Rockwell Automation FactoryTalk Report Expert User Guide - Manual (Page 166)

Chapter 10 Glossary of Fields
166 Rockwell Automation Publication RPTEXP-UM001H-EN-P-June 2014
Cycle Time Diff.
The difference, represented by a negative number, between the ideal
amount of time it should take to produce a part and the actual
amount of time it took to produce parts. Better cycle time
differences are indicated by a lower negative number. The
calculation for this field is:
CycleTimeDifference = IdealCycleTime - RealizedCycleTime.
Cycle Time Diff. %
The Cycle Time Difference as a percentage of the Ideal Cycle Time.
The calculation for this field is:
CycleTimeDiff% = -CycleTimeDifference / IdealCycleTime.
Downtime
The amount of time the machine was available, but was not running.
The calculation for this field is:
DownTime = AvailableTime - RunningTime.
Duration
The length of the event, calculated as the difference between start
time and end time and displayed using the format
HH:MM:SS.mmm. The calculation for this field is:
Duration = End Time - Start Time.
End Time
The date and time that the event or state ended.