FB_ALY_MathOperation

The Math Operation executes a mathematical operation on two or more different input channels and provides the result of the mathematical operation. The operator is the same for all operands.

Syntax

Definition:

FUNCTION_BLOCK FB_ALY_MathOperation 
VAR_OUTPUT 
    ipResultMessage: Tc3_EventLogger.I_TcMessage;
    bError: BOOL;
    bNewResult: BOOL;
    bConfigured: BOOL;
    fResult: LREAL;
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.
fResult	LREAL	Outputs the result of the mathematical operation.

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.
FB_init()	Local	Initializes the number of input channels.
Reset()	Local	Resets all internal states or the calculations performed so far.
SetChannelValue()	Local	Method for passing values to the algorithm.

Sample

VAR
    fbMathOperation : FB_ALY_MathOperation(nNumChannels := 3);
    eMathOperator : E_ALY_MathOperator := E_ALY_MathOperator.Addition;
    bUseAbsValues : BOOL := FALSE;
    bConfigure : BOOL := TRUE;
    nInputCh1 : INT;
    fInputCh2 : LREAL;
    nInputCh3 : UDINT;
END_VAR

// Configure algorithm
IF bConfigure THEN
    bConfigure := FALSE;

    fbMathOperation.Configure(eMathOperator, bUseAbsValues);
END_IF

// Call algorithm
fbMathOperation.SetChannelValue(1, nInputCh1);
fbMathOperation.SetChannelValue(2, fInputCh2);
fbMathOperation.SetChannelValue(3, nInputCh3);
fbMathOperation.Call();

Requirements

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

Further Information