13
12.98 Additional Functions
13.5 Extended sto
in
and retract
as of SW 5
13
840D
NCU 571
840D
NCU 572
NCU 573
FM-NC 810D 840Di
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Siemens AG 2000. All rights reserved
SINUMERIK 840D/840Di/810D/FM-NC Programming Guide Advanced (PGA) – 04.00 Edition
13-447
13.4.6 Response of EG at Power ON, RESET, mode change, block search
After Power ON there are
no
active couplings.
Active couplings are retained after reset and mode
change.
With block search, commands for switching, deleting
and defining the electronic gear are not executed or
retained, instead they are skipped.
13.4.7 The electronic gear's system variables
By means of the electronic gear's system variables,
the part program can determine the current states of
an EG axis grouping and react to them if required.
Additional notes
The system variables for the electronic gear are
listed in the Annex. They are characterized by
names beginning with:
$AA_EG_ ...
or
$VA_EG_ ...
13.5 Extended stopping and retract (as of SW 5)
Function
The "Extended stopping and retract" function ESR
provides a means to react flexibly to selective error
sources while preventing damage to the
workpiece.
"Extended stopping and retract" provides the
following three part reactions:
• "
Extended stopping
" (independent drive, SW 5)
is a time-delayed stop.
• "
Retract
" (independent of drive)
means "escaping" from the machining plane to a
safe retraction position. This means any risk of
collision between the tool and the workpiece is
avoided.
• "
Generator operation
" (independent of drive)
For the cases in which the energy of the DC link
is not sufficient for a safe retraction, generator
operation is possible.
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