ST_PMA_Harmonics_Period_InitPars

Function block-specific structure with initialization parameters that is evaluated when the function blocks FB_PMA_Harmonics_Period_1Ph and FB_PMA_Harmonics_Period_3Ph are initialized.

Syntax

Definition:

TYPE ST_PMA_Harmonics_Period_InitPars :
STRUCT
    nBufferLength       : UDINT := 200;   // Length of input buffer
    fSampleRate         : LREAL := 1000;  // in Hz
    nNumHarmonics       : UDINT := 20;    // Number of harmonics
    nPeriods            : UDINT := 10;    // Amount of signal periods to calculate outputs
    bTransformToPercent : BOOL := TRUE;   // transform results to percent (1st harmonic=100%)
END_STRUCT
END_TYPE

Parameters

Name	Type	Parameters
nBufferLength	UDINT	Length of the input buffer
fSampleRate	LREAL	Indicates the sampling rate (samples per second) of the input signal.
nNumHarmonics	UDINT	Number of harmonics to be calculated
nPeriods	UDINT	Number of signal periods for calculating the output values.
bTransformToPercent	BOOL	Boolean value indicating whether the result should be output in percent. The first harmonic corresponds to 100%.

Requirements

Development environment	Target platform	PLC libraries to include
TwinCAT v3.1.4024.0	PC or CX (x86, x64)	Tc3_PowerMonitoring