Rockwell Automation 1756-L6x_L7x ControlLogix System User Manual - Manual (Page 70)

70 Rockwell Automation Publication 1756-UM001O-EN-P - October 2014
Chapter 3 Start Using the Controller
Other Memory Card Tasks
Other tasks that you can complete by using the memory cards of the controller
include the following:
• Change the image that is loaded from the card
• Check for a load that was completed
• Clear an image from the memory card
• Store an empty image
• Change load parameters
• Read/write application data to the card
For more information to complete any of these tasks, see the Logix5000
Controllers Memory Card Programming Manual, publication
1756-PM017 .
Use ControlLogix Energy
Storage Modules (ESMs) You can use the ControlLogix ESMs to execute one of the following tasks:
• Provide power to 1756-L7 x controllers to save the program to the on-
board nonvolatile storage (NVS) memory of the controller after power is
removed from the chassis or the controller is removed from a powered
chassis.
.
• Clear the program from the on-board NVS memory of the 1756-L7x
controller. For more information, see
Clear the Program from On-board
NVS Memory .
The following table describes the ESMs.
IMPORTANT Allow the load to complete without interruption. If you interrupt the
load, data corruption or loss can occur.
IMPORTANT When you are using an ESM to save the program to on-board NVS
memory, you are not saving the program to the SD card installed in the
controller.
Cat. No. Description
1756-ESMCAP Capacitor-based ESM
The 1756-L7x controllers come with this ESM installed.
1756-ESMNSE Capacitor-based ESM without WallClockTime back-up power
Use this ESM if your application requires that the installed ESM deplete its residual stored energy
to 40
μjoules or less before transporting it into or out of your application. Additionally, you can
use this ESM with only a 1756-L73 (8 MB) or smaller memory-sized controller.
1756-ESMNRM Secure capacitor-based ESM (non-removable)
This ESM provides your application an enhanced degree of security by blocking physical access to
the USB connector and the SD card.