Siemens SINUMERIK 840D sl Function Manual page 212

Connecting sensors and actuators
8.3 Modular PROFIsafe I/O interface
● $MN_PROFISAFE_IN_SUBS[n] (see substitute values)
● $MN_PROFISAFE_IN_NAME[n]
Substitute values
If, within the scope of a specific machine configuration, the corresponding PROFIsafe module
for a slot is not connected, static substitute values can be parameterized to supply the
associated SPL inputs ($A_INSE).
Parameterization
The substitute values are parameterized using machine data
13305:$MN_PROFISAFE_IN_SUBS[n].
The substitute value for SPL input defined as lower range limit in MD10388:
$MN_PROFISAFE_IN_ASSIGN, is parameterized in MD $MN_PROFISAFE_IN_SUBS, bit 0.
In bit 1, the substitute value for the SPL input "lower area limit + 1" etc.
Thus, substitute values are input into MD $MN_PROFISAFE_IN_SUBS referred to the SPL
input area defined in MD $MN_PROFISAFE_IN_ASSIGN. If substitute values outside this SPL
input area are set to a value of 1 in MD $MN_PROFISAFE_IN_SUBS, then Alarm 27205
"PROFIsafe: Number of signals in MD %1[%2] < > MD %3[%4] is displayed.
Activation
In order to provide machinery manufacturers with the option of defining different substitute
values for various machine constellations for the SPL input area belonging to a PROFIsafe
input module, the output of parameterized substitute values is explicitly activated in a machine
data set using:
MD13304 $MN_PROFISAFE_IN_SUBS_ENAB_MASK[m], bit x = 1
Slot mode
As a result of the possibility of being able to activate or deactivate a slot as well as to activate
substitute values, the following slot modes are obtained:
● Active
In the control, a PROFIsafe driver is active for the slot - and the F-net data transferred from
the associated PROFIsafe input module is output to the SPL inputs.
● Passive
In the control, there is no PROFIsafe driver active for the slot, and the parameterized
substitute values are output at the SPL inputs.
● Inactive
In the control, there is
SPL inputs. The inputs assigned using MD10388 $MN_PROFISAFE_IN_ASSIGN remain
in the default state 0.
212
no PROFIsafe driver active for the slot, and no data is output at the
Function Manual, 12/2017, 6FC5397-4BP40-6BA1
Safety Integrated