Okuma Alarm-A 1813 2nd spindle condition satisfy
An up/down command was issued when the conditions for moving the second headstock up/down were not met.
A second spindle rotation or axis move command was issued when the second headstock was moving up/down.
1->A second headstock up/down command was issued with the W axis not at the positive side of the variable positive limit.
2->A second headstock up/down command was issued when the second spindle was rotating.
3->A second headstock up/down command was issued when an axis was moving.
4->A second spindle rotation command was issued with the second headstock not at the raised/lowered position.
5->When restart-order was performed, real-position of the second headstock differ from up/down command.
6->A second headstock up command was issued during phase synchronization. Or in phase synchronization, second spindle was not lower position.
MACTURN series + sub-spindle