Rockwell Automation 20-COMM-S RS-485 DF1 Adapter User Manual

Page 52

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Glossary-2

Datalinks

A Datalink is a type of pointer used by some PowerFlex drives to
transfer data to and from the controller. Datalinks allow specified
parameter value(s) to be accessed or changed without using explicit
messages. When enabled, each Datalink consumes either four bytes or
eight bytes in both the input and output image table of the controller. The
drive determines the size of Datalinks.

DF1

An Allen-Bradley datalink layer protocol that combines features of
subcategories D1 (data transparency) and F1 (2-way simultaneous
transmission with embedded responses) of ANSI x3.28 specification.

DPI

DPI is a second generation peripheral communication interface used by
various Allen-Bradley drives and power products. It is a functional
enhancement to SCANport.

DPI Peripheral

A device that provides an interface between DPI and a network or user.
Peripheral devices are also referred to as “adapters” and “modules.” The
serial converter and PowerFlex HIM are examples of DPI peripherals.

DPI Product

A device that uses the DPI communications interface to communicate
with one or more peripheral devices. For example, a motor drive such as
a PowerFlex drive is a DPI product. In this manual, a DPI product is also
referred to as “product” or “Host.”

DriveExplorer Software

DriveExplorer software is a tool for monitoring and configuring
Allen-Bradley products and adapters. It can be run on computers running
Microsoft Windows 95, Windows 98, Windows NT (version 4.0 or
higher), Windows CE (version 2.0 or higher), Windows ME, Windows
2000, and Windows XP operating systems. DriveExplorer (version 2.02
or higher) can be used to configure this adapter and PowerFlex drives.
Information about DriveExplorer software and a free lite version can be
accessed at http://www.ab.com/drives/driveexplorer.

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