Sampling rate has been given many times as 1Hz. Read through both the FDR group's report (#1) and minimally-processed FDR data (#2) on a previous GEnx/787 engine issue:
https://data.ntsb.gov/Docket?ProjectID=84481
If the switches are cutoff, the FADEC does not attempt to start the engine.
If the switches are moved back on, the FADECs do anything they can to recover the engine, except use the actual starter motors (unless the start switch is moved too).
The starter motors wouldn't have been available in this case as no ground power, APU, or second engine for cross-start.
Originally Posted by
EXDAC
In every system I worked on "Disagree" meant that a command had been issued but the commanded system had not (yet) assumed the commanded state.
That is very different from "Miscompare" which is when two independent systems provide different data for a system state or parameter when both independent systems would normally provide the same information.
"IAS Disagree" seems to be far closer to the latter?