Rockwell Automation Publication 1756-UM001M-EN-P - February 2012 73
Start Using the Controller Chapter 3
Save the Program to On-board NVS Memory
Follow these steps to save the program to NVS memory when the controller loses
power.
1. Remove power from the controller.
You can remove power in either of two ways:
• Turn power off to the chassis while the controller is installed in the
chassis.
• Remove the controller from a powered chassis.
Immediately after the controller is no longer powered, the program starts
saving while the OK status indicator is green (this green is a dimmer green
than normal operation), then turns red after program save is complete.
Once the ESM stops operating, it turns off.
The following graphic shows the controller’s OK status indicator.
2. Leave the ESM on the controller until the OK status indicator is OFF.
3. If necessary, remove the ESM from the controller after the OK status
indicator transitions from Solid Red to Off.
OKFORCE SDRUN
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