3 Safety-Related Functions 11.03
3.2 External STOPs
© Siemens AG 2003 All Rights Reserved
3-78 SINUMERIK 840D/SIMODRIVE 611 digital SINUMERIK Safety Integrated (FBSI) - Edition 11.03
Note
• For stopping types that are not used, the assignment must be inverted
by parameterizing MD 36977[n] accordingly.
They are set to signal "1" and are permanently "inactive".
Exception:
• STOP E is interlocked by its own enable signal.
A 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.
Parameterization on the NCK side is carried-out via MD10097:
$MN_SAFE_SPL_STOP_MODE=4, of the PLC side via DB18, DBX36.1=1.
This parameterization is checked in the crosswise comparison between PLC-
SPL and NCK-SPL (refer to Chapter 3.10 "Safe programmable logic").
If the value 4 is parameterized in MD10097, without enabling the external Stop
E in all axes with SI function enable, Alarm 27033 is output for all of these axes.
The following SGEs are available to stop the drive:
Table 3-10 SGEs to stop the drive
SGE Stop type Priority
De-selection ext. STOP A (= SH de-selection) Pulse cancellation High
De-selection ext. STOP C Braking with n
set
= 0 ...
De-selection ext. STOP D Braking along the path ...
De-selection ext. STOP E ESR is initiated Low
Notes:
SGE "..." " = 1 Stopping is not triggered (de-selected)
SGE "..." " = 0 Stopping is triggered (selected)
If a stop request is selected via several SGEs simultaneously, the request with the
highest priority is executed.
If one of these SGEs is changed, the "tolerance time" for SGE switchover is activated
(MD 36950/1350).
Checkback signals:
for SGE "de-select ext. STOP A": via SGA "status pulses cancelled"
and SGA "STOP A active"
for SGE "de-select ext. STOP C": via SGA "STOP C active"
and SGE "de-select ext. STOP D": via SGA "STOP D active"
and SGE "de-select ext. STOP E": via SGA "STOP E active"
SGEs to stop the drive
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