event time is in past

Question

question

Yt6155mail asked Apr 22 2022 at 12:35 AM Logan Gold commented Apr 28 2022 at 9:28 PM

"createvent: event time is in past: event time changed to present. Object: Source1 advancetime: -11.368785, time: 14109.910037 "

I'm getting an error like this.

There seems to be no way to resolve this error in the "Inter-Arrival time" setting.

How can I set it to avoid this error?

The same question was confirmed, but I couldn't find a specific solution.

Software Version:

FlexSim 21.0.10

interarrival times event

1650587485991.png (81.5 KiB)

event-time-is-in-past-1.fsm (32.4 KiB)

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Answer 1 · 2022-04-22T05:14:35Z

Joerg Vogel answered Apr 22 2022 at 5:14 AM Jason Lightfoot commented Apr 25 2022 at 3:01 PM

Math.max(0.01, normal(90,36.6,getstream(current))

a normal distribution can return negative values. Then tey are in the past.

You can prevent it with a mathematical function returning a value near zero if the result gets negative.

· 3

Joerg Vogel commented · Apr 23 2022 at 6:50 AM

if you choose deviation parameter value, which is larger than 3 sigma interval in comparison to your mean value, you get negative values.

normal(90,15) chance to get only positive values is ok.

normal(90,60) chance to get some negative values is an reasonable assumption.

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Yt6155mail Joerg Vogel commented · Apr 25 2022 at 7:29 AM

＞Math.max(0.01, normal(90,36.6,getstream(current))

My sample model seems to automatically convert negative values to zero without using this code.

However, the error continues to occur.

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Jason Lightfoot ♦♦ Yt6155mail commented · Apr 25 2022 at 3:01 PM

                      
                       Math.max(0.01, normal(90,36.6,getstream(current)))

You were missing a close parenthesis character. There are no errors when using this expression.

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