Wait for downstream event

Question

question

Alexander Muff asked Oct 12, '16 Phil BoBo commented Oct 12, '16

Wait for downstream event

I am trying to use a "Wait for Event" to trigger an upstream process. (As soon as Zone 3 is empty, I can continue loading Zone 2). The problem is that the first token is waiting for the trigger: Exit of Zone 3. It will wait infinity because no token ever reaches Zone 3.

Is there a way to check the content of a Zone and use that as a trigger?

Software Version:

FlexSim 16.2.0

wait for event zone

Answer 1 · 2016-10-12T08:05:50Z

Kari Payton answered Oct 12, '16 Phil BoBo commented Oct 12, '16

Hi @Alexander Muff I'm not sure if this answers your question. You can set a tracked variable to track the content of the zone. See attached for example.

The tokens enter a zone and then the trackedvariable is increased by +1 each time a token passes. When a token leaves the trackedvariable is increased by -1. On the left side a decide point is used. If the content is > 20 then the token moves on tot he sink if not it will continue the loop to check the content. A negative of this model is the continuous checks. It can slow the model down some depending on how often you check. Hope this helps! trackedvariableexample.fsm

trackedvariableexample.fsm (20.1 KiB)

· 1

Alexander Muff commented · Oct 12, 2016 at 05:44 PM

This will work prefect for my model.

1 ·

question