01/2007
11.3 System data
11-304
© Siemens AG 2007 All Rights Reserved
SINUMERIK 840Di sl Manual (HBIsl) – 01/2007 Edition
The maximum value for the NCK CPU time share of 75 % must not be ex-
ceeded. A value greater than 75 % can lead to significant impairment (slowing
down) of Windows XP applications. If necessary, the values must be adapted to
the system clock cycle/position controller cycle (DP cycle time) and/or interpola-
tion cycle.
/FB/ Description of Functions, Special Functions
G3 Cycle Times
Table 11-12 Cycle times: Machine data
Number Identifier Name/remarks Refer-
ence
General ($MN_ ... )
10050 SYSCLOCK_CYCLE_TIME System clock cycle/only display data; is always
equal to the equidistant PROFIBUS DP cycle.
Note: With 840Di sl, only for display!
10060 POSCTRL_SYSCLOCK_TIME_RATIO Factor for the position control cycle/is set fixed to
the factor 1.
Note: Is not displayed with the 840Di sl!
10062 POSCTRL_CYCLE_DELAY Position control cycle offset
10070 IPO_SYSCLOCK_TIME_RATIO Factor for the interpolator cycle/can be freely se-
lected in integer multiples.
!
Caution
If you change the cycle times, check the behavior of the drive in all operating
modes before you finish commissioning.
Note
The smaller the cycle times (PROFIBUS DP cycle) chosen, the greater the
control quality for the drive and the better the surface quality on the workpiece.
References
Machine data
11 NCK Commissionin
with HMI Advanced
To Next Page
Loading...
