Description Of The Device; Properties And Functions - Siemens SCALANCE XF-200BA Operating Instructions Manual

Description of the device

3.1

Properties and functions

Y functionality
With the IE switch SCALANCE XF204-2BA DNA you can connect a redundant PROFINET
ring consisting of S2 devices (field area) to a fault-tolerant PROFINET system (R1 system).
DNA stands for Dual Network Access or also Y switch functionality. Devices with Y functionality
do not support VLANs.
The SCALANCE XF204-2BA DNA is connected via both ring ports to a PROFINET ring. Via
the two Y ports it is connected to a fault-tolerant PROFINET system. With this link the S2
devices are connected to an H system. Due to this, communication failures of the field devices
to the CPU are further reduced and the availability of the entire network significantly increased.
Via the SCALANCE XF204-2BA the Y switch is connected to the H-CPU. The SCALANCE
XF204-2BA does not have Y functionality, it supports VLANs.
SCALANCE XF-200BA
Operating Instructions, 09/2018, C79000-G8976-C470-03
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