cannot assign 'DINT' to 'STRING'

[rarris]

PROGRAM  main
VAR
a : STRING[80];
b : STRUCT1;
END_VAR
a := UINT_TO_STRING(b.var10);    //var10 is UINT
END_PROGRAM

TYPE STRUCT1 : STRUCT
    var10 : UINT := 10;
END_STRUCT END_TYPE

FUNCTION UINT_TO_STRING : DINT
VAR_INPUT
    in : UINT;
END_VAR
END_FUNCTION

error: Invalid assignment: cannot assign 'DINT' to 'STRING'

[ghaith]

The function UINT_TO_STRING is not yet implemented in the standard functions, but the signature here is wrong, and therefore you get an error, the signature should be

FUNCTION UINT_TO_STRING : STRING
VAR_INPUT
    in : UINT;
END_VAR
END_FUNCTION

[rarris]

we have a new error case here

code example:

PROGRAM mainProg
VAR
  Conv : STRING[125];
  Index : USINT;
  Args : argsSTR;
END_VAR
  Conv := BOOL_TO_STRING(Args.b[Index]);
END_PROGRAM

TYPE argsSTR :
	 STRUCT
		b : ARRAY[0..4] OF BOOL ;
		i : ARRAY[0..4] OF DINT ;
	END_STRUCT
END_TYPE

error: Invalid assignment: cannot assign 'DINT' to 'STRING[125]' Error: E001: Compilation aborted due to critical errors