PROFINET S2 devices are connected to a high-availability R1 system with the SCALANCE XF204-2BA DNA ("Y‑switch"), which was previously only possible with PROFIBUS systems.

• The Y-switch combines a redundant PROFINET ring consisting of S2 devices (field) with a high-availability PROFINET system (R1 system)
• This links the S2 devices to an H-system, further reducing the failure of field device communication with the CPU and thus significantly increasing the availability of the network as a whole.

Features:

• Device diagnostics with LED (voltage, errors, redundancy)
• Remote diagnostics are possible with the signaling contact (signal mask can be set locally using buttons), PROFINET, SNMP, and Web browser
• Automatic email send function
• Interface for mounting BusAdapters from the SIMATIC ET 200SP HA product range

Y-switch functionality

The SCALANCE XF204-2BA DNA offers Y-switch functionality for connecting S2 devices to a high-availability R1 system. As well as the two Y-switch ports, two other switch ports are also available at the device end. These can for example be used to operate an MRP ring.

Note:

Please note that when SCALANCE XF‑200BA DNA is used, at present the diagnostics can only be carried out by one CPU in the H System and configuration changes during operation (CiR function) are not supported (FW update under development).