• Integration into optical Industrial Ethernet line, star and ring topologies
• Fast bridging of network nodes using optical relays within 10 ms in the event of a fault (e.g. power failure)
• Maintenance of network communication thanks to bridging of the failed network components
• No activation of the redundancy manager when resetting a network component in MRP and HRP ring topologies thanks to previous establishment of link;
  this avoids a message burst in the network in the case of planned maintenance work. Thanks to the configurable connection delay, network components are not switched back into the network until they have been fully powered up and the link has been established (only on versions with TAP function).
• Simple integration of the SCALANCE XC100-4OBR into existing 100/1000 Mbit/s networks thanks to extensive portfolio of FO adapter cables
• Simple diagnostics via signaling contact and LED on-site

Network topology and network configuration

The Industrial Ethernet SCALANCE XC100-4OBRs with IP20 degree of protection are usually installed in a control cabinet together with the network components to be connected.

When configuring the network, the following parameters have to be taken into account for calculating the cable length between two devices:

• The line attenuation of the fiber-optic cables used
• The attenuation of the optical relay
• The maximum number of SCALANCE XC100-4OBR bypass relays that can be activated simultaneously

Commissioning and diagnostics

Before commissioning the SCALANCE XC100-4OBR, the reset delay and the voltage range to be monitored must be selected using the SET pushbutton on the device.

The following information is displayed by LEDs on site:

• Bypass
• Display mode
• Power supply

The SCALANCE XC100-4OBR can also be monitored using the floating signaling contact. A digital input contact enables remote function checking of the relay.