Allen-Bradley 1756-EN2T - Module Replacement Guidelines

18 ControlLogix EtherNet/IP Module
Rockwell Automation Publication 1756-IN603C-EN-P - April 2010
2. Slide the module out of the chassis.
IMPORTANT
If you want to replace an existing module with an identical one, and you
want to resume identical system operation, you must install the new
module in the same slot.