how do I do for the operator don't leave the task?

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Rafael de Assis asked Apr 26 2023 at 9:24 PM Rafael de Assis commented May 17 2023 at 1:01 AM

how do I do for the operator don't leave the task?

Hello Everybody

I have a process in Flexsin where the operator "Pintor":

1) he has to lift a flowitem from the queue (buffer de entrada) to processor (Pintura) with the crane

2) he has to process the fowitem in processor (Pintura)

3) he has to lift a flowitem from queue (Saída do posto) to another queue (Buffer de saída), with the crane.

I done the operator "Pintor" complete the task number 1 and number 2. but whent I introduced the task number 3, a conflit happend. the operator doens't know decide when he is call for more than one task. someonde could helpe-me?

OBS: The priority task is number 2. I dont want that the operator leave some task in the middle for start another.

there are another operator (Ajudante) he is responsible for move flowitens light and to do the setup in processor (Pintura)

Modelo avançado V11.fsm

Thank you

Software Version:

FlexSim 21.1.5

task priority synchronism

modelo-avancado-v11.fsm (86.5 KiB)

· 1

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Answer 1 · 2023-04-27T14:05:08Z

Jason Lightfoot answered Apr 27 2023 at 2:05 PM Rafael de Assis commented May 17 2023 at 1:01 AM

Instead of giving the operator individual tasks create a task sequence and add those tasks to it. Unless they are preempted by another task sequence (something you control), they will that stick to the given sequence until you finish it.

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Rafael de Assis commented · Apr 28 2023 at 1:09 AM

I Think, this options it isn't possible, because the process has a diferents times for each flowitem mainly in the second processor "Secagem", so sometimes the operator "pintor" go to processor "pintura" , one, two or three times in sequence.

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Felix Möhlmann Rafael de Assis commented · Apr 28 2023 at 6:56 AM

Each transport or process would still be individual task sequences. Essentially the Create Task Sequence activity would take the place of acquiring the operator; preventing them from working on two sequences at a time. Through preemption you could interrupt one sequence though to first complete a different one of a higher priority.

The root issue I see in your model is that you are mixing 3d port logic and Process Flow without making sure that they don't interfere with each other. Moving items to the Pintura processor through Process Flow ignores the maximum content, so another grey item can enter first, blocking the crane from unloading because the Process Flow stops the processor until the Pintor arrives. Leading to a deadlock in the model.

While it would be possible to work around this with your current setup (see attached model 1), it becomes quite complex quickly with many things to worry about.

Instead I would suggest to use port connections for the items transported by crane as well and use the option to define the task sequence in a sub flow in the Use Transport field. This takes the maximum content of the processor into account and the transport itself still works as before. (see model 2)

modelo-avancado-v11_fm1.fsm

modelo-avancado-v11_fm2.fsm

1 ·

modelo-avancado-v11-fm1.fsm (94.4 KiB)

modelo-avancado-v11-fm2.fsm (81.4 KiB)

Rafael de Assis commented · May 16 2023 at 10:42 PM

Hello!

amazing Mr. Felix.

thank you!

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