Multiple Distribution And Multiple Interlocking - Siemens SINUMERIK 840D sl Function Manual

05.08
7.1.5

Multiple distribution and multiple interlocking

Interlocking functions between the SGE/SGA are implemented in the NCK channel
in the NCK–SPL. However, in order to relieve the NCK–SPL, it is also possible to
pre–process signals between the NCK–SPL and NCK monitoring channel using
the "multiple distribution" and "multiple interlocking" functions.
Note
The multiple distribution/interlocking that can be parameterized in the NCK
machine data must be programmed by the user on the PLC side.
Processing the NCK–SGE for 840D sl (multiple distribution)
Axis–specific/spindle–specific machine data is used to define which internal SPL
output is to be used for which function and which axis/spindle. Under the condition
that certain axes/spindles belong to the same safety group, it is possible to imple-
ment multiple distribution (1 NCK–SPL output is assigned, for example, to 3 axes
with the same function). In addition, when an internal NCK–SPL output is selected
via MD, it is also possible to define whether the inverted signal is also to be pro-
cessed.
NCK–SPL
OUTSI
Output 1
Output 2
Output x
...
Output n
Fig. 7-8
© Siemens AG 2008 All Rights Reserved
SINUMERIK 840D sl/SINAMICS S120 SINUMERIK Safety Integrated (FBSI sl) – 05.2008 Edition
Multiple
distribution
...
...
...
...
...
Multiple distribution for NCK––SGE
Connecting Sensors/Actuators
7.1 Safety–related input/output signals
NCK
SGE/SGA
Inversion
Inversion
interface
...
...
SGE ...
Yes/no
... ...
... ...
SGE ... Yes/no
...
...
... ...
SGE ...
Yes/no
...
...
...
Monitoring
comparators
for axis 1
for axis 2
for axis 3
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