Synchronous Operation Monitoring Stage 2 (Cpsyncop2, Cpsynfip2) - Siemens SINUMERIK 840D Function Manual

Supplementary conditions
● When considering the synchronous operation difference, an active coupling cascade is not
taken into account. This means: if in the considered coupling module, the leading axis is a
following axis in another coupling module, the current actual or setpoint position is still used
as input variable for the calculation of the synchronous operation difference. This
synchronous operation difference therefore does not show the total synchronous operation
error of the cascade.
● If the leading axis is not a real axis, but a simulated axis, then the actual value is not available
for the synchronous operation monitoring of the actual value. In this case, the modeled
actual values (according to the machine data setting) are used.
14.5.5.16

Synchronous operation monitoring stage 2 (CPSYNCOP2, CPSYNFIP2)

Synchronism monitoring stage 2
For active CP position coupling (setpoint or actual value coupling, see "Coupling relationship
(CPLSETVAL) (Page 510)"), after reaching the "COARSE"/"FINE" block change criterion (see
"Block change behavior (CPBC) (Page 512)"), the second stage of the synchronous operation
monitoring can be used to monitor that one of the threshold values of the first stage is
maintained on the actual value side, independent of the synchronism tolerance.
The following two threshold values must configured or programmed for the second stage of
synchronous operation monitoring:
● "Coarse" 2 position synchronous operation threshold value
● "Fine" 2 position synchronous operation threshold value
Technical background
As part of the "synchronous operation reached" and "exit synchronous window" monitoring
functions, for a correct assessment of any problems that arise during the multi-edge turning
(surface, waste, etc. ) and sometimes also for oscillating synchronous spindle it is often very
useful to define a tolerance range independent of the coarse/fine synchronous operation
tolerances of the first stage of the synchronous operation monitoring (similar to exact stop and
standstill monitoring for axes) in order to obtain a configurable error message or warning.
Configuration
The threshold values for the second stage of the synchronous operation monitoring are set in
the machine data:
MD37202 $MA_COUPLE_POS_TOL_COARSE_2 (second threshold value for "coarse
synchronous operation")
Axes and spindles
Function Manual, 06/2019, A5E47437747B AA
M3: Coupled axes
14.5 Generic coupling
531