Rockwell Automation 20-COMM-P Profibus Adapter - Manual (Page 51)

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.
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 PROFIBUS adapter provides 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.
Chapter 3 , Configuring the Adapter and Chapter 4 , Configuring the
Profibus 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 SLC Example Ladder Logic Program 5-6
Understanding the I/O Image 5-2 SLC Ladder Logic Example - Main
Program 5-9
Using Logic Command/Status 5-4 SLC Ladder Logic Example - Station
1 Program 5-13
Using Reference/Feedback 5-4 SLC Ladder Logic Example - Station
2 Program 5-17
Using Datalinks 5-4
!
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.
About I/O Messaging
20COMM-UM006A-EN-P.book Page 1 Friday, September 28, 2001 10:43 AM