Siemens SINUMERIK 828D Function Manual page 1384

V1: Feedrates
17.2 Path feedrate F
...
N87 MSG ("tapping")
N88 LFOF
N89 CYCLE...
N90 MSG ("")
...
N99 M3012.97
Control system response
At POWER ON and RESET, the retraction path is set as configured (MD), as is the state of LFON or LFOF and
LFTXT or LFWP using machine data:
MD20150 GCODE_RESET_VALUES
from the corresponding G group.
Smoothed actual values
If low­resolution encoders are being used, smoothed actual values can be applied for constant coupled path and
axis motions.
Machine data:
MD34990 ENC_ACTVAL_SMOOTH_TIME
can be used to change the time constant for more effectively smoothed actual values for:
• Thread cutting with feedrate for G33, G34, G35
• Revolutional feedrate for G95, G96, G97, FRAPON
• Display of actual positions and actual speed/velocity
The larger the time constant, the better the smoothing of the actual values and the longer the overtravel.
1384
; Deactivate fast retraction
before tapping
; Thread drilling cycle with G33
Function Manual, 09/2011, 6FC5397-0BP40-2BA0
Basic Functions