Allen-Bradley LOGIX 5000 Reference Manual page 332

Chapter 3 Filter
332
Output Parameter Data Type
EnableOut BOOL
Out REAL
DeltaT REAL
Status DINT
InstructFault (Status.0) BOOL
WLagInv (Status.1) BOOL
OrderInv (Status.2) BOOL
TimingModeInv (Status.27) BOOL
RTSMissed (Status.28) BOOL
RTSTimeInv (Status.29) BOOL
RTSTimeStampInv (Status.30) BOOL
DeltaTInv (Status.31) BOOL
Structured Text
Operand Type
LPF tag FILTER_LOW_PASS
See Structured Text Syntax for more information on the syntax of expressions
within structured text.
Description
The LPF instruction uses the Order parameter to control the sharpness of the
cutoff. The LPF instruction is designed to execute in a task where the scan rate
remains constant.
Rockwell Automation Publication 1756-RM006K-EN-P - November 2018
Description
Indicates if instruction is enabled Cleared to
false if Out overflows.
The calculated output of the algorithm.
Elapsed time between updates. This is the
elapsed time in seconds used by the control
algorithm to calculate the process output.
Status of the function block.
The instruction detected one of the following
execution errors. This is not a minor or major
controller error. Check the remaining status bits
to determine what occurred.
WLag < minimum value or WLag > maximum
value.
Invalid Order value.
Invalid TimingMode value.
Only used in real time sampling mode. Set to
true when
ABS(DeltaT – RTSTime) > 1 millisecond.
Invalid RTSTime value.
Invalid RTSTimeStamp value.
Invalid DeltaT value.
Format Description
structure LPF structure