TO_BOOL

Overloaded conversion to BOOL

This instruction converts a value of any allowed data type into a value of the data type BOOL.

Parameters

Input

Unnamed input (INT, UINT, DINT, UDINT, REAL, LREAL, BOOL, WORD, DWORD): Value to be converted

Output

Unnamed output (BOOL): Conversion result

Example

POU header

All input and output variables used for programming this function have been declared in the POU header. The same POU header is used for all programming languages.

	VAR
		bValue: BOOL:=FALSE;
		iValue: INT:=0;
		bStart: BOOL:=FALSE;
	END_VAR

POU body

When the variable bStart is set to TRUE, the function is carried out.

LD body

BODY
    WORKSPACE
        NETWORK_LIST_TYPE := NWTYPELD ;
        ACTIVE_NETWORK := 0 ;
    END_WORKSPACE
    NET_WORK
        NETWORK_TYPE := NWTYPELD ;
        NETWORK_LABEL :=  ;
        NETWORK_TITLE :=  ;
        NETWORK_HEIGHT := 4 ;
        NETWORK_BODY
B(B_VARIN,,iValue,12,2,14,4,);
B(B_VAROUT,,bValue,21,2,23,4,);
B(B_CONTACT,,bStart,5,1,7,3,);
B(B_F,E_TO_BOOL!,,14,0,20,4,,?DEN?D?AENO?C);
L(1,2,5,2);
L(7,2,14,2);
L(20,3,21,3);
L(1,0,1,4);
        END_NETWORK_BODY
    END_NET_WORK
END_BODY

ST body

IF (bStart) THEN
    bValue := TO_BOOL(iValue);
END_IF;