FB_ALY_MinMaxAvgInterval_1Ch

The Min Max Avg Interval 1Ch calculates the minimum, maximum and the average of the input values for the time period of the configured Interval. Furthermore the time values of minimum and maximum are shown. Note that all values are from the relative last interval and that they will only be updated when the interval is over. The calculation restarts when the time of the interval has elapsed.

Syntax

Definition:

FUNCTION_BLOCK FB_ALY_MinMaxAvgInterval_1Ch
VAR_OUTPUT 
    ipResultMessage: Tc3_EventLogger.I_TcMessage;
    bError: BOOL; 
    bNewResult: BOOL; 
    bConfigured: BOOL; 
    fMin: LREAL;
    fMax: LREAL;
    fAvg: LREAL;
    fbTimeMin: FB_ALY_DateTime;
    fbTimeMax: FB_ALY_DateTime;
    fbTimeCurrentInterval: FB_ALY_Timespan;
END_VAR

Outputs

Name	Type	Description
ipResultMessage	I_TcMessage	Contains more detailed information on the current return value. This special interface pointer is internally secured so that it is always valid/assigned.
bError	BOOL	This output is `TRUE` if an error occurs.
bNewResult	BOOL	When a new result has been calculated, the output is `TRUE.`
bConfigured	BOOL	Displays `TRUE` when the function block is successfully configured.
fMin	LREAL	Minimum of the input values in the current time interval.
fMax	LREAL	Maximum of the input values in the current time interval.
fAvg	LREAL	Average of the input values in the current time interval.
fbTimeMin	FB_ALY_DateTime	Timestamp of `fMin`.
fbTimeMax	FB_ALY_DateTime	Timestamp of `fMax`.
fbTimeCurrentInterval	FB_ALY_Timespan	Elapsed time of the current interval.

Methods

Name	Definition location	Description
Call()	Local	Method for calculating the outputs for a specific configuration.
Configure()	Local	General configuration of the algorithm with its parameterized conditions.
Reset()	Local	Resets all internal states or the calculations performed so far.
SetChannelValue()	Local	Method for passing values to the algorithm.
Pause()	Local	Method to pause the execution including the internal time intervals.

Sample

VAR
    fbMinMaxAvgInterval : FB_ALY_MinMaxAvgInterval_1Ch;
    fbSystemTime : FB_ALY_GetSystemTime;
    tInterval : LTIME := LTIME#20S;
    bConfigure : BOOL := TRUE;
    nInput : INT;
END_VAR

// Configure algorithm
IF bConfigure THEN
    bConfigure := FALSE;
    
    fbMinMaxAvgInterval.Configure(tInterval);
END_IF

// Get current system time
fbSystemTime.Call();

// Call algorithm
fbMinMaxAvgInterval.SetChannelValue(nInput);
fbMinMaxAvgInterval.Call(fbSystemTime.tSystemTime);

Requirements

Development environment	Target platform	Plc libraries to include
TwinCAT v3.1.4024.0	PC or CX (x64, x86)	Tc3_Analytics

Further Information