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Kari Payton avatar image
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Kari Payton asked Regan Blackett commented

Problem with items appearing in queue after being loaded and moved to a warehouse.

I have a forklift loading an item from queue "HOSES 1". The issue is that after the forklift loads the item, another item appears in the queue. It looks like it is coming from another queue, but my process flow doesn't say for this to happen. Link to File

FlexSim 16.2.1
process flowqueue
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Regan Blackett avatar image
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Regan Blackett answered Regan Blackett commented

@Kari Payton

I think we need to check your references in the Load Queue subflow. The pallet that is being loaded is Pallet24 that originates in "GLASS 450 DW", and not the Pallet that was created into "HOSES 1". All of the Create Object activities are overwriting the item label, causing the references to the created objects to be lost, such that that only valid reference left at the end of the block is the aforementioned pallet in "GLASS 450 DW".

My suggestion would be to set different labels for each pallet created in that block, or use the 'Insert at Front of' option on the 'Create Object' activity properties to put all the references into an Array and reference them as elements in the array.

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Kari Payton avatar image Kari Payton commented ·

@regan.blackett How can you tell which pallet is being loaded? On the load entry, I referenced it to a label "queue". That label "queue" reads "HOSES 1"

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Regan Blackett avatar image Regan Blackett ♦ Kari Payton commented ·

I'm looking at the item label on the token, it references Pallet24, not Pallet22 which is the name of the pallet in the "Hoses 1" queue. If you step through or run the model really slowly you will notice that the forklift after traveling to "Hoses 1" is moving really quickly over to the "GLASS 450" queue and grabbing the pallet from there. Since the pallet referenced in the item label isn't found in the station you designated for the Load, it grabs the right item from wherever it happens to be.

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Kari Payton avatar image Kari Payton Regan Blackett ♦ commented ·

I see now. Do you ahve any ideas what can I do to change this. I want it to load from Hoses 1.

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