Count the number of boxes on a pallet

[lorenzo_pio_g]

[ FlexSim 22.1.3 ]

Hi! My model has a combiner that groups 10 boxes on a pallet. How can I instantly count the number of boxes on the pallet?

[Jeanette_Fullmer · Accepted solution]

If you have a reference to the pallet then you can look at its subnodes length

pallet.subnodes.length

[lorenzo_pio_g]

How can I create a reference to the pallet?

[Jeanette_Fullmer]

There are many ways.

One way is to create an Event triggered source that looks at the combiner for on exit or on process finish and the exiting item label is the pallet.

[lorenzo_pio_g]

Sorry, but I can't figure out which window is this.

[Jeanette_Fullmer]

EventTriggered Source.fsm

[lorenzo_pio_g]

That's my model. I want to know instantly how many boxes are on the pallet on the combiner

[Jeanette_Fullmer]

In the future please follow out best practices (Please read them) and attach your model with your questions.

Could you be more specific at what point you want to know? After each item is loaded? After its been processed? Just change the event on the source.

[lorenzo_pio_g]

So do I have to use a processflow?

[Jeanette_Fullmer]

It is one way you could do this. I could not tell you all the ways because there are so many. If you would like advice on the best way, could you provide more detail in what you are trying to accomplish?

[lorenzo_pio_g]

Bakery1.fsm

In my model I have 2 robots. At the beginning both robots carry the boxes on the combiner at the bottom. Through reinforcement learning I want to train the second robot (the top one) to choose which combiner to deposit the boxes on. As you see, the combiner collects the boxes on a pallet: as soon as the boxes on a pallet become 10, the combiner passes the goods on the left queue. To use reinforcement learning, I would like to find a way to know instantly how many boxes are on the pallet on the combiner, waiting to be processed.

[Jeanette_Fullmer]

Model.find("Combiner1").as(Object).getVariable("currentcomponentsum");

componentSum.fsm

[lorenzo_pio_g]

Did you use process flow?

[lorenzo_pio_g]

the process flows of the project you sent me are empty

[lorenzo_pio_g]

Can I use the command you recommended to use in a trigger for the robot?

[Jeanette_Fullmer]

Yes,

I used it in the script window to show you it worked.

[lorenzo_pio_g]

Can I Use an On State Change Trigger? In this case i set:a variable called numItem that i will use as observation for the RL

numItem = Model.find("Combiner1").as(Object).getVariable("currentcomponentsum");

[Jeanette_Fullmer]

Is numItem a parameter?

Model.parameters["numItem"].value = Model.find("Combiner1").as(Object).getVariable("currentcomponentsum");

[lorenzo_pio_g]

Yes, numItem is an integer that I initialized in the Observation table