Rockwell Automation 1404-M4_M5_M6_M8 Powermonitor 3000 User Manual, Firmware rev. 3.0 or LATER - Manual (Page 135)

Publication 1404-UM001F-EN-P - November 2009 135
Setpoint Programming and Operation Chapter 5
Reading Setpoint Status Data by Using Communication
To read the setpoint status by using communication, the client uses
the indexed read method. The power monitor uses the
Setpoint
Setup/Read-back Select and Status table both to select the setpoint to
be read on the next read, and to return the status of the selected
setpoint. In auto-increment mode (0), the first read returns the status
of setpoint 1, the second read setpoint 2, and so on. In manual mode
(1) the client alternates writes selecting the desired setpoint with reads
of the setpoint status. See the list just above for the content of this data
table.