Rockwell Automation Publication 1756-RM006K-EN-P - November 2018 337
Operands
Function Block
Operand Type Format Description
NTCH tag FILTER_NOTCH Structure NTCH structure
FILTER_NOTCH Structure
Input Parameter Data Type Description
EnableIn BOOL Enable input. If false, the instruction does not execute and outputs are not
updated.
Default is true.
In REAL The analog signal input to the instruction.
Valid = any float
Default = 0.0
Initialize BOOL Request to initialize filter control algorithm. When true, the instruction sets Out
= In.
Default is false.
WNotch REAL The filter center frequency in radians/second. If WNotch < minimum or
WNotch > maximum, the instruction sets the appropriate bit in status and
limits WNotch.
Valid = see Description section below for valid ranges
Default = maximum positive float
QFactor REAL Controls the width and depth ratio. Set QFactor = 1 / (2*desired damping
factor). If QFactor < minimum or QFactor > maximum value, the instruction
sets the appropriate bit in Status and limits QFactor.
Valid = 0.5 to 100.0
Default = 0.5
Order REAL Order of the filter. Order controls the sharpness of the cutoff. If Order is invalid,
the instruction sets the appropriate bit in Status and uses Order = 2.
Valid = 2 or 4
Default = 2
TimingMode DINT Selects timing execution mode.
0 = Periodic mode
1 = Oversample mode
2 = Real time sampling mode2
For more information about timing modes, see Function Block Attributes.
Valid = 0 to 2
Default = 0
OversampleDT REAL Execution time for oversample mode.
Valid = 0 to 4194.303 seconds
Default = 0
RTSTime DINT Module update period for real time sampling mode
Valid = 1 to 32,767ms
Default = 1
RTSTimeStamp DINT Module time stamp value for real time sampling mode.
Valid = 0 to 32,767ms
Default = 0