Siemens SINUMERIK 840D sl Function Manual page 306

M3: Coupled axes
5.5 Generic coupling
of the leading axes according to the coupling rule) reaches one of the programmed threshold
values:
Command
CPSYNCOP[FAx]
CPSYNFIP[FAx]
CPSYNCOV[FAx]
CPSYNFIV[FAx]
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.
Status of the coupling during synchronous operation
State
Not synchronized
"Coarse" synchronous operation
reached
"Fine" synchronous operation
reached
The status of the coupling can be read with the following system variables:
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Meaning
Threshold value of position synchronous operation "Coarse"
Threshold value of position synchronous operation "Fine"
Threshold value of speed synchronous operation "Coarse"
Threshold value of speed synchronous operation "Fine"
Meaning
Synchronous operation difference of the setpoint
Synchronous operation difference of the actual value
Description
As long as the synchronous operation difference is greater than
CPSYNCOP or CPSYNCOV, the coupling group is considered as not
synchronous.
The synchronous operation difference has reached the threshold
value for the "Coarse" position synchronous operation
(CPSYNCOP) or "Coarse" speed synchronous operation
(CPSYNCOV).
In case of actual value-based synchronous operation difference,
this results in the following NC/PLC interface signal:
DB31, ... DBX98.1 (coarse synchronous operation)
The synchronous operation difference has reached the threshold
value for the "Fine" position synchronous operation (CPSYNFIP) or
"Fine" speed synchronous operation (CPSYNFIV).
In case of actual value-based synchronous operation difference,
this results in the following NC/PLC interface signal:
DB31, ... DBX98.0 (fine synchronous operation)
Function Manual, 09/2011, 6FC5397-2BP40-2BA0
Special Functions