Nc-Controlled Stopping - Siemens SINUMERIK 840D sl Programming Manual

Note
Retraction initiated via $AC_ESR_TRIGGER is locked, in order to prevent multiple
retractions.
Single axis retraction
With single axis retraction, the retraction position of the single axis must have been
programmed with
● $AA_ESR_ENABLE = 1
● <Axis> must be a single axis at the time of triggering ($AAAA_ESR_TRIGGER = 1).
● <Type> must be either 1 or 2.
Retraction direction during rapid lift
The frame valid at the time when the lift fast is activated is taken into consideration.
Note
Frames with rotation also affect the direction of lift via
Axis replacement
Retraction axes must always be assigned to exactly one NC channel and may not be
switched among the channels. When an attempt is made to exchange a retraction axis in
another channel, an alarm is output. Only once this axis has been deactivated again using
$AA_ESR_ENABLE[AX] = 0 can it be exchanged in a new channel. Once the axis has been
exchanged, axes can be acted upon again with $AA_ESR_ENABLE[AX] = 1.
Neutral axes
Neutral axes cannot undertake NC-controlled ESR.
16.11.1.2

NC-controlled stopping

Function
The NC-controlled stopping is activated for the stopping axes configured in the channel by
setting system variable $AC_ESR_TRIGGER (or $AA_ESR_TRIGGER for single axes).
Job Planning
Programming Manual, 03/2013, 6FC5398-2BP40-3BA1
and the following conditions must be satisfied:
POLFA
Additional functions
16.11 Extended stop and retract (ESR)
.
POLF
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