Allen-Bradley Logix5000 Reference Manual page 664

Appendix B Function Block Attributes
Output Parameter Data Type
DeltaT REAL
Status DINT
TimingModeInv BOOL
(Status.27)
RTSMissed (Status.28) BOOL
RTSTimeInv (Status.29) BOOL
RTSTimeStampInv BOOL
(Status.30)
DeltaTInv (Status.31) BOOL
664
Output Parameters
Description
Elapsed time between updates. This is the elapsed time in seconds used by the control algorithm to
calculate the process output.
Periodic: DeltaT = task scan rate if task is Periodic task, DeltaT = elapsed time since previous
instruction execution if task is Event or Continuous task
Oversample: DeltaT = OversampleDT
Real Time Sampling: DeltaT = (RTSTimeStamp
Status of the function block.
Invalid TimingMode value.
Only used in real time sampling mode. Set when ABS | DeltaT - RTSTime | > 1 (.001 second).
Invalid RTSTime value.
Invalid RTSTimeStamp value.
Invalid DeltaT value.
Rockwell Automation Publication 1756-RM003N-EN-P - October 2011
- RTSTimeStamp )
n n-1