Network Structure; Figure 8: Traditional Tp1 Network - WAGO 750 Series Manual

28 Function Description
4.2

Network Structure

In a conventional two-wire TP1 network (see Figure below) a distinction is made
between backbone, ranges and lines. Up to 15 ranges can be coupled at a KNX
backbone using range couplers. Each of these ranges, in turn, is broken down
into a maximum of 15 lines that are connected to the range line via line couplers.
Lines can consist of up to 64 devices (see Konnex standard 3/1/1).

Figure 8: Traditional TP1 Network

As the volume of data traffic on the KNX backbone (range line) can be extremely
high – and because the maximum data transmission rate of twisted pair cables is
9.600 baud – it is important to "flatten out" (broaden) the network topology and
replace the KNX backbone with an IP backbone. This process allows for
considerably higher data transmission rates.
Manual
Version 1.1.0
753-646 KNX/EIB/TP1 Module