Hi ED forum
I am trying to similate a production line with 3 serves that are producing several different productions.
The whole production line has to be empty before changing over to produce another product, but how can I make ED do this?
I know the size of each product "batch", so I was thinking maybe it is possible to the server when a certain amount of products are already delivered to the shink, or?
Do you know any helpfull methods?
Empty productionline before changeovers
Re: Empty productionline before changeovers
Hi,
You can do that using the command closeoutput and openoutput (or closeinput and openinput) and calculate when a queue may release the next products.
See attached for a small example. There is code in the exittrigger of queue2 and entrytrigger of sink6.
Regards, Marlies
You can do that using the command closeoutput and openoutput (or closeinput and openinput) and calculate when a queue may release the next products.
See attached for a small example. There is code in the exittrigger of queue2 and entrytrigger of sink6.
Regards, Marlies
- Attachments
-
- 20130416_FlowControl.mod
- (20.76 KiB) Downloaded 316 times
Re: Empty productionline before changeovers
Great! it works perfectly 
Much better than the messy solution I comed up yesterday evening (one with spiltter, condition control and losts of buffers, which didn't look good at all)...
Unfortunately I don't fully understand how the codes works in your solution, but I think I will figure that out after sometime.
I just have one question. Is it possible to put a 10min delay between the batches? (for cleaning and preparation of the line)
Ps. Thanks for the help!
Regards,
Simon
Much better than the messy solution I comed up yesterday evening (one with spiltter, condition control and losts of buffers, which didn't look good at all)...
Unfortunately I don't fully understand how the codes works in your solution, but I think I will figure that out after sometime.
I just have one question. Is it possible to put a 10min delay between the batches? (for cleaning and preparation of the line)
Ps. Thanks for the help!
Regards,
Simon
Re: Empty productionline before changeovers
Hi Simon,
Good! In case you keep problems with understanding the code, just ask.
The time between batches could be easy: use the setting setuptime on the first server in line. The easiest would be to have a label on your products something like [BatchID]. One of the standard options for the setuptime is: check if the current and previous label are different, in that case use a setuptime of x (so, when the labels are the same, the setuptime will be 0).
Regards, Marlies
Good! In case you keep problems with understanding the code, just ask.
The time between batches could be easy: use the setting setuptime on the first server in line. The easiest would be to have a label on your products something like [BatchID]. One of the standard options for the setuptime is: check if the current and previous label are different, in that case use a setuptime of x (so, when the labels are the same, the setuptime will be 0).
Regards, Marlies
Re: Empty productionline before changeovers
Ohh yeah.. okay, It will solve it ...
My servers already have a setup time of 6 sec. so I couldn't use the existing servers.
I just made a dedicated server at the begining of the line with a setup time of 10min when going of one product to another and a cycle time of 0.
It working fine now.
Thanks for the help!
Regards,
Simon
... My servers already have a setup time of 6 sec. so I couldn't use the existing servers.
I just made a dedicated server at the begining of the line with a setup time of 10min when going of one product to another and a cycle time of 0.
It working fine now.
Thanks for the help!
Regards,
Simon