How to make an operator and a ground-level crane transport the same object simultaneously?

[v_cortesGRRPP]

Hi everyone,

I’m trying to model a scenario where both an operator and a ground-level crane need to transport the same object at the same time within a process. The idea is that both resources must be available simultaneously and remain “linked” to the same item during the transport operation.

I’ve tried implementing this using ProcessFlow, assigning both resources to the same token, but something doesn’t seem to work as expected. I’ve attached a small test file in case anyone can take a look or point me in the right direction.

Any guidance would be greatly appreciated.

Thanks in advance!

[FelixMoehlmann · Accepted solution]

You have to pay attention to the connection ranks when using the Synchronize activity. The token that enters through the input connection of rank N will also leave through the output connector of rank N. This current leads to the two tokens switching sides after the second Synchronize which in turn causes the error since the expected labels are not present on the tokens in the activities thereafter.

The crane object only does offset travel. As such it won't do anything when it receives a travel task. You have to use "Load", "Unload", "Travel To Location" or the "Custom Task" activity with "Pick Offset"/"Place Offset" as the task type to get it to move to somewhere.

Check out the task type reference to know what is expected for the various parameters in the Custom Task activity.

https://docs.flexsim.com/en/24.0/Reference/TaskSequences/QuickReference/QuickReference.html