topic Re: Error in loading task in FlexSim Forum

Error in loading task

idoia_a — Wed, 20 Feb 2019 08:44:52 GMT

Hello,

I have a simple task sequence in which I want a transporter to load items in a queue, then travel to another queue, delay, and then unload in another plane. I have used process flow, the items created in the source are pushed to a list. For the task sequence items are pulled from the list and a resource is used for the transporter. It seems like I am referencing the item wrong as I cannot get the load task to work but I have not been able to find the right way to reference it(I have tried token.pulled/token.pulled.item). I attach model in the message.ts-loading-unloading.fsm

Thank you in advance,

Idoia

Re: Error in loading task

christian_norregaard — Wed, 20 Feb 2019 09:17:28 GMT

Hi Idoia

I had a look at your model. I think you are correct - the problem is in the item referencing.

You create the token when the item is created, but as you do so, you need to assign an item reference to the created token. This is done as shown below:

Then you should push a reference to the item to the list in stead of the token itself:

When that is done, the model works. I am not sure it is the upgrade from FlexSim 17 to FlexSim 19, but your fork lifter seems to be moving very fast, and that may cause some trouble.

I hope this helps.

Best regards
Christian
FlexSim Nordic

Re: Error in loading task

idoia_a — Wed, 20 Feb 2019 10:45:34 GMT

Thank you for the quick answer, it worked.