Raw hex data to float

[Yoruk]

Hello,

I'm having issues getting some data from a PLC through TCP modbus connexion.

The PLC is sending on one register the float value "1.5252", but I didn't manage to get this value directly.

By playing on the registers, I managed to get on one output the hex value 3fc3 and on a second one 39c1. (screenshot)

Using an hex converter online it confirms that 0x3fc339c1 is a representation of "1.5252".

But now I'm looking for a way to convert these two 16 bits registers into the real float value. I tried to look around bit shifting operations, but the actual definition of the float format (https://en.wikipedia.org/wiki/Single-precision_floating-point_format#/media/File:Float_example.svg) is a bit difficult to handle by direct bit shifting (in my opinion).

Of course I tried this :

But it looks like that the "32 bits floating point" is not the good converting convention. (works fine for integers)

And I cannot change the format on the PLC side.

Any ideas to solve this ?

Thanks in advance !