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

8.5.5.15

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 386)"):
– "Coarse" position synchronous operation threshold value
– "Fine" position synchronous operation threshold value
● For velocity coupling (see "Coupling relationship (CPLSETVAL) (Page 386)"):
– 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.
Special functions
Function Manual, 01/2015, 6FC5397-2BP40-5BA2
Meaning
Synchronous operation difference of the setpoint
Synchronous operation difference of the actual value
M3: Coupled axes
8.5 Generic coupling
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