178 Rockwell Automation Publication 1756-UM535D-EN-P - November 2012
Chapter 7 Program the Redundant Controller
Store a Redundancy Project
to Nonvolatile Memory
Use this procedure to store an updated project and firmware to the nonvolatile
memory card of the controller.
This section describes how to store a project to nonvolatile memory in either of
these conditions:
• Store a Project While the Controller is in Program or Remote Program
Mode
• Store a Project While a System is Running
The controllers use these nonvolatile memory cards.
We recommend that you store the same project on both controllers’
nonvolatile memory cards. By doing so, you can be assured that if a controller,
primary or secondary, loses the project from its internal memory, you can load
the most recent project back onto that controller.
If you store the same project on both controllers’ nonvolatile memory cards,
while the process is running, you must save the project on the controllers while
they are in the secondary controller state. To do so, you save the project on the
secondary controller, conduct a switchover and save the project on the new
secondary controller.
For more information, see the steps below.
Cat. No. Nonvolatile Memory Card
1756-L6x 1784-CF64 or 1784-CF128 CompactFlash cards
1756-L7x 1784-SD1 or 1784-SD2 Secure Digital cards
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