Allen-Bradley PowerFlex 20-COMM-D, User Manual

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Chapter
5
Using I/O Messaging
Chapter 5 provides information and examples that explain how to use
I/O Messaging to control a PowerFlex drive.
On DeviceNet, I/O Messaging is used to transfer the data which controls
the PowerFlex drive and sets its Reference. I/O can also be used to
transfer data to and from Datalinks in PowerFlex drives.
The DeviceNet adapter provides many options for configuring and using
I/O, including the following:
•
The size of I/O can be configured by enabling or disabling the Logic
Command/Reference and Datalinks.
•
A Master-Slave hierarchy or Peer-to-Peer communications can be set
up.
•
Change of State, Cyclic, or Polled data exchange methods can be
used.
Chapter 3 , Configuring the Adapter and Chapter 4 , Configuring the
Scanner discuss how to configure the adapter and scanner on the network
for these options. The Glossary defines the different options. This
chapter discusses how to use I/O after you have configured the adapter
and scanner.
Topic Page Topic Page
About I/O Messaging 5-1 Example Ladder Logic Programs 5-6
Understanding the I/O Image 5-2 ControlLogix Example 5-7
Using Logic Command/Status 5-4 PLC-5 Example 5-9
Using Reference/Feedback 5-4 SLC Example 5-11
Using Datalinks 5-4
!
ATTENTION: Hazard 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 does not assume responsibility or
liability (to include intellectual property liability) for actual use of the
examples shown in this publication.
About I/O Messaging