Using This Manual; Manual's Purpose; Audience; Vocabulary - Allen-Bradley 1779-KFMR User Manual

Manual's Purpose

Audience

Vocabulary

Using This Manual

This manual tells you about the Synchronous-Device/DHII Interface
(Cat. No. 1779-KFM) and the Redundant Synchronous-Device/DHII
Interface (Cat. No. 1779-KFMR). This manual tells you how to install
and use a 1779-KFM interface in a Data Highway II communication
network.
Plant electricians who install Data Highway II hardware need to read
Chapters 1 through 4 of this manual.
The people who program the synchronous RS-422/499 compatible device
need to read all but Chapter 3. To use the 1779-KFM interface, you must
know how to address the memory of Allen-Bradley programmable
controllers. In this manual, we assume that you know how to do this. If
you don't, refer to the appropriate manual for the controller you will be
using. Consult our Publication Index (Publication SD499) for a list of our
publications.
The redundant 1779-KFMR interface has all of the functions of the
1779-KFM interface. Therefore, when we refer to the 1779-KFM
interface in this manual it applies to both. We will only mention the
redundant 1779-KFMR interface in describing a difference.
When referring to an Allen-Bradley programmable controller in this
manual, we use the Allen-Bradley registered trademark PLC.
Some node interfaces have the function of interfacing with an intelligent
device, such as a computer. These devices must have the computer-like
intelligence to communicate in the prescribed protocol. Although some of
these devices may not be thought of as computers, for simplicity we refer
to them all in this manual as computers.
1
Chapter
1 1