Mounting and cabling
EL6752 21Version: 2.1
4.5.4 Star Hub (Multiport Tap)
Shorter drop line lengths must be maintained when passive distributors ("multiport taps"), such as the
Beckhoff ZS5052-4500 Distributor Box. The following table indicates the maximum drop line lengths and the
maximum length of the trunk line (without the drop lines):
Guide values
The following values are recommended by BECKHOFF.
Baud rate Drop line length with multiport topology Trunk line length (without drop lines)
500 kbit/s < 1.2 m < 66 m
250 kbit/s < 2.4m < 120m
125 kbit/s < 4.8m < 310m
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