Siemens SINUMERIK 840D sl Operating Manual page 329

Programming a position pattern in ShopTurn
Several position patterns can be programmed in succession (up to 20 technologies and
position patterns in total). They are executed in the order in which you program them.
Note
The number of positions that can be programmed in a "Positions" step is limited to a maximum
of 600!
The programmed technologies and subsequently programmed positions are automatically
linked by the control.
Displaying and hiding positions
You can display or hide any positions (Section "Displaying and hiding positions (Page 346)").
Approach/retraction
1. Within a position pattern, or while approaching the next position pattern, the tool is retracted
to the retraction plane and the new position or position pattern is then approached at rapid
traverse.
2. With subsequent technological operations (e.g. centering - drilling - tapping), the respective
drilling cycle must programmed after calling the next tool (e.g. drill) and immediately
afterwards the call of the position pattern to be machined.
Tool traverse path
● ShopTurn
The programmed positions are machined with the previously programmed tool (e.g. center
drill). Machining of the positions always starts at the reference point. In the case of a grid,
machining is performed first in the direction of the 1st axis and then meandering back and
forth. The frame and hole circle are machined counter-clockwise.
● G codes
For G code, for rows/frames/grids, a start is always made at the next corner of the frame
or grid or the end of the row. The frame and circle or pitch circle are machined counter-
clockwise.
If an A or B axis is set up on your machine, this is supported during drilling (any position pattern,
full circle, and pitch circle).
You set as to which rotary axis is listed as selection in position patterns.
If the machine has an A or B axis, it makes sense to define a work offset:
X / Y = end face of the cylinder (X for an A axis / Y for a B axis)
X / Y = center point of the cylinder (Y for an A axis / X for a B axis)
Turning
Operating Manual, 05/2017, A5E40868721
Machine manufacturer
Please refer to the machine manufacturer's specifications.
Programming technology functions (cycles)
10.1 Drilling
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