A.1.3.7 Profinet Media Redundancy - Siemens SINAMICS Configuration Manual

Overview of important parameters
Overview of important parameters
Note
For a description of the parameters, see the converter List Manual.
p8929
p9601
p9801
A.1.3.7 PROFINET media redundancy
To increase the availability of PROFINET, you can create a ring topology. If the ring is
interrupted at one point, the data paths between the devices are automatically reconfigured.
Following reconfiguration, the devices can once again be accessed in the resulting new
topology.
To create a ring topology with media redundancy, route the two ends of a line-type PROFINET
topology to a switch which serves as redundancy manager (e.g. a suitable SCALANCE switch).
Closing the linear bus topology is realized using two ports (ring ports) of the SCALANCE
redundancy manager, which monitors the data telegrams in the PROFINET ring. All other
connected PROFINET nodes are redundancy clients.
The Media Redundancy Protocol (MRP) is the standard procedure for media redundancy.
Using this procedure, a maximum of 50 devices can participate in each ring. In the case of an
interrupted cable, data transfer is only briefly interrupted as the system switches over to the
redundant data path.
If a short-term interruption is not permitted, data transfer must be set to IRT High Performance.
The uninterruptible MRRT is automatically set. A SIMOTION controller (or another suitable
controller) is required in this case.
The integrated PROFINET IO interfaces of the Control Units CU320‑2 PN can be configured
as redundancy clients.
From a CBE20, only the first two ports are capable of establishing a ring topology. Routing
between the integrated PROFINET IO interfaces and a CBE20 is not possible.
A.1.3.8 PROFINET system redundancy
Thanks to SINAMICS PROFINET Control Units, the assembly of system-redundant systems
is possible.
Precondition for system-redundant systems is a so-called H-system. The H-system consists
of 2 fault-tolerant controls – master and reserve CPU – which are constantly synchronized via
fiber-optic cables. If one controller fails, the other automatically takes on the job. This reduces
system downtimes.
Industrial Security
Configuration Manual, 08/2017, A5E36912609A
PN number of remote controllers
SI enable functions integrated in the drive (Control Unit)
SI enable functions integrated in the drive (Motor Module)
Communication
A.1 Communication
169