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Lambert avatar image
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Lambert asked Lambert commented

Pull requirements

Hi, could anyone help me with this question?

I am simulating a robot placing boxes in pallets based on different destinations (colored queues).

1646909151421.pngI use a pull from list strategy, where the robot places a box in the corresponding colored queue based on the correct destination, and then the box moves directly into the combiner.

1646909218827.png


How can I do so that the colored queue does not pull from the list, unless there is already an empty pallet placed in the combiner?

thank you for your help

FlexSim 22.1.0
list pullcombiners
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1 Answer

José Antonio MD avatar image
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José Antonio MD answered Lambert commented

Hello @Lambert,

Probably in your example you can use ProcessFlow. See example: Example_PullList.fsm.

The logic:

  • Push to list using 3D logic.
  • Create PF logic:
    • OnEntry pallet start pull.
    • Pull Qty necessary.
    • Move pallet completed to next station

I hope I have been helpful.



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Lambert avatar image Lambert commented ·

Thank you Jose Antonio, that was very helpful.

How can I do to move the boxes via the Robot in process flow?

The "move object" activity is "teleporting" the item, hence is not using the robot.

thank you

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Jason Lightfoot avatar image Jason Lightfoot ♦♦ Lambert commented ·
Create a load and unload task for the robot.
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José Antonio MD avatar image José Antonio MD Jason Lightfoot ♦♦ commented ·
  • The Puller is "who is trying to pull from list". In this case Puller is token.Queue (see source in ProcessFlow). This is parametric and can be "Queue1", "Queue2" or "Queue3".

1646925740857.png1646925758401.png

  • In your example, I'm using a label in the queue to filter. "Puller.Type" is reference to the label Type in Queue1, Queue2 or Queue3.
  • To use a robot: see example (use a resource, acquire, send task and release it).Example_PullList_Robot.fsm

I hope I have been helpful.


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