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.
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