Number of entities that the block has accepted. You see this port only if you select Input port available for entity arrivals, and then select the Report number of entities arrived, #a check box.
After entity arrival
The initial output value is 0. This value is in effect from the start of the simulation until the first update by the block.
Dialog Box
Input port available for entity arrivals
Determines whether the block accepts or blocks entities that attempt to arrive.
