Item is not being send by conveyor. Problem with Decision Points.

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Sara C asked Apr 13, '17 Logan Gold answered Apr 21, '17

Item is not being send by conveyor. Problem with Decision Points.

Hello everyone!! I have a problem with my model.

I´m trying to build a step by step conveyor. The items have to stop in every decision point. There are three stations, where there is a process time. All of the items have to stop at station 1, but if station 2 is busy with an item, they can go to station 3 following the blue line. (Attached image)

To move the items along the conveyor, I am using decision points, with On Continue and On Arrival triggers, where I Release and Acquire Restricted Area. This allows me to build the step by step conveyor.

The problem is in the green circle, where the items that come from the Station 1 are not being released, and they are blocked.

Thank you!!

I attach the model.

Software Version:

FlexSim 17.0.2

conveyors conveyor system conveyor decision point conveyor transfer conveyor module

support.png (84.0 KiB)

support.fsm (1.4 MiB)

· 1

Sam Stubbs ♦ commented · Apr 14, 2017 at 02:33 PM

Instead of using a series of start/stop points along your conveyor, could you just use a "non-accumulating" conveyor instead? I think that would minimize the conflict and confusion in acquiring and releasing so many areas. (It will also speed up the computation time if you're making a larger model.)

0 ·

Answer 1 · 2017-04-21T23:25:41Z

Logan Gold answered Apr 21, '17

The issue has to do with the Entry Space set on ConveyorType1 in your model. If you change the offset distance from 2400 mm to 1000 mm, then your model will work consistently.

This appears to be a bug, so I'll do some more testing and pass it on the developers to diagnose the issue.

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