Deselecting The Parts Program's Synchronous Mode - Siemens SINUMERIK 840D sl Function Manual

14.1.6

Deselecting the parts program's synchronous mode

Deactivate coupling COUPOF, COUPOFS
Synchronous mode between the specified spindles is canceled by the parts program
instruction COUPOF. Three variants are possible.
If synchronous mode is canceled between the specified spindles using COUPOF, then it is
irrelevant whether this coupling is permanently configured or user defined. The leading and
following spindles can be at standstill or in motion when synchronous operation is
deactivated.
On switching off the synchronous mode with COUPOF, the following spindle is put into control
mode. The originally programmed S-word is no longer valid for the FS, the following spindle
can be operated like any other normal spindle.
When the coupling is deactivated with COUPOF, a block preprocessing stop STOPRE is
generally initiated internally in the control.
The COUPOFS instruction can be used to deactivate a coupling either as quickly as possible
with a stop and no position details or with a stop at the programmed position.
COUPOF variants
Three different methods can be used to deselect synchronous mode with COUPOF:
1. Deactivation of coupling as quickly as possible
2. A coupling is not deselected until the following spindle has crossed the programmed
3. A coupling is not deselected until the following spindle and leading spindle has crossed
Extended Functions
Function Manual, 09/2009, 6FC5397-1BP20-0BA0
The block change is enabled immediately.
COUPOF(FS, LS)
deactivation position POS
The block change is then approved.
COUPOF(FS, LS, POS
the programmed deactivation positions POS
The block change is then approved.
COUPOF(FS, LS, POS
Note
If the LS and/or FS is in axis mode before switching off the synchronous coupling, the
axis mode is left with use of the spindle identifier and the speed control mode is activated.
If the spindle is switched off with use of the axis identifier, no changeover takes place.
Before shutdown, the LS must be in the setpoint-side standstill.
.
FS
)
FS
FS
, POS )
FS LS
S3: Synchronous spindle
14.1 Brief description
and POS .
LS
885