FB_CTRL_SIGNAL_GENERATOR

FB_CTRL_SIGNAL_GENERATOR 1:

The function block provides a signal generator offering triangular, sine and sawtooth signal forms.

Output signals

FB_CTRL_SIGNAL_GENERATOR 2:

VAR_INPUT

VAR_INPUT
    fManValue  : FLOAT;
    eMode      : E_CTRL_MODE;
END_VAR

Name	Type	Description
fManValue	FLOAT	Input whose value is present 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 signal 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_SIGNAL_GENERATOR_PARAMS;
END_VAR

Name	Type	Description
stParams	ST_CTRL_SIGNAL_ GENERATOR_PARAMS	Parameter structure of the function block

stParams consists of the following elements:

TYPE ST_CTRL_SIGNAL_GENERATOR_PARAMS:
STRUCT
    tCtrlCycleTime  : TIME := T#0ms; 
    tTaskCycleTime  : TIME := T#0ms; 
    eSignalType     : E_CTRL_SIGNAL_TYPE;
    tCylceDuration  : TIME;
    fAmplitude      : FLOAT;
    fOffset         : FLOAT := 0.0;
    tStart          : TIME := T#0s;
END_STRUCT
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.
eSignalType	E_CTRL_ SIGNAL_TYPE	Selection of the type of signal. TYPE E_CTRL_SIGNAL_TYPE : ( eCTRL_TRIANGLE := 0, eCTRL_SINUS := 1, eCTRL_SAWTOOTH := 2 ); END_TYPE
tCylceDuration	TIME	Period of the generated signal curve
fAmplitude	FLOAT	Amplitude of the generated signal curve
fOffset	FLOAT	Offset to be added to the signal curve
tStart	TIME	The moment of time within a period at which following the signal curve will begin when switching into eCTRL_MODE_ACTIVE occurs.