Manual

Chapter 1
Publication 1771-6.5.123 – May 1996
Introducing the ControlNet
Adapter Module
This chapter describes the ControlNet adapter modules’ (cat. no.
1771-ACN and -ACNR):
• features
• hardware components, including
• diagnostic indicators
• communication reset pushbutton
• network access port (NAP)
• ControlNet connectors
• network address switch assemblies
The 1771-ACN and -ACNR adapters control 1771 remote I/O on the
ControlNet network. The ControlNet network is a communication
architecture that allows the exchange of messages between
Allen-Bradley products and certified third-party products.
The 1771-ACN and -ACNR Adapters features include:
• high speed data transfer
• diagnostic messages
• local communication network access through the network access
port (NAP)
• redundant media (1771-ACNR only)
The adapter module consists of the following major components:
• ControlNet status indicators
• status display
• communication reset pushbutton
• network access port (NAP)
• ControlNet connectors (one on 1771-ACN; two on 1771-ACNR)
• module net address switch assemblies (on top of module)
Chapter Objectives
Module Description and
Features
Hardware Components