pull strategy - order of items

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question

Piotr K3 asked Mar 5, '18 Jeff Nordgren answered Mar 8, '18

pull strategy - order of items

Hi,

I want to build a simple model with 2 item types and 1 processor. What to do in the processor input to set the order of proceded items (for example 3 items with itemtype=1 then 2 items with itemtype=2 and again)? I'm thinking about global table or global list but I'm not quite sure what to set in them.

Software Version:

FlexSim 18.0.3

pull strategy

Answer 1 · 2018-03-05T20:51:36Z

Kari Payton answered Mar 5, '18 Kari Payton edited Mar 8, '18

You can add a custom code to the processor's "OnEntry" trigger. To use this code below, create a label on the processor called "count". The main idea is that the count will keep track with the # order of processed item. Then based on the number, it will assign the items "Type" 1 or 2 and change the count label.

if (current.count == 1) 
{
item.Type = 1;
current.count = 2;
} 


else if (current.count == 2)
{
item.Type = 2;
current.count = 3;
}


else if (current.count == 3) 
{
item.Type = 2;
current.count = 1;
}

Or you can do as you said and on the source create an arrival schedule with label Type for all of the arrivals. arrivallabels.fsm

arrivallabels.fsm (133.7 KiB)

· 1

Kari Payton commented · Mar 05, 2018 at 08:51 PM

@Piotr K3 did this work for you?

0 ·

Answer 2 · 2018-03-08T21:50:09Z

Jeff Nordgren answered Mar 8, '18

@Piotr K3

The way I understand what you are saying is that you already have a source that is producing flowitems with itemtypes 1 & 2. And what you want to do is to pull those itemtypes based on what you described, 3 of type1 then 2 of type2 and then repeat. And not create those flowitemtypes at the Processor.

Attached is a sample model that will do what I believe you are describing. Itemtypes 1 & 2 are created in the Source. Then in the Pull Requirement of the Processor is where I put all the code to do what you are describing. Take a look at the model and see if a solution like this would work for you.

Thanks.

pullsample-jn1.fsm

pullsample-jn1.fsm (18.0 KiB)

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