Eaton XV300 Series - Topology; Figure 29: Bus Segment with Four Nodes

5. External connections
5.5 Serial interfaces for communication with PLCs or devices
5.5.2.2 RS-485 topology
l A bus segment can interconnect up to 32 slaves.
l Several bus segments can be connected using repeaters (bi-directional amplifiers).
The use of repeaters enables the maximum cable length to be
increased.
For more details, please consult the documentation provided by man-
ufacturer.
A bus segment must be provided with cable termination (120 Ohm) at both ends.
These terminals must be connected in the plug directly between pin 3 and 7.
Thebussegmentmustbeterminatedatbothends.
Nomorethantwoterminationsmustbeprovidedforeachbussegment.
Operationwithoutcorrectcableterminationcancausetransfererrors.

Figure 29: Bus segment with four nodes
54
XV30012/15 MN048017 ENwww.eaton.eu