public void setAxis( int axis )
	{
		if( !((axis == 1) || (axis == 2) || (axis == 4) || (axis == 8)) )
		{
			return;
		}
		this.axis = (short) axis;
		byte[] b = ByteTools.shortToLEBytes( this.axis );
		getData()[0] = b[0];
		getData()[1] = b[1];
		// TODO if axis is data MUST have a SxDI otherwise if axis WAS a data axis must remove SxDI
	}