make transporters cycle a specific path

Hello,

my question about flexsim might be easy, but i just started working with it so i am just a beginner: i have a few transporters and 4 queue's, and i want the transporters to first bring a package from queue 1 to queue 2 and then bring a package from queue 3 to queue 4, so always in a cycle. if there is no package available at a queue (queue 1 or 3) the transporter has to wait untill a package is available. how do i do something like this? thx very much for all the help!

anyone who has an idea or thinks this is impossible in flexsim? I really need it for my thesis so it is pretty important, thanks very much!

It should be easy for Flexsim to do something like that. I'm just not clear on exactly what you want to accomplish. Can you send the model you have? Maybe then it would make more sense what you are trying to accomplish.

Hi bsantens,

I've added a little model, which should do what I think you want it to do. To be able to achieve your functionality I've used a label on Queue1, a label on Queue3, a label on each flowitem and a controller which decides if you're allowed to dispach a job. The job is dispatched manually and contains the Queue1->Queue2,Queue3->Queue4 functionality.

The label on the flowitems are necessary to keep track on which flowitems are already dispatched. The labels on Queue1 and Queue3 are not really necessary, but keeps it more clear I think.

So check the OnMessage of the Controller and see if you understand what is happening. I've added a model with and without a network.

Hope it's what you want!

Martijn

All,

An easy way to do this would be to use the ports to cotrol the flow and let the queues dispatch normally. If you close the outpt to Queue3 until a flowitem exits Queue1 and then close the output of Queue1 until a flowitem exits Queue3 you would be able to get the model to do what you want. However, this only works is you have one dispatcher.

If you had multiple dispatchers and you wanted them to run in some kind of cycle so as they went to Queue1 and waited for a flowitem and then after moving that flowitem they went to Queue3 and waited for a flowitem. You could use subtasks to check for a flowitem and pick it up if its there and move on if its not but if you needed the transports to wait then you would probably want to do something more a long the lines of what Martijn has posted.

Good Luck,
Brandon