Rockwell Automation 1404-M4_M5_M6_M8 Powermonitor 3000 User Manual, Firmware rev. 3.0 or LATER - Manual (Page 118)

118 Publication 1404-UM001F-EN-P - November 2009
Chapter 4 Communication
Create a PLC-5 Typed Read
You can message integer and float files to and from the power
monitor using PLC-5 typed message instructions by using the
following steps.
Insert a MSG Instruction to the ladder rung and assign a control.
This example reads the Voltage, Current and Frequency table, File F15
from the power monitor.
Notice that when using an unscheduled message directly to the power
monitor, in this case node 4, that the message format is local,
multi-hop selection is no.