118 Rockwell Automation Publication 5069-UM002A-EN-P - January 2019
Chapter 5 EtherNet/IP Network
Nodes on an EtherNet/IP
Network
When you configure your CompactLogix 5480 controller system, you must
account for the number of EtherNet/IP nodes that you include in the I/O
configuration section of your project.
The CompactLogix 5480 controller supports as many as 250 EtherNet/IP
nodes.
Devices Included in the Node Count
Any EtherNet/IP devices that you add to the I/O configuration section are
counted toward the controller node limit. The following are examples of
devices that must be counted:
• Remote communication adapters
• Switches that are included in the I/O configuration section
• Devices with an embedded Ethernet port, such as drives, I/O modules,
and linking devices
• Remote controllers when a produce/consume connection is established
between the two controllers
• HMI and third-party devices that are included in the I/O configuration
section
Devices Excluded from the Node Count
When you calculate the EtherNet/IP node limitation of a controller, do not
count devices that exist on the EtherNet/IP network but are not added to the
I/O configuration section.
The following devices are not added to the I/O configuration section and are
not counted among the number of nodes:
• Computer
• HMIs that are not added to the I/O configuration section
• Devices that are the target of MSG Instructions but were not added to
the I/O configuration section
• Standard Ethernet devices with which the controller communicates via a
socket interface
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