SCALANCE network components4.5 SCALANCE X Industrial Ethernet SwitchesIndustrial Ethernet172 System Manual, 09/2019, C79000-G8976-C242-104.5.16 SCALANCE XF-200BA4.5.16.1 DescriptionFigure 4-18 SCALANCE XF204-2BA DNAThe 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 tolerantPROFINET system (R1 system). This enables the reliable connection of a ring topology tothe two redundant cables of the R1 system. The SCALANCE XF204-2BA DNA does notsupport 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 Yfunctionality. Both switches are NAMUR NE 21-compliant and have coated PCBs as well asan 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-savingway on the standard DIN rail. Two bus adapter interfaces offer the option of individualequipment of the basic device with up to two modular bus adapters with two ports each. Thisensures optimum setup of electrical and optical linear, star and ring structure. Thanks to thesupport of Configuration in Run (CiR/H-CiR), configuration changes defined via PROFINETcan be performed at the switch during operation.
