Rockwell Automation 1404-M4_M5_M6_M8 Powermonitor 3000 User Manual, Firmware rev. 3.0 or LATER - Manual (Page 165)

Publication 1404-UM001F-EN-P - November 2009 165
Advanced Features Chapter 8
Trigger Statistics
The trigger source and capture identifier are combined in one
element, and indicate what triggered the capture and a unique capture
identifier or serial number. The value divided by 1000 gives the trigger
source: 0 = none; 1…20 = setpoint number; 21 = native
communication; 22 = optional communication. The remainder of this
calculation is the unique capture identifier which increments by 1
from 0…999 and rolls back to 0. A client application may use the
identifier to associate with an event log entry and determine
chronological order of captures. Example: a parameter value of 15,347
indicates that setpoint 15 triggered the capture and its serial number
or identifier is 347.
The trigger position returns the number of the data point
corresponding with the time the capture was triggered. A client
application may use this to place a marker on the displayed
waveform. The maximum trigger position is the same as the total
number of oscillogram data points. The power monitor configuration
may affect the accuracy of the trigger position statistic with respect to
the pre-trigger setting. For best results, set RMS resolution to 0
(nominal) and RMS results averaging to 0 (none) in the
Advanced
Device Configuration table.
The capture timestamp and capture type are also important statistics
that identify the capture and enable a client application to correctly
display the waveform.