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Old 03-19-2016, 09:52 AM   #1
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Post Arena Simulation question CONWIP

Hey guys,

Im designing an Arena simulation and im struggling to figure out how to set a number of cards to model A CONWIP system that maintains a constant WIP in the system. Any help would be much appreciated.

Cheers!
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Old 03-19-2016, 03:58 PM   #2
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Default Re: Arena Simulation question CONWIP

A quick google search found this:

If that doesn't help I'd recommend a forum more geared to Arena and not a general computer forum.
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Old 03-20-2016, 11:04 AM   #3
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Default Re: Arena Simulation question CONWIP

Thanks for the reply, already watched that though and unfortunately does not provide the info I need. Been trying to find a more specialised forum most of them seem to have become inactive. If anyone could suggest a more suitable forum that would also be very helpful
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Old 03-21-2016, 03:16 PM   #4
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Default Re: Arena Simulation question CONWIP

Maybe I can help you, I have some familiarity with Arena.
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Old 03-31-2016, 10:49 AM   #5
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Default Re: Arena Simulation question CONWIP

Hi, my name is Sara, and i'm developing a simulation model in Arena software. I have some doubts and i will really appreciate if someone help me.

# In my model, i have three processes (Process 1, Process 2, Process 3). The logical construction is the following:

Create -> Process 1 --> Process 2 --> Process 3 --> Dispose

# Now, i want to hold the entities during 1 hour before Process 2, waiting for a signal. So, i need to use the hold module and the signal module. The hold module must be before process 2 waiting for a signal, like this:

Create -> Process 1 --> Hold --> Process 2 --> Process 3 --> Dispose

The entities that are waiting in the hold module, when they receive the signal, they must continue to process 2 and process 3 to dispose module. But my problem is the following: when the entities receive the signal, i want, at the same time,that some new entities enter in the system to be processed in process 1.
Was i clear?
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Old 03-31-2016, 11:05 AM   #6
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Default Re: Arena Simulation question CONWIP

Quote:
Originally Posted by ASFC View Post
Hi, my name is Sara, and i'm developing a simulation model in Arena software. I have some doubts and i will really appreciate if someone help me.

# In my model, i have three processes (Process 1, Process 2, Process 3). The logical construction is the following:

Create -> Process 1 --> Process 2 --> Process 3 --> Dispose

# Now, i want to hold the entities during 1 hour before Process 2, waiting for a signal. So, i need to use the hold module and the signal module. The hold module must be before process 2 waiting for a signal, like this:

Create -> Process 1 --> Hold --> Process 2 --> Process 3 --> Dispose

The entities that are waiting in the hold module, when they receive the signal, they must continue to process 2 and process 3 to dispose module. But my problem is the following: when the entities receive the signal, i want, at the same time,that some new entities enter in the system to be processed in process 1.
Was i clear?
When the entities leave the Hold module, they go to a Separate module, generating two entities. One goes to Process 2 and the other goes to Process 1. Each entity that goes through the Separete module will generate another entity.
ps: english is not my native language, sorry any mistakes
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Old 03-31-2016, 11:14 AM   #7
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Default Re: Arena Simulation question CONWIP

No problem, english is not my native language too

I understand what you told me. I am going to experiment your suggestion (Eu vou experimentar a sua sugestão, para ver se funciona).

Thank you! Muito obrigada.
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Old 03-31-2016, 11:22 AM   #8
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Default Re: Arena Simulation question CONWIP

Your suggestion is not what i want, sorry.

What i need is: after de entities leave the hold module to continue the process, i want that more entities enter in the system through the create module. Do you understood what i mean?
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Old 03-31-2016, 11:26 AM   #9
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Default Re: Arena Simulation question CONWIP

Do you know how many entities you want to create each time? I don't know how to put a signal in the create module. You can make the separete module create as many entities as you want. It works the same as generating entities from the create module, you just direct them to the beginning of the process.
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Old 03-31-2016, 11:38 AM   #10
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Default Re: Arena Simulation question CONWIP

Quote:
Originally Posted by pedromss View Post
Do you know how many entities you want to create each time? I don't know how to put a signal in the create module. You can make the separete module create as many entities as you want. It works the same as generating entities from the create module, you just direct them to the beginning of the process.
With the hold module, i want to free all the entities that are waiting for the signal. I create the create module apart, like that:

create 1 --> signal --> dispose

create --> process 1 ---> hold -->dispose --> process 2 ---> process 3--> dispose

But, you told me that the separate module works the same as generating entities from the create module, just direct them to the beginning of the process, but if i direct to the beginning of the process, i'm directing the same entities that were in the hold module? (i send you an attachment)
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