Rockwell Automation Publication 1756-RM100F-EN-P - October 2018 59
Replacement Considerations with CompactLogix and Compact GuardLogix Systems Chapter 3
Nodes on an EtherNet/IP Network
When used in a Logix Designer application project, 5380 and 5370 controllers
offer a simplified method for counting controller resources.
When you configure a 5380 control system, you simply count the number of
Ethernet nodes that you include in the I/O configuration section of your Logix
Designer application project.
On the Controller Properties dialog box, the Logix Designer application
project displays the updated number of nodes that are used as you add Ethernet
nodes to the project.
To see an example of how the project displays the node count, see Figure 12 on
page 65.
For the EtherNet/IP node limits for 5380 and 5370 controllers, see:
• CompactLogix Controllers Product Comparison on page 47
• Compact GuardLogix Controllers Product Comparison on page 49
Devices Included in the Node Count
Any devices that you add directly to the I/O configuration section are counted
toward the node limits of the controller. The following are example devices
that must be counted:
• Remote communication adapters
• Devices with an embedded EtherNet/IP port, such as I/O modules,
drives, and linking devices
• Remote controllers when a produce/consume connection is established
between the two controllers
• HMI devices that are included in the I/O configuration tree
• Third-party devices that are directly connected to the EtherNet/IP
network
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
• HMI that is not added to the I/O configuration section
•MSG instruction
• Standard Ethernet devices for which the controller uses a socket
interface to communicate
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