Install Or Remove The Module Under Power - Allen-Bradley 1756-EN2T Installation Instructions Manual

The alphanumeric display should cycle through these states:
• TEST
• PASS
• OK
• REV x.x
where x.x is the module's firmware revision.
The display then alternates between OK and the module's EtherNet/IP address.

Install or Remove the Module Under Power

You can install or remove this module while chassis power is applied.
WARNING: When you insert or remove the module while
backplane power is on, an electrical arc can occur. This could
cause an explosion in hazardous location installations. Be sure
that power is removed or the area is nonhazardous before
proceeding. Repeated electrical arcing causes excessive wear to
contacts on both the module and its mating connector. Worn
contacts may create electrical resistance that can affect module
operation.
1. Push on upper and lower module tabs to disengage them.
Rockwell Automation Publication 1756-IN603C-EN-P - April 2010
ControlLogix EtherNet/IP Module 17