Filter function block parameters

The following table lists the system parameters for the Filter function block.

Table: Filter function block system parameters
Parameter	Units	Description
FOLLOW	None	Selects whether to filter the input (0) or track the input (1). When FOLLOW is True (1), the filter algorithm does not execute and OUT tracks IN.
IN	Determined by source	The analog input value and status.
OUT	Determined by IN	The analog output value and status.
TIMECONST	Seconds	The time constant. Specifies the time for OUT to equal 63% of IN.

Note

Default values and data type information for the parameters are available by expanding the Parameter View window.