SCALANCE network components
4.5 SCALANCE X Industrial Ethernet Switches
Industrial Ethernet
172 System Manual, 09/2019, C79000-G8976-C242-10
4.5.16 SCALANCE XF-200BA
4.5.16.1 Description
Figure 4-18 SCALANCE XF204-2BA DNA
The SCALANCE XF204-2BA DNA provides a Dual Network Access functionality (DNA or Y-
switch functionality). This device connects a redundant PROFINET ring to a fault tolerant
PROFINET system (R1 system). This enables the reliable connection of a ring topology to
the two redundant cables of the R1 system. The SCALANCE XF204-2BA DNA does not
support VLANs.
The SCALANCE XF204-2BA is a managed IE switch for factory and process automation.
This device supports VLANs and PROFINET system redundancy (S2) but has no Y
functionality. Both switches are NAMUR NE 21-compliant and have coated PCBs as well as
an extended temperature range of -40 °C to +70 °C. The maximum set-up altitude is 4000 m.
Due to their flat design, the devices can be mounted in control cabinets in a space-saving
way on the standard DIN rail. Two bus adapter interfaces offer the option of individual
equipment of the basic device with up to two modular bus adapters with two ports each. This
ensures optimum setup of electrical and optical linear, star and ring structure. Thanks to the
support of Configuration in Run (CiR/H-CiR), configuration changes defined via PROFINET
can be performed at the switch during operation.
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