Repeating Program Blocks - Siemens SINUMERIK 840D sl Operating Manual

Creating a ShopTurn program

7.10 Repeating program blocks

7.10 Repeating program blocks
If certain steps when machining a workpiece have to be executed more than once, it is only
necessary to program these steps once. You have the option of repeating program blocks.
Note
Machining several workpieces
The program repeat function is not suitable to program repeat machining of parts.
In order to repeatedly machine the same workpieces program this using end of program.
Start and end marker
You must mark the program blocks that you want to repeat with a start and end marker. You
can then call these program blocks up to 200 times within a program. The markers must be
unique, i.e. they must have different names. No names used in the NCK can be used.
You can also set markers and repeats after creating the program, but not within linked
program blocks.
Note
You can use one and the same marker as end marker for preceding program blocks and as
start marker for following program blocks.
Procedure
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1. Position the cursor at the program block, behind which a program block
that will be repeated should follow.
2. Press the "Various" softkey.
3. Press the ">>" and "Repeat progr." softkeys.
3. Press the "Set marker" and "Accept" softkeys.
A start marker is inserted behind the actual block.
4. Enter the program blocks that you want to repeat later.
5. Press the "Set marker" and "Accept" softkeys again.
An end marker is inserted after the actual block.
Operating Manual, 03/2013, 6FC5398-8CP40-3BA1
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