FB_CTRL_SPLITRANGE

FB_CTRL_SPLITRANGE 1:

This function block divides an input signal into positive and negative components. The parameters bDisablePosOut and bDisableNegOut can be used to deactivate the positive or negative output → heating mode only during the winter, cooling mode only during the summer. The bInvertNegOutput parameter allows the negative output to be inverted.

Description of the output behavior

FB_CTRL_SPLITRANGE 2:

VAR_INPUT

VAR_INPUT
    fIn    : FLOAT;
END_VAR

Name	Type	Description
fIn	FLOAT	Input value for the function block

VAR_OUTPUT

VAR_OUTPUT
    fOutPos          : FLOAT;
    fOutNeg          : FLOAT;
    bOutPosIsActive  : BOOL;
    bOutNegIsActive  : BOOL;
    eErrorId         : E_CTRL_ERRORCODES;
    bError           : BOOL;
END_VAR

Name	Type	Description
fOutPos	FLOAT	Positive part of `fIn`
fOutNeg	FLOAT	Negative part of `fIn`
bOutPosIsActive	BOOL	TRUE indicates "fIn > 0.0"
bOutNegIsActive	BOOL	TRUE indicates "fIn < 0.0"
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_SPLITRANGE_PARAMS;
END_VAR

Name	Type	Description
stParams	ST_CTRL_SPLITRANGE_ PARAMS	Parameter structure of the function block

stParams consists of the following elements:

TYPE
ST_CTRL_SPLITRANGE_PARAMS:
STRUCT
    tCtrlCycleTime    : TIME := T#0ms;
    tTaskCycleTime    : TIME := T#0ms; 
    bInvertNegOutput  : BOOL;
    bDisablePosOut    : BOOL;
    bDisableNegOut    : BOOL;
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.
bInvertNegOutput	BOOL	`fOutNeg` is inverted when this parameter is TRUE.
bDisablePosOut	BOOL	The output `fOutPos` is disabled and always "0.0“.
bDisableNegOut	BOOL	The output `fOutNeg` is disabled and always "0.0“.