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The official six-page product information distinguishes replacement settings for 8AA, 8CC, 8DD and 8DE executions. Redundant operation requires two identical modules with matching software versions, so the installed variant context must be captured before exchange.
Important Notice: record the replaced 6DS1411 execution, user-specific jumper settings, software version and redundant-pair identity before removal.
The documents separate exact product evidence from the field sequence for identity, isolation, installation, verification and controlled handover.