Siemens sinumerik 840D sl Operating Manual page 59

Selecting "Repos"
"MDA" mode (Manual Data Automatic)
In "MDA" mode, you can enter and execute G code commands non-modally to set up the
machine or to perform a single action.
Selecting "MDA"
"AUTO" mode
In automatic mode, you can execute a program completely or only partially.
Select "AUTO"
"TEACH IN" submode
The "TEACH IN" submode is available in the "AUTO" and "MDA" modes.
There you may create, edit and execute part programs (main programs or subroutines) for
motional sequences or simple workpieces by approaching and saving positions.
Selecting "Teach In"
Turning
Operating Manual, 07/2010, 6FC5398-8CP40-0BA0
Press the <REPOS> key.
Press the <MDA> key.
Press the <AUTO> key.
Press the <TEACH IN> key.
Setting up the machine
2.3 Modes and mode groups
59