Synchronism Monitoring Stage 1 (Cpsyncop, Cpsynfip, Cpsyncov, Cpsynfiv) - Siemens SINUMERIK 840D Function Manual

14.5.5.15

Synchronism monitoring stage 1 (CPSYNCOP, CPSYNFIP, CPSYNCOV, CPSYNFIV)

Synchronism monitoring stage 1
In each interpolator clock cycle, the synchronous operation of the coupling group is monitored
– both on the setpoint and actual value sides. The synchronous operation monitoring responds
as soon as the synchronous operation difference (the difference between the setpoint or actual
value of the following axis and the value calculated from the setpoints or actual values of the
leading axes according to the coupling rule) reaches one of the following programmed
threshold values:
● At setpoint / actual value coupling (see "Coupling relationship (CPLSETVAL) (Page 510)"):
– "Coarse" position synchronous operation threshold value
– "Fine" position synchronous operation threshold value
● For velocity coupling (see "Coupling relationship (CPLSETVAL) (Page 510)"):
– Threshold value of "Coarse" speed synchronous operation
– Threshold value of "Fine" speed synchronous operation
The actual synchronous operation difference can be read out with the following CP system
variables:
System variable
$AA_SYNCDIFF [FAx]
$VA_SYNCDIFF [FAx]
Note
Synchronous operation differences are signed and enable the advance or delay of the following
axis to be determined.
Axes and spindles
Function Manual, 06/2019, A5E47437747B AA
Meaning
Synchronous operation difference of the setpoint
Synchronous operation difference of the actual value
M3: Coupled axes
14.5 Generic coupling
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