Siemens SIMATIC TI500 Manual de usuario descargar pdf (Pagina 26)

Network Installation

2-10

TIWAY I Gateway User Manual

Network Media Installation — Local Line (continued)

Cable

routing should be planned as if the path between all stations on the

network were free of obstructions. The next step is to modify the first

routing to account for obstructions, then calculate the amount of cable

needed.

Observe

all local and national electrical and fire codes when

installing wiring.

general, there are three types of network cabling routes:

• Under-floor

• In-ceiling

•

Surface ducting

Any combination of these three routes may be used on a single network. The

choice is often determined by whether or not the building (or buildings) in

which the network is being installed is new construction or an existing

building. The following paragraphs describe some of the advantages and

disadvantages of each type of cable routing.

Under-floor

— For under

-floor routing, the cable can be enclosed within

ducts or

, with raised flooring, in the “open air

.” Under

-floor systems enclosed

in ducts are usually expensive, and while they are better

-protected against

unauthorized taps than are open-air systems, they often make future

expansion of the network more difficult and expensive.

Open-air under

-floor cabling systems usually provide good access, and allow

maximum network expansion and flexibility

In-ceiling

— For in-ceiling routing, network cables are usually supported

in troughs or with hooks and clamps every 10 or 15 feet. Some advantages

of in-ceiling installation are the following.

• Flexibility

•

Low-cost installation

•

Accessibility to cabling

Cable Routing

CAUTION

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Siemens SIMATIC TI500 Manual de usuario Pagina 26

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