how to load certain number of goods pulled from a list to a truck

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xzlee asked Sep 21, '23 xzlee commented Sep 21, '23

how to load certain number of goods pulled from a list to a truck

As a new learner of flexsim, I have read the official tutorial and am working on my first project: simulating the operation of a port.

now I am working on a very early stage:

1. ship comes periodly, unload the items along side the dock.

2. folk lifter transports the items to a field.

3. trucks come periodly.

4. when trucks come, folk lifter transports at most 3 items to the truck then trucks leave.

I have finished the first 3 steps smoothly with the help from the forum. But I encountered a new problem in step 4. I used a list to store items transported to the field, and when truck comes, I pull at most 3 items from the list, and build a tasksequence ordering folk lifters to transport the pulled items to the truck. In the simulation, 3 items in the list can be pulled from the list as I excepted, But only 1 of them will be transported to the truck. I have googled the answer but didn't find it. Can you please help me with it? Really thank you for your help.

ex001_autosave.fsm

Software Version:

FlexSim 22.2.0

pull from list tasksequences

1695268995271.png (32.4 KiB)

ex001-autosave.fsm (2.2 MiB)

· 1

xzlee commented · Sep 21, 2023 at 07:52 AM

after multiple trying, I think it might be a problem related to token lable, but I cannot fix it.

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Answer 1 · 2023-09-21T08:02:54Z

Paula LG answered Sep 21, '23 xzlee commented Sep 21, '23

Hi,

You were correct trying to implement a run sub flow activity to do what you asked but a few things about it needed to be changed:

- The label you created on the tokens doesn't need the "token." part, you have to write directly its name. The way you were doing it, it was creating a label with an empty name that couldn't be accessed.

- There's no need to run the tokens one at a time because you are already assigning the task executer via a dispatcher.

- The labels have to be copied on the token and not read only on Parent, to be able to have independent task sequences on each created token.

I attach your model with the changes applied: ex001-autosave.fsm

I hope it helps!

1695283118805.png (25.5 KiB)

1695283181872.png (24.4 KiB)

ex001-autosave.fsm (202.2 KiB)

· 1

xzlee commented · Sep 21, 2023 at 08:29 AM

Thank you again for saving me twice. Moreover, your explaination is concise and clear. Appreciate you so much.

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