topic Re: Stop running model once throughput threshold reaches in FlexSim Forum

Stop running model once throughput threshold reaches

mia_l — Fri, 24 Jul 2020 13:42:37 GMT

[ FlexSim 19.2.4 ]

Hello, I am trying to add decide logic into my process flow to stop running the model when the throughput sink hits a certain amount (not when the queue is depleted), however I am running into an error. Is it possible to do this? If so, which Decide 'Send Token To' option should I be choosing instead?

Process Flow Circle.fsm

Re: Stop running model once throughput threshold reaches

joerg_vogel_HsH — Fri, 24 Jul 2020 14:03:34 GMT

You select from the Picklist the Option template Conditional Decide and set a condition you sample partly by the sample tool.

Re: Stop running model once throughput threshold reaches

mia_l — Fri, 24 Jul 2020 14:09:21 GMT

Thank you very much!

Re: Stop running model once throughput threshold reaches

mia_l — Fri, 24 Jul 2020 14:19:36 GMT

@joerg.vogel My model seems to be going over the limit I set with your help in the process flow. Is there a way to fix this?

Re: Stop running model once throughput threshold reaches

tanner_p — Fri, 24 Jul 2020 14:52:39 GMT

You probably still need to add in the code to stop the model. I suggest you listen for the event where the sink's input value changes to 40 rather than rely on the Decide activity. Sometimes the token won't be in the Decide activity right when the value changes to 40, and it sounds like you don't want any delay. Here's an idea that uses an Event-Triggered Source and a Custom Code.

process-flow-circle_1.fsm

Re: Stop running model once throughput threshold reaches

joerg_vogel_HsH — Fri, 24 Jul 2020 15:01:43 GMT

You have probably already identified an answer how to set the correct value to get exact 40 items into the sink. You have to set the value in the condition in the decide activity to 39. You transport the items, then there is a difference until it gets into the sink.

Re: Stop running model once throughput threshold reaches

mia_l — Fri, 24 Jul 2020 15:07:13 GMT

This helps a lot. Thank you!