This video from Siemens briefly describes the keys and screen areas of Sinumerik 808D control panel.
After watching this video a CNC machinist can easily distinguish different areas of CNC machine control panel.
Control Panel Introduction SINUMERIK 808D
Sinumerik 808D Screen introduction
Active mode.
Time and date.
Loaded program.
Axis data.
Keyboard Introduction
Operating area buttons.
Program editing keys.
Machine Control Panel Introduction
Emergency stop button.
Axis Direction Keys.
Feed override and Speed override.
CNC machine Modes like
JOG mode.
Auto mode.
Single block mode.
MDI mode.
