Siemens SIMATIC TIWAY 1 Manual de usuario Pagina 25

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Network Design Considerations
2-8
TIWAY 1 TI505 NIM User Manual
2.3.2 Local
Line Cable
The
TIW
AY
I local line network cable consists of a main cable or spine with droplines or
taps
for each Secondary
. Interrelated network variables
having direct influence on net
-
work
performance are:
Maximum trunk cable length
Cable type
T
ap length
T
ap spacing
Number of secondaries
Maximum baud rates
Siemens
recommends Belden
9860 twisted pair cabling, or its equivalent, for use as the
Local
Line
network spine. Belden 9271, or its equivalent, should be used for the dropline.
Brands
other than those listed here will be specified by Siemens on request.
CAUTION
All
local and national electrical codes and fire codes should be observed
when
installing wiring.
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