Rockwell Automation 1768-CNBR CompactLogix ControlNet Communication Module Installation Instructions - Manual (Page 23)

CompactLogix ControlNet Interface Module 23
Publication 1768-IN006A-EN-P - September 2007
Wait for the Lights to Turn Off Before Removing a Module
After you turn off the power, wait for all of the lights on the power supply and
controller to turn off before you disconnect any modules.
• When you turn off the power, the controller writes its program to
memory.
• If you don’t wait for the lights to turn off, you will lose your program.
IMPORTANT
When you turn the CompactLogix power supply off, make sure you
wait for all status indicators on the power supply and controller to
turn off before disconnecting any part from the system.
If you disconnect the CompactLogix system while the controller is
still writing its program to memory, the program write will not be
completed and you will lose your program.