Siemens SINUMERIK 840C - Manual (Page 248)

09.95 6 NC Machine Data (NC MD), NC Setting Data (NC SD)
6.4 Axis-specific MD 1 (axial data 1)
Drive/servo loop module No. 3840,6-7
Default value Lower input limit Upper input limit Units
0 0 30
Active on
Weighting factor for path conversion 388*
Default value Lower input limit Upper input limit Units
0 +0 99 999 999 –
Active on
All chan. of
mode gr. in
STOP
Hammering or kneading machines are used for manufacturing axially symmetrical parts using a
forming process. The design of these machines sometimes necessitates traversing of an X'
path although an X path was programmed.
The weighting factor is entered in NC MD 388* and can be anything within the range
+0,00001 and+99,999999.
NC MD 388* is evaluated as follows:
2 integer places 6 decimal places
(leading zeroes may be omitted)
The value zero is interpreted as weighting factor 1, so that the programmed path and the path
to be traversed are identical. The weighting factor of the axis concerned is multiplied by the
programmed path to produce the path to be traversed.
Conditions:
a) All other NC MD (in units [IS]) must be entered in the programmed system (X).
b) All other NC MD (in units [MS]) must be entered in the refined system (X').
c) The actual-value display (except in the Service displays), zero offsets, tool offset, PRESET
offset, etc., relate to the programmed system.
d) The programmed F value relates to the programmed system.
e) If the programmed or specified speed exceeds the permissible axis speed in the refined
system or cannot be converted into the internal computing format, alarm 2031 ("Weighting
factor too high") is set and both machining and NC Start inhibited.
f) The weighting factor is effective in all modes.
g) The weighting factor is not effective in the case of rotary axes.
© Siemens AG 1992 All Rights Reserved 6FC5197- AA50 6–63
SINUMERIK 840C (IA)