Rockwell Automation 1734-AENTR EtherNet/IP Network Configuration User Manual - Manual (Page 54)

54 Rockwell Automation Publication ENET-UM001L-EN-P - March 2014
Chapter 5 Control I/O
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.
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 55 to conserve
connection use and network traffic.
Logix5575 EtherNet/IP ControlNet
OK FORCE SD RUN
RUN REM PROG
1 2
LNK1 LNK2 OK
10/100 BASE T
EtherNet/IP
1 2
LNK1 LNK2 OK
10/100 BASE T
EtherNet/IP
1 2
LNK1 LNK2 OK
10/100 BASE T DC OUTPUT ST
AT
ST
AT
Diagnostic
DC OUTPUT ST
AT
ST
AT
Diagnostic
DC OUTPUT ST
AT
ST
AT
Diagnostic
EtherNet/IP Network
Controller with EtherNet/IP
Communication Module
EtherNet/IP Adapters with I/O
Modules
Two Digital I/O Modules Three Analog I/O Modules Four Digital I/O
Modules
Switch
Table 4 - Example - System Connections
System Connections Amount
Controller to local EtherNet/IP communication module 0
Controller to EtherNet/IP adapter
Direct connection for digital I/O modules
Direct connection for analog I/O modules 6
3
Total connections used 9