Siemens SINUMERIK 840D sl Operating Manual page 246

Creating a ShopMill program
7.10 Repeating program blocks
246
5. Press the "Set marker" and "Accept" softkeys again.
An end marker is inserted after the actual block.
6. Continue programming up to the point where you want to repeat the
program blocks.
7. Press the "Various" and "Repeat progr." softkeys.
8. Enter the names of the start and end markers and the number of times
the blocks are to be repeated.
9. Press the "Accept" softkey.
The marked program blocks are repeated.
Operating Manual, 09/2011, 6FC5398-7CP40-2BA0
Milling