Siemens Sinumerik 840D sl Function Manual page 127

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Note
S For stopping types that are not used, the assignment must be inverted by
appropriately parameterizing MD36977[n]. This means that they are set to a "1"
signal and are permanently "inactive".
Exception:
S STOP E is interlocked by its own enable signal.
An external Stop E can also be initiated as an error response to a crosswise data
comparison of NCK and PLC--SPL or for PROFIsafe errors, instead of a STOP D.
On the NCK side, parameterization is realized using MD10097
$MN_SAFE_SPL_STOP_MODE = 4 -- and on the PLC side, using
DB18.DBX36.1=1.
This parameterization is checked in the crosswise data comparison between PLC--
SPL and NCK--SPL (see Chapter 7.5 "Safe programmable logic").
If the value 4 is parameterized in MD10097, without enabling the external STOP E
in all axes with SI function enable, then Alarm 27033 is output for all of these axes.
SGE to stop the drive
The following SGE are available to stop the drive:
Table 6-7
Deselect ext STOP A (=
SH deselection)
Deselect ext. STOP C
Deselect ext. STOP D
Deselect ext. STOP E
Notes:
SGE " ... " = 1
SGE " ... " = 0
If a stop request is selected simultaneously using several SGEs, then that with the highest
priority is executed.
If one of these SGEs changes, the "tolerance time for SGE changeover" is activated
(36950/p9550).
Feedback signals:
for SGE "deselect ext. STOP A": via SGA "status pulses cancelled" and SGA "STOP A/B
active"
for SGE "deselect ext. STOP C": via SGA "STOP C active"
for SGE "deselect ext. STOP D": via SGA "STOP D active"
for SGE "deselect ext. STOP E": via SGA "STOP E active"
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SINUMERIK 840D sl/SINAMICS S120 SINUMERIK Safety Integrated (FBSI sl) - - 10.2015 Edition
SGE to stop the drive
SGE
Pulse suppression
Braking with n
ramp
Braking along a path
ESR is initiated
Stopping is not initiated (it is deselected)
Stopping is initiated (it is selected)
Safety functions integrated in the system/drive
Stopping type
High
= 0 / OFF3 ...
set
...
Low
6.3 Safe Stops A- -F
Priority
6-127