docs: public float asFloat(ProcessEvent e) throws KNXFormatException
  	{
  		final DPTXlator2ByteFloat t = new DPTXlator2ByteFloat(
  			DPTXlator2ByteFloat.DPT_TEMPERATURE_DIFFERENCE);
  		t.setData(e.getASDU());
  		return t.getValueFloat();
  	}