Rockwell Automation 20-750-PBUS Profibus DPV1 Option Module - Manual (Page 51)

Rockwell Automation Publication 750COM-UM004B-EN-P - September 2012 51
Chapter
5
Using the I/O
This chapter provides information and examples that explain how to control,
configure, and monitor a PowerFlex 750-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
750-Series drives.
The option module includes the Logic Command, Logic Status, Reference, and
Feedback (all as 32-bit words) in the controller’s I/O image. This basic I/O must
always be configured by the Profibus configuration tool to the 20-750-PBUS
option module, enabling the ability to control and monitor the PowerFlex 750-
Series drive.
Additional I/O if needed, can be configured using up to 16 Datalinks to write
data and/or up to 16 Datalinks to read data. When using any combination of
these Datalinks, one 32-bit word for each Datalink will be added to the basic I/O
Input Size and/or Output Size.
Chapter 3 , Configuring the Option Module , and Chapter 4 , Configuring the
Profibus Master discuss how to configure the option module and controller on
the network for the required I/O. This chapter discusses how to use the I/O after
you have configured the option module and controller.
Topic Page
About I/O Messaging 51
Understanding the I/O Image 52
Using Logic Command/Status 52
Using Reference/Feedback 53
Using Datalinks 53
I/O Communication 55
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 does not assume responsibility or liability (to include
intellectual property liability) for actual use of the examples shown in this
publication.