Rockwell Automation 22-COMM-C ControlNet Adapter - Manual (Page 61)

Chapter
6
Using Explicit Messaging
Chapter 6 provides information and examples that explain how to use
Explicit Messaging to configure and monitor the 22-COMM-C adapter
and PowerFlex 4-Class drive to which it is connected.
Refer to Chapter 5 for information about the I/O image, using Logic
Command/Status and Reference/Feedback.
Explicit Messaging is used to transfer data that does not require
continuous updates. With Explicit Messaging, you can configure and
monitor a slave device’s parameters on the ControlNet network.
Important: When an explicit message is performed, by default no I/O
connection is made since it is an “unconnected” message.
When timing of the message transaction is important, you
can create a dedicated message connection between the
controller and drive by checking the “Connected” box on
the Communications tab message configuration screen
Topic Page Topic Page
About Explicit Messaging 6-1 ControlLogix Example 6-3
Performing Explicit Messages 6-2 PLC-5 Example 6-6
!
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.
!
ATTENTION: Risk of equipment damage exists. If Explicit Messages
are programmed to write parameter data to Non-Volatile Storage (NVS)
frequently, the NVS will quickly exceed its life cycle and cause the
drive to malfunction. Do not create a program that frequently uses
Explicit Messages to write parameter data to NVS.
About Explicit Messaging