FB_CTRL_NOISE_GENERATOR

FB_CTRL_NOISE_GENERATOR 1:

This function block generates a noise signal on the basis of the pseudo-random number in the range [-fAmplitude ... fAmplitude].

Output signal

Output signal with an amplitude of 5.0.

VAR_INPUT

VAR_INPUT
    fManSyncValue  : FLOAT;
    eMode          : E_CTRL_MODE;
END_VAR

Name	Type	Description
fManSyncValue	FLOAT	Input value that is output at the output in manual mode.
eMode	E_CTRL_MODE	Input that specifies the operation mode of the function block.

VAR_OUTPUT

VAR_OUTPUT
    fOut      : FLOAT;
    eState    : E_CTRL_STATE;
    eErrorId  : E_CTRL_ERRORCODES;
    bError    : BOOL;
END_VAR

Name	Type	Description
fOut	FLOAT	Output of the noise generator
eState	E_CTRL_STATE	State of the function block
eErrorId	E_CTRL_ERRORCODES	Supplies the error number when the output `bError` is set.
bError	BOOL	Becomes TRUE, as soon as an error occurs.

VAR_IN_OUT

VAR_IN_OUT
    stParams        : ST_CTRL_NOISE_GENERATOR_PARAMS;
END_VAR

Name	Type	Description
stParams	ST_CTRL_NOISE_GENERATOR_ PARAMS	Parameter structure of the noise generator

stParams consists of the following elements:

TYPE
ST_CTRL_NOISE_GENERATOR_PARAMS:
STRUCT
    tCtrlCycleTime : TIME := T#0ms;
    tTaskCycleTime : TIME := T#0ms;
    fAmplitude     : FLOAT := 0;
END_TYPE

Name	Type	Description
tCtrlCycleTime	TIME	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	TIME	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	FLOAT	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.