FB_CTRL_CHECK_IF_IN_BAND

FB_CTRL_CHECK_IF_IN_BAND 1:

The function block monitors whether the input value is within the range [fMin ... fMax], i.e. whether the inequality

is fulfilled.

Inputs

VAR_INPUT
    fIn    : FLOAT;
END_VAR

Name	Type	Description
fIn	FLOAT	Input value that is monitored.

Outputs

VAR_OUTPUT
    bInBand     : BOOL;
    bNotInBand  : BOOL;
    eErrorId    : E_CTRL_ERRORCODES;
    bError      : BOOL;
END_VAR

Name	Type	Description
bInBand	BOOL	A TRUE at this output indicates that the input value is within the specified range.
bNotInBand	BOOL	A TRUE at this output indicates that the input value is not within the specified range.
eErrorId	E_CTRL_ERRORCODES	Supplies the error number when the output `bError` is set.
bError	BOOL	Becomes TRUE, as soon as an error occurs.

Inputs/ outputs

VAR_IN_OUT
    stParams        : ST_CTRL_CHECK_IF_IN_BAND_PARAMS;
END_VAR

Name	Type	Description
stParams	ST_CTRL_ CHECK_IF_IN_ BAND_PARAMS	Parameter structure of the function block

stParams consists of the following elements:

TYPE ST_CTRL_CHECK_IF_IN_BAND_PARAMS:
STRUCT
    tCtrlCycleTime  : TIME := T#0ms;
    tTaskCycleTime  : TIME := T#0ms;
    fMin            : FLOAT;
    fMax            : FLOAT;
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.
fMin	FLOAT	Lower limit of the range
fMax	FLOAT	Upper limit of the range