Machines are down when queues reach maximum flowitems allowed.

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Yifei Wang asked Jul 12, '16 Sam Stubbs commented Jul 12, '16

Machines are down when queues reach maximum flowitems allowed.

Hi,

I would like to set up the maxcontent of Connection_Queue and let Processors1, 2,3,4 and 5 go on downtime when Connection_Queue has reached its maximum flowitems allowed. Then. as Processor_1 continues to process items, items in Connection_Queue will be under maxcontent. At that moment, Processor 1,2,3,4 and 5 should be up again. Could you please let me know how I can achieve this? question1.fsm

Software Version:

FlexSim 16.1.0

down time

question1.fsm (17.5 KiB)

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Answer 1 · 2016-07-12T14:17:44Z

Sam Stubbs answered Jul 12, '16 Sam Stubbs commented Jul 12, '16

The max content for a queue is set in the property window of the Queue, under the first tab (the "Queue" tab) There is a field where you can set the max content there. By default the processors won't push items into the queue while it is full with max content, until the items flow. So it should work as you are wanting it to by default, unless I'm misreading your question.

· 2

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Sam Stubbs ♦ commented · Jul 12, 2016 at 02:26 PM

Of course there are ways you could have the processors stop for a period of time based on the items within the queue. So on the OnEntry Trigger of the Connection_Queue write out a code something like this:

if (content(node("Connection_Queue", model())) >= 1000) {
stopobject(node("Processor1", model()));
stopobject(node("Processor2", model()));
stopobject(node("Processor3", model()));
stopobject(node("Processor4", model()));
stopobject(node("Processor5", model()));
}

Where 1000 represents the number you'd like to set as it's max content. Then on the OnExit Trigger write a similar code to have processors resume:

if (content(node("Connection_Queue", model())) <= 800) {
resumeobject(node("Processor1", model()));
resumeobject(node("Processor2", model()));
resumeobject(node("Processor3", model()));
resumeobject(node("Processor4", model()));
resumeobject(node("Processor5", model()));
}

Where the 800 represents the amount of items the Queue should get to before the processors resume their processing.

1 ·

jing.c commented · Jul 12, 2016 at 02:26 PM

Haha, After reading your answer, perhaps I'm making too much of this question.

0 ·

Answer 2 · 2016-07-12T14:22:57Z

jing.c answered Jul 12, '16

Hi Yifei

You can use a "for" loop to stopobject() all the inobjects of Connection_Queue when it get the maximum, and resumeobject() them after any item leave this queue(which make "Connection_Queue will be under maxcontent")

I attach a model in which I set the maxcontent of Connection_Queue to 10.

Hope it helps

question1bychj.fsm

question1bychj.fsm (16.6 KiB)

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Attachments: Up to 12 attachments (including images) can be used with a maximum of 23.8 MiB each and 47.7 MiB total.

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