FB_CTRL_SCALE
This function block makes it possible to adjust the signal in a linear manner between two value ranges.
VAR_INPUT
VAR_INPUT
fIn : FLOAT;
END_VAR
fIn : Input value for the function block.
VAR_OUTPUT
VAR_OUTPUT
fOut : FLOAT;
eErrorId : E_CTRL_ERRORCODES;
bError : BOOL;
END_VAR
fOut : Scaled output value.
eErrorId : Supplies the error number when the bError output is set.
bError : Becomes TRUE, as soon as an error occurs.
VAR_IN_OUT
VAR_IN_OUT
stParams : ST_CTRL_SCALE_PARAMS;
END_VAR
stParams : Parameter structure of the function block. This consists of the following elements:
TYPE
ST_CTRL_SCALE_PARAMS:
STRUCT
tCtrlCycleTime : TIME := T#0ms; (* controller cycle
time [TIME] *)
tTaskCycleTime : TIME := T#0ms; (* task cycle time
[TIME] *)
fInMin : FLOAT;
fInMax : FLOAT;
fOutMin : FLOAT;
fOutMax : FLOAT;
END_STRUCT
END_TYPE
tCtrlCycleTime : 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 : 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.
fInMin : Minimum of the input value.
fInMax : Maximum of the input value.
fOutMin : Minimum of the output value.
fOutMax : Maximum of the output value.