place in bay-level= first avariable, min(time to reach)

Hi everyone, i'm doing some experiment with flexsim and actually i'm trying to recreate a model that compare 2 different kind of warehouse organization:
-random storing in a rax
-class based storage, 2 class.

I have different interarrival time for the 2 object (bianco and viola) and different pull from rax time (in a global table (tempi di permanenza)).

Now i'd like to tell to my as/rs 2 things:

1- place the box in the bay with the minimum time needed to reach it, so for example first fill the 1 bay, then the second....by time subject to the speed-acceleration constraints.
2-do NOT pick a second item if another one is on the as/rs. sometimes the ar/rs is loaded, then a unload request arrive. The as/rs has to unload the curret box, then go to pick to unload the other one.


Thanks everyone for suggestions!

Hi Riccardo,

1-You can set a global table which contains the traveltime to the cells. Then you can look up a bay and a level the as/rs should travel to.
If the cell is full, you set the traveltime very high. Then any other cells are chosen.
2-This will only happen if the capacity is greater than 1.
If you still want the capacity to be greater than 1, then you can change the priority of the tasksequences or the order of the tasksequences in its queue.

Jörg

hi Jorg, thank you so much for the answer.

I don't know if i got it, in the new attached file i created a global table (tempi di accesso celle) with the access time of every single cell but....i don't know how to link it with the rax, there is not a "by global lookup table" like for other objects!

Hello Ricardo,

you have the functions place in bay and place in level. Each function returns the value of the bay or level. You can write your own logic in these functions and give the return value the value you like. To access the global table please look in the commands of the user manual:
Flexsim main menu bar > Help > Users Manual > Command Reference > Category Index > Tables
If you don't want to write a new global table, you can store your rack data in a label with the commands: racksetcellvar(obj rack,num bay, num level, num varnum, num setvalue, node storagenode); rackgetcellvar(obj rack, num bay, num level, num varnum, node storagenode).

Jörg