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Ryosuke S avatar image
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Ryosuke S asked Ryosuke S commented

Picking multiple items (at once) on FloorStorage using crane

@jason.lightfoot This question is related from this question. After crane puts 4 flowitems to the slot, I would like the crane to pick those 4 items from the slot and carry to Queue2. However, upon loading, I get error at the same time, the pickUpItems is returning 7 items where there should be 4.

Load_Unload_Gantry3.fsm

FlexSim 20.1.3
processflowflexsim 20.1.3cranefloor storage
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Jason Lightfoot avatar image
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Jason Lightfoot answered Ryosuke S commented

There's nothing to stop you assigning more than 4 items per sloit at the moment which it sounds like you should - either by checking hasSpace() or some thing else.

You can also filter out of the the slotItems array those that are not yet located in the floor storage.

You could also just pull those that are stored in the slot by pushing to the list with a partition of the slot and then pull them off by partition instead of using the slotItems of the slot - which gets all the items assigned.

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Ryosuke S avatar image Ryosuke S commented ·

@jason.lightfoot Thank you for suggesting. But then, which solution do you suggest in my case? I don't have experience in these FlexSim Storage Management enough to choose which one is suited, and also to create the flow.

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Jason Lightfoot avatar image Jason Lightfoot ♦ Ryosuke S commented ·

Here's an example of taking the stack of 4 to Queue2. I removed the push to list on the sendtoPort and instead detect the slot entry in the process flow and push to StoredItems there, partitioned by slot. Then when the slot reaches 4 as before, I now pull from the StoredItems partition for that slot.load-unload-gantry3_jl2.fsm

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Ryosuke S avatar image Ryosuke S Jason Lightfoot ♦ commented ·

@jason.lightfoot Wow! Thank you very much. I'll need to study what you did.

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Joerg Vogel avatar image
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Joerg Vogel answered Ryosuke S commented

Internally there is a list, which manages the slot items. There are four states an item can be in. What you have to check is the state ”stored”. Until an item is released from the warehousing module you must check its state. Only storage items in the state stored are actually present in the slot. Only those can you transport.

You must accept that there is much more to learn about the warehouse module.

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Ryosuke S avatar image Ryosuke S commented ·

@Jörg Vogel Thank you for your comment. I totally agree with you, I need much to learn about the warehouse module. But I'd like to learn how to use them. From the online document I can understand what it is, but since I'm not warehouse specialist, I can't imagine how to make use of them.

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