Node
There are two types of node: master and slave. The master controls a network and gathers data from its slaves. The slaves, including external I/O and other devices, output data in response to the master’s output order and informs the master of its input status.
You can install the master anywhere in the network. One master node can control up to 127 nodes.
Universal Ethernet cable is used for EtherNet/IP. Use a proper cable such as environmental resistance and refraction resistance that fulfills the environment.
For details, see the website of ODVA.