Rockwell Automation 20-750-ENETR PowerFlexDual-Port EtherNet/IP Option Module User Manual
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110
Rockwell Automation Publication 750COM-UM008A-EN-P - July 2012
Chapter 6
Using Explicit Messaging (Adapter mode only)
ControlLogix Controller Example Scattered Write Request Data
In this message example, we use the data structure in
in the source tag
(Scattered_Write_Request) to write new values to these 32-bit REAL (floating
point) parameters:
DPI Parameter Object on page 163
(Class code 0x93) or
(Class code 0x9F) for parameter numbering.
shows the parameter values which, in this example, have been
converted using a UDDT to correctly write their values. COP (Copy)
instructions could have been used for this purpose instead of a UDDT. If the
parameters being written to are 32-bit integers, do not COP the data to a REAL
tag.
Figure 34 - Example Scattered Write Request Converted Data
ControlLogix Controller Example Scattered Write Response Data
The results of the message appear in the destination tag named
Scattered_Write_Response (
). Values of “0” indicate no errors occurred.
Figure 35 - Example Scattered Write Response Data
PowerFlex 750-Series Drive Parameter
Write Value
536 - [Accel Time 2]
11.1 Sec
538 - [Decel Time 2]
22.2 Sec
575 - [Preset Speed 5]
33.3 Hz
576 - [Preset Speed 6]
44.4 Hz
577 - [Preset Speed 7]
55.5 Hz