Proper way to setup rework priority

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question

Howard asked Jun 27 2024 at 8:42 PM Howard commented Jul 24 2024 at 3:56 PM

Proper way to setup rework priority

I want to setup a source to add rework to the queue pending to be processed.

I setup priority = 1 for the rework items from the source but it doesn't not get to transfer and processed first. How should I set this up?

Is it possible to set priority in a global table and use that higher priority items get transferred and processed first?

globaltabledemohr-globallist- Rework.fsm

Software Version:

FlexSim 24.0.2

priority rework

globaltabledemohr-globallist-rework.fsm (80.8 KiB)

Answer 1 · 2024-06-28T08:21:34Z

Felix Möhlmann answered Jun 28 2024 at 8:21 AM Howard commented Jul 24 2024 at 3:56 PM

First you need a way to differentiate between normal items and rework items. For this I added the "Rework" label to all items with a value of either 0 or 1.

You can now use this label in two different spots to give priority to the rework items.

- Make the priority of the transport task sequence created in Process Flow (Create TS) depend on the label, so rework items are moved first.

- Make Queue1-4 sort their items by the rework label whenever a new item enters (On Entry Trigger -> Control -> Sort By Expression)

I modified the arrival times of Source3 to show both cases in the attached model.

globaltabledemohr-globallist-rework_1.fsm

globaltabledemohr-globallist-rework-1.fsm (80.6 KiB)

· 6

Howard commented · Jul 13 2024 at 2:20 AM

How do I approach to set up rework arrival by percentage?

For example, Product 1 have 30% rework rate. I want to setup a rework part "ProductRW1" to have arrival at 30% of the time.

Currently, the arrival schedule will always have a ProductRW1 right after Product1.

Please let me know if this is a good approach or there is a better way to handle this.

globaltabledemohr-globallist-rework-2 (Rework in one arrival table).fsm

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1720836977365.png (35.8 KiB)

globaltabledemohr-globallist-rework-2-rework-in-on.fsm (87.1 KiB)

Felix Möhlmann Howard commented · Jul 15 2024 at 6:46 AM

Assign the Rework label by percentage in the On Creation trigger and adjust the Type if needed.

globaltabledemohr-globallist-rework-2-rework-in-on_1.fsm

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globaltabledemohr-globallist-rework-2-rework-in-on.fsm (81.7 KiB)

Howard Felix Möhlmann commented · Jul 19 2024 at 10:43 PM

This method seem to work but I saw a weird pattern when the rework % at 10%, 50%, 60%, 70%.

Assume the arrival source Qty=10, at 10% shouldn't there be 1 rework item and at 70% there should be 7 rework item?

Rework %	# of Rework item
0%	0
10%	2
20%	2
30%	3
40%	4
50%	4
60%	4
70%	5
80%	8
90%	9
100%	10

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Howard commented · Jul 16 2024 at 2:30 PM

For each of the rework item, is there a way to set the itemName to ProductRW1 for product1 for example? I need the itemName=ProductRW1 so it will pull the correct rework steps from the global table.

What does this code mean below?

item.Rework == 1 ? (10):(item.Type)

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Felix Möhlmann Howard commented · Jul 16 2024 at 2:38 PM

Use a code snippet to set the name based on the rework label. Though I would not use names to identify items. Typically labels like "Type" are used for that purpose.

if(item.Rework == 1) {
item.name = "ProductRW1"
}

For the expression, see the box on "Ternary Operator" here:

https://docs.flexsim.com/en/24.2/Reference/CodingInFlexSim/WritingLogic/WritingLogic.html#if

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