Rockwell Automation 20-COMM-R Remote I/O Adapter - Manual (Page 59)

20-COMM-R Remote I/O Adapter User Manual
Publication 20COMM-UM004D-EN-P
Chapter 5
Using Block Transfer Messaging
This chapter provides information and examples for using Block Transfer to
send Explicit Messages to control, configure, and monitor a PowerFlex
7-Class drive on a Remote I/O network.
Topic Page
About Block Transfer Messaging 5-2
Formatting Block Transfer Messages 5-2
Executing Block Transfers for Explicit Messages 5-5
Example Programs 5-6
ControlLogix Controller Example 5-7
PLC-5 Controller Example 5-9
SLC 500 Controller Examples 5-11
!
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 Block
Transfer is used to send Explicit Messages that 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 Block
Transfer to send Explicit Messages to write parameter data to
NVS. Datalinks do not write to NVS and should be used for
frequently changed parameters.