topic Re: Check buffer capacity in FlexSim Forum

Check buffer capacity

michela_08 — Sun, 11 Dec 2022 08:31:39 GMT

[ FlexSim 22.2.3 ]

In the process flow I want to add this condition. Note : All the items from Queue 1 exit based on Combiner's target quantity. Queue 1 is connected to combiner as Port 2. In this model, 10 items from Port 2(Queue 1) exit all at once.

Problem : Before the transporter drops the items into Queue1. I want to check if Assigned qty < Capacity. Where capacity decides the actual capacity of Queue1 and Assigned decides the items currently in Queue1. Only then the transporter has to drop the items into Queue1 or else it has to wait.

Transporter_logic.fsm

Re: Check buffer capacity

jason_lightfoot_adsk — Sun, 11 Dec 2022 14:00:50 GMT

Queue1 is not connected to port 2 of the combiner as you describe.

You need pointer data in your table pointing to the Queue1 - not the string/path.

When an item exits the Queue1 I would have logic that checks if that PartNumber has dropped below the trigger quantity and if so push a replenishment job to a list. You seem to have this loop check for every part that enters Queue3 which seems wrong/messy.

Here's a suggestion:

transporter-logic_jl.fsm

Re: Check buffer capacity

michela_08 — Sun, 11 Dec 2022 16:41:21 GMT

Thank you @Jason Lightfoot for the model.

I want the number of quantities exiting and then adding in Queue1 to be shown in the Available Qty column of the global table "Process_Flow".

Available Qty is nothing but the items available in the Queue1.

How to achieve this?

Re: Check buffer capacity

jason_lightfoot_adsk — Sun, 11 Dec 2022 16:53:09 GMT

I would try incrementing the Available column on the queue's Pull trigger. This way the item is counted in the replenishment decision before the transporter has delivered it to the queue.

Re: Check buffer capacity

michela_08 — Mon, 12 Dec 2022 03:04:06 GMT

Can you tell in a sample model? I have added the command in the Queue 1 on Entry and On Exit. It seems to be not updating in the global table "Available Qty"

Re: Check buffer capacity

jason_lightfoot_adsk — Mon, 12 Dec 2022 11:13:46 GMT

What makes you say it's not working? No items remain in the queue so all the values are zero.

Re: Check buffer capacity

andrew_o2 — Thu, 15 Dec 2022 20:08:15 GMT

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