Retract - Siemens SINUMERIK 840D sl Function Manual

R3: Extended stop and retract
9.2 Control-managed ESR - 840D sl only
Behavior of path axes
If NC-controlled extended stopping (MD37500 $MA_ESR_REACTION = 22) is parameterized
for a path axis, then the corresponding behavior is also transferred to all other path axes of
the channel.
Behavior of leading and following axes
If NC-controlled extended stopping (MD37500 $MA_ESR_REACTION = 22) is parameterized
for a leading axis, then the corresponding behavior is also transferred to all following axes of
the channel.
Note
During the extended stopping, a following axis of an electronic gearbox follows the leading
axes according to the parameterized/programmed motion principle. That is why independent
braking is not possible for the following axis during the times specified in MD21380
$MC_DELAY_TIME1 and MD21381 $MC_ESR_DELAY_TIME2.
A prerequsite for correct functioning of ESR is that all necessary enable signals must be set
and remain set.
9.2.5

Retract

Parameterization
NC-controlled retraction is parameterized with:
MD37500 $MA_ESR_REACTION = 21
Behavior
If the channel-specific system variable $AC_ESR_TRIGGER = 1 is set, and if there is a
retraction axis in this channel and $AA_ESR_ENABLE=1 is set for this, then LIFTFAST is
activated in this channel.
Precondition
The retraction position must have been programmed in the part program. The enable signals
must be set and remain set for retraction motion.
Rapid lift to the position defined with POLF is triggered using the modal program command
LFPOS (46th G code group).
The retracting movement configured with LFPOS, POLF for the axes selected with
POLFMASK or POLFMLIN replaces the path motion defined for these axes in the part program.
During retraction:
● The axes defined in POLFMASK independently travel to the positions specified with POLF.
● The axes defined in POLFMLIN travel to the positions specified with POLF in a linear
relationship.
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Function Manual, 01/2015, 6FC5397-2BP40-5BA2
Special functions