Hello, 

This was just answered on the linkedin forum:

"Unfortunately overloading is not allowed in twincat 3. Not for methods, properties nor variables themselves.

it sucks I know, but you gotta play with the cards you got..

So you need to do something around the limitations."

@runtimevictor

My post on codesys forum about how to overload a sort function may interest you:

https://forge.codesys.com/forge/talk/Runtime/thread/6ae1b1ff98/?page=1&limit=25#f6da

It is not exactly what you are trying to do, but it is an approach.

For an Adition function with undifined parameter inputs, I will do it like this:

• Create a function per type you want to return (DINT and REAL)
• Each function will have 3 arguments
  • element_count: the number of element you want to add
  • pData : pointer to array of byte containing the element you want to add
  • element_size : the byte count of each of your element
• Perform a loop that:
  • cast an element of the pData array to the correct type
  • add the cast element with the result
  • increment the byte number depending on element_size

Unfortunately it is not possible to have an undifined number of parameter in ST. The compiler is not capable to determine it itself like other language (in C we have the '...' argument with VA_List type). So you have to perform it yourself.

This is how it is done in C:

https://en.cppreference.com/w/c/variadic/va_arg