Rockwell Automation 1756-CN2_CN2R, Series B ControlLogix ControlNet Interface Module - Manual (Page 18)

18 ControlLogix ControlNet Interface Module
Publication 1756-IN607A-EN-P - February 2008
Remove the Module
To remove the module, perform this procedure.
1. Push on the upper and lower tabs to disengage them.
2. Slide the module out of the chassis.
Upper Tab
If you are replacing an existing module with an identical one, and
you want to resume identical system operation, you must install the
new module with the same ControlNet address in the same slot.
Install or Remove the Module Under Power
You can install or remove the module while chassis power is applied
if you take these precautions.
IMPORTANT
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.