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Óscar Manuel CMN avatar image
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Óscar Manuel CMN asked Óscar Manuel CMN commented

job shop

Hello again!

I am trying to make a flexible Job Shop where jobs have a certain route. I have several problems:

1. Two operators can charge me the same processor even though its is already processing an item. I have since the maximun content is 1 but it does not comply.

2. "The operators wait too long" If for example in "Cola1" there is an item of type 1 and an item of type 4, the one of type 1 has to go to M1 but the one of type 4 has to go to M3 or M4, but still, the rest of the operators wait until the item of type 1 has been processed to tak another order from the queue. This greatly slows down the process.

3. Sometimes I get the following error when the order has to go to M3 or M4.

CLARIFICATIONS:

To know the types of job I created the label "TipoTrabajo"

In each queue, on Entry, I create a "destination" label with the destination they have to got to based on the "TipoTrabajo" label.

There is a global table created with the destinations:

Rows=queue where the item is collected

Columns=value of the "TipoTrabajo" label

what is inside the table=destination

Thanks!

19.0.0 Version

FIFO-WHN1-SQ-k2.fsm

FlexSim 19.0.9
flexsim 19.0.9job shop
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1 Answer

Braydn T avatar image
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Braydn T answered Óscar Manuel CMN commented

@Óscar Manuel CMN

I can't see the processors having over the max content because of the exception, but I think you are overriding the max content with a process flow unload. Process flow does not take max content on a processor into account.

Again, I can't see the item waiting too long because of the exception. My guess is it looks like you are using 3D to control the model flow.

The exception is because the wait for event is listening to a group, but wait for events do not work for listening to groups.

I would either move most of your logic to the 3d or to process flow. you can mix them like this, but it makes it easier to have it more isolated.



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Óscar Manuel CMN avatar image Óscar Manuel CMN commented ·

But then how can I solve it?
I don´t understand

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Braydn T avatar image Braydn T Óscar Manuel CMN commented ·

@Óscar Manuel CMN

You cannot listen to a group in a wait for event. You need to listen to a specific object.

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Óscar Manuel CMN avatar image Óscar Manuel CMN Braydn T commented · 
 
                     
But how can I specify the object if it has a group as reference? I have done a different wait for event but it still fails
 
                     
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