Siemens X-400 - Manual (Page 28)

System Description of SCALANCE X-400
Operating Instructions for SCALANCE X-400 Industrial Ethernet Switches
28 C79000-G8976-C186-03
Transmission Range
The maximum transmission range (segment length) depends on the module se-
lected and the FOC. The range is as follows:
● 100Base-FX module and multimode GFOC: 3 km
● 100Base-FX-LD module and single mode FOC: 26 km
Connectors
BFOC connectors are used.