https://www.phoenixcontact.com/pi/products/2891916

08/14/2018   Page 2 / 5

Industrial Ethernet Switch - FL SWITCH LM 4TX/2FX SM - 2891916

Technical data

Ambient conditions

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)

Air pressure (operation)

80 kPa ... 108 kPa (2000 m above sea level)

Air pressure (storage/transport)

70 kPa ... 108 kPa (3000 m above sea level)

Interfaces

Interface 1

Ethernet (RJ45)

No. of ports

4 (RJ45 ports)

Note on the connection method

Auto negotiation and autocrossing

Transmission physics

Copper

Transmission speed

10/100 Mbps

Transmission length

100 m (per segment)

Interface 2

Ethernet FO

No. of ports

2 (SC single mode)

Transmission physics

Single-mode fiberglass

Transmission speed

100 Mbps (full duplex)

Transmission length

36000 m (fiberglass with F-G 9/125 0.36 dB/km)

32000 m (fiberglass with F-G 9/125 0.4 dB/km)

26000 m (fiberglass with F-G 9/125 0.5 dB/km)

Wavelength

1300 nm

Interface 5

Serial (RS-232)

Connection method

RS-232-C, 6-pos. MINI-DIN socket (PS/2)

Function

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

Management

Web-based management (HTTP)

SNMP v1/v2

Serial interface (V.24)

Diagnostic functions

1:1-Portmirroring

Filter functions

Quality of Service

VLAN (up to 8 VLANs)

IGMP Query

Auto-Query-Port

Extended Multicast Filtering

Supported browsers

Internet Explorer 5.5 or higher

Redundancy

STP (Spanning Tree Protocol)