Using the i/o, About i/o messaging, Chapter 5 – Rockwell Automation 25-COMM-D PowerFlex 525 DeviceNet Adapter User Manual
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Rockwell Automation Publication 520COM-UM002A-EN-E - April 2013
47
Chapter
5
Using the I/O
This chapter provides information and examples that explain how to control,
configure, and monitor a PowerFlex 525 drive using the configured I/O.
About I/O Messaging
On CIP-based networks, including DeviceNet, I/O connections are 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 520-series
drives.
The adapter includes the Logic Command, Logic Status, Reference, and
Feedback (all as 16-bit words). This requires four bytes for the Input Size and
four bytes for the Output Size in the controller’s I/O image. This basic I/O must
be always configured in the DeviceNet scanner using RSNetWorx for DeviceNet
software. Additional I/O, if needed, can be set using up to four Datalinks to write
data and/or up to four Datalinks to read data. When using any combination of
these Datalinks, add two bytes for each Datalink to the basic I/O Input Size and/
or Output Size.
discuss how to configure the adapter and controller on the network for the
required I/O. The
defines the different options. This chapter discusses
how to use I/O after you have configured the adapter and controller.
Topic
Page
ATTENTION:
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of
injury
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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.