Siemens SINUMERIK 840D sl Function Manual page 195
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2.12.3
Supplementary conditions
● The option "different interpolation cycle" can only be used in conjunction with NCU link
● It is only permissible to use link axes on NCUs whose IPO cycle length is the same as
● Axis container
● Acceleration and deceleration processes on axes with slower interpolation or position
2.12.4
Activating NCU links with different interpolation cycles
● Setting different IPO cycle times in one link grouping
● Set bit 1 in machine data:
● The option "NCU link with different interpolation cycles" is available.
Example
Please refer to Section "Examples" for an example of eccentric turning using the "NCU link
with different interpolation cycles" function.
2.12.5
Different IPO cycles, behavior at power ON, RESET ...
The necessary setpoint delay on the servo causes a delay for two link cycles during power
up, at reset, at New Config, etc. At reset, an additional delay of at least two link cycles is
required to account for the necessary synchronization.
Extended Functions
Function Manual, 03/2009, 6FC5397-1BP10-4BA0
Several Operator Panels on Several NCUs, Distributed Systems (B3)
(options, dependent on the axis number). The connected NCUs must all be fitted with the
link module hardware components.
– The configuration rules outlined in "Configuration of a link grouping" apply.
– Link axes must be configured as described in Section "Configuration of link axes".
– Axis containers can be used as described in Section "Axis container".
that of the link cycle,
– It is only permissible to switch axis containers with rotating spindles on NCUs with IPO
cycles that are equal to the link cycle.
– Axis containers can also be switched with motionless axes and spindle on the NCUs
with faster IPO cycles.
controller cycles will cause contour errors.
MD18780 $MN_MM_NCU_LINK_MASK
NCU link with different interpolation cycles
195
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