Product Model
FL SWITCH LM 4TX/2FX ST

Selling Points
- 1Compact Design: The switch is housed in a compact, DIN rail mountable enclosure.
- 2Flexible Connectivity: Features four RJ45 ports for copper connections and two FX ports for fiber optic connections.
- 3Extended Temperature Range: Operates in temperatures from -40°C to +70°C, making it suitable for industrial applications.
- 4Robust Management Features: Supports SNMP management, VLAN, multicast filtering, and IGMP snooping for efficient network management.
- 5Redundancy Capabilities: Includes Rapid Spanning Tree (IEEE 802.1w) and Fast Ring Detection for redundancy in network setup.
Technical Specifications
Detailed engineering parameters based on manufacturer documentation
Parameter | Value | Parameter | Value |
---|---|---|---|
Width | 45 mm | Height | 99 mm |
Depth | 112 mm | Mounting type | DIN rail mounting |
Connection method | RJ45 | Note on the connection method | Auto negotiation and autocrossing |
Transmission speed | 10/100 Mbps | Transmission physics | Copper |
Transmission length | 100 m (per segment) | No. of channels | 4 (RJ45 ports) |
Connection method | ST | Transmission speed | 100 Mbps (full duplex) |
Transmission physics | multi-mode fiberglass | Transmission length | 8000 m (fiberglass with F-G 62.5/125 0.7 dB/km F1000)
6400 m (fiberglass with F-G 50/125 0.7 dB/km F1200)
3000 m (fiberglass with F-G 62.5/125 2.6 dB/km F600)
2800 m (fiberglass with F-G 50/125 1.6 dB/km F800) |
Wavelength | 1300 nm | No. of channels | 2 (ST multi-mode) |
Connection method | RS-232-C, 6-pos. MINI-DIN socket (PS/2) | Product type | Switch |
Product family | Lean Managed Switch | Type | Block design |
Protection class | III (IEC 61140, EN 61140, VDE 0140-1) | Diagnostic functions | 1:1-Portmirroring |
Basic functions | Store-and-forward switch complies with IEEE 802.3, 2 priority classes according to IEEE 802.1p, TCP/IP protocol, BootP-compatible, port mirroring, integrated web server function, multicast filtering, IGMP snooping, VLAN, Rapid Spanning Tree (RSTP), DHCP server, PTCP filter | PROFINET conformance class | Conformance-Class A |
Filter functions | Quality of Service
VLAN (up to 8 VLANs)
IGMP Query
Auto-Query-Port
Extended Multicast Filtering | Management | Web-based management (HTTP)
SNMP v1/v2
Serial interface (V.24) |
Redundancy | STP (Spanning Tree Protocol)
RSTP (Rapid Spanning Tree Protocol)
FRD (Fast Ring Detection)
Large Tree Support | Status and diagnostic indicators | LEDs: US1, US2 (power supply), Fail (alarm contact), 2 LEDs per Ethernet port (Link/Activity and Speed) |
Supported browsers | Internet Explorer 5.5 or higher | Basic functions | Store-and-forward switch complies with IEEE 802.3, 2 priority classes according to IEEE 802.1p, TCP/IP protocol, BootP-compatible, port mirroring, integrated web server function, multicast filtering, IGMP snooping, VLAN, Rapid Spanning Tree (RSTP), DHCP server, PTCP filter |
Local diagnostics | US Supply voltage Green LED
LINK Link status Green LED
Telegrams received Yellow LED | Maximum power dissipation for nominal condition | 6 W |
Transmission medium | Copper
FO | Supply voltage (DC) | 24 V DC (redundant) |
Supply voltage range | 18.5 V DC ... 30.5 V DC | Power supply connection | Via COMBICON, max. conductor cross section 2.5 mm² |
Residual ripple | 3.6 V | Typical current consumption | 250 mA (at U |
Connection method | Screw connection | Conductor cross section, rigid | 0.2 mm² ... 2.5 mm² |
Conductor cross section, flexible | 0.2 mm² ... 2.5 mm² | Conductor cross section AWG | 24 ... 12 |
Stripping length | 7 mm | Degree of protection | IP20 |
Ambient temperature (operation) | -40 °C ... 70 °C | Ambient temperature (storage/transport) | -40 °C ... 85 °C |
Permissible humidity (operation) | 30 % ... 95 % (non-condensing) | Permissible humidity (storage/transport) | 30 % ... 95 % (non-condensing) |
Vibration (operation) | in acc. with IEC 60068-2-6: 5g, 150 Hz | Air pressure (operation) | 80 kPa ... 108 kPa (2000 m above mean sea level) |
Air pressure (storage/transport) | 70 kPa ... 108 kPa (3000 m above sea level) | Electromagnetic compatibility | Conformance with EMC Directive 2014/30/EU |
Conformance with EMC directives | IEC 61000-6-2 IEC 61000-4-2 (ESD) Criterion B
IEC 61000-4-3 (immunity to radiated interference) Criterion A
IEC 61000-4-4 (burst) Criterion B
IEC 61000-4-5 (surge) Criterion B
IEC 61000-4-6 (immunity to conducted interference) Criterion A | Noise immunity | EN 61000-6-2:2005 |
Noise emission | EN 61000-6-3/-4 | Basic functions | Store-and-forward switch complies with IEEE 802.3, 2 priority classes according to IEEE 802.1p, TCP/IP protocol, BootP-compatible, port mirroring, integrated web server function, multicast filtering, IGMP snooping, VLAN, Rapid Spanning Tree (RSTP), DHCP server, PTCP filter |
Supported browsers | Internet Explorer 5.5 or higher | Status display | LEDs: US1, US2 (power supply), Fail (alarm contact), 2 LEDs per Ethernet port (Link/Activity and Speed) |
Specifications may be subject to change without notice