Rockwell Automation 1734-AENTR EtherNet/IP Network Configuration User Manual - Manual (Page 53)

Rockwell Automation Publication ENET-UM001L-EN-P - March 2014 53
Control I/O Chapter 5
Rack-optimized
connection For digital I/O modules, you can choose rack-optimized communication. A rack-optimized
connection consolidates connection usage between the controller and all the digital I/O modules
in the chassis (or DIN rail). Rather than having individual, direct connections for each I/O module,
there is one connection for the entire chassis (or DIN rail).
IMPORTANT If you use different 1756 EtherNet/IP communication modules in a remote
chassis, such as a 1756-ENBT module and a 1756-EN2T module, do not use
a rack-optimized communication format to the remote chassis.
If you must use a rack-optimized communication format with a remote
1756 chassis, install the 1756-ENBT and 1756-EN2T modules in a separate
remote chassis.
Term Definition
Rack-optimized
connection