Siemens CP 243-2 Instrukcje Operacyjne Pobierz pdf (Strona 17)

A total cable length of up to 500 m with standard components:

two lines with a star network topology run in opposite directions

from the centrally located master each to a repeater. The maximum

permissible cable length between the master and all repeaters is

100 m, so that if 2 extenders are used a distance of 50 m can be

covered. After each repeater, a new segment begins, each with a

cable length of 100 m. With further repeaters the network can

again be expanded by 100 m on both sides. This results in a total

length of 500 m for one AS-Interface network.

Power

supply

unit

Slave Power

supply

unit

Slave

Repeater Repeater

Segment

max. 100 m

Segment

max. 100 m

… extenders

The AS-Interface cable can also be

lengthened by 100 m using extenders,

in which case no slaves must be used

in the first segment. Extenders are only

recommended for covering large dis-

tances, say, between the control cabi-

net and the plant.

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Siemens CP 243-2 Instrukcje Operacyjne Strona 17