Siemens SINUMERIK 880 SW 6 Planning Manual page 267

8 Spindle/PLC Interface (DB 31)
8.3 Signals to spindle
SERVO ENABLE
1 signal: Speed controller enable for spindle.
0 signal: Effects rapid deceleration of spindle at maximum braking current. The interface to
the drive is interrupted after the time delay set by machine data (MD 447*) has
run down. Only the actual values are held (follow-up mode).
Notes:
• The following applies if positioning is selected by the NC or PLC:
– If the signal is not set when the selection is made, the positioning operation is not
initiated until it is set.
– If the signal is cancelled during spindle positioning, the positioning operation is only
interrupted. It is resumed when the signal is set again.
• The following applies if positioning is selected by the command channel:
– If the signal is not set when the selection is made, the function is not executed. A
negative acknowledgement is entered in the user interface of the command channel.
– If the signal is cancelled during spindle positioning, the positioning operation is
interrupted. A negative acknowledgement is entered in the user interface of the
command channel.
• The following applies to synchronous mode:
– If the signal is not set when the selection is made, the spindle mode is not changed. No
alarm is output; the block change is nevertheless performed immediately.
– If the signal is cancelled during synchronous mode, the operation is only interrupted.
The spindle position can be changed (e.g. manually) as long as the signal is not set.
– Synchronous mode is reactivated when the signal is set again. Any change in the
spindle position during the interruption is not compensated. The angular offset between
the leading and following spindles no longer corresponds to that before the interruption.
–
8 14 ©
Siemens AG 1991 All Rights Reserved
05.91
DW K + 1, bit 14
6ZB5 410-0HE02
SINUMERIK 880 (PJ)