881
8
F
OUNDATION
8.1
F
OUNDATION
8.1.1
Overview
F
OUNDATION
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
technology.
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
F
OUNDATION
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 portion of the total system operation by
implementing one or more function blocks.
8.1.3
Function blocks
Function blocks within the Fieldbus device perform the various functions required for
process control. Because each system is different, the mix and configuration of functions
Rosemount OCX8800C
Fieldbus
™
Fieldbus technology
™
Fieldbus is an all digital, serial, two-way communication system that
™
Fieldbus technology, but are presented as an overview for those not
F
™
OUNDATION
April 2023
Fieldbus an enabling
OUNDATION
Fieldbus
95
Advertisement
Table of Contents
