question

David.Y avatar image
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David.Y asked Andrew O commented

Impossible to Load a flowitem to Elevator

elevator problem.fsm


Hello,


There is a problem that the flowitem cannot be transferred between the conveyor and the elevator.

It seems that the timing of loading the conveyor and elevator is the cause. Is there a good solution?


Any help would be appreciated.




FlexSim 23.0.0
flowitem elevatortransfer blocktransfer elevator
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Andrew O avatar image Andrew O commented ·

Hi @David.Y, was David Seo's answer helpful? If so, please click the "Accept" button at the bottom of their answer. Or if you still have questions, add a comment and we'll continue the conversation.

If we haven't heard back from you within 3 business days we'll auto-accept an answer, but you can always unaccept and comment back to reopen your question.

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1 Answer

David Seo avatar image
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David Seo answered Felix Möhlmann commented

@David.Y

I am not sure only your poor information what's the problem in your model.

But I suggest you to put a Queue (with capacity = 1) in the end of the sending conveyor.

So the queue send the car item to the next receiving object.

The fast movie show the AGV hanger not to pick up the car item.

More advanced and detail solution need your model file not screen capture.

Only screen captured can't solve your logic issue.

Please upload the model file or make me know it using my email.

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David.Y avatar image David.Y commented ·
I uploaded modle file. could you check it out?
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Felix Möhlmann avatar image Felix Möhlmann David.Y commented ·

If an item arrives at the decision point while no token is present in the "Wait for Event" activity, the system will become stuck. The token is waiting for an item to arrive at the decision point which is already blocked by an item.

A better way to synchronize the 3D model with the Process Flow would be to use a list (which you seem to have tried already ?). When arriving at the decision point the item is pushed to list and can then be pulled by the token. With the list it doesn't matter whether the item or the token arrives first.

1675755590258.pngIf you don't want to add a separate list for each location, you can also utilize the list partitions. These essentially split a list into multiple sub lists. You can only ever pull from a single partition at a time.

elevator-problem_1.fsm

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