how can i model this station ?

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Farah A asked Oct 30, '19 Farah A commented Nov 2, '19

how can i model this station ?

Hello,

For my graduation project , i want to create a digital twin of a distibution station controlled by PLC. I am really new with Flexsim and doing my best to get familiar with it.

in my model, there's an ejecting cylinder that eject pieces from a magazine containing workpieces, then, a swivel drive will pick the workpiece from the magazine and move it to a downstream station. I need it to work step by step (sequencely ) and not simultaneously. I am struggling with the process flow logic and can't find help in tutorials to model this.

My model has sensors and actuators controlling position and work order of swivel drive, ejecting cylinder,.... the problem is, decision points that should represent sensors works only with conveyor system. and there is no conveyors in my system , how can i do that.

also , the magazine should contains at most, 8 pieces, and it's controlled by a photoeye barrier if it's empty or filled.

Here's a picture of the distibution station

capture.png

and here's my basic model so far

dist.fsm

i hope i can get some help and support

Software Version:

FlexSim 19.2.0

process flow decision points logic plc emulation sensors

capture.png (126.6 KiB)

dist.fsm (78.0 KiB)

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Joerg Vogel commented · Oct 31, 2019 at 09:59 AM

I don’t think it is important, that there isn’t a conveyor in your real system. You can still use a conveyor in a simulation model as a ejection cylinder. You set the conveyor as visual hidden and put a shape over the object to look like your real system object. Then you have access to the photo eye sensors for a PLC connection.

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Farah A Joerg Vogel commented · Nov 02, 2019 at 08:57 PM

Thanks a loooot ! this is very helpful

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Answer 1 · 2019-10-30T21:06:13Z

Benjamin W2 answered Oct 30, '19 Farah A commented Nov 2, '19

Hi @Farah A,

Have you thought about using process flow? It will allow you to add a high degree of customization to your model. I've added several links below that should help you with your project. I think that the Zone activity could be very useful to this situation.

I hope this helps!

Process Flow Basics:

https://docs.flexsim.com/en/19.2/ModelLogic/ProcessFlowBasics/OverviewProcessFlowInterface/

Zone Activity:

https://docs.flexsim.com/en/19.2/Reference/ProcessFlowObjects/SharedAssets/Zone/

Process Flow Tutorials:

https://docs.flexsim.com/en/19.2/Tutorials/ProcessFlow/Tutorial1UsingSharedAssets/UsingSharedAssetsOverview/

https://docs.flexsim.com/en/19.2/Tutorials/ProcessFlow/Tutorial2TaskSequences/TaskSequencesOverview/

https://docs.flexsim.com/en/19.2/Tutorials/ProcessFlow/Tutorial3SubProcessFlows/SubProcessFlowsOverview/

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Farah A commented · Nov 02, 2019 at 08:58 PM

Thank you so much !! i'm checking all these tutorials, very usefull !

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