Queue max content

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Jonathan_Huang asked Mar 20, '24 Jonathan_Huang commented Mar 25, '24

Queue max content

Hi everyone

I have a problem with Queue max content

In my attached model

I set Queue6 max content = 1. However Operator can unload greater than 1 flow item into Queue6

And then please instruct me how to set the pitch distance between flow item and the one above it

when flow items stack vertically in Queue.

Thanks and best regards

Software Version:

FlexSim 23.1.2

queue logic

1710906125466.png (664.0 KiB)

Answer 1 · 2024-03-20T09:18:55Z

Felix Möhlmann answered Mar 20, '24 Jonathan_Huang commented Mar 25, '24

Only material flow through port connections or the pull logic on the object itself automatically adheres to the maximum content setting. If you control the item transport through Process Flow you have to check the capacity before moving the item.

A basic option would be a Decide activity that checks the current content of the queue against the maximum. If there is no space, the token enters a Wait for Event activity that listens for an item exiting the queue and only then continues.

Depending on how many items can be transported simultaneously, you might also have to track the active inbound transports and add those to the content of the queue when doing the check.

For the stacking issue see the post linked below.

https://answers.flexsim.com/questions/129843/problem-stacking-pallets-in-rack.html#answer-container-129838

1710926156067.png (53.8 KiB)

· 5

Jonathan_Huang commented · Mar 20 at 09:48 AM

Hi Mr Felix

Thank you for your answer

I control the item transport through Process Flow. So I check the capacity before moving the item like your comment.

By the way. I am using Flexsim version 23.1 so the Breathe activity is not available. Which activity could I used instead?

Thank you!

0 ·

Felix Möhlmann Jonathan_Huang commented · Mar 20 at 10:03 AM

A "Breathe" is just a delay of 0s.

Since it's somewhat common to have to use such a delay to assure correct timing the developers added a dedicated activity for it to save some time when adding it from the library.

0 ·

Jonathan_Huang Felix Möhlmann commented · Mar 23 at 12:00 AM

Hi Mr Felix

I already created a "Decide" activity as your instruction. But there was an error.

Could you please help me to check it?

Combiner OK 20240323 close queue.fsm

Thank you!

0 ·

1711152006562.png (441.3 KiB)

combiner-ok-20240323-close-queue.fsm (64.7 KiB)

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