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Pull Control for a station

Pioneer
Pioneer

Hello everyone,

 

I'm not too familiar with Plant Simulation at this point. 

However, I would like to implement a pull control for a buffer to pull entities from different buffers/stores and another one for a station/machine to pull from a store.

 

Pull control.PNG

I tried to use this version as a pull control, but I am not quite sure how to adjust it.

 

is
do
-- @,?: das Objekt, für das die Steuerung aufgerufen wurde
local blockListe := ?.VBlockierliste;
?.entblockieren(blockListe[1]);
end;

 

 

It would be highly appreciated if someone could help me with this.

Thank you!

5 REPLIES 5

Re: Pull Control for a station

Siemens Phenom Siemens Phenom
Siemens Phenom

Hello David,

 

attached you will find a small demo model showing how the pull control of Plant Simulation works.

 

Regards

 

GG

Regards
GG

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Re: Pull Control for a station

Pioneer
Pioneer

Hello GG,

 

Thank you for your example.

Just to clarify the procedure to see if I understood it correctly:

 

The ParallelProc is being filled up until it reached its capacity and then the SingleProc pulls one item at a time!?

Is there also a way that the SingleProc pulls beforehand? 
Let's say the workspace is available and then the worker/station would pull an entity from storage?

Thank you.

Regards,

David

Re: Pull Control for a station

Siemens Phenom Siemens Phenom
Siemens Phenom

Hello David,

 

the pull control is activated when the Singleproc can process a part (is empty not failed, not paused,..) and a MU wants to exit the ParallelProc.

 

An other way to "pull parts" from storage is to use the worker carrying parts from storage to the workplace. Is this what you mean?

 

Reagrds

 

GG

Regards
GG

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Highlighted

Re: Pull Control for a station

Pioneer
Pioneer

I always get the following error after I reset the simulation.

I assume that there are still a few entries in the list. Does anyone know how to fix it?

Thank you.

 

Best regards,

David

 


fehler_pull_steuerung.PNG

Re: Pull Control for a station

Siemens Phenom Siemens Phenom
Siemens Phenom

Hello David,

the pull control shouldn't be called when you reset the simulation.

When I run the model above and reset it, I never get the error you posted.

The error is shown because the blocklist is empty. But in this case the pull control should anyway not being called by the system.

Regards,

Ralf
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