question

TalHzf avatar image
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TalHzf asked TalHzf commented

Rework Flow

Hi all,

I have different Products , which should be processed with machine 1 or 2 or 3 and machine 4 for two time, It means the product which is produced from the first Machine should do the cycle:

Machine 1->Machine4 twice .

I have 14 different Items, 3 should be processed with Machine 1, 6 with machine 2 and 5 with the third Machine.

I can untill now do it for one Machine with one Label but not for all the items.

I don't know which condition to release the Products, that are worked twice.

The flow of every item is showen in the Photo.

Thank you for you Help.

ReworkPriorityTH.fsm


1670187770090.png


FlexSim 22.2.2
rework flowrework priority in queuerework process
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1 Answer

Felix Möhlmann avatar image
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Felix Möhlmann answered TalHzf commented

I would suggest to use a single "Type" labels for all items, since it's easier to send an item to different locations by label value than by the existance of labels. So source1 would assign the values 1-3, source2 4-9 and source3 10-14.

Similar to your table above, you can then create a single table that holds all the necessary information. Since items always use the same machine for step 1 and 3, that value only has to be given once. The rest of the columns are the processing times for each step. The example below only has example values for the times and the exact layout can of course differ.

1670226409775.png

To determine which value to use, create a "Step" label on the items, starting at 1. Then increment it by 1 in the machines' "On Process Finish" trigger. The processing time is then given by looking at the step+1 column.

1670226674790.png

This label can be used in the "Send to Port" option of machine 4 to determine whether the item is done or needs to be send back (step < 4). And Queue7 can read the correct output port from the first column of the table.


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