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Can Bus:

• Twisted Pair with

...

• a 120 Ohm resistor to

...

• terminate. It stabilizes the voltage and lessens external noise.

DeviceNet:

• Has a set standard, three types of cables: Thick Round Cable, Thin Round Cable and Flat Cable
• There is standard for how long each branch from the main cable can be and how long they can be combined, this is drop length and cumulative drop length
• Connectors used are screw, mini and micro connector

Source: https://www.odva.org/wp-content/uploads/2021/05/PUB00026R5_Tech-Series-DeviceNet.pdf lessen external noice.