Rockwell Automation 1771ACN/B_1771ACNR/B,D17716.5.123 U.MNL CONTROLNET ADAPTER - Manual (Page 13)

Introducing the ControlNet Adapter Module 1–3
Publication 1771-6.5.123 – May 1996
Network Access Port (NAP)
The network access port (Figure 1.1) provides a bidirectional
electrical interface for programming, maintenance, and I/O
monitoring devices in both redundant and non-redundant
connections. Connecting programming terminals to the network
using the NAP is described in Chapter 2.
ControlNet Connectors
Cable connection to the module is through standard BNC connectors
on the module frontplate.
trunkline A =
2
➊ End device supporting redundant cabling is a 1771-ACNR.
PLC-5/20C or
PLC-5/40C end device ➊ end device ➊
Terminator Terminator
Terminator Terminator
B
A
trunkline B =
Example of a Redundant System
Refer to the ControlNet Cable System Planning and Installation user
manual, pub. no. 1786-6.2.1 for more information.
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