You would have to write it back to a different tag.
I would put the script in the global scripting project, modified slightly so you can write to a target tag, then call it from a tag event script on the the raw value tag.
def toFloat32(valIn, target):
import struct
# Swap endianness
valIn = struct.unpack("<I", struct.pack(">I", valIn))[0]
# Return IEEE 754 float.
floatOut = struct.unpack('f', struct.pack('I', valIn))[0]
system.tag.writeBlocking([target], [floatOut])
In my example, I added a script to my global project called convert. The function resides in that script.
I made two tags in my test tag provider: RawValue and FloatValue. RawValue has the event script. in it.
value = currentValue.value
convert.toFloat32(value, '[Test]FloatValue')
