question

I'm not sure why this happens, but it seems like a timing issue were an output-port becomes unvailable for a small amount of (computation) time, causing the next item in the batch to be send to the other queue.

To circumvent this, I put a tiny delay (model time) between the evaluations of "Send To Port", to make sure both ports are considered. To do this I made the following changes to the model.

In the process flow of Station1/Queue1, I release all 30 tokens of the batch. They then, one at a time, enter a zone where they first open the output of the queue and then wait for 0.1ms.

In the "Push to List" code of Station1/Queue1 I added the line

current.output.close();

right before the end. This closes the output after each individual item, to force a pause, equal to the delay in the process flow, between the items.

The items are now distributed as before, when using the AGV.

community_fm.fsm

In the future you might want to consider using process flow to completely control the flow of items in cases like this, instead of relying on the 3D-model logic.