Spindle Positioning: Spos; Spindle Speed Limitation: G25, G26 - Siemens SINUMERIK 802D sl Programming And Operating Manual

3.4.2

Spindle speed limitation: G25, G26

Functionality
In the program, you can limit the limit values that would otherwise apply by writing G25 or
G26 and the spindle address S with the speed limit value. At the same time the values in the
setting data are overwritten.
G25 or G26 only need one separate block each. A previously programmed speed S is main-
tained.
Programming
G25 S...
G26 S...
Information
The outmost limits of the spindle speed are set in machine data. By entering via the operator
panel, setting data for further limitations can be activated.
For the function G96 -constant cutting speed, an additional upper limit (LIMS) can be pro-
grammed/entered.
Programming example
N10 G25 S12
N20 G26 S700
3.4.3

Spindle positioning: SPOS

Requirement
The spindle must be technically designed for position control.
Functionality
With the function SPOS= you can position the spindle in a specific angular position. The
spindle is held in the position by position control.
The speed of the positioning procedure is defined in machine data.
With SPOS=
tained until the end of the positioning. When positioning from standstill, the position is ap-
proached via the shortest path. The direction results from the respective starting and end
position.
Grinding
Programming and Operating manual, 06/2006, 6FC5398-4CP10-0BA0
; Lower spindle speed limitation
; Upper spindle speed limitation
; Lower spindle speed limitation : 12 RPM
; Upper spindle speed limitation : 700 RPM
value
from the M3/M4 movement, the respective direction of rotationis main-
Programming
3.4 Spindle movements
3-53