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V2 AC500 Hardware 1-45 System data AC500 / Issued: 05.2007
Typical Field Bus Topologies
Party Line
Trunc
Drop
Party Line with branch and drop
Ring
The PROFIBUS DP realized with PDP21
or PDP22 represents a real Party Line
topology that supports high baud rates
up to 12 Mbit/s best possible.
Branches and Drops cause reflexions
which results in a dramatic reduction of
themax.baudrate.
With repeaters, this influence can be
equalized partially.
Branch
Figure: Typical field bus topologies
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