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Nicholas M avatar image
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Nicholas M asked Nicholas M commented

Operator loading from list using tokens batched from arrival schedule

Very new to FlexSim. Long story short is that I'm trying to model a simple production line using a schedule imported from Excel. Essentially, I import the schedule along with the necessary labels, then batch it all by the arrival time so FlexSim doesn't create tens of thousands of tokens (the Planned Quantity is meant to be read as lengths rather than individual boxes). The batched tokens are then sent to a local list to wait for retrieval by the Operator. Once the first arrival time occurs, the Operator is meant to travel to the Queue, Load the product, and travel to / unload at its respective machine.

My issue is that once the Operator arrives at the Queue and the first arrival time occurs, I receive an error message saying the Load task is invalid. I've profiled the task sequence and scoured these forums but am still wracking my brain to find what I'm doing wrong.

error-message.png3d-model.png

Due to this error, I haven't been able to actually test or finish anything after Load, thus I do not know if what I've done for Travel to Dropoff or Unload even works. Any help would be greatly appreciated!

FilteredAttempt.fsm

FlexSim 21.2.0
pull from listexcel importflexsim 21.2.0batchingoperator loading and unloading
error-message.png (39.2 KiB)
3d-model.png (81.3 KiB)
filteredattempt.fsm (54.3 KiB)
5 |100000

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Ryan Clark avatar image
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Ryan Clark answered Nicholas M commented

Hello @Nicholas M4,

I believe the main problem that was leading to an error with the load task is that you were referring to the token that was pulled from the list instead of any sort of item. An operator is unable to interact with tokens, but can interact with flow items. To fix this, I added a Create Object activity to create a box associated with each batch of tokens, then changed the references to point to that box. I believe it should be working the way you want it now.

I'll attach my modified version of your model here. I would recommend looking through the properties of the various activities to see what changes I made to make it work the way you wanted.

I hope this helps!

filteredattempt-rc.fsm


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Nicholas M avatar image Nicholas M commented ·
Seems to be working perfect now... Thanks! I totally spaced on the fact that operators couldn't handle tokens.
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