Devices included in the Ethernet node count

Any Ethernet/IP device that is added directly to the I/O configuration is counted towards the node limits of the controller.
CompactLogix
controllers count devices that are connected only to the local Ethernet port.
ControlLogix
controllers count all devices connected to local as well as remote Ethernet ports.
The following are example devices that are counted as Ethernet nodes when added to the I/O Configuration tree:
  • Remote communication adapter
  • I/O modules connected to the EtherNet/IP network
  • Motion devices, such as drives
  • Remote controllers
  • HMI devices that are included in the I/O Configuration tree, for example, PanelView Plus terminals
  • Linking devices, such as the 1788-EN2DNR
  • Third-party devices that are directly connected to the EtherNet/IP network
The local Ethernet modules and embedded Ethernet ports are not included in the count.
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