Rockwell Automation 20-COMM-Q ControlNet Adapter - Manual (Page 129)

20-COMM-C/Q ControlNet Adapter User Manual
Publication 20COMM-UM003F-EN-P
Chapter 6
Using Explicit Messaging
This chapter provides information and examples that explain how to use
Explicit Messaging to configure and monitor the adapter and connected
PowerFlex 7-Class drive or PowerFlex 750-Series drive.
Important: When used in a PowerFlex 750-Series drive, the 20-COMM-C
or 20-COMM-Q adapter must have firmware 3.001 or later to
support explicit messaging to drive parameters (Port 0).
Furthermore, the adapter requires firmware 3.002 or later for
explicit messaging to parameters of peripherals in drive Ports
1…14.
Refer to Chapter 5 for information about the I/O Image, using Logic
Command/Status, Reference/Feedback, and Datalinks.
Topic Page
About Explicit Messaging 6-2
Performing Explicit Messages 6-3
ControlLogix Controller Examples 6-4
PLC-5 Controller Examples 6-23
SLC 500 Controller Examples 6-40
!
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.
!
ATTENTION: Risk of equipment damage exists. If Explicit
Messages are programmed to write parameter data to Nonvolatile
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. Datalinks do not write to NVS and should be used for
frequently changed parameters.