Terminating Resistor

To reduce reflections of communication signal, terminating resistors should be attached on both ends of the trunk line. For DeviceNet, nodes have no terminating resistor on the ends.

Attach 121 Ω± 1%, 1/4W terminating resistors between the signal wires (CAN-H and CAN-L) of the trunk line cable.

Some commercially available T-branch taps and connectors can accept terminating resistors. Molded terminating resistors with connectors are also available to attach to environment-resistant T-branch taps and connectors.