Unloading a batch of totes in several different racks

[magdalena_b3]

[ FlexSim 22.1.0 ]

Hi, I have a problem with unloading a batch of totes in several different racks.

My model needs to work like that:

In the end of conveyor there is a queue from where AGV need to pick up 4 totes (that is the batch size) and travel to exact Rack to unload one of the tote, then go to another rack and unload second and so on...

Every token has assigned labels, one of them is "Unload" in which is defined where(to which rack) the AGV need togo and unload one of the totes. Unfortunatelly, using RunSubFlow the model works like : AGV go to "Unload" assigned to firs token and unloding all of the totes in one rack. It seems to like the acces t other three tokens is loosed.

Here is my model

ex_racks_batch1.fsm

[kavika_faleumu · Accepted solution]

Hey @Magdalena B3, this is a similar problem to one I answered here. I modified my solution from that a little to what you're asking for. I modified your process flow so it would only spawn one token for the AGV to use. I push the boxes onto a List and append those boxes to a label called Items as I take them off the queue. Once all the boxes are taken off the queue, I travel to each location based on the Rack number provided. I used

model.find("Rack"+string.fromNum(token.Order.Rack))

to find the correct Rack, pulling the Rack number from the label Order I set on the token before performing the subflow to keep track of which box we're working with at the moment.

When it's done, it travels back to the queue and picks up another 4 items.

solution.fsm

[magdalena_b3]

Thank you for your solution, it works! 🙂

I have one more question. In that model I have also the opposite situation. I need to pickup 4 totes from four different racks (using labels) and deliver for one queue and unload all of them in that one point.

I tried to use your solution with some modificatios to do it, but it doesnt work. Do you have any idea why ?

Model is attached.

ex_racks_batch2.fsm

[magdalena_b3]

In that case, I use 2 lists of items. One is RackList with all of the totes in warehous. The second is Mrowka_1_tab with ordered totes to deliver. AGV need to pick four totes from the Mrowka_1_tab which are in warehouse and deliver to on queue.

[jason_lightfoot_adsk]

Your first ID in the table is 0 and you have no items in the list with ID zero.