Kipp&Zonen COMBILOG Data Logger - Manual (Page 90)

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Figure 10.4 Line structure with branches
The RS485 interface permits the simultaneous connection and
operation of a maximum of 32 bus users per bus segment. Fur-
ther bus segments can be constituted via bi-directional repeat-
ers, and thus the number of bus users can be extended to max.
127.
10.3 Transmission Speed and Line Length
The transmission speed with the data logger COMBILOG 1022
can be adjusted between 2,400 baud and 38.4 kbps. The per-
missible line lengths are reduced with increasing transmission
speed. At the given transmission speeds these line lengths are
about 1,200 m (3,900 feet) per bus segment. With 3 repeaters
topologies with a dimension of max. 4.8 km (3 miles) can be
set up.
Hardware Manual COMBILOG 1022 90