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?
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
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