Rockwell Automation 25-COMM-P PowerFlex PROFIBUS DPV1 Adapter - Manual (Page 41)

Rockwell Automation Publication 520COM-UM004A-EN-E - November 2013 41
Chapter
5
Using the I/O
This chapter provides information and examples that explain how to control,
configure, and monitor a PowerFlex 520-series drive using PROFIBUS DPV0
messaging.
About I/O Messaging PROFIBUS DPV0 or I/O messaging is used to transfer the data which controls
the PowerFlex drive and its Reference. I/O messaging can also be used to transfer
data to and from Datalinks which are mapped to parameters in the 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 by the PROFIBUS configuration tool to the 25-COMM-P
adapter, enabling the ability to control and monitor the PowerFlex 520-series
drive. 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.
Configuring the Adapter on page 23 and Configuring the PROFIBUS Master on
page 31 discuss how to configure the adapter and controller on the network for
the required I/O. This chapter discusses how to use I/O after you have
configured the adapter and controller.
Topic Page
About I/O Messaging 41
Understanding the I/O Image 42
Using Logic Command/Status 42
Using Reference/Feedback 42
Using Datalinks 43
I/O Communication 44
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.