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Tanya W avatar image
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Tanya W asked Ben Wilson commented

Batching or List Error

I have a error in my process flow it goes to the list and never gets batched or pulled off. I am trying to Batch the station so they all Load and Unload at the same time. I attached a model any help would be appreciated.


July 14th.fsm

FlexSim 20.2.0
flexsim 20.2.0batching
july-14th.fsm (86.6 KiB)
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Ben Wilson avatar image Ben Wilson ♦♦ commented ·

Hi @tanya.w, was tanner.p's answer helpful? If so, please click the red "Accept" button on their answer. Or if you still have questions, add a comment and we'll continue the conversation.

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tannerp avatar image
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tannerp answered tannerp commented

I see the tokens piling up at the Pull from List activity.

But the list seems to be empty. What items are supposed to be pushed to the list and what object is pushing them?


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Tanya W avatar image Tanya W commented ·

Hello Tanner,

Thank you for getting back with me I am really struggling over this one. This is a continuation of another indexing one you try to help me a few weeks back. I am trying to simulate the indexing wheel to Load and Unload all stations at the same time. Later I will be loading in cycle time distributions and MTBF data and the bottle neck may shift and I want to see how it slows down the overall process.

Before you thought I could simulate the indexing wheel by using the Batching function in the Process Flow and a Global Table but could never get your suggestion to work. I will admit I am not very experience with process flow but I been trying to figure out where I went wrong.

The Idea is the stuff would go on a List and then it would Batch it then pull it off as the table was indexing. It looks like it just goes on the list but never comes off and I put a Push on List but that did not seem to help. Here is a link to our thread a few weeks back.


Indexing Wheel Thread


Tanya


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tannerp avatar image tannerp Tanya W commented ·

The pull from list will only fire if there are items to be pulled from the list. The items in the model I sent you in the other post were being pushed to a list at each processor. The idea was that all the Processors would only push the items to the list when they are done processing. This helps model the indexing table, which can't rotate until all the stations are done.

If you push the items to a list in the Flow tab, you'll see that the idea works.

That said, I like the idea of working with the smaller model that you attached in this question, so let's see if we can get that one working and then scale it to fit the other model.

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