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Error in Flowcontrol for Job Shop

Creator
Creator

Hi, 

 

can someone take a look at this model, I just cant find the reason why the MU always runs through the very first machine two times...(After being done at the first machine it will go back to the buffer of this first machine)

 

Everything else is just the way it is supposed to ...

 

The model is set to produce only one MU so you can follow its way through the system better.

 

Thanks alot in advance!

 

 

4 REPLIES 4

Re: Error in Flowcontrol for Job Shop

Gears Esteemed Contributor Gears Esteemed Contributor
Gears Esteemed Contributor

try methogofLoop as entrance control of the stations. It seems, that the FlowControl is a little bit faster than the exitControl rear.

Steffen Bangsow
freelance simulation specialist  
web: www.bangsow.eu
mail: steffen@bangsow.net

Re: Error in Flowcontrol for Job Shop

Creator
Creator

Thank you very much Steffen! I am also reading your book , great stuff! Thanks for sharing your knowledge. 

 

But isnt this a bug in Plant Simulation?

Re: Error in Flowcontrol for Job Shop

Gears Esteemed Contributor Gears Esteemed Contributor
Gears Esteemed Contributor

Hello Dustsim,

 

thank you for reading my book. Next year I will publish a new edition(more than 650 pages).

 

I don't think, that it is a bug. Check the values of @.op in the FlowControl-method.

The exit-control rear and the method of the FlowControl are called at the same event (MU leaves the predecessor). Sometimes this causes a litte "confusíon" in the order of the method-calls. If you use the entrance-control to increase the op, you have the clear order of the method calls (first op++, than decision about the successor).

 

Best regards

 

Steffen Bangsow

 

 

Steffen Bangsow
freelance simulation specialist  
web: www.bangsow.eu
mail: steffen@bangsow.net

Re: Error in Flowcontrol for Job Shop

Creator
Creator
Thank you very much!