How to remove all items in the queue if downstream processor is breakdown

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Vivian F asked Oct 13, '17 Vivian F commented Oct 17, '17

How to remove all items in the queue if downstream processor is breakdown

I need to build a model that items in the queue should be sent to ports based on downstream processor's status. If processor is in running status, then items in the queue will be waiting to be processed. If processor is Breakdown, then all items that are currently in the queue should be removed to a sink node.

I think I should use conditional port for the out flow of the queue, but it doesn't work as I expected.

I am new to the software, can anyone please help? Thanks.

Software Version:

FlexSim 17.2.1

queue breakdown

breakdown.fsm (20.5 KiB)

Answer 1 · 2017-10-13T18:11:29Z

Joerg Vogel answered Oct 13, '17 Vivian F commented Oct 17, '17

Place a queue behind your current you as a bypass. Then you close the input of this bypass queue. If the breakdown occurs you simply opens the input of the bypass and the items will take this route by default if you haven't explicitly set output ports in your queue.

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Vivian F commented · Oct 13, 2017 at 06:47 PM

Thanks, Jörg! Is it possible to use only one queue for to realize it?

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Mischa Spelt Vivian F commented · Oct 16, 2017 at 10:01 AM

Hi Vivian. Instead of using a bypass queue, you can also connect a sink to your existing queue. In order to clarify Jörg's answer, I have attached breakdownsink.fsm in which the BreakdownSink closes its own input in its On Reset trigger. There is an MTBF/MTTR event that affects the processor, in which I have implemented an On Break Down and On Repair trigger to respectively open and close the inputs of the breakdown sink.

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breakdownsink.fsm (78.7 KiB)

Vivian F Mischa Spelt commented · Oct 17, 2017 at 01:20 PM

Hi Mischa, This is exactly what I want to do, thank you very much!

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