PLC-API VAR_IN_OUT VAR_IN_OUT stParams : ST_CTRL_NOISE_GENERATOR_PARAMS; END_VAR stParams : Parameter structure of the noise generator. This consists of the following elements: TYPE ST_CTRL_NOISE_GENERATOR_PARAMS: STRUCT tCtrlCycleTime : TIME := T#0ms; (* controller cycle time [TIME] *) tTaskCycleTime : TIME := T#0ms; (* task cycle time [TIME] *) fAmplitude : FLOAT := 0; END_TYPE tCtrlCycleTime : Cycle time with which the control loop is processed. This must be greater than or equal to the TaskCycleTime. The function block uses this input value to calculate internally whether the state and the output values have to be updated in the current cycle. tTaskCycleTime :
Cycle time with which the function block is called. If the function block is called in every cycle this corresponds to the task cycle time of the calling task. fAmplitude : Amplitude of the output signal. A noise signal extending over the range [ -fAmplitude/2.0 ... fAmplitude/2.0 ] is created at the function block's output. Requirements 5.5.7 FB_CTRL_NOTCH_FILTER The function block represents a digital notch filter. Transfer function: TS4100 88 Version: 1.1 Development environment Target system type PLC libraries to be linked TwinCAT v2.8 PC (i386) TcControllerToolbox.lib