docs: public byte asControl(ProcessEvent e) throws KNXFormatException
  	{
  		final DPTXlator3BitControlled t = new DPTXlator3BitControlled(
  			DPTXlator3BitControlled.DPT_CONTROL_DIMMING);
  		t.setData(e.getASDU());
  		return t.getValueSigned();
  	}