If Digital I/O bank synchro is checked, the AS-Interface cycles and CPU cycles are synchronized. In default case Digital I/O bank synchro is unchecked.
This mode can only be used for Discrete slaves that:
If pairs of bank A and B slaves are used, the slaves can only be synchronized per bank (all bank A slaves in 1 cycle and all bank B slaves in the next cycle).
Illustration of checked Digital I/O bank synchro:
