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What cable to use for a Modbus RTU network?

Modbus RTU – how to interconnect Sentera devices

advises to use Shielded Twisted Pair (STP) or Unshielded Twisted Pair (UTP) cable to connect Sentera devices via Modbus RTU.
The wires should have the following characteristics:
- Characteristic impedance: 120 Ω ±10%
- Specific resistance depending on network length
 Cable for Modbus RTU network
Modbus RTU has a line topology - the Modbus RTU should be connected from device to device and branches should be minimized.

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