How to assign different paths to an item?

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question

Carolina R2 asked Aug 10 2020 at 6:23 PM Ben Wilson commented Aug 28 2020 at 8:52 PM

How to assign different paths to an item?

I'm having a problem with my simulation model. I have several machines (processors) along a system of conveyors and each one of my items has to be processed in a sequence of different machines, which is given by a global table. In this table, each row corresponds to a type of item, and the columns indicate the port number of the queue to which each the processor is connected to. Thus, the columns inform where each type of item has to go, i.e., the set of processors where each item type has to go. Then, I configured the output send to port of the flow tab of the queue to use Global Table lookup, in which the row is the item type (a label assigned when the item is created) and the process, another label assigned when the item is creating, informing the sequence of processors to which is an item has to go.

I have 2 problems:

- First one is that the items are not following the conveyor to reach the processors, after being generated by the source and sent to the queue.

- Second is that the items are not following the global table, and they are only being processed by one processor.

Can anyone help me solving this problem?

Thank you very much in advance, and I'm looking forward to hearing from you!

Teste_w_GlobalTable.fsm

Software Version:

FlexSim 20.1.0

global table flexsim 20.1.0 multiple path

teste-w-globaltable.fsm (64.1 KiB)

· 5

Marcello Rosadini commented · Aug 11 2020 at 3:01 PM

Hello Carolina, please attach your model to better understand the issue.

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Carolina R2 commented · Aug 11 2020 at 6:21 PM

Here you are the model @marcello.rosadini. Thank you in advance!
Teste_w_GlobalTable.fsm

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teste-w-globaltable.fsm (64.1 KiB)

Marcello Rosadini commented · Aug 12 2020 at 7:23 AM

Carolina,

since you are using conveyors, instead of connecting the objetcs directly you can use decision points to associate them with their proper exit points. I am attaching a sample model that follows a table as you describe. I am asuming that each machine can process more than 1 object at a time. If this is not the case, and if you don't have a buffer, then you will need to implement logic for recirculation.

support hc.fsm

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support-hc.fsm (44.3 KiB)

Carolina R2 commented · Aug 12 2020 at 9:38 AM

Thank you @marcello.rosadini ! But I don´t understand where you establish connection with the global table. You shouldn't have some "By Global Table Lookup" or something like this? When I try to implement the same logic in my model, the items only follow the conveyor, but are not send to the processors.

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Ben Wilson ♦♦ commented · Aug 28 2020 at 8:52 PM

Hi @carolina.r2, was marcello.rosadini's answer helpful? If so, please click the red "Accept" button on their answer. Or if you still have questions, add a comment and we'll continue the conversation.

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Answer 1 · 2020-08-12T09:50:07Z

Marcello Rosadini answered Aug 12 2020 at 9:50 AM

Carolina, please comment on my answer, but do not create a new answer with a comment. I recommend to take a look at Best practices for using this Answers site

Please take a look at all the elements in my model. The destination is set in the triggers at the decision points. "By Global Table Lookup" is just a preformatted way of writing :

Table("Tablename")[row][column] ;

The output connections from the decision points must be in order for this to work.

For the logic in the decision points I've created a Decision Point Type called "clasificador"

You can look at it by going to Toolbox-->DecisionPoint Types

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