Allen-Bradley 1756-CNB/E, User Manual

Page: 128 / 186

Publication 1756-UM523F-EN-P - December 2006
128 Maintain and Troubleshoot the System
Store a Project to
Nonvolatile Memory While
a Process Is Running
To store an updated project and firmware to the nonvolatile memory
of a 1756-L61, 1756-L62 or 1756-L63 controller while the process is
running, perform this procedure.
IMPORTANT
Use this procedure only with a 1756-L61, 1756-L62 or 1756-L63
controller. Do not use the nonvolatile memory of a
1756-L55M2
x controller if you have updated it to revision 15.56.
If nonvolatile memory is used to store a project with a
1756-L55M2
x controller, use revision 15.57 or later. Otherwise
the controller will have an unrecoverable fault (solid red OK
light) and clear the project from its memory.
Action Details
1. Make sure the chassis are synchronized. Synchronize the chassis if they are not already synchronized.
2. Disqualify the secondary chassis. A. Open the SRM configuration tool for the primary chassis.
B. Set the Auto-Synchronization option to Never.
C. Disqualify the secondary chassis.
3. Store the secondary controller’s project. A. Go online to the secondary controller
B. Store the project to the nonvolatile memory of the secondary controller.
For step-by-step procedures on how to store a project, see Logix5000 Controllers
Common Procedures, publication 1756-PM001.
Important : Do not go back online to the secondary controller until you complete the
rest of the steps in this procedure.
4. Initiate a switchover. A. Go to the SRM configuration tool.
B. Synchronize the chassis.
C. Initiate a switchover.
5. Store the new secondary controller’s
project.
A. Go online to the new secondary controller
B. Store the project to the nonvolatile memory of the secondary controller.
For step-by-step procedures on how to store a project, see Logix5000 Controllers
Common Procedures, publication 1756-PM001.
Important : Do not go back online to the secondary controller until you complete this
procedure.
6. Synchronize the chassis. A. Go to the SRM configuration tool.
B. Set the Auto-Synchronization option to the desired option.
C. Synchronize the chassis.