Rockwell Automation 20-COMM-ER 20-COMM-ER Dual-Port EtherNet/IP Communication Adapter User Manual - Manual (Page 79)

Rockwell Automation Publication 20COMM-UM015B-EN-P - July 2013 79
Chapter
5
Using the I/O
This chapter provides information and examples that explain how to control,
configure, and monitor a PowerFlex 7-Class drive or SMC using the configured
I/O.
About I/O Messaging
On CIP-based networks, including EtherNet/IP, I/O connections are used to
transfer the data which controls the PowerFlex drive or SMC and sets its
Reference. I/O can also be used to transfer data to and from Datalinks.
The adapter provides many options for configuring and using I/O, including the
following:
• Configuring the size of I/O by enabling or disabling the Logic Command/
Reference and Datalinks.
• Setting a Master-Slave or Peer-to-Peer hierarchy.
Chapter 3 , Configuring the Adapter , and Chapter 4 , Configuring the I/O ,
discuss how to configure the adapter and controller on the network for these
options. The defines the different options. This chapter discusses how to use I/O
after you have configured the adapter and controller.
Topic Page
About I/O Messaging 79
Understanding the I/O Image 80
Using Logic Command/Status 84
Using Reference/Feedback 84
Using Datalinks 86
Example Ladder Logic Program Information 87
ControlLogix Controller Example 88
ATTENTION: Risk of injury or equipment damage exists. The examples in
this publication are intended solely for purposes of example. There are
many variables and requirements with any application. Rockwell
Automation, Inc. does not assume responsibility or liability (to include
intellectual property liability) for actual use of the examples shown in this
publication.