Siemens SINUMERIK 840D sl Function Manual page 906

S3: Synchronous spindle
14.4 Special features of synchronous mode
Resynchronize following spindle
Resynchronization is started for the relevant following spindle and commences as soon as
the low-high edge of following interface signal is detected:
DB31, ... DBX31.4 (resynchronization)
The NC acknowledges the detection of the edge by outputting the NC/PLC interface signal:
DB31, ... DBX99.4 (synchronization running)
The interface signal "Synchronization running" is reset if:
● synchronization of the following spindle has been completed up to the stage at which
● the NST DB31, ... DBX31.4 (resynchronization) was reset.
Response of synchronous signals during additional movements for the following spindle
The superimposed component is calculated to establish the synchronism signals.
Example
Program code
N51 SPOS=0 SPOS[2]=90
N52 OUPDEF(S2,S1,1,1,"FINE","DV")
N53 COUPON(S2,S1,77)
N54 M0
N55 SPOS[2]=0 FA[S2]=3600
N56 M0
N60 M2=3 S2=500
N65 M0
Note
The axis enable signals can be canceled to interrupt a movement overlaid on the following
spindle (e.g. SPOS). This component of the movement is not affected by IS "NC/PLC
interface signal" DB31, ... DBX31.4 (resynchronization), but is restored by the REPOS
operation.
906
there is synchronism at the setpoint end.
Comment
; Offset=77°, "coarse", "fine"
synchronous run signals exist.
; Difference in speed, synchronism
signals "coarse", "fine" are reported
; (note tolerances, see above)
; Offset=0°, "coarse", "fine" synchronous
run signals exist.
; difference in speed, synchronism
signals "coarse", "fine" are reported.
; offset undefined, synchronism signals
"coarse", "fine" are reported.
; (Note tolerances, see above)
Function Manual, 09/2009, 6FC5397-1BP20-0BA0
Extended Functions