Siemens SINUMERIK 840Di sl - Page 284

Feedrate Control and Spindle Motion
7.4 Positioning spindles (SPOS, M19 and SPOSA, WAITS)
Fundamentals
284 Programming Manual, 11/2006, 6FC5398-1BP10-2BA0
WAITS
WAITS(n,m)
Wait for spindle position to be reached, spindle stop after M5, spindle
speed after M3/M4
WAITS applies to the master spindle, WAITS( ..., ...) for the specified
spindle numbers
n
m
Sn
Integers from 1 ... n of spindle number
Integers from 1 ... m of master spindle
nth Spindle number, 0 to max. spindle number
Axis
Real
Channel identifier
Percentage specification 100-0% referred to the braking ramp for
block changes. If no % is specified, the current value of the setting
data is applied.
Specify spindle position
The spindle position is specified in degrees. Three spindle positions are possible for each
NC block. If nothing is specified, traversing automatically takes place as for DC. With
incremental dimensioning IC (INC), spindle positioning can take place over several
revolutions.
AC(…)
Absolute dimension, value range AC: 0…359.9999 degrees
IC(…)
Absolute dimension, value range IC: 0…±99 999.999 degrees
DC(…)
Approach absolute value directly
ACN(…)
Absolute dimension, approach in negative direction
ACP(…)
Absolute dimension, approach in positive direction
Example of positioning spindle with negative direction of rotation
Position spindle 2 at 250° in negative direction of rotation.
N10 SPOSA[2]=ACN(250)
;The spindle decelerates if necessary and accelerates in the
;opposite direction to the positioning
;movement
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