• Setup of electrical and optical Industrial Ethernet line, star and ring topologies
  • Use in ring topologies together with SCALANCE X-200, SCALANCE X-300, SCALANCE XM-400 and XR-500
• Fast redundancy in the ring with:
  • High Speed Redundancy Protocol (HRP), max. 0.3 second reconfiguration time with 50 switches in the ring
  • PROFINET MRP (Media Redundancy Protocol), max. 0.2 second reconfiguration time of the ring with 50 switches in the ring
• The functioning of the ring is continuously monitored by the integrated redundancy manager. It recognizes failure of a transmission path in the ring or failure of a SCALANCE XC-200 and activates the substitute path within 0.3 seconds or 0.2 seconds with MRP
• Uncrossed connecting cables can be used due to Autocrossover function integrated in the ports
• Easy diagnostics using signaling contact, SNMP and web browser
• Easy copper cable diagnostics via web browser for localizing cable breaks
• Fiber monitoring: Easy fiber-optic cable port diagnostics by means of web browser and SNMP for early detection of changes on the fiber-optic cable line or at the fiber-optic cable ports
• Integration into the diagnostics of a PROFINET controller with expanded diagnostics functions for a consistent diagnostics concept, including network infrastructure
• Diagnosis of data traffic by means of a parameterizable mirror port with a standard commercial network analyzer
• Optimized support of PROFINET real-time communication (RT) through prioritizing
• Fast device replacement in the event of a fault by using the optional C-PLUG removable data storage medium (not included in scope of supply)
• Redundant interfacing to company networks
  The XC-200 switches support the standardized redundancy procedures Spanning Tree Protocol (STP) and Rapid Spanning Tree Protocol (RSTP). This enables a subnetwork to be connected redundantly to a higher level corporate network with reduced requirements for the reconfiguration time (in the order of seconds)
• Support of virtual LANs (VLANs)
  For structuring Industrial Ethernet networks with a fast growing number of users, a physically existing network can be divided into several logical networks
• Load limiting with use of multicast protocols (e.g. querier, video)
  By learning the multicast sources and targets (IGMP snooping), XC-200 switches can also filter multicast data traffic and therefore limit the load in the network. Multicast and broadcast traffic can be limited.

Network topology and network configuration

The SCALANCE XC-200 Industrial Ethernet switches with IP20 degree of protection are usually installed in a control cabinet together with the stations to be connected. Electrical and optical versions can be installed together in star, line and ring topologies.

The following network structures and combinations of structures can be implemented:

• Fast Ethernet and Gigabit rings with fast media redundancy
• In addition, the SCALANCE XC-200 switches support redundant connection of the ring structure to the corporate network with a rapid spanning tree
• Star topology with XC-200 switches
  Each SCALANCE XC-200 switch represents a star point which can interconnect as many as 8/16/24 nodes or subnetworks.

When configuring the network, the following boundary conditions must be observed:

• Maximum cable length for twisted pair:
  • Max. 100 m with Industrial Ethernet FC cable and Industrial Ethernet FC plugs
  • Max. 10 m using patches with TP cord
• Length of the optical cables:
  • Maximum line length between two modules for multimode fiber-optic conductors:
    – 5 000 m at 100 Mbps
    – 750 m at 1 Gbps
  • Maximum line length between two modules for single-mode FOCs:
    – 200 km at 100 Mbps
    – 120 km at 1 Gbps
• IP address:
  The IP address can be assigned by means of the DHCP (Dynamic Host Configuration Protocol). If there is no corresponding server in the network, the IP address can be assigned using the supplied software tool PST (Primary Setup Tool) or STEP 7.

Redundancy in ring structure in the MRP ring with reconfiguration time < 200 ms

Coupling between HRP rings through standby redundancy

Set-up of distributed access points along track segments with SCALANCE XC206-2SFP

Commissioning and diagnostics

PROFINET diagnostic alarms from SCALANCE XC-200 switches can be displayed with the appropriate SIMATIC engineering tools and processed in the controller with the enhanced diagnostic function. The engineering effort for the PLC and HMI have been drastically reduced due to the complete integration in the SIMATIC concept for system error messages.

SCALANCE XC-200 Industrial Ethernet switches can also be integrated in a network management system such as SINEMA server using the standardized Simple Network Management Protocol (SNMP). If faults occur on the device, error messages (SNMP traps) can be sent to a network management system or as an e-mail to a specified network administrator.

The integrated web server enables configuration and diagnostics settings using a standard browser (e.g. port configuration). Statistical information can also be read out via the web server (e.g. port utilization).

The following information is displayed on site by LEDs:

• Power
• Port status
• Data traffic
• Signaling contact
• Redundancy manager function (RM)

The Industrial Ethernet switches of the SCALANCE XC-200 line can also be monitored using the floating signaling contact.