How can input port be open only when queue is empty ?

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Hubert asked Dec 14, '23 Hubert commented Dec 14, '23

How can input port be open only when queue is empty ?

Hello,

I can't seem to find a solution for opening the input port from the source to the first queue only when the queue is empty. I have set the trigger on the queue exit port to close the input port and that's how it should be, but I would still like to set the input port to open when all items are taken from the queue.

Please Help

Software Version:

FlexSim 24.0.0

triggers input port

zrzut-ekranu-2023-12-14-141159.png (81.1 KiB)

model-warehouse.fsm (85.5 KiB)

Answer 1 · 2023-12-14T13:47:27Z

Felix Möhlmann answered Dec 14, '23 Hubert commented Dec 14, '23

Getting the timing right for opening/closing ports can sometimes be a bit finicky. If you use the Entry/Exit trigger, a 0s delay (by sending a message and only closing/opening the port in the message trigger) can often help.

model-warehouse-fm.fsm

model-warehouse-fm.fsm (82.5 KiB)

· 1

Hubert commented · Dec 14, 2023 at 02:40 PM

thank you very much

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