What is the difference between function & function block in terms of using var_in_out in codesys v2?

function no need to instantiate & it returns a value in Version2.

In version3 function can have outputs also.

a function can have only one output (this can be a structure) and a FB can have more vars.

Yes function returns a value.

I need info about using var_In_Out in function

Thanks

here you go
as a function can only give one variable back (or a structure) i have to put all outs in one structure.
in a function block you can have several in and out

WERK.zip [475 Bytes]

var_In_Out 
test:bool;
test2:int;
end_var

shooter hat geschrieben:
here you go
as a function can only give one variable back (or a structure) i have to put all outs in one structure.
in a function block you can have several in and out

Try the above in function declaration

Am asking about var_in_out in declaration

in a function it is impossible to have in-out,
start a new function and you will not be able to select it from the assistant.

pls check the attached pgm

function allows in_out

func.pro [33.93 KiB]

you declared it yes , but how do you get the result from internal to external?
ie you do not use over (which is the output of the function.)