Siemens 6GK5204-2BB10-2AA3 SCALANCE X204-2 Managed Switch

The Siemens 6GK5204-2BB10-2AA3 is a SCALANCE X204-2 managed industrial Ethernet switch. It features four 10/100 Mbit/s RJ45 ports and two 100 Mbit/s fiber optic ports (BFOC) for long-distance communication. Designed for harsh environments, this switch supports PROFINET and industrial protocols with high reliability.

Port Configuration

• 4 x 10/100BASE-TX RJ45 ports with auto-negotiation and auto-crossing.

• 2 x 100BASE-FX fiber optic ports (multimode, BFOC connectors, up to 5 km range).

• Integrated redundant power supply inputs (24 VDC).

• Relay output for signaling errors.

Management and Redundancy

Full network management via web interface, SNMP v1/v2/v3, or command line (SSH). Supports IEEE 802.1D Spanning Tree (STP), Rapid Spanning Tree (RSTP), and MRP (Media Redundancy Protocol) for ring topologies with reconfiguration time < 200 ms. VLAN (802.1Q), IGMP snooping, port mirroring, and port-based access control are also available.

PROFINET Features

The switch is fully PROFINET Conformance Class B certified. It acts as an IO device for diagnostic purposes, allowing integration into STEP 7 or TIA Portal projects. Features include LLDP (Link Layer Discovery Protocol) for topology discovery, DCP (Discovery and Configuration Protocol), and SNMP traps for alarms.

Environmental Ratings

Operating temperature: -40°C to +70°C (with fanless convection cooling). Storage temperature: -40°C to +85°C. Relative humidity: 5% to 95% non-condensing. Enclosure rating IP30 (metal housing). Shock: 15 g, 11 ms. Vibration: 2 g (5-100 Hz). Conformal coating on PCBs for protection against condensation.

Power and Consumption

Supply voltage: 24 VDC (19.2 to 28.8 V). Power consumption typical: 3.6 W (without fiber), 4.5 W with both fiber ports active. Overload and reverse polarity protection. Terminal block with redundant power feed (L1/L2).

Dimensions and Mounting

Dimensions: 60 mm x 125 mm x 124 mm (W x H x D). Weight: 0.8 kg. Mounting on 35 mm DIN rail. Front LEDs for power, link/activity, and fault status. The compact metal housing provides effective heat dissipation.

Diagnostic Capabilities

The switch includes a signal contact (relay) that opens upon power failure or link loss on any port. Network administrators can use the embedded web server to view statistics, port errors, and event logs. For remote management, the switch supports SMTP for email alerts and syslog.

Standards and Certifications

CE, UL 60950-1, CSA C22.2, ATEX Zone 2, IECEx, cULus Haz Loc, DNV GL (marine), EN 50155 (railways, with limited temperature). RoHS and WEEE compliant. Shipping includes documentation and terminal block.