Specifications

Description
3.3 System description of SCALANCE X-400
SCALANCE X-400 BA
30 Operating Instructions, 03/2009, C79000-G8976-C186-07
Transmission range
The maximum transmission range (segment length) depends on the module selected and
the FOC. The range is as follows:
● 100Base-FX module and multimode FOC: 3 km
● 100Base-FX-LD module and single mode FOC: 26 km
● 100Base-FX-LH/ LH+ module and single mode FOC: 70 km
Connectors
The connectors used are BFOC sockets or SC duplex sockets with the 100BaseFX LH/ LH+
module.
3.3.2.4 1000Base-SX
Transmission rate
The transmission rate of the optical gigabit ports is 1 Gbps.
Transmission mode
Transmission with 1000Base-SX is defined in the IEEE 802.3z standard and is specified as
1000 Mbps transmission rate and full duplex.
Transmission medium
Data is transmitted over multimode FOC. The wavelength is 850 nm.
The core diameter of the multimode FOC is 50 µm; the light source is an LED. Many modes
are used for signal transmission. The propagation times of the light pulses (dispersion)
restrict the maximum range considerably.
Transmission range
The maximum transmission range (segment length) is 750 m when using SIMATIC NET
fiber-optic multimode FOC with SC duplex connectors.
Connectors
SC duplex female connectors are used.
3.3.2.5 1000Base-LX
Transmission rate
The transmission rate of the optical gigabit ports is 1 Gbps.