Siemens SINAMICS G120 Function Manual page 44

Installing
4.2 Connection via PROFIsafe
Shared Device
The PROFINET "Shared Device" function allows two controls to access the same
PROFINET IO device, e.g. on a SIMATIC ET 200 I/O system or on an inverter. Typical
applications for "Shared Device" are systems, in which a standard CPU and a fail-safe CPU
are used as separate controllers:
● The fail-safe controller (F-CPU) is responsible for the safety functions in the inverter or in
the SIMATIC ET 200 I/O system.
● The standard controller transfers all other signals.
Figure 4-3
Communication I-slave ↔ slave
It is only possible to use an F-CPU as I slave via PROFIBUS.
The SIMATIC ET 200pro FC-2 converter permits I-slave-slave communication. On one hand,
the F-CPU is slave on PROFIBUS – and on the other hand, controls the safety functions of
the inverter via PROFIsafe.
PROFIsafe communications between SINAMICS inverters and an I-slave is not possible.
Figure 4-4
44
Shared device is possible with every inverter
The I-slave-slave communication is only possible with ET 200pro FC-2
Safety Integrated - SINAMICS G110M, G120, G120C, G120D and SIMATIC ET 200pro FC-2
Function Manual, 04/2014, FW V4.7, A5E34261271B AA