Siemens SINUMERIK 828D Operating Manual page 26

Introduction
1.3 Machine control panels
(8)
(9)
(10)
Figure 1-2
26
Axis keys
Selects an axis.
...
Direction keys
Select the traversing direction.
...
<RAPID>
Traverse axis in rapid traverse while pressing the direction key.
<WCS MCS>
Switches between the workpiece coordinate system (WCS) and machine
coordinate system (MCS).
Spindle control with override switch
<SPINDLE STOP>
Stop spindle.
<SPINDLE START>
Spindle is enabled.
Feed control with override switch
<FEED STOP>
Stops execution of the running program and shuts down axis drives.
<FEED START>
Enable for program execution in the current block and enable for ramp-up to
the feedrate value specified by the program.
Keyswitch (four positions)
Front view of machine control panel (milling version)
Operating Manual, 06/2009, 6FC5398-7CP20-0BA0
HMI sl Milling