Rockwell Automation Allen-Bradley 1794-IB16D - Page 87

Rockwell Automation Publication 1794-UM061B-EN-P - March 2020 87
Configure your Digital Module on an EtherNet/IP Network Chapter 7
Direct Connections For I/O Modules
In this example, assume that each distributed I/O module is configured for a
direct connection to the controller.
The following table calculates the connections in this example.
If you have many modules, direct connections to each module may not be feasible
because you could use up the number of connections and packets per second
supported by the module.
See Rack-optimized Connections For I/O Modules on page 86 to conserve
connection use and network traffic.
EtherNet/IP Network
Controller With EtherNet/IP
Communication Module
EtherNet/IP Adapters
With I/O Modules
Digital I/O Modules Analog I/O Modules Digital I/O Modules
Switch
System Connections Amount
Controller to local EtherNet/IP communication module 0
Controller to EtherNet/IP adapter
Direct connection for digital I/O module
Direct connection for analog I/O module
4
2
Total connections used 6