Siemens SIMATIC NET Instrucciones de operaciones Pagina 170

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Guidelines for Installing Networked Automation Systems in Buildings
7-22
SIMATIC NET Twisted-Pair and Fiber-Optic Networks
C79000-G8976-C125-02
7.4.5 Cabling outside Buildings
Using Fiber-Optic Cables
Industrial Twisted Pair is intended for use within buildings (tertiary area). The
installation of Industrial Twisted Pair cables between buildings in not permitted.
LAN connections between buildings and between buildings and external facilities
are only possible with fiber-optic cables (FO). Due to the optical transmission
principle, fiber-optic cables are not affected by electromagnetic interference.
Measures for equipotential bonding and overvoltage protection are unnecessary
with fiber-optic cables.
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