Performance calculations, Compactlogix 5370 controller example – Rockwell Automation Ethernet Design Considerations Reference Manual User Manual
Page 83
Rockwell Automation Publication ENET-RM002C-EN-P - May 2013
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Predict System Performance
Chapter 5
Performance Calculations
Logix5000 controllers use packets per second and the number of connections for
predicting system performance. However, CompactLogix 5370 controllers use
the number of Ethernet nodes to stay within their capacity for the number of
connections.
CompactLogix 5370 Controller Example
As shown in the illustration below, the 1769-L16ER-BB1B controller supports a
maximum of four nodes. Therefore, any additional node, such as a 1734 Ethernet
adapter, cannot be added to our example EtherNet/IP network. Use the
supported node chart on
and the EtherNet/IP Capacity Tool to simplify
calculating system resources for your CompactLogix 5370 network.
The devices you add directly to the local Ethernet node in the I/O configuration
section of your controller project are counted toward the 1769-L16ER-BB1B
controller’s node limitation.
45908
1769-L164ER-BB1B
1756-EN2T
1756 I/O Modules
1794-AENT
1794 I/O Modules
1734-AENT
1734 I/O Modules
PowerFlex Drive
1794-AENTR FLEX I/O Adapter
Stratix Switch