Siemens SINUMERIK 840D sl Turning Operating Manual page 610

Programming technology functions (cycles)
10.6 Further cycles and functions
Direction (minus/plus)
Direction reference of traversing direction of rotary axis 1 or 2 of the active swivel data set
(machine kinematics). The NC calculates two possible solutions of the rotation / offset
programmed in CYCLE800 using the angle traversing range of the rotary axes of the machine
kinematics. Usually, only one of these solutions is technologically suitable. The solutions differ
by 180 degrees in each case. Selecting the "minus" or "plus" direction determines which of the
two possible solutions is to be applied.
● "Minus" → Lower rotary axis value
● "Plus" → Higher rotary axis value
Also in the basic setting (pole setting) of the machine kinematics, the NC calculates two
solutions and these are approached by CYCLE800. The reference is the rotary axis that was
set as direction reference when commissioning the "swivel" function.
If one of the two positions cannot be reached for mechanical reasons, the alternative position
is automatically selected irrespective of the setting of the "Direction" parameter.
Procedure
G code program parameters
PL Machining plane
610
Machine manufacturer
Please observe the information provided by the machine manufacturer.
1. The part program or ShopTurn program to be processed has been cre‐
ated and you are in the editor.
2. Select the "Miscellaneous" softkey.
3. Press the "Swivel plane" softkey.
The "Swivel plane" input window opens.
4. Press the "Basic setting" softkey if you wish to reestablish the initial state,
i.e. you wish to set the values back to 0.
This is done, for example, to swivel the coordinate system back to its
original orientation.
ShopTurn program parameters
T Tool name
D Cutting edge number
Feedrate
S / V Spindle speed or constant cutting
rate
Operating Manual, 06/2019, A5E44903486B AB
mm/min
mm/rev
rpm
m/min
Turning