Read real from s7 in delphi

[Edoardo Ceccarini]

hi, I have a problem reading the Real values from the s7 plc.
reading the value with the function
Client.ReadArea(Area, DBNumber, Start, Amount, WLen, @Buffer);
this returns me this string 6556144.
I don't understand how to convert it to a real number.
if I try to read Int value it works fine.

[Davide Nardella]

https://snap7.sourceforge.net/siemens_dataformat.html

[Edoardo Ceccarini]

Thank you!
Now I have another problem, I have to read data of type String(25). How should I read this type of data? Because he is not a native type.

[Davide Nardella]

byte by byte checking the first two bytes which contains max length and actual size

[Edoardo Ceccarini]

ok thank you again!