Jog keys for A axis

        elif keyname == "Home" or keyname == "KP_Home":
            button_name = "a+"
            if signal:
                self._on_btn_jog_pressed(None, button_name, fast)
            else:
                self._on_btn_jog_released(None, button_name)
        elif keyname == "End" or keyname == "KP_End":
            button_name = "a-"
            if signal:
                self._on_btn_jog_pressed(None, button_name, fast)
            else:
                self._on_btn_jog_released(None, button_name)