Controlling Synchronous Spindle Coupling Via Plc - Siemens SINUMERIK 840D sl Function Manual

S3: Synchronous spindle
14.1 Brief description
POS , POS
FS LS
Deactivation positions POS
respectively referred to the defined reference point value.
Range of POS
References:
/FB1/ Function Manual, Basic Functions; Reference Point Approach (R1)
COUPOF during the motion
If synchronous mode is deselected while the spindles are in motion with COUPOF, the
following spindle continues to rotate at the current speed (n
read with system variable $AA_S in the NC parts program.
The following spindle can then be stopped from the parts program with M05, SPOS, SPOSA or
from the PLC with the appropriate interface signal.
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)
886
, POS : 0 ... 359,999°.
FS LS
The block change is then approved.
COUPOFS(FS, LS)
The block change is then approved.
and POS match the actual positions of FS and LS
FS LS
FS
). The current speed can be
FS
) have no meaning if a coupling was
Function Manual, 09/2009, 6FC5397-1BP20-0BA0
Extended Functions