Scalance X101-1Fl Fo Port - Siemens SCALANCE X101-1 Commissioning Manual

Product Characteristics
4.3 SCALANCE X101-1FL
MDI /MDIX Autocrossover Function
The advantage of the MDI /MDIX autocrossover function is that straight-through cables can
be used throughout and crossover Ethernet cables are unnecessary. This prevents
malfunctions resulting from mismatching send and receive wires. This makes installation
much easier for the user.
All media converters of the SCALANCE X-100 series support the MDI / MDIX autocrossover
function.
Note
Autopolarity is not support by the SCALANCE X101-1FL.
4.3.5

SCALANCE X101-1FL FO Port

Transmission Speed
The transmission rate of the optical Ethernet port is 10 Mbps.
Note
The SCALANCE X101-1FL works with a fixed transmission speed of 10 Mbps in half duplex.
Transmission Mode
The transmission mode for 10Base-FL is specified in the IEEE 802.3 standard.
Since the half duplex mode and the transmission rate cannot be modified for optical
transmission, autonegotiation cannot be applied.
Transmission Medium
The data are transferred over multimode fiber-optic cable (FOC). The transceiver wavelength
is 820 nm.
Multimode fiber-optic cables are used with a core diameter of 50 or 62.5 µm, the light source
is an LED.
The outer diameter of the FOC is 125 µm.
Range
The maximum transmission range (segment length) is 3 km if the signal attenuation of the
FOC is ≤ 3 dB/km at 850 nm.
Industrial Ethernet Media Converters SCALANCE X-100 Series
Commissioning Manual, 07/2008, A2B00051521A
4-17