Siemens SIMATIC ET 200SP Manual page 45

BaseUnit with voltage supply
Enable new AS-i network (light BaseUnit)
Select this option if the module is plugged into a light BaseUnit.
Connect the module to the AS-i cable (ASI+ / ASI-) via the BaseUnit. The module is supplied
with voltage from the AS-i cable. Connect the AS-i cable to an AS-i power supply unit or to a
combination of a data decoupling unit and a suitable power supply unit.
There is no module-internal connection of the AS-i cable to the module plugged in on the left.
With TIA Portal or with STEP 7 (classic) the F-CM AS-i Safety module is configured
independently of the configuration of the module inserted on the left (normally: CM AS-i
Master ST).
Connection of the BaseUnit only to safety extra-low voltage with limiting of output voltage to
max. 40 V under fault condition
Connect the BaseUnit only to AS-i power supply units that meet the requirements named in
Section Terminal assignment (Page 27), "Power supply units for AS-Interface". Connection
to higher voltage may result in death, severe injury, and serious property damage.
Use AS-i network of the left module (dark BaseUnit)
Select this option if the module is plugged into the dark BaseUnit.
The module inserted on the left must be a CM AS-i Master ST module (normal situation) or
another F-CM AS-i Safety ST module (special case).
The module is connected to the AS-i cable of the module plugged in on the left and supplied
with voltage via the module-internal connection.
The module-internal connection is designed only for supplying power to the
F-CM AS-i Safety ST I/O module. If several dark BaseUnits are connected in series, a direct
connection of the dark BaseUnits to the AS-i cable using external wiring is additionally
recommended.
Supplying power to AS-i modules, e.g., AS-i slaves, via the terminals of the dark BaseUnit is
not permitted.
With TIA Portal, the F-CM AS-i Safety ST module uses the same AS-Interface subnet as the
module inserted on the left (normally: CM AS-i Master ST).
Fail-safe Module F‑CM AS‑i Safety ST (3RK7136‑6SC00‑0BC1)
Manual, 03/2017, A5E03957059020A/RS-AB/002
WARNING
Assigning parameters / Setting the address space
6.2 Explanation of the parameters
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