Please remove the locking elements in the front connector if you want to use the front connector of the 6ES7322-1HH00-0AA0 as the front connector for successor module 6ES7322-1HH01-0AA0. These light gray coding elements prevent you inadvertently plugging in a front connector on a different module (Fig. 1) and must be removed in this case.
Fig. 1: Locking elements - back of connector
Use a screwdriver to press the elements out backwards:
Fig. 2: Front of connector
Since the digital output module 6ES7322-1HH01-0AA0 can be used up to a rated voltage of 230V AC, it needs to be locked against use with the older digital output module 6ES7322-1HH00-0AA0, because this can only be used up to a rated voltage of 120V AC.