Siemens offers the Scalance XF-200BA line of compact switches. The flexible use of various bus adapters allows users to set up electrical and optical line, star and ring structures. Bus adapters are available with RJ45, SCRJ and LC connection systems. Two types of switches are available: Scalance XF204-2BA, a standard switch for universal, cross-industry use, and the Scalance XF204-2BA DNA Y-switch for special tasks in process automation. An extended temperature range from -40 to +70 °C together with approval for use in hazardous areas (Atex Zone 2, IECEx) allow reliable use, even in harsh environments.
Both versions support up to four ports and various firmware-functionalities. For example, virtual LANs divide the physical network into several virtual sections to minimise the number of broadcasts in the network. Redundancy protocols permit a high availability of machines and plants.
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