Rockwell Automation 20-750-CNETC PowerFlex Coaxial ControlNet Option Module User Manual
Page 80
80
Rockwell Automation Publication 750COM-UM003B-EN-P - November 2012
Chapter 6
Using Explicit Messaging
ControlLogix Controller Example Ladder Logic Program to Read
Multiple Parameters
A Scattered Read message is used to read the values of multiple parameters. This
read message example reads the values of these five 32-bit REAL (floating point)
parameters in a PowerFlex 750-Series drive:
•
Parameter 001 - [Output Frequency]
•
Parameter 007 - [Output Current]
•
Parameter 008 - [Output Voltage]
•
Parameter 009 - [Output Power]
•
Parameter 011 - [DC Bus Volts]
DPI Parameter Object on page 115
(Class code 0x93) or
(Class code 0x9F) for parameter numbering.
Table 7 - Example Controller Tags to Read Multiple Parameters
Figure 23 - Example Ladder Logic to Read Multiple Parameters
Operand
Controller Tags for Scattered Read Message
Data Type
XIC
Execute_Scattered_Read_Message
BOOL
MSG
Scattered_Read_Message
MESSAGE