Siemens Sinumerik 840D sl Function Manual page 203

10/15
Processing the NCK- -SGA for 840D sl (multiple assignment)
Axis--specific/spindle--specific machine data is used to define which SGA from
which axis/spindle must be assigned to which NCK--SPL input. It is possible to
implement a multiple assignment (SGA from several axes are assigned to 1 input)
provided that certain axes/spindles belong to the same safety group. The SGA are
then ANDed and the result output at the NCK--SPL input. In addition, when an
NCK output is selected via an MD, it is also possible to define whether the signal is
to be output in an inverted form before it is ANDed.
NCK- -SPL
INSI
Input 1
Input 2
Input x
...
...
...
...
...
Input n
Figure 7-8 Multiple assignment for NCK--SGA
Example
Axes 1, 2 and 3 belong to one safety area. For these axes, the message "axis
safely referenced" should be output at one NCK--SPL input (INSI) (this means that
the message is output at the input if the message (signal) is present for all 3 axes).
The machine data must be parameterized as follows:
Axis 1: MD36987 $MA_SAFE_REFP_STATUS_OUTPUT = INSI x
Axis 2: MD36987 $MA_SAFE_REFP_STATUS_OUTPUT = INSI x
Axis 3: MD36987 $MA_SAFE_REFP_STATUS_OUTPUT = INSI x
© Siemens AG 2015 All Rights Reserved
SINUMERIK 840D sl/SINAMICS S120 SINUMERIK Safety Integrated (FBSI sl) - - 10.2015 Edition
Multiple
Inversion
assignment
...
Yes/ no
...
...
&
Yes/ no
...
...
Yes/ no
... . ..
Connecting Sensors/Actuators
7.1 Safety- -relevant input/output signals
NCK- -SGE/
Monitoring
SGA
comparators
interface
...
...
SGA
...
...
SGA ...
...
...
...
SGA
...
for axis 1
for axis 2
for axis 3
7-203