Using Explicit Messaging
6-9
PowerFlex 750-Series Drive DeviceNet Option Module User Manual
Publication 750COM-UM002A-EN-P
ControlLogix Example Scattered Read Request Data
In this example, we use the data structure in
in the source tag
named Scattered Read Request to read these five 32-bit REAL (floating
point) parameters in a PowerFlex 750-Series drive: 001 - [Output
Frequency], 007 - [Output Current], 008 - [Output Voltage], 009 -
[Output Power], and 011 - [DC Bus Volts].
Figure 6.8
Example Scattered Read Request Data
ControlLogix Example Scattered Read Response Data
The Scattered Read Request message reads the multiple parameters and
returns their values to the destination tag (Scattered_Read_Response).
shows the parameter values which, in this example, have
been converted using a UDDT for correct presentation. COP (Copy)
instructions could have been used for this purpose instead of a UDDT.
Figure 6.9
Example Scattered Read Response Converted Data
In this example, the parameters have the following values:
PowerFlex 750-Series Drive Parameter
Read Value
1 - [Output Frequency]
60.205975 Hz
7 - [Output Current]
12.570678 Amp
8 - [Output Voltage]
418.34348 VAC
9 - [Output Power]
12.3584 kW
11 - [DC Bus Volts]
566.5277 VDC
Summary of Contents for PowerFlex 750-Series
Page 143: ......
