setup matrix usage
Zerotel Corp
I have a machine which can do several operations. Setup time depends on the
previous operation on that machine. Some products go through this machine
several times at different stages of the production process (different
operations are being done).
Is this possible in frepple?
I have entered a setup matrix for the resource, assigned it to the resource, but
it is unclear what the setup matrix fields "From setup" and "To setup" mean. I
guess it's an operation, but I cannot choose the value from the list. I'm
confused.
johan de taeye
>>I have entered a setup matrix for the resource, assigned it to the
resource,
>>but it is unclear what the setup matrix fields "From setup" and "To setup"
>>mean. I guess it's an operation, but I cannot choose the value from the
list.
Check out the "setup_x" examples in test folder.
The modeling is in the "load" model (since an operation can load multiple
resources - each with a different setup).
The setup you specify there is just a name. There can be many operations
with the same setup: Eg Operation "paint product X", "paint product Y" and
"paint product Z" could all have setup "black".
In the matrix you can specify the changeover time between setups: eg "black"
-> "white", "black" -> "green", ...
Wildcard characters are supported to specify the matrix.
>>I have a machine which can do several operations. Setup time depends
>>on the previous operation on that machine. Some products go through this
>>machine several times at different stages of the production process
>>(different operations are being done).
>>Is this possible in frepple?
The modeling of setups is fully implemented and ready.
The solver support is however only in experimental state: you'll see the
correct changeover times being used in your plan, but the solver doesn't
have advanced logic yet to minimize the number of changeovers. You might
see excessive changeovers.
The solver does recognize the changeover cost when selecting alternates. The
search modes MINCOST, MINPENALTY and MINCOSTPENALTY allow you to select the
alternate with the lowest changeover cost.
Regards,
Johan
Zerotel Corp
How can I load those "setup_x" into the frepple to see it in action? I tried
"manage loaddata setup_1". It didn't work.
johan de taeye
Those XML files are in the format of the core engine. You can execute them
with "frepple setup_x.xml".
They can't be loaded in the database.