F_IsSameInstance

Compares two objects to see if they are exactly the same instance. If the transferred objects are each an instance of the same class but not the identical object, FALSE is returned.

This function works for all objects that implement I_Comparable (e.g. by inheriting from FB_Base) and interfaces that extend I_Comparable.

Example:

VAR
    fbObj1:        FB_Axis;
    fbObj2:        FB_Axis;
    iObj:          I_Axis := fbObj1;
END_VAR

F_IsSameInstance(fbObj1, fbObj1); // TRUE 
F_IsSameInstance(fbObj1, iObj);   // TRUE
F_IsSameInstance(fbObj1, fbObj2); // FALSE

Syntax:

FUNCTION F_IsSameInstance : BOOL

Inputs

Name	Type	Description
iCmp1	I_Comparable	First object to be compared.
iCmp2	I_Comparable	Second object to be compared.

Outputs

Name	Type	Description
F_IsSameInstance	BOOL	Result of the comparison: `TRUE` -> Identical, `FALSE` -> Different

Requirements

Development environment	Target platform	PLC libraries to include
TwinCAT 4026 >= v3.1.4026.19 TwinCAT 4024 >= v3.1.4024.71	PC or CX (x64, x86)	Tc3_PlasticBaseApplication (>= v12.14.0.0)