N        This expression returns the four-byte floating-point number at the specified position in the received binary message.

It takes one parameter, which is the 0-based byte index in the binary message to read the 32-bit float from.


The value returned will be in the range -3.4e38 to 3.4e38. This is the only variable that can have decimal places.

If the expression fails, the value returned will be 0.


In Blue, if you try to read at an invalid index, you will cause an error. When using this expression outside of a Message event, you will also get an error related to message being too small.