当功能有 效时，内外冷 却液/气（操作面板上的内/外气键）的信号灯点亮，反之熄灭。

With the selector key in m anual mode the coolant supply will be interrupted and its reactivation depends on the next key selection. The first 

selection of the key serves to activate the control and the second one to deactivate it.

如果该选择键处于手动模式位置，则当前可用的冷 却液被阻断，再次激 活则需按键。第一次按键激 活控制，第 二次按则停止。

Also in this case the la mps ON will state the function active, while if they are OFF the function is not controlled.

这种情况下，灯亮说明功能可用反之则不能控制。

Besides the above-mentioned state there is a state of flashing la mp, which happens whenever a function operated by the progra m is 

disabled m anually. In this case with the selector in aut o m atic mode the control will be immediately reset.

除了这些情况以外，灯闪说明程序手动停止来使功能激 活。在此情况下，使选择键处于自动模式下，就能立即恢复控制。

Handwheel: 手轮

This key serves to operate the handwheel placed from the side of the m ain control panel and it allows moving all axes exclusively in JOG mode. 

Its operation is also conditioned by the state of the SIEMENS mobile control panel, because is not possible to move the axes in JOG from two