Change the order on machines

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TalHzf asked Mar 15, '23 TalHzf commented Mar 17, '23

Change the order on machines

Hi all,

I am doing a simulation of a rework process:

Items 1,2 are processed on machine 1

Item 3 is processed on machine 2

Items 4,5 are processed on machine3

Now I want to change the order of items on machines:

Item 1 should be processed the first time on machine 1 and the second time on machine 2.

Item 3 should be processed the first time on machine 2 and the second time on machine 1.

The others stay the same.

Thank you.

I am using the Express Version.

Modell 3 Machines- Mod2- 15032023 -.fsm

Software Version:

FlexSim 22.2.0

rework flow rework priority in queue

modell-3-machines-mod2-15032023.fsm (61.9 KiB)

Answer 1 · 2023-03-15T22:28:53Z

Kavika F answered Mar 15, '23 TalHzf commented Mar 17, '23

Hey @TalHzf, you could try setting up some logic using labels on the items that get processed. You already have a "Type" label, but you can add another label like ("NeedsRework") to your items. You can have your Queue4 (the one they're all outputting to) send items to a port depending on some condition; you can set the condition to check the Type and whether it needs rework or not. Something like this:

Then you would have Queue4 outputs to the previous Queues.

You could also try building a PF for sending items to their respective queues based on a similar criteria like above. Something like this:

I can't really help more than this due to Academic Integrity, but I hope this is enough to get you off on the right track.

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TalHzf commented · Mar 16, 2023 at 12:44 AM

Hi @Kavika F ,

Thank your answer but I think I didn´t explain well my request.

My model is already done and the NeedRework are in my case the Label Step.

My Problem is how to permute the place of the second rework from for the item 1 with 3 without having to produce just item3

I did the following change: I send Item 1 for the Second rework to machine 2 and that for item 3 to machine 1

But the results were not like expected : I had just Item3 produced

I tried to set a Condition on the Pull a Percent (Processors), but I didn´t get the desired result.

Let´s consider this is the actual sequence ( small are first work, big are second rework)

I need to Permute the place of the dark Blue with the light grey.

Thank you.

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Felix Möhlmann TalHzf commented · Mar 16, 2023 at 07:53 AM

You have to provide the information on which processor a given step will take place somewhere. For example in the same table by adding more columns to it.

If you increment the "step" label each time an item finishes processing, you can use it to identify the correct column.

The information of where to send the item would be from column "item.step*2-1" and the processing time from column "item.step*2".

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1678953115226.png (13.3 KiB)

TalHzf Felix Möhlmann commented · Mar 16, 2023 at 09:37 AM

Hi @Felix Möhlmann ,

Thank you for your answer, But I didn´t understand it well.

Is there any possibility to do changes on the already available Modell without building another?

Thank you so much for your help

modell-3-machines-mod2-15032023.fsm

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modell-3-machines-mod2-15032023.fsm (61.9 KiB)

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