Slot Stacking Order not working

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Roi Sánchez asked Mar 4, '22 Jason Lightfoot edited Mar 15, '22

Slot Stacking Order not working

Hi everyone,

Following this question, I am changing the Slot Stacking Order during the simulation basically to get items of the same type stacked across Y+ and items of different type across X+ if there is space in the slot. However, there are certain times in which red and green items (type 1 and 2) got mixed in the same slot across Y axis even though the Stacking Order is set apparently right.

Am I missing something?

22.0 Demo Model Reacomodos_1.fsm

Software Version:

FlexSim 22.0.1

custom code storage system user command slot size stacking order

220-demo-model-reacomodos-1.fsm (84.0 KiB)

Answer 1 · 2022-03-04T13:27:04Z

Jason Lightfoot answered Mar 4, '22 Roi Sánchez commented Mar 15, '22

If there's space in the slot then the item will go there - there's no rule to say items have to be aligned with others of the same type. Can you step though and show us the allocation and position sequence you think is wrong?

· 14

Roi Sánchez commented · Mar 04, 2022 at 01:41 PM

Thanks for the answer Jason.

For example, in this situation in which the red item has space in both directions (across X+ and Y+), I have previously set that the Slot Stacking Order has to be prioritized across X+ because the other item is different and so, it should not be stacked across Y+.

I mean, it should be placed on the red cross but in my case for this particular seed, it is wrongly placed on the green one.

I guess I am not fully understanding what the Slot Stacking Order accounts for, I mean, it is a way of prioritizing but not preventing, right?

Do you come up with some workaround apart from setting the local coordinates of the items within the slots?

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1646400983182.png (736.9 KiB)

Jason Lightfoot ♦ Roi Sánchez commented · Mar 07, 2022 at 02:10 PM

Could you give some examples of valid arrangements and invalid one?

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Roi Sánchez Jason Lightfoot ♦ commented · Mar 07, 2022 at 03:24 PM

Thanks for your help @Jason Lightfoot. Let me explain it again:

- Items of different type (color) can´t be stored across Y in the same slot. Preferrably, they will be stored in a partially occupied slot, but across X if there is space. If not, they will be stored in an empty one.

- Items of the same type can be stored across Y if there is space. If not, they will they will be stored in a partially occupied slot across X if there is space. If not, they will be stored in an empty one.

So, this is invalid arrangement:

And this would be a valid one:

As you could see in second 12, the red item is stored in front of the green one even though the stacking order for the rack is apparently set according to the defined criteria and there is enough space in X to store it:

I attach the model.

22.0 Demo Model Reacomodos_3.fsm

Thanks again!

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1646666162143.png (120.3 KiB)

1646666234055.png (81.8 KiB)

220-demo-model-reacomodos-3.fsm (84.6 KiB)

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Answer 2 · 2022-03-04T16:31:43Z

Joerg Vogel answered Mar 4, '22 Roi Sánchez commented Mar 7, '22

Slot is lowest category in Warehousing. I would use in such a case more smaller slots and work with labels to summarize adjacent slots to a slot group to achieve a desired mechanism.

· 1

Roi Sánchez commented · Mar 07, 2022 at 07:27 AM

The size of the items that can be stored is variable. I already came up with this approach but discard it because of this.

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