# Bus Topology

In an RS485 setup without a repeater, a single trunk cable runs through the system, with devices connected in a daisy-chain manner. Short cables derivations (stubs) are also allowed but not recommended. Keep the derivation distance as short as possible. Other topologies are not allowed.

<figure><img src="/files/fU6gIkYsGzht45ni7HFD" alt=""><figcaption><p>IS4310 RS485 Bus Topology</p></figcaption></figure>


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