Rockwell-automation 1788-FFCT NI-FBUS Configurator User Manual Instrukcja Użytkownika Pobierz pdf (Strona 9)

1 Publication 1788-UM052B-EN-P - April 2002

Chapter

Fieldbus Overview

This chapter introduces fieldbus and the parts of a fieldbus network.

This chapter contains fieldbus information that will help you use the

NI-FBUS Configurator and solve problems with the configuration of

your fieldbus system. Refer to the Glossary for more explanation of

fieldbus terms and concepts. If you already have a basic knowledge

of fieldbus concepts, or if you want to start using the NI-FBUS

Configurator immediately, skip to Chapter 3, NI-FBUS

Configurator Overview.

Introduction to Fieldbus

The term fieldbus refers to an all-digital, two-way communication

system that connects control systems to instrumentation.

The Fieldbus Foundation is an organization that developed a fieldbus

network based on the work and principles of the ISA and IEC. The

goal of the Fieldbus Foundation is to help create products that use a

robust industrial network based on existing standards and other

proven technologies and to standardize using those sources.

OUNDATION Fieldbus, the communications network created by the

Fieldbus Foundation, is a protocol designed for robust, distributed

control in process control environments. Devices connected by

OUNDATION Fieldbus control a process by exchanging data.

Parts of a Fieldbus Network

There are six conceptual parts to a fieldbus network:

• links

• devices

• blocks and parameters

• linkages

• loops

• schedules

Descriptions of these parts can be found on the following pages.

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Rockwell-automation 1788-FFCT NI-FBUS Configurator User Manual Instrukcja Użytkownika Strona 9