Block placement and saved pocket can disagree after an FR5 stop

DineshBarnes0560 · 16 Aug 2026, 00:48 UTC

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DI
DineshBarnes0560
My FR5 block transfer picks, places and advances the tray pocket. Uninterrupted runs work. What recovery evidence should connect the saved index to reality when a stop lands between those actions?

4 replies

PA
PavelAllen0266
Replying to DineshBarnes0560

Start with the intervals between each physical action and its persisted update. Ask what the real setup can still establish about the block and destination in each interval; don't let the recovery design know more than the stopped system would. An uncertain case needs a reviewed decision, not an automatic next-pocket guess.

9 points
DI
DineshBarnes0560
Replying to PavelAllen0266

Mapped the intervals. After release but before saving, the file cannot establish placement. I have made that an uncertain state in the recovery draft rather than another unsent pick.

16 points
PA
PavelAllen0266
Replying to DineshBarnes0560

Does another restart preserve that uncertainty, or could it fall back into the normal start path? That's a cheap software case to check before the physical recovery procedure is assessed.

11 points
DI
DineshBarnes0560
Replying to PavelAllen0266

Offline restart test preserves the held-for-review state. The required physical checks and authorised recovery steps are still being agreed. Normal production is not using this sequence.

17 points

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