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andrzej97 avatar image
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andrzej97 asked Jeanette F commented

Cycle time calculate error

Hello, I have the problem with calculate cycle time in FlexSim. I created object in first station "Stacja nawazania microadditives. I would like to have time between this station and FG Rack. I am using Histogram Dashboard. The cycle time should be about 10500 s. And the histogram is empty or I have wrong result shown in the picture below. What I can change to have a result? flexsim2.pngflexsim1.png

FlexSim 25.0.2
histogramdasboardlifecycle
flexsim1.png (594.5 KiB)
flexsim2.png (594.5 KiB)
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Jeanette F avatar image Jeanette F ♦♦ commented ·

Hi @andrzej97, was Felix Möhlmann's answer helpful? If so, please click the "Accept" button at the bottom of their answer. Or if you still have questions, add a comment and we'll continue the conversation.

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Felix Möhlmann answered andrzej97 commented

Hard to troubleshoot without access to the model. But you say the items enter the system through the processor. In the chart settings you have selected the "Main" queue as the entrance object though.

Did the item(s) actually enter that queue at any point?

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andrzej97 avatar image andrzej97 commented ·

Flexim_histogram.fsm

Hi, I am sneding my model

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flexim-histogram.fsm (92.3 KiB)
Felix Möhlmann avatar image Felix Möhlmann andrzej97 commented ·
The items getting created at the processor and entering the queue are never entering the "FG Rack". They get deleted and other items eventually enter the rack. You could in theory match the first, second, third... entry into the processor/queue with the first, second, third... entry into FG Rack.

But it would be easier to just track the time it takes a token to move between the relevant activities in the Process Flow.

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andrzej97 avatar image andrzej97 Felix Möhlmann commented ·

How to track a token? What function should I use for this purpose?

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andrzej97 avatar image andrzej97 commented ·

How to track a token? What function should I use for this purpose?

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Felix Möhlmann avatar image Felix Möhlmann andrzej97 commented ·
The same chart. Just select Process Flow activities as the entrance and exit object(s).
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andrzej97 avatar image andrzej97 commented ·

It doesn't work

Flexim_histogram_2.fsm

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flexim-histogram-2.fsm (91.2 KiB)
Felix Möhlmann avatar image Felix Möhlmann andrzej97 commented ·

Same issue as before. The tokens that enter the Unload activity are child-tokens of the one that entered the selected Travel activity.

To get this one-to-many relationship to work, you can write the initial time to a token on the label and use a custom Statistics Collector to store the difference between that and the unload time of each child token.

flexim-histogram-3.fsm

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flexim-histogram-3.fsm (694.8 KiB)