Convert from a Non-redundant System
Before you convert from a non-redundant to a redundant system, make sure that your controller firmware revision supports redundancy.
Also consider the following:
- The redundant chassis pair has controller, communication module, and I/O module restrictions.
- The program scan time can increase because of the additional time required for crossloading.
For more information, see Replacement Guidelines: Logix 5000 Controllers Reference Manual, publication 1756-RM100.
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