Wiring
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Figure 4-4 Wiring of the RS485 bus
● Multi-node topology
To connect a large number of nodes, use the daisy chain topology for the RS485 bus. If a branch
cable is needed, keep its length shorter than 3 m and as short as possible. Star connection is strictly
prohibited. The following figure shows the commonly-used bus topologies.
■ Daisy chain
■ Branch line
Note
It is recommended that the distance between the bus and the node do not exceed 3 m.
■ Star connection (prohibited)
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