Rockwell Automation 1779-KP3R DATA HIGHWAY II - Manual (Page 7)

Chapter
1
1-1
Overview
This chapter serves as an introduction to the Allen–Bradley Data Highway
II PLC–3 Communication Interface Module and contains the following
sections:
Introducing the 1779–KP3
Data Highway II Overview
Data Highway II Communication
Allen–Bradley Communication Interface Modules
This information is meant to provide you with a general overview of these
topics. For further detailed discussions of any of the subjects listed above,
refer to the Preface section titled Related Publications. If you are already
familiar with these subjects, you can proceed to Chapter 2.
The 1779–KP3 is a Data Highway II communication interface module
that allows you to connect your PLC–3

Programmable Controller to the
Data Highway II network, providing you with the ability to communicate
to:
other nodes on your Data Highway II link
nodes on another Data Highway II link
Data Highway Plus nodes on a Data Highway Plus sub–network
The 1779–KP3 operates in a single slot of an Allen–Bradley PLC–3
chassis. The front of the module (figure 1.1) contains:
LEDs that indicate the state of the module and the state of its
connection to the network
two ports for use in a backed–up system
a single thumbwheel switch that identifies the KP3 interface module
from other KP3 interface modules in the PLC–3 chassis
three thumbwheel switches that determine the node address
a single Data Highway II auxiliary access port that is reserved for
future use
The front panel of the 1779–KP3R Module is shown in Appendix A
(figure A.1) of this manual.
Chapter Objectives
Introducing the 1779-KP3