Rockwell Automation Publication CNET-UM001F-EN-P - February 2018  59 
Chapter 4 
Control I/O 
This chapter explains how a controller controls distributed I/O over a 
ControlNet network. 
Topic  Page 
Set Up the Hardware on page 95  56 on page 95 
Requested Packet Interval (RPI) on page 60  56 on page 60 
Communication Format on page 60  57 on page 60 
Add a Remote Adapter on page 66  63 on page 66 
Add Distributed I/O on page 67  63 on page 67 
Access Distributed I/O on page 69  65 on page 69 
Validate Connections on page 71  68 on page 71 
To control distributed I/O over a ControlNet network, you must do the 
following: 
•  Add local and remote ControlNet communication modules to your 
Logix Designer project. 
When you create a new Logix Designer project with the CompactLogix 
1769-L32C or 1769-L35CR controller, the Controller Organizer creates a 
ControlNet port in the local chassis. In this case, you do not need to add a 
separate local communication module. 
•  Add distributed I/O to your Logix Designer project. 
•  Schedule the ControlNet network via RSNetWorx for ControlNet 
software. 
•  Use the I/O information in the Logix Designer application. 
You can also validate connections to distributed I/O when controlling it over 
a ControlNet network. This task is particularly useful when one or more of 
the connections are not working but is not required, especially when all 
connections appear to work normally.