Siemens SINUMERIK 840D sl Operating Manual page 245

Turning
Operating Manual, 02/2012, 6FC5398-8CP40-3BA0
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.
Creating a ShopTurn program
7.10 Repeating program blocks
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