Rockwell Automation AADvance Controller Solutions Handbook - Manual (Page 97)

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Document: 553631
(ICSTT-RM447J_EN_P) Issue: 09:
7-3
If a controller uses two or three processor modules, and one processor module
develops a fault, plant maintenance personnel can fit a new processor module while the
controller is on-line. The new processor module automatically carries out self-
education and synchronizes with the other processors. Fault detection and fail-over in
redundant processor configurations is automatic and has no impact on controller
operation.