Invalid Task in Process Flow

Question

question

Mia L asked Jul 30, '20 tannerp answered Jul 30, '20

Invalid Task in Process Flow

I am encountering an error in my process flow, where my model is stuck when running at the 'Wait for Event' block at the combiner. I am trying to mix my process flow and fixed resource logic so that the spheres are created in the queue, 40 are packed into a tote, and then the operator places each in the end setup queue until 5-6 totes are in the queue. How can my process flow be fixed?

Prototype.fsm

Software Version:

FlexSim 19.2.4

processflow combiner flexsim 19.2.4 packing invalidtask

prototype.fsm (51.6 KiB)

Answer 1 · 2020-07-30T18:23:55Z

tannerp answered Jul 30, '20

@mia.l,

There's a couple things that need to happen here:

1) The Wait for Event needs to assign a "Tote" label so that the Load and Unload activities can properly reference the tote.

2) The "Tote Queue" can't batch the 40 items if the combiner is going to do that, so I would deselect the "Perform Batching" option on the Tote Queue.

3) The Event-Triggered Source should never have connections going into it, only out of it. I think you meant to use a Wait for Event here...

4) You need to create more than one tote if you're going to wait for the "End Setup Queue" to have 5 full totes in it.

5) Just an additional thing to watch out for is that you don't always have to check the "Pull" box on all 3D objects, especially if you're handling all the logic with Process Flow.

Hope this updated model works a little better.

prototype_2.fsm

bad-source-connection.png (4.6 KiB)

create-5-items.png (17.3 KiB)

perform-batching.png (10.4 KiB)

assign-tote-label.png (10.6 KiB)

input-pull.png (4.0 KiB)

prototype-2.fsm (50.8 KiB)