question

Steven Chen asked Dec 24, '20 Matthew Gillespie commented Jan 12, '21

Item stuck on merge controller

Hello,

In the attached model, you can see the 5th item released and stuck. How can I fix it?

mergecontrollerstuck_v20.2.fsm

Software Version:

FlexSim 20.2.3

flexsim 20.2.3 merge controller

02.png (124.9 KiB)

mergecontrollerstuck-v202.fsm (40.5 KiB)

Matthew Gillespie answered Jan 12, '21 Matthew Gillespie commented Jan 12, '21

When you're merging slug lanes like this you need to make sure that conveyor transfers are inline transfers and not side transfers.

See Problem with Merge for more discussion.

· 2

Jason Lightfoot ♦ commented · Jan 12, 2021 at 05:02 PM

Thanks Matthew.

So that means something like this if the conveyors need to be at right angles:

Model attached.

mergecontrollerstuck-v202_jl.fsm

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1610470933988.png (3.4 KiB)

mergecontrollerstuck-v202-jl.fsm (40.5 KiB)

Matthew Gillespie ♦♦ Jason Lightfoot ♦ commented · Jan 12, 2021 at 05:07 PM

Yes, or you can put curved conveyors in between each intersection.

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Cliff King answered Dec 29, '20 Steven Chen commented Jan 12, '21

Interesting problem! I played around with your model for awhile trying to fix the problem with the second "slug" release from the first conveyor getting stuck, but couldn't fix it. I assumed the problem had to do with the things that @anthony.johnson talked about in this post (https://answers.flexsim.com/questions/75670/view.html?overrideforward=1), so I played around with speeds and gaps, but had no success. I also played around with different arrival rates of items onto the conveyor and with different slug lengths (other than 1). I even moved the location of the conveyors and downstream decision point, but nothing seemed to work. I'm wondering if this is a bug, so I'll tag @Matthew Gillespie as well.

· 1

Steven Chen commented · Jan 12, 2021 at 12:59 AM

Hello, has this been confirmed as a bug?

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