Maslow has apparently lost its calibration

I inadvertently bumped the USB plug from my PC while Maslow was running and it seems to have lost its wits. Do I need to recalibrate or is there a trick to bring it back?

you can avoid going through the entire calibration routine by setting the
sprockets to 12 o’clock and then putting the right link on the sprocket.

During calibaration, if you let it feed out the chains (1651mm by default,
configured in the settings) you can then mark those links so that you can easily
find them.

David Lang