Siemens SINUMERIK 840D sl Function Manual page 910

Synchronous Spindles (S3)
Brief description
COUPOFS with stop of following spindle
Another deactivation method for a synchronous spindle coupling, i.e. by stopping the
following spindle, has been added:
● Deactivating a coupling as quickly as possible and stop without specifying the position.
● Deactivating the coupling with stop of following spindle at the programmed position.
Condition:
COUPOFS(FS, LS) and COUPOFS(FS, LS, POS
active.
14.1.7 Controlling synchronous spindle coupling via PLC
Controlling following spindle via PLC
Using the coupling-specific, axial VDI interface signals, it is possible to control
synchronization motions for the following spindle from the PLC program. This offers the
option of utilizing the PLC to disable, suppress or restore a synchronization motion for the
following spindle specified by offset programming.
These signals have no effect on the leading spindle. The following coupling-specific VDI
signal (PLC → NCK) is available:
IS "Disable synchronization" (DB31, ... DBX31.5)
"Disable synchronization"
The synchronization motion for the following spindle is suppressed by the PLC via axial IS
"Disable synchronization" (DB31, ... DBX31.5).
When the main run advances to a block containing part program statement COUPON (FS,
LS, offset), the following interface signal is evaluated for the following spindle:
IS "Disable synchronization" (DB31, ... DBX31.5).
● When IS "Disable synchronization" (DB31, ... DBX31.5) = 0, the position offset is applied
● When IS "Disable synchronization" (DB31, ... DBX31.5) = 1 only continuous speed
910
The block change is then approved.
COUPOFS(FS, LS)
The block change is then approved.
as before.
synchronism is established. The following spindle does not execute any additional
movement.
The coupling then responds analogously to a programmed COUPON (FS, LS).
) have no meaning if a coupling was
FS
Function Manual, 03/2009, 6FC5397-1BP10-4BA0
Extended Functions