FB_CTRL_CHECK_IF_IN_BAND
This function block monitors whether the input value is within the range [ fMin ... fMax ], i.e. whether the inequality
is satisfied.
VAR_INPUT
VAR_INPUT
fIn : FLOAT;
END_VAR
fIn : The input variable to be monitored.
VAR_OUTPUT
VAR_OUTPUT
bInBand : BOOL;
bNotInBand : BOOL;
eErrorId : E_CTRL_ERRORCODES;
bError : BOOL;
END_VAR
bInBand : A TRUE at this output indicates that the input value is within the specified range.
bNotInBand : A TRUE at this output indicates that the input value is not within the specified range.
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_CHECK_IF_IN_BAND_PARAMS;
END_VAR
stParams : Parameter structure of the function block. This consists of the following elements:
TYPE ST_CTRL_CHECK_IF_IN_BAND_PARAMS:
STRUCT
tCtrlCycleTime : TIME := T#0ms; (* controller cycle
time [TIME] *)
tTaskCycleTime : TIME := T#0ms; (* task cycle time
[TIME] *)
fMin : FLOAT;
fMax : 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 variable to calculate internally whether the state and the output variables have to be updated in the current cycle.
tTaskCycleTime : Cycle time with which the function block is called. If the block is called in every cycle this corresponds to the task cycle time of the calling task.
fMin : Lower limit of the range.
fMax : Upper limit of the range.