Siemens SINUMERIK 840D sl Operating Manual page 520

Programming technology functions (cycles)
8.7 Additional cycles and functions in ShopTurn
Procedure
Parameters
Direction of rotation
α
F
520
1. The ShopTurn program to be processed has been created and you are
in the editor.
2. Press the menu forward key and the "Straight Circle" softkey.
3. Press the "Polar" and "Circle Polar" softkeys.
Description
Direction of rotation in which the tool travels from the circle starting point to the
circle end point
Direction of rotation clockwise (right)
Direction of rotation counterclockwise (left)
Polar angle to the pole, end point (abs) or
Polar angle change to the pole, end point (inc)
The sign specifies the direction.
Machining feedrate
Operating Manual, 02/2012, 6FC5398-8CP40-3BA0
Unit
Degrees
mm/rev
mm/min
mm/tooth
Turning